Draft Reg Guide DC-1230

U.S. NUCLEAR REGULATORY COMMISSION
OFFICE OF NUCLEAR REGULATORY RESEARCH

June 2013
Division 1

DRAFT REGULATORY GUIDE
Contact: W. Norris
(301) 251-7650

DRAFT REGULATORY GUIDE DG-1230
(Proposed Revision 36 of Regulatory Guide 1.84, dated October 2010)

DESIGN, FABRICATION, AND MATERIALS CODE CASE
ACCEPTABILITY, ASME SECTION III
A. INTRODUCTION
General Design Criterion (GDC) 1, “Quality Standards and Records,” of Appendix A, “General
Design Criteria for Nuclear Power Plants,” to Title 10, Part 50, of the Code of Federal Regulations
(10 CFR Part 50), “Domestic Licensing of Production and Utilization Facilities” (Ref. 1), requires, in
part, that structures, systems, and components important to safety be designed, fabricated, erected, and
tested to quality standards commensurate with the importance of the safety function to be performed.
Where generally recognized codes and standards are used, Criterion 1 requires that they be identified and
evaluated to determine their applicability, adequacy, and sufficiency and be supplemented or modified as
necessary to ensure a quality product in keeping with the required safety function.
Criterion 30, “Quality of Reactor Coolant Pressure Boundary,” of Appendix A to 10 CFR Part 50
requires, in part, that components that are part of the reactor coolant pressure boundary be designed,
fabricated, erected, and tested to the highest practical quality standards.
Appendix B, “Quality Assurance Criteria for Nuclear Power Plants and Fuel Processing Plants,”
to 10 CFR Part 50 requires, in part, that measures be established for the control of special processing of
materials and that proper testing be performed.

This regulatory guide is being issued in draft form to involve the public in the early stages of the development of a regulatory
position in this area. It has not received final staff review or approval and does not represent an official NRC final staff position.
Public comments are being solicited on this draft guide (including any implementation schedule) and its associated regulatory
analysis or value/impact statement. Comments should be accompanied by appropriate supporting data. Written comments may
be submitted to the Rules, Announcements, and Directives Branch, Office of Administration, U.S. Nuclear Regulatory
Commission, Washington, DC 20555-0001; submitted through the NRC’s interactive rulemaking Web page at
http://www.nrc.gov; or faxed to (301) 492-3446. Copies of comments received may be examined at the NRC’s Public Document
Room, 11555 Rockville Pike, Rockville, MD. Comments will be most helpful if received by September 9, 2013.
Electronic copies of this draft regulatory guide are available through the NRC’s interactive rulemaking Web page (see above);
the NRC’s public Web site under Draft Regulatory Guides in the Regulatory Guides document collection of the NRC Library at
http://www.nrc.gov/reading-rm/doc-collections/; and the NRC’s Agencywide Documents Access and Management System
(ADAMS) at http://www.nrc.gov/reading-rm/adams.html, under Accession No. ML102590003.

Provisions of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel
(BPV) Code have been used since 1971 as one part of the framework to establish the necessary design,
fabrication, construction, testing, and performance requirements for structures, systems, and components
important to safety. Among other things, ASME standards committees develop improved methods for the
construction and inservice inspection (ISI) of ASME Class 1, 2, 3, MC (metal containment), and CC
(concrete containment) nuclear power plant components. A broad spectrum of stakeholders participate in
the ASME process, which helps to ensure that the various interests are considered.
The regulation in 10 CFR 50.55a(c), “Reactor Coolant Pressure Boundary,” requires, in part, that
components of the reactor coolant pressure boundary must be designed, fabricated, erected, and tested in
accordance with the requirements for Class 1 components of Section III, “Rules for Construction of
Nuclear Power Plant Components,” of the ASME BPV Code (Ref. 2) or equivalent quality standards.
The ASME publishes a new edition of the BPV Code, which includes Section III, every 3 years, and new
addenda every year. The latest editions and addenda of Section III that the U.S. Nuclear Regulatory
Commission (NRC) has approved for use are referenced in 10 CFR 50.55a(a)(1)(i). The ASME also
publishes Code Cases quarterly. Code Cases provide alternatives developed and approved by ASME.
This regulatory guide identifies the Code Cases that have been determined by the NRC to be acceptable
alternatives to applicable parts of Section III. Section III Code Cases not yet endorsed by the NRC may
be used by a licensee or applicant through 10 CFR 50.55a(z). That section permits the use of alternatives
to the Code requirements referenced in 10 CFR 50.55a provided that the proposed alternatives result in an
acceptable level of quality and safety, and that their use is authorized by the Director of the Office of
Nuclear Reactor Regulation.
The ASME Code is incorporated by reference into 10 CFR 50.55a. Code Cases approved by the
NRC provide an acceptable voluntary alternative to the mandatory ASME Code provisions. Therefore,
the NRC will amend 10 CFR 50.55a to incorporate by reference the new Code Cases and revisions to
existing Code Cases listed in this guide, and to state the requirements governing the use of Code Cases.
Because of continuing change in the status of Code Cases, the staff plans periodic updates to 10 CFR
50.55a and this guide to accommodate new Code Cases and any revisions of existing Code Cases.
Paperwork Reduction Act Statement
This regulatory guide does not contain new or amended information collection requirements
subject to the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.) (Ref. 3). Existing information
collection requirements were approved by the Office of Management and Budget, control number 31500011.
Public Protection Notification
The NRC may not conduct or sponsor, and a person is not required to respond to, a request for
information or an information collection requirement unless the requesting document displays a currently
valid OMB control number.
This regulatory guide is a rule as designated in the Congressional Review Act (5 U.S.C. 801-808)
(Ref. 14). However, the NRC has determined this regulatory guide is not a major rule as designated by
the
Congressional Review Act and has verified this determination with the OMB.
DG-1230, Page 2

B. DISCUSSION
Regulatory Guide 1.84 lists all Section III Code Cases that the NRC has approved for use. For
Revision 36 of the guide, the NRC reviewed the Section III Code Cases listed in Supplements 1 through
10 to the 2007 Edition.1 Appendix A to this guide lists the supplements reviewed, the applicable edition,
and the date on which each supplement was approved by the ASME Board on Nuclear Codes
and Standards. Appendix B is a list of the Section III Code Cases addressed in the seven supplements.
Finally, Appendix C is a current list of all Section III Code Cases. The Code Cases addressed by this
regulatory guide are listed in five tables:
(1)

Table 1, “Acceptable Section III Code Cases,” contains the Code Cases that are acceptable to the
NRC for application in the design and construction of light-water-cooled nuclear power plants.

(2)

Table 2, “Conditionally Acceptable Section III Code Cases,” contains Code Cases that are
acceptable provided that they are used with the identified conditions (i.e., the Code Case is
generally acceptable but the NRC has determined that requirements in the Code Case, which are
alternatives to the BPV Code, must be supplemented in order to provide an acceptable level of
quality and safety).

(3)

Table 3, “Annulled Unconditionally Approved Section III Code Cases,” contains the Code Cases
that have been annulled by the ASME.

(4)

Table 4, “Annulled Conditionally Acceptable Section III Code Cases,” contains the Code Cases
that the NRC determined to be acceptable, provided that they were used with the identified
conditions, but were subsequently annulled by the ASME.

(5)

Table 5, “Section III Code Cases That Have Been Superseded by Revised Code Cases on or After
July 1, 1974,” lists Code Cases that have been superseded through revision.

Code Cases that the NRC determined to be unacceptable are listed in Regulatory Guide 1.193,
“ASME Code Cases Not Approved for Use” (Ref. 4).
Code Cases provide alternatives to existing Code requirements that the ASME developed and
approved. The new Code Cases and revisions to existing Code Cases listed as approved in Tables 1 and 2
of this guide are incorporated by reference into 10 CFR 50.55a. Code Cases approved by the NRC may
be used voluntarily by licensees as an alternative to compliance with ASME Code provisions that have
been incorporated by reference into 10 CFR 50.55a.
Requirements related to Code Case implementation are provided in 10 CFR 50.55a(b). When a
licensee initially applies a Code Case listed in Tables 1 or 2, the licensee must implement the most recent
version of that Code Case incorporated by reference in 10 CFR 50.55a.

1

Except for Code Cases pertaining to high-temperature gas-cooled reactors; certain requirements in Section III,
Division 2, not endorsed by the NRC; Section III, Division 2, and liquid metal.

DG-1230, Page 3

Code Cases may be annulled because the provisions have been incorporated into the Code, the
application for which it was specifically developed no longer exists, or experience has shown that the
design analysis or construction method is no longer adequate. After the ASME annuls a Code Case and
the NRC amends 10 CFR 50.55a and this guide, licensees may not implement that Code Case for the first
time. However, a licensee who implemented the Code Case prior to annulment may continue to use that
Code Case until the licensee voluntarily updates its Section III Code of record. If a Code Case is
incorporated by reference into 10 CFR 50.55a and later annulled by the ASME because experience has
shown that the design analysis or construction method is no longer adequate, the NRC will amend 10
CFR 50.55a and this guide to remove the approval of the annulled Code Case. Licensees should not
begin to implement such annulled Code Cases in advance of the rulemaking. Notwithstanding these
requirements, the Commission may impose new or revised Code requirements, including implementation
schedules, that it determines are consistent with the Backfit Rule (10 CFR 50.109).
A Code Case may be revised, for example, to incorporate user experience. The older or
superseded version of the Code Case cannot be applied by the licensee or applicant for the first time. If
an applicant or a licensee applied a Code Case before it was listed as superseded, the applicant or the
licensee may continue to use the Code Case until the applicant or the licensee updates its construction
Code of Record (in the case of an applicant, updates its application) or until the licensee’s 120-month
ISI/IST update interval expires, after which the continued use of the Code Case is prohibited unless NRC
approval is granted under 10 CFR Part 50.55a(z). If a Code Case is incorporated by reference into 10
CFR Part 50.55a and later a revised version is issued by the ASME because experience has shown that the
design analysis, construction method, examination method, or testing method is inadequate; the NRC will
amend 10 CFR Part 50.55a and the relevant RG to remove the approval of the superseded Code Case.
Applicants and licensees should not begin to implement such superseded Code Cases in advance of the
rulemaking.
With regard to the use of any Code Case, it is the responsibility of the user to make certain that
the provisions of the Code Case do not conflict with licensee commitments or regulatory requirements.

DG-1230, Page 4

C. REGULATORY POSITION
1.

Acceptable Code Cases

The Code Cases listed in Table 1 below are acceptable to the NRC for application in the design
and construction of components and their supports for water-cooled nuclear power plants. Code Cases
are published quarterly in supplements to each edition. To assist users, new and revised Code Cases
are shaded to distinguish them from those approved in previous versions of this guide. The shading will
assist in focusing attention during the public comment period on the changes to the guide. For Code
Cases previously listed in this guide, the third column of Table 1 lists the date of ASME approval. For
new or revised Code Cases, the third column of Table 1 lists the supplement and edition in which each
Code Case was published (e.g., “3/07E” means Code Case Supplement 3 to the 2007 Edition).
Table 1. Acceptable Section III Code Cases
Code Case
Number

Table 1
Acceptable Section III Code Cases

Date or
Supplement/
Edition

N-4-13

Special Type 403 Modified Forgings or Bars, Section III, Division 1,
Class 1 and CS
(Note that N-4-12 was unconditionally approved in Revision 35 to Regulatory
Guide 1.84)

N-122-2

Procedure for Evaluation of the Design of Rectangular Cross Section
Attachments on Class 1 Piping, Section III, Division 1

2/03/03

N-131-1
(1759-1)

Material for Internal Pressure Retaining Items for Pressure Relief Valves,
Section III, Division 1, Class 1, 2, and 3

2/03/03

N-133-3

Use of SB-148 Alloys 952 and 954, Section III, Division 1, Class 3

2/03/03

N-154-1

Projection Resistance Welding of Valve Seats, Section III, Division 1,
Classes 1, 2, and 3

2/03/03

N-160-1

Finned Tubing for Construction, Section III, Division 1

2/03/03

N-171

Postweld Heat Treatment of P-No. 1 Material, Section III, Division 2

4/30/93

N-192-3

Use of Braided Flexible Connectors, Section III, Division 1, Class 2 and 3

7/23/02

N-205

Use of Ductile Iron SA-395, Section III, Division 1, Class 3

2/25/02

N-213

Welded Radial Shear Bar Assemblies, Section III, Division 2

2/25/02

N-243

Boundaries Within Castings Used for Core Support Structures, Section III,
Division 1, Class CS

2/03/03

N-284-2

Metal Containment Shell Buckling Design Methods, Class MC, Section III,
Division 1

1/10/07

N-315

Repair of Bellows, Section III, Division 1

2/03/03

N-318-5

Procedure for Evaluation of the Design of Rectangular Cross Section
Attachments on Class 2 or 3 Piping, Section III, Division 1

2/03/03

DG-1230, Page 5

5/07E

Code Case
Number

Table 1
Acceptable Section III Code Cases

Date or
Supplement/
Edition

N-319-3

Alternate Procedure for Evaluation of Stresses in Butt Welding Elbows in
Class 1 Piping, Section III, Division 1

2/03/03

N-329

Examination of Bar Material, Section III, Division 1, Class 1

7/23/02

N-351

Use of Subsize Charpy V-Notch Specimens, Section III, Division 1

1/17/00

N-369

Resistance Welding of Bellows, Section III, Division 1

5/09/03

N-373-3

Alternative PWHT Time at Temperature for P-No. 5A or P-No. 5B Group 1
Material, Classes 1, 2, and 3

10/08/04

N-391-2

Procedure for Evaluation of the Design of Hollow Circular Cross Section
Welded Attachments on Class 1 Piping, Section III, Division 1

5/04/04

N-392-3

Procedure for Evaluation of the Design of Hollow Circular Cross Section
Welded Attachments on Classes 2 and 3 Piping, Section III, Division 1

5/04/04

N-405-1

Socket Welds, Section III, Division 1

2/20/04

N-438-1

UNS N08367, Section III, Division 1, Class 2 and 3 Construction

5/24/96

N-452

Specialized Subcontracted Welding Process (Electron Beam Welding),
Section III, Division 1

5/09/03

N-453-3

Nickel-Chromium-Molybdenum-Copper Stainless Steel (UNS N08925) for
Class 2 and 3 Construction, Section III, Division 1

8/14/01

N-454-1

Nickel-Chromium-Molybdenum-Copper Stainless Steels (UNS N08925 and
N08926) Wrought Fittings for Class 2 and 3 Construction, Section III,
Division 1

6/17/03

N-455-1

Nickel-Chromium-Molybdenum-Copper Stainless Steels (UNS N08925 and
N08926) Forged Flanges and Fittings for Class 2 and 3, Section III,
Division
1

6/17/03

N-469-1

Martensitic Stainless Steel for Class 1, 2, and 3 Components, Section III,
Division 1

2/03/03

N-493

Alternative Radiographic Acceptance Criteria for Vessels Used as Shipping
Casks, Section III, Division 1, Class 1

7/23/02

N-500-2

Alternative Rules for Standard Supports for Classes 1, 2, 3 and MC,
Section III, Division 1

2/20/04

N-505

Alternative Rules for the Examination of Butt Welds Used as Closure Welds for
Electrical Penetration Assemblies in Containment Structures, Section III,
Division 1

5/04/04

N-511

Design Temperature for Atmospheric and 0-15 psi Storage Tanks, Section III,
Division 1

5/04/04

N-525

Design Stress Intensities and Yield Strength Values for UNS N06690 With a
Minimum Specified Yield Strength of 30 ksi, Class 1 Components, Section III,
Division 1

7/23/02

N-539

UNS N08367 in Class 2 and 3 Valves, Section III, Division 1

2/20/04

DG-1230, Page 6

Code Case
Number

Table 1
Acceptable Section III Code Cases

Date or
Supplement/
Edition

N-548

Air Cooling of SA-182 Grades F304, F304L, F316, F316L Forgings Instead of
Liquid Quenching After Solution Heat Treatment, Class 1, 2, and 3, Section III,
Division 1

9/07/01

N-558

Stamping of Class 2 Vessels Fabricated to Subsection NB, Section III,
Division 1

2/25/02

N-564-2

UNS J93380, Alloy CD3MWCuN, Class 2 and 3 Construction, Section III,
Division 1

2/03/03

N-570-2

Alternative Rules for Linear Piping and Linear Standard Supports for Classes 1,
2, 3, and MC, Section III, Division 1
(Note that N-570-1 was conditionally approved in Revision 35)

7/07E

N-579

Use of Nonstandard Nuts, Class 1, 2, and 3, MC, CS Components and Supports
Construction, Section III, Division 1

2/03/03

N-580-2

Use of Alloy 600 With Columbium Added, Section III, Division 1
(Note that N-580-1 was unconditionally approved in Revision 35 to Regulatory
Guide 1.84)

4/07E

N-594

Repairs to P-4 and P-5A Materials for Pumps and Valves Without Postweld
Heat Treatment, Section III, Division 1

3/28/01

N-607

Guidance on Implementation of NS Certificate of Accreditation, Section III,
Division 1

5/04/04

N-610

Alternative Reference Stress Intensity Factor (K1R) Curve for Class
Components, Section III, Division 1

5/04/04

N-611

Use of Stress Limits as an Alternate to Pressure Limits Subsection
NC/ND-3500, Section III, Division 1

2/20/04

N-620

Rules for Class 1 Type M Pumps, Section III, Division 1

5/04/04

N-621-1

Ni-Cr-Mo Alloy (UNS N06022) Welded Construction to 800°F, Section III,
Division 1

10/08/04

N-625-1

Ni-Cr-Mo Alloy (UNS N06059) Welded Construction to 800°F, Section III,
Division 1

2/20/04

N-631

Use of Fracture Toughness Test Data to Establish Reference Temperature for
Pressure Retaining Materials Other Than Bolting for Class 1 Vessels,
Section III, Division 1

7/23/02

N-632

Use of ASTM A 572, Grades 50 and 65 for Structural Attachments to Class CC
Containment Liners, Section III, Division 2

2/03/03

N-635-1

Use of 22Cr-5Ni-3Mo-N (Alloy UNS S31803) Forgings, Plate, Bar, Welded and
Seamless Pipe, and/or Tube, Fittings, and Fusion Welded Pipe With Addition of
Filler Metal, Classes 2 and 3, Section III, Division 1

2/14/03

N-636

Use of 18Cr-13Ni-3Mo (Alloy UNS S31703), 19Cr-15Ni-4Mo (Alloy UNS
S31725), and 18.5Cr-15.5Ni-4.5Mo-N (Alloy UNS S31726) Forgings, Seamless
Tubing, Plate, Welded Tubing, Welded and Seamless Pipe, Welded Pipe With
Addition of Filler Metal and Fittings, Classes 2 and 3, Section III, Division 1

7/23/02

DG-1230, Page 7

Code Case
Number

Table 1
Acceptable Section III Code Cases

Date or
Supplement/
Edition

N-637

Use of 44Fe-25Ni-21Cr-Mo (Alloy UNS N08904) Plate, Bar, Fittings, Welded
Pipe, and Welded Tube, Classes 2 and 3, Section III, Division 1

9/24/99

N-642

Alternative Rules for Progressive Liquid Penetrant Examination of Groove
Welds In P-No. 8 Materials 3/16 in. (5 mm) Thick and Less Made by
Autogenous Machine or Automatic Welding, Section III, Division 1

2/03/03

N-644-1

Weld Procedure Qualification for Procedures Exempt From PWHT
in Classes 1, 2, and 3 Construction, Section III, Division 1

3/28/01

N-646

Alternative Stress Intensification Factors for Circumferential Fillet Welded or
Socket Welded Joints for Class 2 or 3 Piping, Section III, Division 1

2/20/04

N-650

Use of SA-537, Class 2 Plate Material in Non-pressure Boundary Application
Service 700°F to 850°F, Class 1 or CS, Section III, Division 1

2/20/04

N-655-1

Use of SA-738, Grade B, for Metal Containment Vessels, Class MC, Section III,
Division 1
(Note that N-655 was conditionally approved in Revision 35 to Regulatory
Guide 1.84)

2/07E

N-657

Use of the N-1A Data Report for Spent Fuel Canisters, Section III, Division 1

2/25/02

N-692

Use of Standard Welding Procedures, Section III, Divisions 1 and 2

6/17/03

N-698

Design Stress Intensities and Yield Strength for UNS N06690 With a Minimum
Specified Yield Strength of 35 ksi (240 Mpa), Class 1 Components, Section III,
Division 1

11/18/03

N-699

Use of Titanium Grade 2 (UNS R50400) Tube and Bar, and Grade 1
(UNS R50250) Plate and Sheet for Class 1 Construction, Section III, Division 1

1/05/06

N-703

Use of Strain Hardened Austenitic Material at Lower Design Stress Values for
Class 1 Valves, Section III, Division 1

5/04/04

N-708

Use of JIS G-4303, Grades SUS304, SUS304L, SUS316, and SUS316L,
Section III, Division 1

N-710

Use of Zirconium Alloy UNS R60702, Bars, Forgings, Plate, Seamless and
Welded Fittings, Seamless and Welding Tubing, and Seamless and Welded Pipe,
for Class 3 Construction, Section III, Division 1

5/04/04

N-725

Design Stress Values for UNS N06690 With Minimum Specified Yield Strength
of 35 ksi (240 Mpa), Classes 2 and 3 Components, Section III, Division 1

1/12/05

N-727

Dissimilar Welding Using Continuous Drive Friction Welding for Reactor
Vessel CRDM/CEDM Nozzle to Flange/Adapter Welds, Classes 1, Section III,
Division 1

2/24/06

N-732

Magnetic Particles Examination of forgings for Construction, Section III,
Division 1

1/20/05

N-736

Use UNS S32050 Welded and Seamless Pipe and Tubing, Forgings, and Plates
Conforming to SA-249/SA-249M, SA-479/SA-479M, and SA-240/SA-240M, and
Grade CK35MN Castings Conforming to ASTM A 743-03 for Construction of
Class 1, 2, and 3 Components, Section III, Division 1

1/05/06

DG-1230, Page 8

2/07E

Code Case
Number

Table 1
Acceptable Section III Code Cases

Date or
Supplement/
Edition

N-738

NDE of Full Penetration Butt Welds in Class 2 Supports, Section III,
Division 1

7/01/05

N-741

Use of 22Cr-5Ni-3Mo-N (Alloy UNS S32205 Austenitic/ferritic Duplex
Stainless Steel) Forging, Plate, Welded and Seamless Pipe Tubing, and
Fittings to SA-240, SA-0789, A 790-04a, SA-815, Classes 2 and 3, Section III,
Division 1

10/11/05

N-744

Use of Metric Units Boiler and Pressure Vessel Code, Section III, Divisions 1
and 3, and Section V and IX

10/11/05

N-746

Use of 46Fe-24Ni-21Cr-6Mo-Cu-N (UNS N08367) Bolting Materials for
Class 2 and 3 Components, Section III, Division 1

1/05/06

N-756

Alternative Rules for Acceptability for Class 1 Valves, NPS (DN 25) and
Smaller with Nonwelded End connections Other than flanges, Section III,
Division 1

1/21/07

N-759-2

Alternative Rules for Determining Allowable External Pressure and
Comprehensive Stress for Cylinders, Cones, Spheres, and Formed Heads,
Section III, Division 1
(Note that N-759 was unconditionally approved in Revision 35 to Regulatory
Guide 1.84; N-759-1 was published in Supplement 2 to the 2007 Edition)

4/07E

N-760-2

Welding of Valve Plugs to Valve Stem Retainers, Classes 1, 2, and 3,
Section III, Division 1

7/07E

N-767

Use of 21 Cr-6Ni-9Mn (Alloy UNS S21904) Grade GXM-11 (Conforming to
SA-182/SA-182M and SA-336/SA-336M), Grade TPXM-11 (Conforming to
SA-312/SA-312M) and Type XM-11 (Conforming to SA-666) Material, for
Class 1 Construction, Section III, Division 1

4/07E

N-774

Use of 13Cr-4Ni (Alloy UNS S41500) Grade F6NM Forgings Weighing in
Excess of 10,000 lb (4 540 kg) and Otherwise conforming to the Requirements
of SA-336/SA-336M for Class 1, 2, and 3 Construction, Section III, Division 1

7/07E

N-782

Use of Editions, Addenda, and Cases, Section III, Division 1

9/07E

N-801

Rules for Repair of N-Stamped Class 1, 2, and 3 Components by Organization
Other Than the N Certificate Holder That Originally Stamped the Component
Being Repaired, Section III, Division 1

4/10E

N-802

Rules for Repair of Stamped Components by the N Certificate Holder That
Originally Stamped the Component, Section III, Division 1

4/10E

DG-1230, Page 9

2.

Conditionally Acceptable Section III Code Cases

The Code Cases listed in Table 2 below are acceptable to the NRC for application in the design
and construction of components and their supports for water-cooled nuclear power plants within the
limitations indicated by the NRC. Unless otherwise stated, limitations indicated by the NRC are in
addition to the conditions specified in the Code Case. Code Cases are published quarterly in supplements
to each edition. To assist users, new and revised Code Cases are shaded to distinguish them from those
approved in previous versions of this guide. The shading will assist in focusing attention during the public
comment period on the changes to the guide. For Code Cases previously listed in this guide, the third
column of Table 1 lists the date of ASME approval. For new or revised Code Cases, the third column of
Table 1 lists the supplement and edition in which each Code Case was published (e.g., “3/07E” means
Code Case Supplement 3 to the 2007 Edition).
Table 2. Conditionally Acceptable Section III Code Cases
Code Case
Number

Table 2
Conditionally Acceptable Section III Code Cases
Title/Condition

N-60-5

Material for Core Support Structures, Section III, Division , Class 1

Date or
Supplement/
Edition
2/20/04

The maximum yield strength of stain-hardened austenitic stainless steel shall not
exceed 90,000 psi in view of the susceptibility of this material to environmental
cracking.
Note: This condition was contained in RG 1.85, Rev. 31, May 1999, and was
inadvertently deleted when RG 1.84 and RG 1.85 were combined, i.e., all Section
III Code Cases were listed in RG 1.84.
N-62-7

Internal and External Valve Items, Section III, Division 1, Classes 1, 2, and 3

2/03/03

The Code requires that Class 1 and Class 2 valve manufacturers meet the
provisions of NCA-4000, “Quality Assurance.” Class 3 valve manufacturers
must also meet the provisions of NCA-4000 because all Code Class valve items
are subject to the licensee’s 10 CFR Part 50, Appendix B approved QA program.
N-71-18

Additional Materials for Subsection NF, Class 1, 2, 3, and MC Component
Supports Fabricated by Welding, Section III, Division 1
(1)
(2)

The maximum measured ultimate tensile strength (UTS) of the component
support material must not exceed 170 Ksi in view of the susceptibility of
high-strength materials to brittleness and stress corrosion cracking.
Certain applications may exist where a UTS value of up to 190 Ksi could
be considered acceptable for a material and, under this condition, the
Design Specification must specify impact testing for the material. For
these cases, it must be demonstrated by the applicant that:
the impact test results for the material meet Code requirements,
(a)
the impact test results for the material meet Code requirements,
(b)
the material is not subject to stress corrosion cracking by virtue of
the fact that:
(i)
a corrosive environment is not present, and
(ii) the component that contains the material has essentially no
residual stresses or assembly stresses, and

DG-1230, Page 10

5/09/03

Code Case
Number

Table 2
Conditionally Acceptable Section III Code Cases
Title/Condition

N-71-18
(cont’d)

Additional Materials for Subsection NF, Class 1, 2, 3, and MC Component
Supports Fabricated by Welding, Section III, Division 1
(3)

(4)

(5)

(6)

N-155-2

(3)

(4)
(5)

5/09/03

(iii) it does not experience frequent sustained loads in service.
In the last sentence of paragraph 4.2, reference must be made to paragraph
4.5.2.2, “Alternative Atmosphere Exposure Time Periods Established by
Test,” of the AWS D1.1 Code for the evidence presented to and accepted by
the Authorized Inspector concerning exposure of electrodes for longer
periods of time.
Paragraph 15.2.2 is not acceptable as written and must be replaced with the
following: AWhen not exempted by 15.2.1 above, the postweld heat
treatment must be performed in accordance with NF-4622 except that
ASTM A-710 Grade A Material must be at least 1000°F (540°C) and must
not exceed 1150°F (620°C) for Class 1 and Class 2 material and 1175°F
(640°C) for Class 3 material.
The new holding time at temperature for weld thickness (nominal) must be
30 minutes for 2 inch or less, 1 hour per inch for thickness over 2 inch to 5
inches, and for thicknesses over 5 inches, 5 hours plus 15 minutes for each
additional inch over 5 inches.
The fracture toughness requirements as listed in this Code Case apply only
to piping supports and not to Class 1, Class 2, and Class 3 component
supports.

Fiberglass Reinforced Thermosetting Resin Pipe, Section III, Division 1
(1)
(2)

Date or
Supplement/
Edition

The design temperature for spray pond piping must be 100°C (212°F).
The allowable design stress must be the value obtained from the minimum
hydrostatic design basis (HDB) in Table 3611-1 of Code Case N-155-2
(Procedure A or B) or the value determined as one-sixth of the stress
obtained from a short-time burst test for the pipe being qualified,
whichever is lower. The short-time burst strength must be determined by
bursting the pipe (ASTM D-1599-74) using free-end mounting after it has
been exposed to 105 pressure cycles from atmospheric to design pressure.
The value of “K” in equation 9 of paragraph 3652 must be limited to 1.2
unless it can be demonstrated that with the use of a large value of K1 the
functional capability of the system will not be impaired during upset and
emergency conditions.
RTR piping must be uninsulated or uncovered and installed under
conditions that make it readily accessible for inspection.
Preoperational and inservice inspections must be as follows:
(a)
During the preoperational testing period, tests must be made to
verify that the piping is free of vibration induced by weather
conditions or water flow that could fatigue the piping prematurely;
(b)
Fiberglass-reinforced piping components must be inspected in
accordance with ASME Code, Section XI, for Code Class 3
components. In addition, all pipe supports must be inspected;
(c)
Inspection frequency for piping must be increased to once annually
if an exterior weather-resistant coating is not provided.

DG-1230, Page 11

2/03/03

Code Case
Number

Table 2
Conditionally Acceptable Section III Code Cases
Title/Condition

N-208-2

Fatigue Analysis for Precipitation Hardening Nickel Alloy Bolting Material to
Specification SB-637 N07718 for Class 1 Construction, Section III, Division 1

Date or
Supplement/
Edition
4/07E

(1) In Figure A, the words “No mean stress” shall be implemented with the
understanding that it denotes “Maximum mean stress.”
(2) In Figure A, σy shall be implemented with the understanding that it denotes
σmax.
(Note that N-208-1 was unconditionally approved in Revision 35 to Regulatory
Guide 1.84)
N-249-14

Additional Materials for Subsection NF, Class 1, 2, 3, and MC Component
Supports Fabricated Without Welding, Section III, Division 1
(1)
(2)

N-520-2

2/20/04

The fracture toughness requirements apply only to piping supports and not
to Class 1, Class 2, and Class 3 component supports.
The following is to be added to paragraph (e) of the Code Case:
(a)
“For these cases, it must be demonstrated by the Owner that: (i) the
impact test results for the material meet Code requirements, and
(ii) the material is not subject to stress corrosion cracking by virtue
of the fact that: a corrosive environment is not present; the
component that contains the material has essentially no residual
stresses or assembly stresses; and it does not experience frequent
sustained loads in service.”

Alternative Rules for Renewal of Active or Expired N-type Certificates for Plants
Not in Active Construction, Section III, Division 1

4/07E

The Code Case is considered acceptable with one clarification: an AIA is an
Authorized Inspection Agency and the AIA employs the Authorized Nuclear
Inspector (ANI).
N-570-1

Alternative Rules for Linear Piping and Linear Standard Supports for Classes 1,
2, 3, and MC, Section III, Division 1

1/05/06

The provisions of ANSI/AISC N690-1994 s2, “Supplement No. 2 to the
Specification for the Design, Fabrication, and Erection of Steel of Safety-Related
Structures for Nuclear Facilities,” must be met.
N-595-3

Requirements for Spent Fuel Storage Canisters, Section III, Division 1
The canisters must be made from austenitic stainless steel Type 304 or 316.

DG-1230, Page 12

4/08/02

Code Case
Number

Table 2
Conditionally Acceptable Section III Code Cases
Title/Condition

N-626

Use of Plastic Analysis for the Design of Type B Containment Components for
Nuclear Material Transportation Casks, Section III, Division 3
(1)

(2)

(3)

N-656

Date or
Supplement/
Edition
7/23/02

For the acceptability of a design by analysis, Paragraph WB-3211,
“Requirements for Acceptability,” of Section III, Division 3, Subsection
WB, “Class TP (Type B) Containment,” Subparagraphs (a) through (d)
must be applied.
There is a typographical error in the title of Paragraph (a)(2) of the Code
Case. Paragraph WB-3277 does not exist. Paragraph WB-3227,
“Applications of Inelastic Analysis Procedures,” of Section III, Division 3,
Subsection WB, “Class TP (Type B) Containment,“ is to be used.
The first paragraph of WB-3324, “Design for Local Puncture Associated
with a Hypothetical Accident Condition,” of Section III, Division 3,
Subsection WB, “Class TP (Type B) Containment,” must be applied. The
second paragraph of WB-3324 may be applied. In lieu of the third
paragraph of WB-3324, the following may be applied: “In lieu of the
application of the equation for outer shell thickness (treq) the response of
the containment boundary to puncture test loadings may be evaluated using
plastic analysis according to the rules in Appendix F, “Rules for
Evaluation of Service Loadings with Level D Service Limits.”

Rules for the Construction of Inner Transportation Containments, Section III,
Division 3

2/25/02

The inner transportation containment must contain only solid and dry material.
N-757-1

Alternative Rules for Acceptability for Class 2 and 3 Valves (DN 25) and Smaller
with Welded and Nonwelded End Connections Other than Flanges, Section III,
Division 1
The design provisions of ASME Section III, Division 1, Appendix XIII, shall not
be used for Class 3 valves.

DG-1230, Page 13

2/07E

3.

Annulled Unconditionally Approved Section III Code Cases

The Code Cases listed in Table 3 were previously unconditionally approved by the NRC and have been
annulled by the ASME.
Table 3. Annulled Unconditionally Approved Section III Code Cases
Code Case
Number

Table 3
Annulled Unconditionally Approved Section III Code Cases

Annulment Date

N-1-7
(1332-7)

Requirements for Steel Forgings, Section III, Division 1

7/01/82

N-2
(1334-3)

Requirements for Corrosion-Resisting Steel Bars and Shapes, Section III

1/01/82

N-3-10
(1335-10)

Requirements for Bolting Materials, Section III

9/16/84

N-5-1

Nickel Chromium Age Hardenable Alloys (Alloy X750), Section III,
Division 1, Classes 1, 2, 3, MC, and CS

12/13/85

N-6
(1345-2)

Requirements for Nickel-Molybdenum-Chromium-Iron Alloys, Section III

3/01/79

N-7-1

High Yield Strength Steel, Class 1, Section II, Division 1

2/22/05

N-9-4
(1395-4)

SA-508, Class 2 Forgings with Modified Manganese Content, Section III

7/01/82

N-10
(1407-3)

Time of Examination for Classes, 1, 2, and 3, Section III Vessels

9/17/87

N-15
(1456-2)

Substitution of Ultrasonic Examination for Progressive Penetrant or
Magnetic Particle Examination of Partial Penetration and Oblique Nozzle
Attachment Welds, Section III

3/01/79

N-17
(1474-1)

Integrally Finned Tubes for Section III

1/21/91

N-20-4

SB-163, Cold Worked UNS N08800; and SB-163 UNS N06600,
UNS N06690, and UNS N08800 to Supplementary Requirements S2
of SB-163, Section III, Division 1, Class 1

9/18/01

N-22
(1498-1)

SA-508-Class 2 and 3, Minimum Tempering Temperature, Section III

7/01/82

N-24
(1516-2)

Welding of Seats or Minor Internal Permanent Attachments in Valves for
Section III Applications

1/01/80

N-30-1
(1539-1)

Metal Bellows and Metal Diaphragm Stem Sealed Valves, Section III,
Division 1, Classes 1, 2, and 3

1/01/81

N-32-3
(1541-3)

Hydrostatic Testing of Embedded Class 2 and Class 3 Piping for Section III,
Division 1 Construction

7/01/79

N-33
(1542-1)

Type 403 Forgings or Bars for Bolting Material, Section III

1/21/85

DG-1230, Page 14

Code Case
Number

Table 3
Annulled Unconditionally Approved Section III Code Cases

Annulment Date

N-35-1
(1552-1)

Design by Analysis of Section III, Class 1 Valves

7/01/79

N-37-3
(1557-3)

Steel Products Refined by Secondary Remelting, Section III and VIII,
Division 1 and 2

7/01/82

N-41
(1571)

Additional Material for SA-234 Carbon Steel Fittings, Section III

1/21/85

N-43
(1578)

SB-167 Nickel-Chromium-Iron (Alloy 600) Pipe or Tube, Section III

7/01/82

N-46
(1588)

Electro-Etching of Section III Code Symbols

3/19/82

N-48-2

Fabrication and Installation of Elevated Temperature Components,
Section III, Division 1

7/01/96

N-49-4

Examination of Elevated Temperature Nuclear Components, Section III,
Class 1

7/01/96

N-50-1

Testing of Elevated Temperature Components, Section III, Division 1,
Class 1

7/01/96

N-51-2

Protection Against Overpressure of Elevated Temperature Components,
Section III, Division 1, Class 1

7/01/96

N-55-1
(1609)

Inertia and Continuous Drive Friction Welding, Section III, Division 1

4/05/87

N-56
(1612)

Use of Type 308 Stainless Steel Rod and Bar for Section III, Class 1, 2, 3,
and CS Construction

7/01/78

N-61
(1620)

Stress Category for Partial Penetration Welded Penetrations, Section III,
Class Construction

1/08/82

N-65-1
(1626-1)

Normalized and Tempered 1-1/4 Cr Low Alloy Steel Forgings,
Section I and III

1/21/85

N-66-1
(1630-1)

External Pressure Charts for High Yield Strength Carbon Steels and Low
Alloy Steels (Yield Strength above 38 Ksi to 60 Ksi Inclusive) For
Section III, Class 1, 2, 3, and MC

12/05/87

N-68
(1634-2)

Use of SB-359 for Section III, Division, 1, Class 3 Construction

7/01/78

N-77
(1660)

Overpressure Protection Under Emergency Operating Conditions for
Section III, Class 1

7/01/77

N-81
(1665)

Pressure-Temperature Ratings for Class 1 Valves Made from 5 Cr-1/2 Mo,
Section III

7/01/78

N-82
(1677)

Clarification of Flange Design Loads, Section III, Class 1, 2, and 3

3/01/79

N-84
(1681-1)

Organizations Accepting Overall Responsibility for Section III Construction

3/01/79

DG-1230, Page 15

Code Case
Number

Table 3
Annulled Unconditionally Approved Section III Code Cases

Annulment Date

N-90
(1692)

Rules for Design of Welded Class 1 Pumps

7/01/78

N-94
(1700)

Determination of Capacities of Liquid Relief Valves, Section III, Division 1,
Class 1, 2, and 3

3/19/82

N-95-2
(1701-2)

Determination of Capacities of Vacuum Relief Valves, Section III,
Division 1, Classes 2, 3, and MC and Division 2 Concrete Containments

7/09/82

N-96-1
(1702-1)

Flanged Valves Larger than 24 inches for Section III, Division 1, Class 1, 2,
and 3 Construction

1/01/80

N-101
(1712)

Nameplates and Stamping for Section III, Division 1, Class 1, 2, 3 and MC
Construction as Referenced in NA-8300

3/01/79

N-102-2

Postweld Heat Treatment of P-1 Material, Section III, Class MC

6/30/84

N-107-1
(1722-1)

Vacuum, Carbon Deoxidized SA-508 Forgings, Section III, Division 1

1/08/82

N-108
(1724)

Deviation from the Specified Silicon Ranges in ASME Material
Specifications, Section III, Division 1, and VIII, Division 1 and 2

7/01/78

N-109
(1726)

Refinement of Low Alloy Steel Heat Affected Zone Under Overlay Cladding,
Section III, Division 1, Class 1 Components

3/01/79

N-111
(1729)

Minimum Edge Distance-Bolting for Section III, Division 1, Class 1, 2, and
3 and MC Construction of Component Supports

3/01/79

N-114
(1732)

Hardsurfaced Valves with Inlet Connections less than 2-in. Nominal Pipe
Size for Section III, Division 1, Class 1 and 2 Construction

1/01/79

N-115
(1733)

Evaluation of Safe Shut Down Earthquake Loadings for Section III,
Division 1, Class MC Containment Vessels

1/01/78

N-119-6

Pump Internal Items, Section III, Division 1, Class 1, 2, and 3

3/14/94

N-121
(1744)

Carbon Steel Pipe Flanges Larger than 24 in., Section III, Division 1,
Class 2 and 3 Construction

3/01/79

N-123
(1746)

Leak Testing of Seal Welds, Section III, Division 1, Class 1, 2, and 3
Construction

3/01/79

N-124
(1747)

Requirements for Martensitic Stainless Forgings with 13% Chromium and
4% Nickel, Section III, Division 1

7/13/87

N-125
(1748)

Low Carbon Austenitic Stainless Steel Pipe Welded With Filler Metal,
Section III, Division 1, Construction

7/01/78

N-126
(1754)

Hard Surfacing by the Spray-Fuse Method, Section III, Class 1, 2, and 3
Construction

7/01/88

N-127
(1755-1)

Alternative Rules for Examination of Welds in Piping, Section III, Class 1
and 2 Construction

2/20/92

N-139

Testing of Electroslag Wire and Flux for Class 1, 2, 3, MC, and
CS Construction, Section III, Division 1

1/01/79

N-140
(1772)

Use of SA-453 Bolts in Service Below 800°F Without Stress Rupture Tests,
Section III, Division 1

12/31/85

DG-1230, Page 16

Code Case
Number

Table 3
Annulled Unconditionally Approved Section III Code Cases

Annulment Date

N-142-1
(1774-1)

Minimum Wall Thickness for Class 2 and 3 Valves, Section III, Division 1

1/01/80

N-147
(1781)

Use of Modified SA-487 Grade CA6NM, Section III, Division 1,
Class 1, 2, 3, MC or CS

7/01/78

N-148
(1782)

Use of Copper-Nickel Alloy 962 for Castings, Section III, Division 1,
Class 3 Construction

6/30/83

N-156
(1793)

Structural Steel Rolled Shapes, Section III, Division I, Class 2, 3, and MC

2/14/86

N-157
(1794)

Use of Seamless Al-Br, Alloy CDA 614 Pipe, Section III, Division 1, Class 3

1/07/83

N-158
(1795)

Examination of Weld Repairs in Forgings, Section III, Division 1,
Class 1, 2, 3, MC and CS

7/01/78

N-159
(1796)

Body Neck Thickness Determination for Valves with Inlet Connections
4-Inch Nominal Pipe Size and Smaller, Section III, Division 1, Class 1, 2,
and 3

7/01/78

N-174
(1812)

Size of Fillet Welds for Socket Welding of Piping, Section III, Division 1

1/01/81

N-176-1
(1819-1)

Use of Type XM-19 for Construction, Section III, Division 1, Class 1, 2,
and 3

8/25/83

N-177
(1820)

Alternative Ultrasonic Examination Technique, Section III, Division 1

1/01/84

N-178

Use of ASTM B271, CDA 954, Alloy 9C for Class 3 Construction,
Section III, Division 1

1/01/80

N-179

Openings in Valves for Section III, Division 1, Class 1, 2 and 3 Construction

7/11/80

N-180

Examination of Springs for Class 1 Component Standards Supports,
Section III, Division 1

7/01/78

N-181

Steel Castings Refined by the Argon Decarburization Process, Section III,
Division 1, Construction

7/11/80

N0182

Alternate Rules for Procedure Qualification Base Material Orientation,
Section III, Division 1, Class 2 and 3 Construction

7/01/81

N-183

Use of Modified SA-182 Grade F22 for Section III, Division 1, Class 1, 2
and 3 Construction

1/01/80

N-184

Roll Threading of SA-453 Bolting for Section III, Division 1, Class 1, 2, 3, or
CS Construction

7/01/79

N-188-1

Use of Welded Ni-Fe-Cr-Mo-Cu (Alloy 825) and Ni-Cr-Mo-Cb (Alloy 625)
Tubing, Section III, Division 1, Class 2 and 3

8/14/96

N-189

Primary Membrane Plus Primary Bending Stress Intensity Limits for Other
Than Solid Rectangular Sections for Section III, Division 1, Class MC
Construction

7/01/79

N-190

Use of SA-455 for Class 3 Components, Section III, Division 1

7/01/78

DG-1230, Page 17

Code Case
Number

Table 3
Annulled Unconditionally Approved Section III Code Cases

Annulment Date

N-193

Use of SB-61 and SB-62 Bronze for Section III, Division 1, Class 3 Flange
and Socket Weld End Valves

11/21/80

N-196-1

Exemption from the Shakedown Requirements When Plastic Analysis Is
Performed for Section III, Division 1, Class 1 and CS Construction

7/01/92

N-204

Use of Modified SA-508, Class 3, and SA-541, Class 3 for Section III,
Division 1, Class 1, 2, and 3 Components

1/01/81

N-206

Use of ASTM B151-75 Copper-Nickel Alloy 706 Rod and Bar for
Section III, Division 1, Class 3 Construction

6/30/83

N-207-1

Use of Modified SA-479 Type XM-19 for Section III, Division 1, Class 1, 2,
3, or CS Construction

1/21/85

Welding Procedure Qualification of Dissimilar Metal Welds When

1/01/81

N-212
(1693)

AButtering@ with Alloy Weld Metal and Heat Treatment May Be Involved,
Section III, Division 1, and Section IX.

N-214-2

Use of SA-351 Grade CN7M, for Valves, Section III, Division 1

12/31/83

N-215

Integrally Finned Titanium Tubes, Section III, Division 1, Class 3
Construction

5/15/81

N-217-1

Postweld Heat Treatment of Weld Deposit Cladding on Classes 1, 2, 3, MC,
and CS Items, Section III, Division 1

2/23/87

N-220

Code Effective Date for Component Supports, Section III, Division 1

7/13/81

N-223

Requirements for Stainless Steel Precipitation Hardening, Section III,
Division 1, Class MC

11/20/81

N-224-1

Use of ASTM A500 Grade B and ASTM A501 Structural Tubing for Welded
Attachments for Section III, Class 2, 3, and MC

4/05/90

N-225

Certification and Identification of Material for Component Supports,
Section III, Division 1

1/01/81

N-226

Temporary Attachment of Thermocouples, Section III, Division 1,
Class 1, 2 and 3 Component Supports

1/01/80

N-227

Examination of Repair Welds, Section III, Class 2 and 3 Tanks

7/09/82

N-228

Alternate Rules for Sequence of Completion of Code Data Report Forms and
Stamping for Section III, Class 1, 2, 3 and MC Construction

3/19/82

N-229

Alternate Rules for Fabrication Welding SB-148 Alloy CDA 954 for
Section III, Division 1, Class 3 Construction

1/21/88

N-231

Alternate Methods for Leak Detection in the Attachment Welds of Leak
Chase Channels, Section III, Division 2, Class CC

7/01/92

N-233

Alternate Rules for PWHT of P-No. 6, Group 4 Material for Section III,
Division 1, Class 3 Construction

9/17/87

N-237-2

Hydrostatic Testing of Internal Piping, Section III, Division 1, Classes 2
and 3

7/01/88

N-240

Hydrostatic Testing of Open Ended Piping, Section III, Division 1

7/01/97

N-241

Hydrostatic Testing of Piping, Section III, Division 1

7/01/97

N-245

Use of ASTM B61-76 and B62-76 Copper Alloy Castings for Section III,

7/17/85

DG-1230, Page 18

Code Case
Number

Table 3
Annulled Unconditionally Approved Section III Code Cases

Annulment Date

Division 1, Class 3 Construction
N-246-2

SB-169 Alloy C61400, Section III, Division 1, Class 3 Construction

7/27/95

N-247

Certified Design Report Summary for Component Standard Supports,
Section III, Division 1, Class 1, 2, 3 and MC

4/30/93

N-248

Alternative Reference Radiographs, Section III, Division 1, Classes 1, 2, 3,
MC, and CS Construction

7/01/80

N-259

Ni-Cu-Al Bolting Material SB 164 Modified, Section III, Division 1, Class 3

1/01/84

N-261

Weld Procedure Qualification for Materials with Impact Requirements for
Section III, Division 1, Class 3 Construction

12/13/82

N-262

Electric Resistance Spot Welding for Structural Use in Component Supports,
Section III, Division 1

7/27/91

N-265-1

Modified SA-487 Castings, Section III, Division 1, Class 1

8/14/97

N-267

Double-Wall Radiography, Section III, Division 1, Class 1 and 2

7/01/81

N-271

Simplified Method for Analyzing Flat Face Flanges with Metal to Metal
Contact Outside the Bolt Circle for Section III, Class 2, 3, and MC
Construction

2/14/86

N-272

Compiling Data Report Forms, Section III, Division 1

1/01/82

N-276

Welding of SA-358 Pipe, Section III, Division 1

2/14/86

N-277

Use of Type XM-19 Austenitic Stainless Steel for Section III, Division 1
Class MC Construction

9/17/80

N-280

Alternate Rules for Examination of Welds in Section III, Class 3 Storage
Tanks

7/01/81

N-281

Welding Operator Performance Qualification, Section III, Division 1

7/01/81

N-282

Nameplates for Valves, Section III, Division 1, Class 1, 2, and 3
Construction

7/30/89

N-294

SB-148 Alloys 952 and 954, and SB-62 Alloy 836 Fittings, Section III,
Division 1, Class 2

7/27/95

N-295

NCA-1140, Materials, Section III, Division 1

6/30/82

N-296

Welding Material, Section III, Division 1 Construction

12/01/83

N-298

Examination of Component Supports, Section III, Division 1, Class 1, 2, 3,
and MC

12/01/83

N-299-1

Use of Nickel-Chromium-Molybdenum-Columbium Alloy 625 Forgings,
Section III, Division 1, Class 2 and Class 3 Components

2/23/87

N-300

Pressure-Temperature Ratings, Hydrostatic Tests, and Minimum Wall
Thickness of Valves, Section III, Division 1, Class 1

12/01/83

N-302

Tack Welding, Section III, Division 1, Construction

11/28/83

N-304-4

Use of 20Cr-25Ni-6Mo (Alloy UNS N08366) Plate, Sheet, Strip, and Welded
Pipe, Class 2 and 3, Section III, Division 1

1/01/03

N-309-1

Identification of Materials for Component Supports, Section III, Division 1

7/01/95

N-313

Alternative Rules for Half-Coupling Branch Connections, Section III,

7/01/96

DG-1230, Page 19

Code Case
Number

Table 3
Annulled Unconditionally Approved Section III Code Cases

Annulment Date

Division 1, Class 2
N-316

Alternative Rules for Fillet Weld Dimensions for Socket Welding Fittings,
Section III, Division 1, Class 1, 2, and 3

8/14/93

N-317

ASTM A276 Bar, Section III, Division

7/01/82

N-320

Alternate PWHT for SA-487, Grade CA6NM, Section III, Division 1

12/31/83

N-321-1

Use of Modified SA-249, Grade TP 304, Section III, Division 1, Class 1

12/85/88

N-324

Qualification of Authorized Nuclear Inspector Supervisor (Concrete) and
Authorized Nuclear Inspector (Concrete), Section III, Division 2,
Classes CB and CC

7/27/95

N-328

Thermit Brazing or Welding of Nonstructural Attachments, Section III,
Division 1

9/17/87

N-336

Examination of Welds Inaccessible During Pressure Test, Section III,
Division 1, Class MC

6/30/83

N-337-1

Use of ASTM B 525-70 Grade II, Type II, Sintered Austenitic Stainless Steel
for Classes 2, 3, and MC Component Standard Supports, Section III,
Division 1

3/14/94

N-339

Examination of Ends of Fillet Welds, Section III, Division 1,Classes 1, 2,
and MC

9/17/84

N-341

Certification of Level III NDE Examiner, Section III, Division 1 and 2

7/01/88

N-342

Use of SA-249 and SA-312 Type 317 Stainless Steel, Section III, Division 1,
Classes 1, 2, and 3

4/02/85

N-345-1

Attachment of AMS 5382 Alloy 31 Seat Rings by Friction Welding,
Section III, Division 1, Classes 1, 2, and 3

3/28/01

N-346

Explosive Welding, Section III, Division 1

6/30/86

N-347

Continuous Electric Resistance Seam Welding of P-No. 8 Materials for
Component Supports, Section III, Division 1

12/13/85

N-349

Pressure Testing Piping Systems, Section III, Division 1, Classes 2 and 3

12/13/85

N-352-1

Use of SA-638 Grade 660 Forgings and Bars Below 700°F Without Stress
Rupture Tests, Section III, Division 1

6/30/86

N-353

Marking of SA-354 Grade BD Bolting, Section III, Division 1

9/05/88

N-354-1

Subcontracted Service, Section III, Division 2

8/14/94

N-355

Calibration Block for Angle Beam Ultrasonic Examination of Large Fittings
in Accordance with Appendix III-3410

8/09/96

N-357

Certification of Material for Component Supports, Section III, Division 1,
Subsection NF

7/01/88

N-359

Weld Connection for Coaxial Cylinders, Section III, Division 1, Class 1

12/31/84

DG-1230, Page 20

Code Case
Number

Table 3
Annulled Unconditionally Approved Section III Code Cases

Annulment Date

N-362-2

Pressure Testing of Containment Items, Section III, Division 1,Classes 1, 2,
and MC

7/01/88

N-367

SA-372 Type V, Grade 1, Class B, Section III, Division 1

2/19/89

N-368

Pressure Testing of Pump Discharge Piping, Section III, Division 1,
Classes 2 and 3

7/01/95

N-370-2

Modified SA-705 Type XM-13 Forgings, Section III, Division 1

8/14/97

N-371-1

12Cr-1W-1Mo-1/4V Martensitic Stainless Steel Valve Internals, Section III,
Division 1

7/18/88

N-372

SB-163 Ni-Fe-Cr-Mo-Cu Alloy 825 (UNS N08825) Tubing, Section III,
Division 1

12/31/83

N-376

Pressure Testing of Embedded Class 2 and 3 Piping, Section III, Division 1

7/30/86

N-377

Effective Throat Thickness of Partial Penetration Groove Welds,
Section III, Division 1, Classes 1, 2, and 3

12/31/83

N-378

Examination of Piping Support Material, Section III, Division 1, Class 1

10/28/86

N-379-1

Bimetallic Tubing, Section III, Division 1, Class 1

7/18/91

N-384-1

Use of Prepackaged General Purpose Cement Grouts, Epoxy Grouts, and
Epoxy Bonding, Section III, Division 2, Class CC

7/27/91

N-387

Certification of Level III NDE Examiner, Section III, Division 2

9/18/01

N-388

Component Support Bolting, Section III, Division 1, Classes 2, 3, and MC

2/23/87

N-393

Repair Welding Structural Steel Bolted Shapes and Plates for Component
Supports, Section III, Division 1

7/27/95

N-394

Restricting Lift to Achieve Reduced Relieving Capacities of Full Lift, Nozzle
Type, and Flat Seated Safety and Safety Relief Valves for Compressible
Fluid Applications, Section III, Division 1, Classes 2 and 3

3/02/01

N-395

Laser Welding, Section III, Division 1

9/18/01

N-403

Reassembly of Subsection NF Component and Piping Supports, Section III,
Division 1

7/01/95

N-410

Certified Relieving Capacities of Pressure Relief Valves Having Set
Pressure of 3 psig up to but Not including 15 psig Installed for Overpressure
Protection of Compressible Fluid Systems, Section III, Division 1, Classes 2
and 3

3/14/00

N-412

Alternative Rules for Witnessing the Piping System Pressure Tests of
Classes 1, 2, and 3 Piping Systems, Section III, Division 1

4/15/91

N-413

Minimum Size of Fillet Welds for Subsection NF Linear Type Supports,
Section III, Division 1

2/14/88

N-414

Tack Welds for Class 1, 2, 3 and MC Components and Piping Supports

2/20/92

N-418-1

Use of Seamless Ni-Fe-Cr-Mo-Cu Low Carbon (UNS N08028
and UNS N08904) Tubing, Section III, Division 1, Classes 2 and 3

7/27/95

DG-1230, Page 21

Code Case
Number

Table 3
Annulled Unconditionally Approved Section III Code Cases

Annulment Date

N-420

Linear Energy Absorbing Supports for Subsection NF, Classes 1, 2, and 3
Construction

1/01/99

N-421

Brazing Using a Radiant Energy Source, Section III, Division 1

6/30/86

N-433

Non-Threaded Fasteners for Section III, Division 1, Class 1, 2, and 3
Components and Piping Supports

12/16/95

N-438-4

UNS N08367 Material, Section III, Division 1, Class 2 and 3 Construction

7/01/98

N-439-1

Use of 20Cr-18Ni-6Mo (Alloy UNS S31254) Forgings, Plate, Seamless and
Welded Pipe, and Welded Tube, Class 2 and 3 Construction, Section III,
Division 1

9/18/01

N-440-1

Use of 20Cr-18Ni-6Mo (Alloy UNS J93254) Castings, Class 2 and 3
Construction, Section III, Division 1

9/18/01

N-441-2

Use of 20Cr-18Ni-6Mo (Alloy UNS S31254) Fittings, Class 2 and 3
Construction, Section III, Division 1

9/18/01

N-442

1977 Addendum to ANSI/ASME PTC 25.3-1976, Safety and Safety Relief
Valves, Class 1, 2, 3, and MC, Section III, Division 1

3/08/92

N-443-2

High Yield Strength Cr-Mo Steel, Class 1 Components, Section III,
Division 1

1/01/01

N-451

Alternative Rules for Analysis of Piping Under Seismic Loading, Class 1,
Section III, Division 1

8/14/96

N-459

SA-508 Basic Oxygen-Ladle Furnace Process for Code Construction,
Section III, Division 1

3/14/94

N-462

Alternative Rules for Analysis of Piping Products Under Seismic Loading,
Class 2 and 3 Piping Systems, Section III, Division 1

5/24/96

N-464

Laser Welding of Lap Joints, Section III, Division 1, Classes 2 and 3
Construction

5/09/03

N-466-1

Modified 9Cr-1Mo Material, Section III, Division 1, Classes 1, 2, and 3

8/14/97

N-468

Alternative Method of Earthquake Description for Class 2 and 3 Piping of
Low Seismicity Sites, Section III, Division 1

1/01/92

N-470

Class MC Material Requirements [NE-2121(c)], Section III, Division 1

3/08/92

N-474-2

Design Stress Intensities and Yield Strength Values for UNS N06690 With a
Minimum Specified Yield Strength of 35 ksi, Class 1 Components, Section
III, Division 1

1/01/00

N-475

Materials in Inventory, Section III, Division 1

12/11/92

N-476

Class 1, 2, 3, and MC Linear Component Supports - Design Criteria for
Single Angle Members, Section III, Division 1, Subsection NF

7/01/96

N-482

Direct Quenched Stainless Bar, ASTM A 479-88b, Section III, Division 1

3/05/93

N-484-1

Real Time Radioscopic Examination of Welds, Section III, Division 1

12/16/94

N-492-1

Grade 9 Titanium Alloy Tubing, Section III, Division 1, Class 1, 2, and 3

1/01/00

DG-1230, Page 22

Code Case
Number

Table 3
Annulled Unconditionally Approved Section III Code Cases

Annulment Date

N-497-1

Use of Fe-Ni-Cr-Mo-N (C-N-3MN) Cast Materials, Section III, Division 1,
Class 2 and 3 Construction

1/01/99

N-501

Alternative Rules for NCA-3800, 1990 Addenda, Section III, Division 1

12/31/93

N-502

SA-268, Grade 26-3-3 (UNS S44660), Section III, Classes 2 and 3

1/01/00

N-507

Identification of Welders, Section III, Division 2

7/27/05

N-519

Use of 6061-T6 and 60610T651 Aluminum for Class 1 Nuclear Components,
Section III, Division 1

2/03/02

N-540

Guidance on Implementation of NCA-3800 Revisions in 1994 Addenda,
Section III, Division 1

6/30/98

N-549

Stamping and Flow Certification of Rupture Disk Devices, Classes 2 and 3,
Section III, Division 1

3/19/99

N-550

Alternative Rules for Examination of Welds in Instrument Tubing, Classes 1
and 2, Section III, Division 1

5/20/01

N-551

Alternative Methods of Analysis, NC/ND-3673.1, Class 2 and 3
Applications, Section III, Division 1

8/14/97

N-559

SA-203, Grade E (Plate) and SA-350, Grade LF3 (Forging), 3.5% Ni
Nominal Composition Used in Class 1 Construction, Section III, Division 1

5/24/99

N-570

Alternative Rules for Linear Piping and Linear Standard Supports for
Class 1, 2, 3, and MC, Section III, Division 1

3/28/06

N-572

Use of SG-425 (UNS N08825) Bar and Rods for Class 1 Construction,
Section III, Division 1

5/24/99

N-596

Use of Alternative Reference Specimens, Section III, Division 1

2/20/04

N-608

Applicable Code Edition and Addenda, NCA-1140(a)(2), Section III,
Division 1

5/20/01

1141-7

Foreign Produced Steel

7/23/76

1434-1

Postweld Heat Treatment of SA-487 Class 8N Steel Castings, Section III

1/01/78

1461-1

Electron Beam Welding, Section I, III, and VIII, Division 1 and 2

2/16/77

1470-2

External Pressure Charts for High-Strength Carbon Steels and for
Low-Alloy Steels, Section VIII, Division 1 and 2, and Section III

11/04/74

1471-1

Vacuum Electron Beam Welding of Tube Sheet Joints, Section III

1/01/78

1475-1

Ferritic-Austenitic Stainless Steel Seamless Tubes for Section III,
Class 2 and 3 Construction

7/01/75

1477-1

Use of 1970 Addenda of ANSI B31.7, Section III

1/01/78

1494-1

Weld Procedure Qualification Test, Section III

1/01/78

1506

Stress Intensification Factors, Section III, Class 2 and 3 Piping

1/01/78

1515

Ultrasonic Examination of Ring Forgings for Shell Sections, Section III,
Class 1 Vessels

7/01/77

1529

Materials for Instrument Line Fittings, Section III

7/01/73

DG-1230, Page 23

Code Case
Number

Table 3
Annulled Unconditionally Approved Section III Code Cases

Annulment Date

1531

Electrical Penetrations, Special Alloys for Electrical Penetration Seals,
Section III

3/21/77

1532

Section III, Class 3 Components Made of 8 Percent and 9 Percent Nickel
Steel

1/01/78

1533

Pressure Temperature Ratings of SA-351 Grades CF8A, CF3, and CF3M,
Section III

7/01/75

1535-2

Hydrostatic Testing of Section III, Class 1 Valves

3/21/77

1536

Closing Seam for Electrical Penetrations for Section III, Class 2, 3, and MC

7/01/77

1553-1

Upset Heading and Roll Threading of SA-453 for Bolting in Section III

1/01/76

1555-1

Certification of Safety Relief Valves, Section III, Division 1

1/01/78

1567

Testing Lots of Carbon and Low Alloy Steel Covered Electrodes, Section III

1/01/78

1568

Testing Lots of Flux Cored and Fabricated Carbon and Low Alloy Steel
Welded Electrodes, Section III

1/01/78

1573

Vacuum Relief Valves, Section III

1/01/78

1574

Hydrostatic Test Pressure for Safety Relief Valves, Section III

12/31/74

1580-1

Buttwelded Alignment Tolerance and Acceptable Slopes for Concentric
Centerlines for Section III, Class 1, 2, and 3 Construction

1/01/78

1581

Power-Operated Pressure Relief Valves, Section III

3/01/79

1583

Use of 80-40 Carbon Steel Castings, Section III

3/21/77

1587

SA-508 Class 3 Forgings with 0.4/1.0 Ni for Section III and VIII,
Division 2 Construction

12/31/75

1590

Chemical Analysis Variations, Section III Construction

3/21/77

1601

Limits of Reinforcement for Two-Thirds Area, Section III, Class 1

7/01/74

1602-1

Use of SB-42 Alloy 122, SB-111 Alloys 122, 715 and 706 and
SB-466 Alloys 706 and 715, Section III, Class 2 and 3 Components

12/31/74

1603

Toughness Tests When Cross-Section Limits Orientation and
Location of Specimens

7/01/74

1605

Cr-Ni-Mo-V Bolting Material for Section III, Class 1 Components

3/17/80

1608-1

Use of ASME SB-265, SB-337, SB-338, and SB-381, Grades 1, 2, 3,
and 7 Unalloyed Titanium and ASTM B-363 Titanium Welding Fittings,
Section III, Class 2 and 3 Components

3/21/77

1613

Use of SA-372 Class IV Forgings, Section III Construction

1/01/78

1614

Hydrostatic Testing of Piping Prior To or Following the Installation
of Spray Nozzles for Section III, Classes 1, 2, and 3 Piping Systems

1/01/79

1615

Use of A587-73, Section III, Class 3 Construction

1/01/78

1616

Ultrasonic Examination of Seamless Austenitic Steel Pipe, Section III,
Class 1 Construction

7/01/75

DG-1230, Page 24

Code Case
Number

Table 3
Annulled Unconditionally Approved Section III Code Cases

Annulment Date

1622

PWHT of Repair Welds in Carbon Steel Castings, Section III, Class 1, 2,
and 3

1/01/76

1623

Design by Analysis for Section III, Class 1 Sleeve-Coupled and Other
Patented Piping Joints

3/01/79

1625

Repair of Section III Class 2 and 3 Tanks

12/31/74

1633

Brazing of Seats to Class 1, 2, and 3 Valve Body or Bonnets, Section III

1/01/78

1637

Effective Date for Compliance with NA-3700 of Section III

1/01/75

1645

Use of DeLong Diagram for Calculating the Delta Ferrite Content
of Welds in Section III, Class 1, 2, and CS Construction

1/01/76

1648

SA-537 Plates for Section III, Class 1, 2, 3, and MC Components

7/01/76

1649

Modified SA-453-GR 660 for Class 1, 2, 3, and CS Construction

1/01/76

1650

Use of SA-414 Grade C for Class 2 and 3 Components, Section III,
Division 1

12/31/74

1651

Interim Requirements for Certification of Component Supports, Section III,
Subsection NF

3/01/79

1657

Stress Criteria for Class 2 and 3 Atmospheric and Low Pressure
(0-15 psig) Steel Storage Tanks

7/01/77

1659

Interconnection of Two Piping Systems for Section III, Class 1, 2, and 3
Construction

7/01/77

1661

Postweld Heat Treatment P-No.1 Materials for Section III, Class 1 Vessels

1/01/78

1662

Shop Assembly of Components, Appurtenances and Piping Subassemblies
for Section III, Class 1, 2, 3, and MC Construction

1/01/78

1664

Use of Cr-Ni-Fe-Mo-Cu-Cb Stabilized Alloy Cb-3 for Section III
Class 2 and 3 Construction

3/21/77

1666

Use of SB-12, Alloy 122 for Class 2 and 3 Construction

7/01/75

1672

Nuclear Valves for Section III, Division 1, Class 1, 2, 3 Construction

3/21/77

1675

Tubesheet to Shell or Formed Head Weld Joints, Section III, Class 1 Vessels

7/01/76

1676

Clarification of Stress Intensities in Curved Pipe or Welded Elbows,
Section III

7/01/76

1678

Butterfly Valves of Circular Cross Section Larger than 24 in. NPS for
Section III, Class 2 and 3 Construction

1/01/80

1682-1

Alternate Rules for Material Manufacturers and Suppliers, Section III,
Subarticle NA-3700

12/31/75

1683-1

Bolt Holes for Section III, Class 1, 2, 3 and MC Component Supports

7/01/76

1684

A637 Grade 718 for Bolting Class 1 and 2 Construction

1/01/76

1685

Furnace Brazing Section III, Class 1, 2, 3 and MC Construction

1/01/78

1686

Furnace Brazing, Section III, Subsection NF, Component Supports

1/01/78

1690

Stock Materials for Section III Construction, Section III, Division 1

1/01/77

DG-1230, Page 25

Code Case
Number

Table 3
Annulled Unconditionally Approved Section III Code Cases

Annulment Date

1691

Ultrasonic Examination in Lieu of Radiography of Repair Welds for Vessels,
Section III, Class 1

1/01/78

1703

Brazing of Copper Alloys, Section III, Class 2

1/01/78

1706

Data Report Forms for Component Supports, Section III, Class 1, 2
and 3

12/31/75

1713

Small Material Items, Section III, Division 1, Class 1, 2, 3, CS and MC

12/31/75

1718

Design of Structural Connections for Linear Type Component Supports,
Section III, Division 1, Class 1, 2 and 3 and MC

7/01/76

1719

Single-Welded, Full-Penetration Sidewall Butt Joints in Atmospheric
Storage Tanks, Section III, Division 1, Class 2

7/01/76

1728

Steel Structural Shapes and Small Material Products for Components
Supports, Section II, Division 1 Construction

7/01/77

1740

Weld Metal Test, Section III, Class 1, 2, 3, MC and CS

7/01/76

1741-1

Interim Rules for the Required Number of Impact Tests for Rolled Shapes,
Section III, Division 1, Subsection NF, Components Supports

1/01/78

1742

Use of SB-75 Annealed Copper Alloy 122, Section III, Division 1, Class 2
Construction

7/01/76

1743

Use of SB-98 Cu-SiB Rod CDA651 Section III, Division 1, Class 2
Components

7/01/76

1760

Maximum Dimensions for Isolated Pores in WeldsBClass 1 Components,
Section III, Division 1

7/01/77

1765

Machining After Hydrostatic Testing Class 2 and 3 Construction,
Section III, Division 1

7/01/77

1766

Testing Requirements for Welding Materials, Class 1, 2, 3, MC and CS
Construction, Section III, Division 1

7/01/77

1767

Examination of Tubular Products Without Filler Metal-Class 1
Construction, Section III, Division 1

1/01/77

1768

Permanent Attachments to Containment VesselsBClass MC, Section III,
Division 1

1/01/78

1769-1

Qualification of NDE Level III Personnel, Section III, Division 1

10/01/77

1773

Use of Other Product Forms of Materials for Valves, Section III,
Division 1

7/01/77

1775

Data Report Forms for Core Support Structures, Class CS, Section III,
Division 1

8/13/79

1777

Use of SA-106, Grade C in Class MC Construction, Section III, Division 1

7/01/77

1787

Depth of Weld Repairs for Forgings, Section III, Division 1, Class 1, 2, 3,
MC and CS Construction

1/01/78

1798

Use of ASTM A352-75, Grades LCA and LCC, Section III, Division 1,
Class 1, 2, and 3

1/01/78

DG-1230, Page 26

Code Case
Number

Table 3
Annulled Unconditionally Approved Section III Code Cases

Annulment Date

1808

F-Number Classification of Low Alloy and Carbon Steel Bare Rod
Electrodes, Sections I, II, III, IV, V, VIII, and IX.

1/01/78

1810

Testing Lots of Carbon Steel Solid, Bare Welding Electrode or Wire,
Section III, Division 1, Class 1, 2, 3, MC, and CS

3/03/80

1819

Use of Type XM-19 for Construction, Section III, Division 1, Class 1, 2, 3

1/01/78

DG-1230, Page 27

4.

Annulled Conditionally Acceptable Section III Code Cases

The Code Cases listed in Table 4 were conditionally approved by the NRC but were subsequently
annulled by the ASME.
Table 4. Annulled Conditionally Acceptable
Section III Code Cases
Code Case
Number

Table 4
Annulled Conditionally Acceptable Section III Code Cases

Annulment
Date

Title/Condition
N-11-5
(1414-5)
N-31-1

High Yield Strength Cr-Mo Steel for Section III, Division 1, Class 1 Vessels

8/29/80

The information required to be developed by Note 1 in the Code Case should be
provided in each referencing safety analysis report.
Elastomer Diaphragm Valves, Section III, Division 1, Classes 2 and 3

7/01/93

Each applicant who applies the Code Case should indicate in the referencing
safety analysis report that the service life of the elastomer diaphragm should not
exceed the manufacturer=s recommended service life. This recommended
service life should not exceed 1/3 of the minimum cycle life as established by
the requirements of paragraph 3 of the Code Case. In addition, the service life
of the elastomer diaphragm should not exceed 5 years, and the combined service
and storage life of the elastomer diaphragm should not exceed 10 years.
N-32-4

Hydrostatic Testing of Embedded Class 2 and Class 3 Piping
for Section III, Division 1 Construction

3/16/84

The acceptance of Code Case N-32-4 was based on the following clarification
and interpretation. Code Case N-32-4 does not replace paragraph NC/ND-6129,
“Provisions for Embedded or Inaccessible Welded Joints in Piping,” of the
Code. The intent of the Code Case is to (1) provide additional testing above
Code requirements and (2) permit liquid penetrant or magnetic particle testing in
place of radiographic testing for Class 3 piping with 3/8" nominal wall thickness
or less.
Paragraph (1) contains an additional requirement to the Code. It was, therefore,
acceptable but unnecessary to include in the Code Case.
Paragraph (2) is a variation in the volumetric examination technique and was
acceptable as written. Paragraph (3) contains an additional requirement and is
not a relaxation of the Code. It was, therefore, acceptable but unnecessary to
include in the Code Case.
N-92
(1698)

Waiver of Ultrasonic Transfer Method, Section III, V, and VIII,
Division 1
The material from which the basic calibration block is fabricated should be of
the same product form, alloy, and heat treatment as the material being
examined. Alloys of equivalent P-number grouping may be used for the
fabrication of calibration blocks if adjustments to signal height can be made to
compensate for sound beam attenuation difference between the calibration block
and the material under examination by following the transfer method procedure
of T-535.1(d), Article 5, Section V, ASME BPV Code, 1977 Edition.

DG-1230, Page 28

7/13/81

Code Case
Number

Table 4
Annulled Conditionally Acceptable Section III Code Cases

Annulment
Date

Title/Condition
N-100
(1711)

N-106-2
(1720-2)
N-110
(1727)

N-116
(1734)

Pressure Relief Valve Design Rules, Section III, Division 1, Class 1, 2 and 3

1/01/83

The following information should be provided in the safety analysis report:
(1) If stress limits are used in excess of those specified for the upset operating
condition, it should be demonstrated how the pressure relief function is
ensured. Refer to paragraph 3.1, Section I, of the Code Case for Class
and paragraph 3.2, Section II, of the Code Case for Class 2 and 3
pressure relief valves.
(2) If Code Case 1660 is to be used in conjunction with the Code Case, it
should be stated that the stress limits of Code Case 1660 supersede those
of paragraph 3.2(b), Section I, of Code Case 1711. Functional assurance
of (1) above is required in all situations.
Weld End Preparation for Section III, Division 1 Construction

8/14/93

The acceptance of weld end preparations other than those shown in Figures 1, 2,
and 3 of the Code Case should be evaluated on a case-by-case basis.
Alternate Test Fluids, Section III, Division 1

1/01/79

The applicant should provide justification in the referencing safety analysis
report for the fluid selected for use in the pressure test. The information
provided should demonstrate that the fluid selected will not have deleterious
effects on the material of the pressure boundary and that the fluid may be safely
used at the specified temperature and pressure of the test. When the fluid
selected for use is the operating fluid, additional information is not required.
Weld Design for Use for Section III, Division 1, Class 1, 2, 3 and MC
Construction of Component Supports

1/01/78

If the configuration of Figure 1 of the Code Case is used for Class 1 and MC
components supports, full penetration welds should be used. The application of
the configuration shown in Figures 2 and 3 should be restricted to the welding
of cans for spring encapsulation in spring hangers. In Figure 3, the length of the
leg of the fillet weld adjacent to the plate should be equal to the thickness of the
exposed edge of the plate; also, the leg of the fillet weld adjacent to the shell
should be equal to the thickness of the exposed end of the shell.
N-146-1
(1780-1)

Hydrostatic Testing and Stamping of Components, Section III,
Division 1, Construction
On a generic basis, the application of the Code Case is limited to pumps and
valves. Application to other components should be treated on a case-by-case
basis. Each licensing application in which the Code Case is to be used should
contain information showing that, as a minimum the closure fixture will impose
loads that result in stresses equal to or greater than those induced during the
hydrostatic test of a complete pump assembly. A closure fixture for the part
being tested that is similar in size and shape to the actual mating part is
considered adequate to impose these loads. It is not intended that piping
reaction loadings be simulated in the hydrostatic testing.

DG-1230, Page 29

1/01/82

Code Case
Number

Table 4
Annulled Conditionally Acceptable Section III Code Cases

Annulment
Date

Title/Condition
N-175
(1818)
N-199

Welded Joints in Component Standard Supports, Section III, Division 1

7/01/79

That portion of the unwelded housing that is limited to 90° maximum should
include a minimum of two sectors that are uniform in length.
Intervening Elements, Section III, Division 1, Classes 1, 2, 3 and MC
Component Construction

1/01/81

The applicants should provide information in the referencing safety analysis
report that demonstrates that all intervening elements have been designed in
compliance with the requirements of the respective design specification.
N-238

High Temperature Furnace Brazing of Seat Rings in Valve Bodies or Bonnets
for Section III, Division 1, Class 1, 2, and 3 Valves

1/01/82

The furnace brazing process procedure qualification should include a
verification for nonsensitization as given in ASTM A 262-70, “Standard
Practices for Detecting Susceptibility to Intergranular Attack in Austenitic
Stainless Steels” (Ref. 5), Practices A or E, or ASTM A 708-74, “Practice for
Detection of Susceptibility to Intergranular Corrosion in Severely Sensitized
Austenitic Stainless Steels” (Ref. 6), whenever materials subject to sensitization
are to be brazed. Documentation is required that a nonsensitizing brazing
procedure was employed for valves produced to this Case.
N-242-1

Materials Certification, Section III, Division 1, Classes 1, 2, 3, MC, and CS
Construction

6/30/84

Applicants should identify in their safety analysis reports the components and
supports for which the Code Case is being applied and should specify the
respective paragraphs of the Code Case.
N-252

Low Energy Capacitive Discharge Welding Method for Temporary or
Permanent Attachments to Components and Supports, Section III, Division 1,
and XI

7/01/82

The applicant should indicate in the safety analysis report the application, the
material, and the material thickness to which the strain gage or thermocouple
will be attached by CD welding.
N-260-2

Weld Repair of SA-182 Type 316 Forgings, Section III, Division 1, Classes 1, 2,
3, and MC

12/05/88

Type 308L welding materials should not be used to repair grade F 316 N
forgings because of the difference in strength levels.
N-263

Alternate Thread Forms, Series and Fits for Component Supports, Section III,
Division 1
The following information should be provided in the safety analysis report:
(1) a description of the application,
(2) a need for the use of the Code Case, and
(3) a demonstration that support design will withstand maximum conditions
of loading with the worst combination of thread tolerance.

DG-1230, Page 30

3/17/83

Code Case
Number

Table 4
Annulled Conditionally Acceptable Section III Code Cases

Annulment
Date

Title/Condition
N-274

Alternative Rules for Examination of Weld Repairs for Section III, Division 1
Construction

6/30/86

The ultrasonic examination procedures shall be proven by actual demonstration,
to the satisfaction of the Authorized Nuclear Inspector, that the procedures are
capable of detecting unacceptable cracks according to Section XI requirements.
N-275

Repair of Welds, Section III, Division 1

12/31/83

Use of the Code Case is applicable only when the removal of an indication
requires that the full weld thickness be removed and, in addition, the backside of
the weld assembly joint is not accessible for the removal of examination
material. If an indication is removed and weld-metal layers still remain, it is not
acceptable to gouge through the wall in order to qualify for use of the Code
Case. Instead, examination of the cavity is required when such an indication
has been removed.
N-279

Use of Torquing as a Locking Device for Section III, Division 1, Class 1, 2, 3,
and MC Component Supports

7/13/81

When torquing or other preloading is used as a locking device and the joint is
later unloaded or disassembled, the bolting should be replaced unless it can be
demonstrated or proved to the Authorized Nuclear Inspector that the original
bolting has not been permanently strained.
N-292

Depositing Weld Metal Prior to Preparing Ends for Welding, Section III,
Division 1, Class 1, 2, and 3

2/20/04

Class 3 piping that is longitudinally welded and that has a weld efficiency factor
of 1.0 as selected from Table ND-3613.4-1, “Weld Joint Efficiency Factor,”
must receive a 100 percent volumetric examination (RT or UT) of the deposited
weld metal in accordance with the requirements of ND-5000, “Examination.”
N-310-1

Certification of Bolting Materials, Section III, Division 1, Class 1, 2, 3, MC
and CS

7/01/82

Each applicant who applies the Code Case should indicate in the referencing
port safety analysis report:
(1) in what way the bolting does not meet NCA-3800 (or NA-3700),
(2) where the bolting will be used in the plant, and
(3) how it will be shown that the bolting material properties required by the
equipment support design specification are present in the actual bolting
material.
N-314

Alternate Rules for Thread Engagement, Section III, Division 1

5/11/84

Applicants should identify in their safety analysis report:
(1) the minimum length of thread engagement and
(2) the procedure used to establish thread engagement.
N-348
N-348-1
N-348-2

Use of SA-574 Socket Weld Head Cap Screws, Section III, Division 1
Applicants should justify in their safety analysis reports why use of these socket
head cap screws will not result in early failure from stress corrosion cracking.

DG-1230, Page 31

9/7/85
2/20/89
8/14/93

Code Case
Number

Table 4
Annulled Conditionally Acceptable Section III Code Cases

Annulment
Date

Title/Condition
N-350

Postweld Heat TreatmentBThickness of Material, Section III, Division 1

9/05/85

Applicants wishing to use this Code Case for other than P-1 materials should
demonstrate that the use of this Code Case will not adversely affect the required
material properties.
N-383-1

Weld Repair of SA-182 Austenitic Forgings, Section III, Division 1, Classes 1,
2, and 3

9/5/85

Applicants who apply the provisions of this Code Case to permit material
manufacturers to weld repair austenitic forgings without resolution heat
treatment should provide justification to the NRC staff (via the safety analysis
report) why this is acceptable for their applications, including their evaluation of
the susceptibility for stress corrosion cracking.
N-397

Alternative Rules to the Spectral Broadening Procedures of N-1226.3 for
Classes 1, 2, and 3 Piping, Section III, Division 1

2/20/87

The Code Case is acceptable for specific plant applications on a case-by-case
basis pending revision of Regulatory Guide 1.122, “Development of Floor
Design Response Spectra for Seismic Design of Floor-Supported Equipment or
Components” (Ref. 7).
N-398

Reporting of Charpy-V Notch Test Results, Section III, Division 1

2/20/87

The Code Case is not acceptable to steam generator or reactor coolant pump
supports. Applicants wishing to use this Code Case should indicate in the safety
analysis report the component supports to which the case is applied for review
on a case-by-case basis.
N-404

Annealed Alloy UNS N06625 Over UNS N06600 Bimetallic Tubing,
Section III, Division 1, Class 1

12/11/95

The outside layer of the bimetallic tubing should be limited to a minimum of 5
percent and to a maximum of 40 percent of the wall thickness. The tolerance on
the outside layer of material should not exceed -0.000 to +0.007 inches of the
specified design wall thickness.
N-411-1

Alternative Damping Values for Response Spectra Analysis of Class 1, 2, and 3
Piping, Section III, Division 1
(1)

(2)

N-411-1

5/05/00

The Code Case damping should be used completely and consistently, if
used at all. [For equipment other than piping, the damping values
specified in Regulatory Guide 1.61, “Damping Values for Seismic
Design of Nuclear Power Plants” (Ref. 8), are to be used.]
The damping values specified may be used only in those analyses in
which current seismic spectra and procedures have been employed. Such
use is to be limited only to response spectral analyses [similar to that
used in the study supporting its acceptance, NUREG/CR-3526, “Impact
of Changes in Damping and Spectrum Peak Broadening on the Seismic
Response of Piping Systems” (Ref. 9)]. The acceptance of the use with
other types of dynamic analyses (e.g., time-history analyses or
independent support motion method) is pending further justification.

Alternative Damping Values for Response Spectra Analysis of Class 1, 2, and 3

DG-1230, Page 32

5/05/00

Code Case
Number

Table 4
Annulled Conditionally Acceptable Section III Code Cases

Annulment
Date

Title/Condition
(cont’d)

Piping, Section III, Division 1
(3)
(4)

(5)

N-430

Alternative Requirements for Welding Workmanship and Visual Acceptance
Criteria for Class 1, 2, 3 and MC Linear-Type and Standard Supports,
Section III, Division 1
(1)
(2)

1361-2

When used for reconciliation work or for support optimization of existing
designs, the effects of increased motion on existing clearances and online mounted equipment should be checked.
This Code Case is not appropriate for analyzing the dynamic response of
piping systems using supports designed to dissipate energy by yielding
(i.e., the design of which is covered by Code Case N-420). (5) This
Code Case is not applicable to piping in which stress corrosion cracking
has occurred unless a case-specific evaluation is made and is reviewed by
the NRC staff.
This Code Case is not applicable to piping in which stress corrosion
cracking has occurred unless a case-specific evaluation is made and is
reviewed by the NRC staff.
7/01/93

The applicant should demonstrate that the applicable supports are not
subject to cyclic loading in excess of 20,000 cycles; and
The first sentence of 3.0(f)(1) should be replaced with the following: “For
material 3/8 in. and less nominal thickness, undercut depth of 1/32 in. on
one side of the member for the full length of the weld, or 1/32 in. on one
side for one-half the length of the weld, and 1/16 in. for one-fourth of the
length of the weld on the face of a rectangular tube or one-fourth the
length of the weld on the same side of the member is acceptable.”

Socket Welds, Section III

3/01/79

Code Case 1361-2 was acceptable when used in connection with Section III,
paragraph NB-3356, Fillet Welds.
1412-4

Modified High Yield Strength Steel for Section III, Division 1, Class 1 Vessels

1/01/77

The information required to be developed by Note 1 in the Code Case should be
provided in each referencing safety analysis report. The material given in the
Inquiry section of the Code Case should be SA-508, Class 4b, instead of
SA-508, Class 4.
1423-2

Wrought Type 304 and 316 with Nitrogen Added, Sections I, III, VIII,
Division 1 and 2
Code Case 1423-2 was acceptable subject to compliance with the
recommendations contained in Regulatory Guide 1.31, “Control of Ferrite
Content in Stainless Steel Weld Metal” (Ref. 10), and Regulatory Guide 1.44,
“Control of the Use of Sensitized Stainless Steel” (Ref. 11).

DG-1230, Page 33

7/01/77

Code Case
Number

Table 4
Annulled Conditionally Acceptable Section III Code Cases

Annulment
Date

Title/Condition
1521-1

Use of H-Grades of SA-240, SA-479, SA-336, and SA-358, Section III

1/01/78

Code Case 1521-1 was acceptable subject to compliance with the
recommendations contained in Regulatory Guide 1.31, “Control of Ferrite
Content in Stainless Steel Weld Metal” (Ref. 10), and Regulatory Guide 1.44,
“Control of the Use of Sensitized Stainless Steel” (Ref. 11).
1528-3

High Strength Steel SA-508, Class 2 and SA-541, Class 2 Forgings,
Section III, Class 1 Components

1/01/78

The information required to be developed by Note 1 in the Code Case should be
provided in each referencing safety analysis report.
1569

Design of Piping for Pressure Relief Valve Station, Section III

7/01/79

Code Case 1569 was acceptable subject to compliance with
the recommendations contained in Regulatory Guide 1.67, “Installation of OverPressure Protection Devices” (Ref. 12).
1606-1

Stress Criteria Section III, Classes 2 and 3 Piping Subject to Upset, Emergency,
and Faulted Operating Conditions

7/01/77

Code Case 1606-1 was acceptable subject to the interpretation that the stress
limit designations of “Upset,” “Emergency,” and “Faulted” do not necessarily
imply agreement with specified plant conditions applicable to ASME Code
Class 2 and 3 components for fluid systems. These designations should be
established and justified in the design specifications.
1607-1

Stress Criteria for Section III, Classes 2 and 3 Vessels Designed to
NC/NC-3300 Excluding the NC-3200 Alternate

7/01/77

Code Case 1607-1 was acceptable subject to the interpretation that the stress
limit designations of “Upset,” “Emergency,” and “Faulted” do not necessarily
imply agreement with specified plant conditions applicable to ASME Code
Class 2 and 3 components for fluid systems. These designations should be
established and justified in the design specifications.
1635-1

Stress Criteria for Section III, Class 2 and 3 Valves Subjected to Upset,
Emergency, and Faulted Operating Conditions

7/01/77

Code Case 1635-1 was acceptable subject to the interpretation that the stress
limit designations of “Upset,” “Emergency,” and “Faulted” do not necessarily
imply agreement with specified plant conditions applicable to ASME Code
Class 2 and 3 components for fluid systems. These designations should be
established and justified in the design specifications.
1636-1

Stress Criteria for Section III, Class 2 and 3 Pumps Subjected to Upset,
Emergency, and Faulted Operating Conditions
Code Case 1636-1 was acceptable subject to the interpretation that the stress
limit designations of “Upset,” “Emergency,” and “Faulted” do not necessarily
imply agreement with specified plant conditions applicable to ASME Code
Class 2 and 3 components for fluid systems. These designations should be
established and justified in the design specifications.

DG-1230, Page 34

7/01/77

Code Case
Number

Table 4
Annulled Conditionally Acceptable Section III Code Cases

Annulment
Date

Title/Condition
1689-1

Alternate PWHT Time and Temperature for SA-182 Grade F-22,
SA-387 Grade 22, Class 2, and SA-335 Grade P-22 Section III,
Class 1, 2, 3 and CS

1/01/78

The alternate postweld heat treatment should be prequalified along with the
applicable welding procedure in accordance with ASME Section IX.
1783-1

Qualification of Nondestructive Examination Personnel, Section III,
Division 1
The first sentence of paragraph (1) should be replaced with the following: “The
certification of the Level III nondestructive examination personnel for the
purpose of this Section of the Code will be the responsibility of the employer of
the Level III individual. If the employer is not a Certificate Holder, then the
verification of such certificate is the responsibility of the Certificate Holder.”

DG-1230, Page 35

1/01/79

5.

Code Cases Superseded by Revised Code Cases

The Code Cases listed in Table 5 were approved in prior versions of this guide and have since been
superseded by revised Code Cases (on or after July 1, 1974). The date in Column 3 indicates the date on
which the ASME approved the revision to the Code Case. Note: Code Cases listed without conditions
were unconditionally approved for use by the NRC.
Table 5. Section III Code Cases That Have Been
Superseded by Revised Code Cases on or after July 1, 1974
Code Case
Number

Table 5
Code Cases That Have Been Superseded by Revised
Code Cases on or After July 1, 1974

Revision
Date

N-4-11
(1337-11)
N-4-12

Special Type 403 Modified Forgings or Bars, Section III, Division 1, Class 1 and CS

1/12/05

N-5
(1344-5)

Nickel-Chromium, Age-Hardenable Alloys (Alloy X750), Section III

12/13/82

N-7
(1358-5)

High Yield Strength Steel, Section III, Division 1, Class 1 Vessels

12/13/82

2/12/08

The information required to be developed by Note 1 in the Code Case should be
provided in each referencing safety analysis report.

N-20
(1484-3)
N-20-1

SB-163 Nickel-Chromium-Iron Tubing (Alloy 600 and 690) at Nickel-Iron-Chromium
Alloy 800 at a Specified Minimum Yield Strength of 40.0 Ksi,
Section III, Division 1, Class 1

N-20-2
N-20-3

SB-163 Nickel-Chromium-Iron Tubing (Alloy 600 and 690) at Nickel-Iron-Chromium
Alloy 800 at a Specified Minimum Yield Strength of 40.0 Ksi and Cold Worked Alloy
800 at a yield strength of 47.0 Ksi, Section III, Division 1, Class 1

11/30/88
2/26/99

N-31
(1540-2)

Elastomer Diaphragm Valves, Section III, Class 2 and 3

7/18/85

9/05/85
12/07/87

Each applicant who applies the Code Case should indicate in the referencing safety
analysis report that the service life of the elastomer diaphragm should not exceed the
manufacturer’s recommended service life. This recommended service life should not
exceed 1/3 of the minimum cycle life as established by the requirements of paragraph 3
of the Code Case. In addition, the service life of the elastomer diaphragm should not
exceed 5 years, and the combined service and storage life of the elastomer diaphragm
should not exceed 10 years.

N-55
(1609-1)

Inertia and Continuous Drive Friction Welding, Section I, III, IV, VIII,
Division 1 and 2, and IX

4/05/84

N-60
(1618-2)
N-60-1

Material for Core Support Structures, Section III, Division 1, Subsection NG

5/25/83

Welding of age-hardenable alloy SA-453 Grade 660 and SA-637
Grade 688 should be performed when the material is in the solution-treated condition.

9/17/84

DG-1230, Page 36

Code Case
Number
N-60-2
N-60-3
N-60-4

N-62-2
(1621-2)
N-62-3
N-62-4
N-62-5
N-62-6
N-71-7
(1644-7)
N-71-8
(1644-8)

N-71-9
(1644-9)

Table 5
Code Cases That Have Been Superseded by Revised
Code Cases on or After July 1, 1974
Material for Core Support Structures, Section III, Division 1, Subsection NG
Welding of age-hardenable alloy SA-453 Grade 660 and SA-637 Grade 688 should be
performed when the material is in the solution-treated condition. For SA-479 material,
the maximum yield strength should not exceed 90,000 psi in view of the susceptibility of
this material to environmental cracking.
Internal and External Valve Items, Section III, Division 1, Class 1, 2 and 3 Line Valves
The Code requires that Class 1 and Class 2 valve manufacturers meet the provisions of
NCA 4000, “Quality Assurance,” and, in addition, Class 3 valve manufacturers should
also meet the provisions of NCA-4000.

Revision
Date
9/05/85
5/13/91
2/15/94

7/18/85
9/05/85
7/24/89
12/11/89
5/11/94

Additional Materials for Component Supports, Section III, Division 1, Subsection NF,
Class 1, 2, 3 and MC Component Supports

5/15/78

The maximum measured ultimate tensile strength (UTS) of the component support
material should not exceed 170 Ksi in view of the susceptibility of high-strength
materials to brittleness and stress corrosion cracking. Certain applications may exist
where a UTS value of up to 190 Ksi could be considered acceptable for a material and,
under this condition, the Design Specification should specify impact testing for the
material. For these cases, it should be demonstrated by the applicant that:
(1) the impact test results for the material meet Code requirements and
(2) the material is not subject to stress corrosion cracking by virtue of the fact that
(a)
a corrosive environment is not present, and
(b)
the component that contains the material has essentially no residual
stresses or assembly stresses, and it does not experience frequent sustained
loads in service.

1/07/80

Additional Materials for Component Supports Fabricated by Welding,
Section III, Division 1, Subsection NF, Class 1, 2, 3, and MC Component Supports

5/11/81

In the last sentence of paragraph 5.3, reference should be made to paragraph 4.5.2.2,
“Alternate Atmosphere Exposure Time Periods Established by Test,” of the AWS D.1.1
Code for the evidence presented to and accepted by the Authorized Inspector concerning
exposure of electrodes for longer periods of time.

DG-1230, Page 37

Code Case
Number
N-71-10
N-71-11

Table 5
Code Cases That Have Been Superseded by Revised
Code Cases on or After July 1, 1974
Additional Materials for Component Supports Fabricated by Welding,
Section III, Division 1, Subsection NF, Class 1, 2, 3, and MC Component Supports

Revision
Date
6/17/82
2/14/83

The maximum measured ultimate tensile strength (UTS) of the component support
material should not exceed 170 Ksi in view of the susceptibility of high-strength
materials to brittleness and stress corrosion cracking. Certain applications may exist
where a UTS value of up to 190 Ksi could be considered acceptable for a material and,
under this condition, the Design Specification should specify impact testing for the
material. For these cases, it should be demonstrated by the applicant that:
(1) the impact test results for the material meet Code requirements and
(2) the material is not subject to stress corrosion cracking by virtue of the fact that
(a) a corrosive environment is not present, and
(b) the component that contains the material has essentially no residual stresses
or assembly stresses, and it does not experience frequent sustained loads in
service.
In the last sentence of paragraph 5.3, reference should be made to paragraph 4.5.2.2,
“Alternate Atmosphere Exposure Time Periods Established by Test,” of the AWS D.1.1
Code for the evidence presented to and accepted by the Authorized Inspector concerning
exposure of electrodes for longer periods of time.
N-71-12

Additional Materials for Component Supports Fabricated by Welding,
Section III, Division 1, Class 1, 2, 3 and MC
The maximum measured ultimate tensile strength (UTS) of the component support
material should not exceed 170 Ksi in view of the susceptibility of high-strength
materials to brittleness and stress corrosion cracking. Certain applications may exist
where a UTS value of up to 190 Ksi could be considered acceptable for a material and,
under this condition, the Design Specification should specify impact testing for the
material. For these cases, it should be demonstrated by the applicant that:
(1) the impact test results for the material meet Code requirements and
(2) the material is not subject to stress corrosion cracking by virtue of the fact that
(a) a corrosive environment is not present, and
(b) the component that contains the material has essentially no residual stresses
or assembly stresses, and it does not experience frequent sustained loads in
service.
In the last sentence of paragraph 5.3, reference should be made to paragraph 4.5.2.2,
“Alternate Atmosphere Exposure Time Periods Established by Test,” of the AWS D.1.1
Code for the evidence presented to and accepted by the Authorized Inspector concerning
exposure of electrodes for longer periods of time. Paragraph 16.2.2 is not acceptable as
written and should be replaced with the following: “When not exempted by 16.2.1,
above, the postweld heat treatment shall be performed in accordance with NF-4622
except that for ASTM A-710 Grade A material, it should be at least 1000°F (540°C) and
should not exceed 1150°F (620°C) for Class 1 and Class 2 material and 1175°F (640°C)
for Class 3 material. The new holding time at temperature for weld thickness (nominal)
should be 30 minutes for 2 inch or less, 1 hour per inch for thickness over 2 inch to 5
inches, and 5 hours plus 15 minutes for each additional inch over 5 inches.”

DG-1230, Page 38

2/20/84

Code Case
Number
N-71-13
N-71-14
N-71-15
N-71-16
N-71-17

Table 5
Code Cases That Have Been Superseded by Revised
Code Cases on or After July 1, 1974
Additional Materials for Subsection NF, Classes 1, 2, 3 and MC Component Supports
Fabricated by Welding, Section III, Division 1
The maximum measured ultimate tensile strength (UTS) of the component support
material should not exceed 170 Ksi in view of the susceptibility of high-strength
materials to brittleness and stress corrosion cracking. Certain applications may exist
where a UTS value of up to 190 Ksi could be considered acceptable for a material and,
under this condition, the Design Specification should specify impact testing for the
material. For these cases, it should be demonstrated by the applicant that:
(1) the impact test results for the material meet Code requirements, and
(2) the material is not subject to stress corrosion cracking by virtue of the fact that
(a) a corrosive environment is not present, and
(b) the component that contains the material has essentially no residual stresses
or assembly stresses, and it does not experience frequent sustained loads in
service.
In the last sentence of paragraph 5.3, reference should be made to paragraph 4.5.2.2,
“Alternate Atmosphere Exposure Time Periods Established by Test,” of the AWS D.1.1
Code for the evidence presented to and accepted by the Authorized Inspector concerning
exposure of electrodes for longer periods of time. Paragraph 16.2.2 is not acceptable as
written and should be replaced with the following: “When not exempted by 16.2.1,
above, the postweld heat treatment should be performed in accordance with NF-4622
except that for ASTM A-710 Grade A material, it should be at least 1000°F (540°C) and
should not exceed 1150°F (620°C) for Class 1 and Class 2 material and 1175°F (640°C)
for Class 3 material. The new holding time at temperature for weld thickness (nominal)
should be 30 minutes for 2 inch or less, 1 hour per inch for thickness over 2 inch to 5
inches, and 5 hours plus 15 minutes for each additional inch over 5 inches. The fracture
toughness of Classes 1, 2, and 3 component supports should be characterized in
accordance with Section 5.3.4 of NUREG-0800, “Standard Review Plan for the Review
of Safety Analysis Reports for Nuclear Power Plants” (Ref. 13), or on a case-by-case
basis. The fracture toughness requirements as listed in this Code Case apply only to
piping supports and not to Class 1, Class 2, and Class 3 component supports.”

Revision
Date
12/05/85
12/16/86
2/12/93
12/31/96
12/08/00

N-95-1
(1701-1)

Determination of Capacities of Vacuum Relief Valves, Section III, Division 1 and 2,
Class MC

7/09/79

N-102-1
(1714-2)

Postweld Heat Treatment of P-1 Material, Section III, Class MC

8/28/78

N-119-2
(1739-2)
N-119-3
(1739-3
N-119-4
(1739-4)
N-119-5

Pump Internal Items, Section III, Division 1, Class 1, 2, and 3

8/25/80

N-122

Stress Indices for Structural Attachments, Class 1, Section III, Division 1

7/24/89

N-133
(1761-1)

Use of SB-148 Alloy CA954 for Section III, Division 1, Class 2 or 3 Flanged End Valves

1/14/77

N-133-1
N-133-2

Use of SB-148 Alloys 952 and 954, Section III, Division 1, Class 3

5/19/85
7/18/85

12/01/80
7/18/85
9/05/85

DG-1230, Page 39

Code Case
Number

Table 5
Code Cases That Have Been Superseded by Revised
Code Cases on or After July 1, 1974

Revision
Date

N-154
(1791)

Projection Resistance Welding of Valve Seats, Section III, Division 1, Class 1, 2 and 3
Valves

7/18/85

N-160
(1797)

Finned Tubing for Construction, Section III, Division 1

7/18/85

N-188

Use of Welded Ni-Fe-Cr-Mo-Cu (Alloy 825) and Ni-Cr-Mo-Cb (Alloy 625) Tubing,
Section III, Division 1, Class 3

1/01/78

N-192
N-192-1
N-192-2

Use of Flexible Hose for Section III, Division 1, Class 1, 2, and 3 Construction

8/30/79
9/16/81
7/23/02

The applicant should indicate system application, design and operating pressure, and
pressure-temperature rating of the flexible hose. Data to demonstrate compliance of the
flexible hose with NC/ND-3649, particularly NC-ND-3649.4(e), are required to be
furnished with the application.

N-196

Exemption from the Shake-down Requirements When Plastic Analysis is Performed for
Section III, Division 1, Class 1 Construction

1/08/79

N-207

Use of Modified SA-479 Type XM-19 for Section III, Division 1, Class 1, 2, or 3
Construction

3/19/79

N-208
N-208-1

Fatigue Analysis for Precipitation Hardening Nickel Alloy Bolting Material to
Specification SB-637 N07718 for Section III Division 1, Class 1 Construction

8/14/96
2/14/03

N-214
N-214-1

Use of SA-351, Grade CN7M, for Valves for Section III, Division 1, Construction

9/07/82
5/25/83

N-224

Use of ASTM A500 Grade B and ASTM A501 Structural Tubing for Welded Attachments
for Section III, Class 2 and 3 Construction

5/11/81

N-237

Hydrostatic Testing of Internal Piping, Section III, Division 1

9/07/82

N-237-1

Hydrostatic Testing of Internal Piping, Section III, Division 1, Classes 2 and 3

5/25/83

N-242

Materials Certification, Section III, Division 1, Classes 1, 2, 3, MC, and CS
Construction

4/10/80

Applicants should identify the components and supports requiring the use of paragraphs
1.0 through 4.0 of the Code Case in their safety analysis reports.
N-246

Use of SB-169 Alloy CA614, Section III, Division 1, Class 3

9/07/82

N-246-1

SB-169, Alloy C 61400, Section III, Division 1, Class 3

5/25/83

N-249

Additional Materials for Component Supports Fabricated Without Welding, Section III,
Division 1, Subsection NF, Class 1, 2, 3, and MC Component Supports

5/11/81

Footnote 2 of the Code Case should apply to all materials listed in Tables 1, 2, 3, 4, and
5 of the Code Case and should be so indicated on line 5 of the “Reply.”
N-249-1

Additional Materials for Component Supports Fabricated Without Welding, Section III,
Division 1, Subsection NF, Class 1, 2, 3, and MC Component Supports

6/17/82

Paragraph 7 of the AReply@ should reference the requirements of NF-2600 instead of
NF-2800. This is a typographical error in that NF-2800 does not exist.
N-249-2
N-249-3

Additional Materials for Subsection NF Class 1, 2, 3, and MC Component Supports
Fabricated Without Welding, Section III, Division 1

2/14/83
2/20/84

N-249-4

Additional Material for Subsection NF, Classes 1, 2, 3, and MC Component Supports

9/17/84

DG-1230, Page 40

Code Case
Number
N-249-5

Table 5
Code Cases That Have Been Superseded by Revised
Code Cases on or After July 1, 1974
Fabricated Without Welding, Section III, Division 1

Revision
Date
4/08/85

The fracture toughness requirements as listed in Code Case N-249-4 apply only to
piping supports and not to Classes 1, 2, and 3 component supports. The fracture
toughness of Classes 1, 2, and 3 component supports should be characterized in
accordance with Section 5.3.4 of NUREG-0800, “Standard Review Plan for the Review
of Safety Analysis Reports for Nuclear Power Plants” (Ref. 13), or on a case-by-case
basis.
N-249-6
N-249-7
N-249-8
N-249-9
N-249-10
N-249-11
N-249-12
N-249-13

Additional Material for Subsection NF, Classes 1, 2, 3, and MC Component Supports
Fabricated Without Welding, Section III, Division 1
The fracture toughness requirements apply only to piping supports and not to Classes 1,
2, and 3 component supports. The fracture toughness of Classes 1, 2, and 3 component
supports should be characterized in accordance with Section 5.3.4 of NUREG-0800,
“Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power
Plants” (Ref. 13), or on a case-by-case basis. The following is to be added to paragraph
(5) of the Code Case: “For these cases, it should be demonstrated by the Owner that: (1)
the impact test results for the material meet Code requirements, and (2) the material is
not subject to stress corrosion cracking by virtue of the fact that: (a) a corrosive
environment is not present and (b) the component that contains the material has
essentially no residual stresses or assembly stresses, and it does not experience frequent
sustained loads in service.”

9/05/85
12/05/85
12/16/86
5/06/89
5/13/91
2/12/93
5/11/94
12/08/00

N-260

Weld Repair of SA-182 Type 316 Forgings, Section III, Division 1,
Classes 1, 2, 3, and MC

7/18/85

N-260-1

Weld Repair of SA-182 Type 316 Forgings, Section III, Division 1,
Classes 1, 2, 3, and MC

12/05/85

Type 308 L welding materials should not be used to repair grade F 316 N forgings
because of the difference in strength levels.
N-265

Modified SA-487 Castings, Section III, Division 1, Class 1

5/19/85

N-284-1

Metal Containment Shell Buckling Design Methods, Section III, Division 1, Class MC

10/02/00

This Code Case is listed in Regulatory Guide 1.193.
N-299

Use of Nickel-Chromium-Molybdenum-Columbium Alloy 625 Forgings,
Section III, Division 1, Class 2 and Class 3 Components

7/18/85

N-304
N-304-1
N-304-2
N-304-3

Use of 20 Cr-25Ni-6Mo (Alloy UNS N08366) Welded Tubes for Section III, Division 1,
Classes 2 and 3 Construction

7/12/84
5/19/85
12/05/85
2/23/87

N-309

Identification of Materials for Component Supports, Section III, Division 1

5/11/84

DG-1230, Page 41

Code Case
Number
N-318
N-318-1
N-318-2
N-318-3
N-318-4

Table 5
Code Cases That Have Been Superseded by Revised
Code Cases on or After July 1, 1974
Procedure for Evaluation of the Design of Rectangular Cross Section Attachments on
Class 2 or 3 Piping, Section III, Division 1
Applicants should identify in their safety analysis report:
(1) the method of lug attachment,
(2) the piping system involved, and
(3) the location in the system where the Code Case is to be applied.

Revision
Date
2/20/84
7/12/84
9/05/85
12/11/89
4/28/94

N-319
N-319-1
N-319-2

Alternate Procedure for Evaluation of Stresses in Butt Weld Elbows in Class 1 Piping,
Section III, Division 1

7/24/89
8/14/90
1/17/00

N-321

Use of Modified SA-249, Type 304, Section III, Division 1, Class 1 Construction

12/05/85

N-337

Use of ASTM B 525-70 Grade II, Type II, Sintered Austenitic Stainless Steel for
Class 2, 3, and MC Component Standard Supports, Section III, Division 1

7/18/85

N-345

Attachment of AMS 5382 Alloy 31 Seat Rings by Friction Welding, Section III,
Division 1, Classes 1, 2, and 3

12/13/82

N-352

Use of SA-638 Grade 660 Forgings and Bars Below 700°F Without Stress Rupture
Tests, Section III, Division 1

7/18/85

N-362

Alternate Rules for Pressure Testing of Containment Items, Section III,
Division 1

12/13/82

N-362-1

Pressure Testing of Containment Items, Section III, Division 1, Classes 1, 2, and MC

7/12/84

N-370
N-370-1

Modified SA-705 Grade XM-13 Forgings, Section III, Division 1

7/18/85
12/05/85

N-371

12Cr-1W-1Mo-1/4V Martensitic Stainless Steel Valve Internals, Section III, Division 1

7/18/85

N-373-1
N-373-2

Alternative PWHT Time at Temperature for P-No. 5 Material, Section III, Division 1,
Classes 1, 2, and 3

9/07/01
11/02/04

N-379

Bimetallic Tubing Section III, Division 1, Class 1

7/18/85

N-383

Weld Repair of SA-182 Austenitic Forgings, Section III, Division 1, Classes 1, 2, and 3

7/18/85

Applicants who apply the provisions of the Code Case to permit material manufacturers
to weld repair austenitic forgings without resolution heat treatment should provide
justification to the NRC staff (via the safety analysis report) why this is acceptable for
their applications, including their evaluation of the susceptibility for stress corrosion
cracking.
N-391

Procedure for Evaluation of the Design of Hollow Circular Cross Section Welded
Attachments on Class 1 Piping, Section III, Division 1

7/24/89

N-391-1

Procedure for Evaluation of the Design of Hollow Circular Cross Section Welded
Attachments on Class 1 Piping, Section III, Division 1

8/24/95

The following typographical errors need to be corrected:
(1) In equation (3) the + sign should be changed to an = sign, and
(2) In equation (4) the first + sign should be changed to an = sign.
N-392

Procedure for Evaluation of the Design of Hollow Circular Cross Section Welded
Attachments on Classes 2 and 3 Piping, Section III, Division 1

12/11/89

N-392-1

Procedure for Evaluation of the Design of Hollow Circular Cross Section Welded

12/11/92

DG-1230, Page 42

Code Case
Number

Table 5
Code Cases That Have Been Superseded by Revised
Code Cases on or After July 1, 1974

Revision
Date

Attachments on Classes 2 and 3 Piping, Section III, Division 1
Applicants should identify in their safety analysis report:
(1) the method of lug attachment,
(2) the piping system involved, and
(3) the location in the system where the Code Case is to be applied.
N-392-2

Procedure for Evaluation of the Design of Hollow Circular Cross Section Welded
Attachments on Classes 2 and 3 Piping, Section III, Division 1

12/12/94

Applicants should identify in their safety analysis report:
(1) the method of lug attachment,
(2) the piping system involved, and
(3) the location in the system where the Code Case is to be applied.
N-411

Alternative Damping Values for Seismic Analysis of Classes 1, 2, and 3 Piping Sections,
Section III, Division 1
(1)

(2)

(3)
(4)
(5)

2/20/86

The damping values specified may be used in analyzing piping response for
seismic and other dynamic loads being filtered through building structures
provided response mode frequencies are limited to 33 Hz and below. Within this
range, the Code Case damping should be used completely and consistently, if used
at all. [For equipment other than piping, the damping values specified in
Regulatory Guide 1.61 (Ref. 7), should be used.]
The damping values specified may be used only in those analyses in which current
seismic spectra and procedures have been employed. Such use should be limited
only to response spectral analyses [similar to that used in the study supporting its
acceptance, NUREG/CR-3526 (Ref. 9)]. The acceptance of the use with other
types of dynamic analyses (e.g., time-history analysis) is pending further
justification.
When used for reconciliation work or for support optimization of existing designs,
the effects of increased motion on existing clearances and on line mounted
equipment should be checked.
This Code Case is not appropriate for analyzing the dynamic response of piping
systems using supports designed to dissipate energy by yielding (i.e., the design of
which is covered by Code Case N-420).
This Code Case is not applicable to piping in which stress corrosion cracking has
occurred unless a case-specific evaluation is made and is reviewed by the NRC
staff.

N-418

Use of Seamless Ni-Fe-Cr-Mo-Cu Low Carbon (UNS N08028 and UNS N08904)
Tubing, Section III, Division 1, Classes 2 and 3

N-438
N-438-1
N-438-2

Fe-24.5Ni-21Cr-6.5 Mo-0.2N (Alloy UNS N08367) Seamless and Welded Pipe, Tube,
Plate, Bar, Fittings, and Forgings, Class 2 and 3 Construction, Section III, Division 1

N-438-3

UNS N08367 Material, Section III, Division 1, Class 2 and 3 Construction

DG-1230, Page 43

7/30/86
3/08/89
Reinstated on
5/24/96
7/27/92
5/24/96

Code Case
Number

Table 5
Code Cases That Have Been Superseded by Revised
Code Cases on or After July 1, 1974

Revision
Date

N-439

Use of 20Cr-18Ni-6Mo (Alloy UNS S31254) Forgings, Plate, Seamless and Welded
Pipe, and Welded Tube, Class 2 and 3 Construction, Section III,
Division 1

7/10/00

N-440

Use of 20Cr-18Ni-6Mo (Alloy UNS J93254) Castings, Class 2 and 3 Construction,
Section III, Division 1

7/10/00

N-441
N-441-1

Use of 20Cr-18Ni-6Mo (Alloy UNS S31254) Fittings, Class 2 and 3 Construction,
Section III, Division 1

11/25/92
7/10/00

N-443
N-443-1

High Yield Strength Cr-Mo Steel, Class 1 Components, Section III, Division 1

3/08/89
11/11/99

N-453

Nickel-Chromium-Molybdenum-Copper Stainless Steel (UNS N08925) Welded Pipe for
Class 2 and 3 Construction, Section III, Division 1

11/30/88

N-453-1

Nickel-Chromium-Molybdenum-Copper Stainless Steel (UNS N08925) Seamless and
Welded Pipe for Class 2 and 3 Construction, Section III, Division 1

4/30/92

N-453-2

Nickel-Chromium-Molybdenum-Copper Stainless Steel (UNS N08925 and N08926)
Seamless and Welded Pipe for Class 2 and 3 Construction, Section III, Division 1

12/12/95

N-454

Nickel-Chromium-Molybdenum-Copper Stainless Steel (UNS N08925) Wrought Fittings
for Class 2 and 3 Construction, Section III, Division 1

4/30/92

N-455

Nickel-Chromium-Molybdenum-Copper Stainless Steel (UNS N08925) Forged Flanges
and Fittings for Class 2 and 3 Construction, Section III, Division 1

4/30/92

N-466

Modified 9Cr-1Mo Material, Section III, Division 1, Classes 1, 2, and 3

4/30/90

N-469

Martensitic Stainless Steel for Class 1, 2, and 3 Components, Section III, Division 1

6/14/00

N-474

Design Stress Intensities and Yield Strength Values for Alloy 690 With a Minimum Yield
Strength of 35 ksi, Class 1 Components, Section III, Division 1

3/05/90

N-474-1

Design Stress Intensities and Yield Strength Values for UNS N06690 With a Minimum
Specified Yield Strength of 35 ksi, Class 1 Components, Section III, Division 1

12/09/93

N-484

Real Time Radioscopic Examination of Welds, Section III, Division 1

12/16/91

N-492

Grade 9 Titanium Alloy Tubing, Section III, Division 1, Class 1, 2, and 3

5/11/94

N-497

Use of Fe-Ni-Cr-Mo-N (C-N-3MN) Cast Materials, Section III, Division 1,
Class 2 and 3 Construction

12/09/93

N-510

Borated Stainless Steel for Class CS Core Support Structures and Class 1 Components,
Section III, Division 1

12/12/94

N-520
N-520-1

Alternative Rules for Renewal of N-type Certificates for Plants Not in Active
Construction, Section III, Division 1

10/26/94
5/09/03

N-564
N-564-1

UNS J93380, Alloy CD3MWCuN, Class 2 and 3 Construction, Section III, Division 1

7/30/98
12/31/96

N-570
N-570-1

Alternative Rules for Linear Piping and Linear Standard Supports for Classes 1, 2, 3,
and MC, Section, III, Division 1

3/28/06
1/05/06

N-580
N-580-1

Use of Alloy 600 With Columbium Added, Section III, Division 1

5/26/97
5/20/98

DG-1230, Page 44

Code Case
Number

Table 5
Code Cases That Have Been Superseded by Revised
Code Cases on or After July 1, 1974

Revision
Date

N-621

Ni-Cr-Mo Alloy (UNS N06022) Welded Construction to 800°F, Section III, Division 1

11/02/04

N-625

Ni-Cr-Mo Alloy (UNS N06059) Welded Construction to 800°F, Section III, Division 1

3/28/01

N-644

Weld Procedure Qualification for Procedures Exempt from PWHT in
Class 1, 2, and 3 Construction, Section III, Division 1

N-655

Use of SA-738, Grade B, for Metal Containment Vessels, Class MC, Section III,
Division 1

Reinstated
2/14/03
2/25/02

For metal containment vessels up to 1.75 inch thick:
(1) Supplementary Requirement S17, “Vacuum Carbon-Deoxidized Steel,” of Material
Specification SA-738 must be applied to the material, and
(2) Supplementary Requirement S20, “Maximum Carbon Equivalent for Weldability,”
of Material Specification SA-738 must be applied to the material.
N-757

Alternative Rules for Acceptability for Class 2 and 3 Valves (DN 25) and Smaller with
Welded and Nonwelded End Connections Other than Flanges, Section III, Division 1

1/21/07

N-759
N-759-1

Alternative Rules for Determining Allowable External Pressure and Comprehensive
Stresses for Cylinders, Cones, Spheres, and Formed Heads, Class 1, 2, and 3,
Section III, Division 1

10/04/06
10/19/07

N-760
N-760-1

Welding of Valve Plugs to Valve Stem Retainers, Classes 1, 2, and 3, Section III,
Division 1

3/27/07
2/12/08

1335-9

Requirements for Bolting Materials

8/28/78

1337-9
1337-10

Special Type 403 Modified Forgings or Bars, Section III

4/28/75
5/15/78

1395-3

SA-508, Class 2 Forgings with Modified Manganese Content, Section III or
Section VIII, Division 2

1/08/79

1407-2

Time of Examination for Class 1, 2, and 3, Section III Vessels

7/01/74

1414-3
1414-4

High Yield Strength Cr-Mo Steel for Section III, Division 1, Class 1 Vessels

3/1/76
8/9/77

The information required to be developed by Note 1 in the Code Case should be
provided in each referencing safety analysis report.

1484-1

SB-163 Nickel-Chromium-Iron Tubing (Alloy 600) at a Specified Minimum Yield
Strength of 40.0 ksi, Section III, Class 1

11/04/74

1484-2

SB-163 Nickel-Chromium-Iron Tubing (Alloy 600 and 690) at a Specified Minimum
Yield Strength of 40.0 ksi, Section III, Class 1

8/13/76

1492

Post Weld Heat Treatment, Section I, III and VIII, Division 1 and 2

3/03/75

1508

Allowable Stresses, Design Intensity and/or Yield Strength Values, Section I, III, and
VIII, Divisions 1 and 2

6/30/75

1516-1

Welding of Seats in Valves for Section III Applications

8/11/75

1540-1

Elastomer Diaphragm Valves, Section III, Classes 2 and 3

1/14/77

DG-1230, Page 45

Code Case
Number

Table 5
Code Cases That Have Been Superseded by Revised
Code Cases on or After July 1, 1974

Revision
Date

1541-1

Hydrostatic Testing of Embedded Class 2 and Class 3 Piping for Section III
Construction

9/30/76

1541-2

Hydrostatic Testing of Embedded Class 2 and Class 3 Piping for Section III, Division 1
Construction

5/15/78

1552

Design by Analysis of Section III, Class 1 Valves

8/29/77

1553

Upset Heading and Roll Threading of SA-453 for Bolting in Section III

3/03/75

1555

Certification of Safety Relief Valves on Liquids

1/14/77

1557-2

Steel Products Refined by Secondary Remelting

1/08/79

1606

Stress Criteria for Section III, Class 2 and 3 Piping Subjected to Upset, Emergency, and
Faulted Operating Conditions

12/16/74

Code Case 1606 was acceptable subject to the interpretation that the stress limit
designations of “Upset,” “Emergency,” and “Faulted” do not necessarily imply
agreement with specified plant conditions applicable to ASME Code Class 2 and 3
components for fluid systems. These designations should be established and justified in
the design specifications.
1607

Stress Criteria for Section III, Classes 2 and 3 Vessels Subjected to Upset, Emergency,
and Faulted Operating Conditions

11/04/74

Code Case 1607 was acceptable subject to the interpretation that the stress limit
designations of “Upset,” “Emergency,” and “Faulted” do not necessarily imply
agreement with specified plant conditions applicable to ASME Code Class 2 and 3
components for fluid systems. These designations should be established and justified in
the design specifications.
1618

Material for Core Support Structures, Section III, Subsection NG
(a)
(b)

1618-1

3/03/75

Welding of age-hardenable alloy SA-453 Grade 660 and SA-637 Grade 688
should be performed when the material is in the solution-treated condition.
Use of alloy ASTM A-564 Grade 631 is not acceptable on a generic basis.

Material for Core Support Structures, Section III, Subsection NG

3/01/76

Welding of age-hardenable alloy SA-453 Grade 660 and SA-637 Grade 688 should be
performed when the material is in the solution-treated condition.
1626

Normalized and Tempered 1-1/4 Cr Low Alloy Steel Forgings,
Section I, Section III, and Section VIII, Division 1 and 2

1/08/79

1634
1634-1

Use of SB-359 for Section III, Class 3 Construction

8/12/74
8/13/76

1644
1644-1
1644-2
1644-3

Additional Materials for Component Supports, Section III, Subsection NF, Class 1, 2, 3,
and MC Construction

4/28/75
6/30/75
11/03/75
3/01/76

The maximum measured ultimate tensile strength of the component support material
should not exceed 170 ksi.

DG-1230, Page 46

Code Case
Number
1644-4
1644-5
1644-6

Table 5
Code Cases That Have Been Superseded by Revised
Code Cases on or After July 1, 1974
Additional Materials for Component Supports and Alternate Design Requirements for
Bolted Joints, Section III, Division 1, Subsection NF, Class 1, 2, 3, and MC
Construction

Revision
Date
8/13/76
3/03/77
11/21/77

The maximum measured ultimate tensile strength (UTS) of the component support
material should not exceed 170 ksi in view of the susceptibility of high-strength
materials to brittleness and stress corrosion cracking. Certain applications may exist
where a UTS value of up to 190 ksi could be considered acceptable for a material and,
under this condition, the Design Specification should specify impact testing for the
material. For these cases, it should be demonstrated by the applicant that
(1) the impact test results for the material meet code requirements, and
(2) the material is not subject to stress corrosion cracking by virtue of the fact that
(a)
a corrosive environment is not present and
(b)
the component that contains the material has essentially no residual
stresses or assembly stresses, and it does not experience frequent sustained
loads in service.
1682

Alternate Rules for Material Manufacturers and Suppliers, Section III, Subarticle
NA-3700

8/11/75

1683

Bolt Holes for Section III, Division 1, Class 1, 2, 3 and MC Component Supports

3/01/76

1689

Alternate PWHT Time and Temperature for SA-182 Grade F22, Section III, Class 1, 2, 3
and CS

9/10/76

The alternate postweld heat treatment should be prequalified along with the applicable
welding procedure in accordance with ASME Section IX.
1695

Brazing, Section III, Class 3

11/03/75

1701

Determination of Capacities of Vacuum Relief Valves, Section III, Class MC

3/20/78

1702

Flanged Valves Larger than 24 inches for Section III, Class 1, 2 and 3 Construction

7/11/77

1714

Postweld Heat Treatment of P-1 Material, Section III, Class MC

7/11/77

1720

Weld End Preparation for Section III, Division Construction

3/01/76

Weld end preparations other than those shown in Figures 1, 2, and 3 of the Code Case
are not acceptable on a generic basis. Such alternative end preparations should be
treated on a case-by-case basis.
1720-1

Weld End Preparation for Section III, Division Construction

11/20/78

The acceptance of weld end preparations other than those shown in Figures 1, 2, and 3
of the Code Case should be evaluated on a case-by-case basis.
1722

Vacuum, Carbon Deoxidized SA-508 Forgings, Section III, Division 1, and VIII,
Division 1 and 2

1/08/79

1741

Interim Rules for the Required Number of Impact Tests for Rolled Shapes, Section III,
Division 1, Subsection NF, Component Supports

1/14/77

1755

Alternate Rules for Examination of Welds in Piping, Class 1 and 2 Construction, Section
III, Division 1

1/14/77

DG-1230, Page 47

Code Case
Number
1759

Table 5
Code Cases That Have Been Superseded by Revised
Code Cases on or After July 1, 1974
Material for Internal Pressure Retaining Items for Pressure Relief Valves, Section III,
Division 1, Class 1, 2, and 3

Revision
Date
5/15/78

Applicants using this Case should also use Code Case 1711 for the design of pressure
relief valves.
1761

Use of SG-148 Alloy CA954 for Section III, Division 1, Class 2 or 3 Flanged End Valves

1/14/77

1769

Qualification of NDE Level III Personnel, Section III, Division 1

2/16/77

1774

Minimum Wall Thickness for Class 2 and 3 Valves, Section III, Division 1

7/11/77

1780

Hydrostatic Testing and Stamping of Pumps for Class 1 Construction,
Section III, Division 1

3/10/78

Each licensing application in which the Code Case is to be used should present
information that satisfactorily demonstrates that the subassembly tests adequately
simulate the pressure loadings. Also, the closure fixture for the test subassembly should
adequately simulate the rigidity of adjacent subassemblies and also simulate
the interface loadings from adjacent subassemblies that would result from a hydrostatic
pressure test of a complete pump assembly. As a minimum, the closure fixture should
impose loads that result in stresses equal to or greater than those induced during the
hydrostatic test of a complete pump assembly. It is not intended that piping reactor
loadings be simulated in the hydrostatic testing
1783

Qualification of Nondestructive Personnel, Section III, Division 1
The first sentence of paragraph (1) should be replaced with the following: “The
certification of the Level III nondestructive examination personnel for the purposes of
this Section of the Code shall be the responsibility of the employer of the Level III
individual. If the employer is not a Certificate Holder, then the verification of such
certificate is the responsibility of the Certificate Holder.”

DG-1230, Page 48

1/14/77

D. IMPLEMENTATION
The purpose of this section is to provide information to applicants and licensees regarding the NRC
staff’s plans for using this regulatory guide. The requirements addressing implementation of Section III
Code Cases are contained in 10 CFR 50.55a(b)(4). No backfit is intended or approved in connection with
the issuance of this guide.

REGULATORY ANALYSIS
A separate regulatory analysis was not prepared for this regulatory guide. The regulatory basis for
this guide is the regulatory analysis prepared for the amendment to 10 CFR 50.55a, “Codes and
Standards.” The amendment to 10 CFR 50.55a incorporates this regulatory guide by reference.

DG-1230, Page 49

REFERENCES2
1.

Code of Federal Regulations, Title 10, Energy, Part 50, “Domestic Licensing of Production and
Utilization Facilities” (10 CFR Part 50), U.S. Nuclear Regulatory Commission, Washington, DC.

2.

ASME Boiler and Pressure Vessel Code, Section III, “Rules for Construction of Nuclear Power Plant
Components,” Division I, American Society of Mechanical Engineers, New York, NY.3

3.

Paperwork Reduction Act of 1995 (Public Law 104-13), United States Code, Title 44,
“Public Printing and Documents,” Chapter 35, “Coordination of Federal Information Policy”
(44 U.S.C. 3501 et seq.), 104th Congress of the United States of America, Washington, DC.4

4.

Regulatory Guide 1.193, “ASME Code Cases Not Approved for Use,” U.S. Nuclear Regulatory
Commission, Washington, DC.

5.

ASTM A 262-70, “Standard Practices for Detecting Susceptibility to Intergranular Attack in
Austenitic Stainless Steels,” American Society for Testing and Materials, West Conshohocken, PA.5

6.

ASTM A 708-74, “Practice for Detection of Susceptibility to Intergranular Corrosion in Severely
Sensitized Austenitic Stainless Steels,” American Society for Testing and Materials,
West Conshohocken, PA.5

7.

Regulatory Guide 1.122, “Development of Floor Design Response Spectra for Seismic Design of
Floor-Supported Equipment or Components,” U.S. Nuclear Regulatory Commission, Washington,
DC.

8.

Regulatory Guide 1.61, “Damping Values for Seismic Design of Nuclear Power Plants,” U.S.
Nuclear Regulatory Commission, Washington, DC.

9.

NUREG/CR-3526, “Impact of Changes in Damping and Spectrum Peak Broadening on the Seismic
Response of Piping Systems,” U.S. Nuclear Regulatory Commission, Washington, DC.

2

Publicly available NRC published documents are available electronically through the NRC Library on the NRC’s public
Web site at: http://www.nrc.gov/reading-rm/doc-collections/. The documents can also be viewed on-line or printed for a
fee in the NRC’s Public Document Room (PDR) at 11555 Rockville Pike, Rockville, MD; the mailing address is
USNRC PDR, Washington, DC 20555; telephone 301-415-4737 or (800) 397-4209; fax (301) 415-3548; and e-mail
pdr.resource@nrc.gov.

3

Copies may be purchased from the American Society of Mechanical Engineers, Three Park Avenue, New York, NY
10016-5990; phone (212) 591-8500; fax (212) 591-8501; www.asme.org.

4

The Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.) is available electronically through the Federal Register
Web site administered by the U.S. National Archives and Records Administration, at http://www.archives.gov/ federalregister/laws/paperwork-reduction/

5

Copies of ASTM standards may be purchased from the American Society for Testing and Materials, 100 Barr Harbor
Drive, P.O. Box C700, West Conshohocken, Pennsylvania 19428-2959; phone (610) 832-9585. Purchase information
is available through the ASTM Web site at http://www.astm.org.

DG-1230, Page 50

10.

Regulatory Guide 1.31, “Control of Ferrite Content in Stainless Steel Weld Metal,” U.S. Nuclear
Regulatory Commission, Washington, DC.

11.

Regulatory Guide 1.44, “Control of the Use of Sensitized Stainless Steel,” U.S. Nuclear Regulatory
Commission, Washington, DC.

12.

Regulatory Guide 1.67, “Installation of Over-Pressure Protection Devices,” U.S. Nuclear Regulatory
Commission, Washington, DC.

13.

NUREG-0800, “Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power
Plants (LWR Edition),” Section 9.5.1, “Fire Protection System,” U.S. Nuclear Regulatory
Commission, Washington, DC.

14.

The Congressional Review Act, a part of the Small Business Regulatory Enforcement Fairness Act
of 1996, is available through the Federal Register Web site administered by the U.S. National
Archives and Records Administration, at http://www.archives.gov/federalregister/laws/congressional-review/

DG-1230, Page 51

APPENDIX A
SUPPLEMENTS ADDRESSED IN REVISION 36
OF REGULATORY GUIDE 1.84

1
2
3
4

Edition

Supplement Number

BNCS1 Approval Date of Code Cases in Supplement2

2007

1

March 22, 2007

2007

2

October 19, 2007

2007

3

October 19, 20073

2007

4

January 4, 2008

2007

5

February 12, 2008

2007

6

June 9, 2008

2007

7

November 10, 2008

2007

8

January 26, 2009

2007

9

April 27, 2009

2007

10

May 15, 20094

BNCS = ASME Board on Nuclear Codes and Standards
Publication of supplements approximately 6 months after BNCS approval.
No nuclear Code Cases were published in Supplement 3 to the 2007 Edition.
Only errata published in Supplement 10 to the 2007 Edition.

Appendix A to DG-1230, Page A-1

APPENDIX B
NUMERICAL LISTING OF SECTION III CODE CASES IN
SUPPLEMENT 1 THROUGH SUPPLEMENT 10 TO THE 2007 EDITION1
N-4-13
N-208-2
N-520-2
N-570-2
N-580-2
N-655-1
N-659-22
N-708
N-7212
N-7552
N-757
N-757-1
N-759-1
N-759-2
N-760
N-760-1
N-760-2
N-767
N-774
N-782

______________________
1
2

Except for those Code Cases pertaining to high temperature gas-cooled reactors; certain requirements pertaining to
Section III, Division 2; Section III, Division 3, and liquid-metal.
Code Case is not acceptable for use; see Rev. 4 of Regulatory Guide 1.193 (Ref. 4).

Appendix B to DG-1230, Page B-1

APPENDIX C
NUMERICAL LISTING OF SECTION III CODE CASES
AND TABLE WHERE EACH CODE CASE IS LISTED
Legend for footnotes
1 Except for those Code Cases pertaining to: high temperature gas-cooled reactors; certain
requirements pertaining to Section III, Division 2; Section III, Division 3; and liquid-metal.
2

Code Case is not acceptable for use; see Rev. 4 of Regulatory Guide 1.193 (Ref. 4).

3

Code Cases N-801 and N-802 were published by ASME in Supplement 4 to the 2010 Edition. The
NRC is proposing to include these two Code Cases in this draft regulatory guide because the Code
Cases are urgently needed to support new reactor construction.

N-1-7 [T3]
N-2 [T3]
N-3-10 [T3]
N-4-11 [T5]
N-4-12 [T5]
N-4-13 [T1]
N-5 [T5]
N-5-1 [T3]
N-6 [T3]
N-7 [T5]
N-7-1 [T1]
N-9-4 [T3]
N-10 [T3]
N-11-5 [T4]
N-15 [T3]
N-17 [T3]
N-20 [T5]
N-20-1 [T5]
N-20-2 [T5]
N-20-3 [T5]
N-20-4 [T3]
N-22 [T3]
N-24 [T3]
N-26 [T3]
N-30-1 [T3]
N-31 [T5]
N-31-1 [T4]
N-32-3 [T3]
N-32-4 [T4]
N-33 [T3]
N-35-1 [T3]
N-37-3 [T3]

N-41 [T3]
N-71-12 [T5]
N-43 [T3]
N-71-13 [T5]
N-46 [T3]
N-71-14 [T5]
N-47-33 [T3]
N-71-15 [T5]
N-48-2 [T3]
N-71-16 [T5]
N-49-4 [T3]
N-71-17 [T5]
N-50-1 [T3]
N-71-18 [T2]
N-51-2 [T3]
N-77 [T3]
N-55 [T5]
N-81 [T3]
N-55-1 [T3]
N-82 [T3]
N-56 [T3]
N-84 [T3]
N-60 [T5]
N-90 [T3]
N-60-1 [T5]
N-92 [T4]
N-60-2 [T5]
N-94 [T3]
N-60-3 [T5]
N-95-1 [T5]
N-60-4 [T5]
N-95-2 [T3]
N-60-5 [T2]
N-96-1 [T3]
N-61 [T3]
N-100 [T4]
N-62-2 [T5]
N-101 [T3]
N-62-3 [T5]
N-102-1 [T5]
N-62-4 [T5]
N-102-2 [T3]
N-62-5 [T5]
N-106-2 [T4]
N-62-6 [T5]
N-107-1 [T3]
N-62-7 [T2]
N-108 [T3]
N-65-1 [T3]
N-109 [T3]
N-66-1 [T3]
N-110 [T4]
N-68 [T3]
N-111 [T3]
N-71-7 [T5]
N-114 [T3]
N-71-8 [T5]
N-115 [T3]
N-71-9 [T5]
N-116 [T4]
N-71-10 [T5]
N-119-2 [T5]
N-71-11 [T5]
N-119-3 [T5]
Appendix C to DG-1230, Page C-1

N-119-4 [T5]
N-119-5 [T5]
N-119-6 [T3]
N-121 [T3]
N-122 [T5]
N-122-2 [T1]
N-123 [T3]
N-124 [T3]
N-125 [T3]
N-126 [T3]
N-127 [T3]
N-131-1 [T1]
N-133 [T5]
N-133-1 [T5]
N-133-2 [T5]
N-133-3 [T1]
N-139 [T3]
N-140 [T3]
N-142-1 [T3]
N-146-1 [T4]
N-147 [T3]
N-148 [T3]
N-154 [T5]
N-154-1 [T1]
N-155-2 [T2]
N-156 [T3]
N-157 [T3]
N-158 [T3]
N-159 [T3]
N-160 [T5]
N-160-1 [T1]
N-171 [T1]

N-174 [T3]
N-175 [T4]
N-176-1 [T3]
N-177 [T3]
N-178 [T3]
N-179 [T3]
N-180 [T3]
N-181 [T3]
N-182 [T3]
N-183 [T3]
N-184 [T3]
N-188 [T5]
N-188-1 [T3]
N-189 [T3]
N-190 [T3]
N-192 [T5]
N-192-1 [T5]
N-192-2 [T5]
N-192-3 [T1]
N-193 [T3]
N-196 [T5]
N-196-1 [T3]
N-199 [T4]
N-204 [T3]
N-205 [T1]
N-206 [T3]
N-207 [T5]
N-207-1 [T3]
N-208-1 [T5]
N-208-2 [T2]
N-212 [T3]
N-213 [T1]
N-214 [T5]
N-214-1 [T5]
N-214-2 [T3]
N-215 [T3]
N-217-1 [T3]
N-220 [T3]
N-223 [T3]
N-224 [T5]
N-224-1 [T3]
N-225 [T3]
N-226 [T3]
N-227 [T3]
N-228 [T3]
N-229 [T3]
N-231 [T3]
N-233 [T3]

N-237 [T5]
N-237-1 [T5]
N-237-2 [T3]
N-238 [T4]
N-240 [T3]
N-241 [T3]
N-242 [T5]
N-242-1 [T4]
N-243 [T1]
N-245 [T3]
N-246 [T5]
N-246-1 [T5]
N-246-2 [T3]
N-247 [T3]
N-248 [T3]
N-249 [T5]
N-249-1 [T5]
N-249-2 [T5]
N-249-3 [T5]
N-249-4 [T5]
N-249-5 [T5]
N-249-6 [T5]
N-249-7 [T5]
N-249-8 [T5]
N-249-9 [T5]
N-249-10 [T5]
N-249-11 [T5]
N-249-12 [T5]
N-249-13 [T5]
N-249-14 [T2]
N-252 [T4]
N-259 [T3]
N-260 [T5]
N-260-1 [T5]
N-260-2 [T4]
N-261 [T3]
N-262 [T3]
N-263 [T4]
N-265 [T5]
N-265-1 [T3]
N-267 [T3]
N-271 [T3]
N-272 [T3]
N-274 [T4]
N-275 [T4]
N-276 [T3]
N-277 [T3]
N-279 [T4]

N-280 [T3]
N-281 [T3]
N-282 [T3]
N-284-12
N-284-2 [T1]
N-292 [T4]
N-294 [T3]
N-295 [T3]
N-296 [T3]
N-298 [T3]
N-299 [T5]
N-299-1 [T3]
N-300 [T3]
N-302 [T3]
N-304 [T5]
N-304-1 [T5]
N-304-2 [T5]
N-304-3 [T5]
N-304-4 [T3]
N-309 [T5]
N-309-1 [T3]
N-310-1 [T4]
N-313 [T3]
N-314 [T4]
N-315 [T1]
N-316 [T3]
N-317 [T3]
N-318 [T5]
N-318-1 [T5]
N-318-2 [T5]
N-318-3 [T5]
N-318-4 [T5]
N-318-5 [T1]
N-319 [T5]
N-319-1 [T5]
N-319-2 [T5]
N-319-3 [T1]
N-320 [T3]
N-321 [T5]
N-321-1 [T3]
N-324 [T3]
N-328 [T3]
N-329 [T1]
N-336 [T3]
N-337 [T5]
N-337-1 [T3]
N-339 [T3]
N-341 [T3]

Appendix C to DG-1230, Page C-2

N-342 [T3]
N-345 [T5]
N-345-1 [T3]
N-346 [T3]
N-347 [T3]
N-348 [T4]
N-348-1 [T4]
N-348-2 [T4]
N-349 [T3]
N-350 [T4]
N-351 [T1]
N-352 [T5]
N-352-1 [T3]
N-353 [T3]
N-354-1 [T3]
N-355 [T3]
N-357 [T3]
N-359 [T3]
N-362 [T5]
N-362-1 [T5]
N-362-2 [T3]
N-367 [T3]
N-368 [T3]
N-369 [T1]
N-370 [T5]
N-370-1 [T5]
N-370-2 [T3]
N-371 [T5]
N-371-1 [T3]
N-372 [T3]
N-373-1 [T5]
N-373-2 [T5]
N-373-3 [T1]
N-376 [T3]
N-377 [T3]
N-378 [T3]
N-379 [T5]
N-379-1 [T3]
N-383 [T5]
N-383-1 [T4]
N-384-1 [T3]
N-387 [T3]
N-388 [T3]
N-391 [T5]
N-391-1 [T5]
N-391-2 [T1]
N-392 [T5]
N-392-1 [T5]

N-392-2 [T5]
N-392-3 [T1]
N-393 [T3]
N-394 [T3]
N-395 [T3]
N-397 [T4]
N-398 [T4]
N-403 [T3]
N-404 [T4]
N-405-1 [T1]
N-410 [T3]
N-411 [T5]
N-411-1 [T4]
N-412 [T3]
N-413 [T3]
N-414 [T3]
N-418 [T5]
N-418-1 [T3]
N-420 [T3]
N-421 [T3]
N-430 [T4]
N-433 [T3]
N-438 [T5]
N-438-1 [T1][T5]
N-438-2 [T5]
N-438-3 [T5]
N-438-4 [T3]
N-439 [T5]
N-439-1 [T3]
N-440 [T5]
N-440-1 [T3]
N-441 [T5]
N-441-1 [T5]
N-441-2 [T3]
N-442 [T3]
N-443 [T5]
N-443-1 [T5]
N-443-2 [T3]
N-451 [T3]
N-452 [T1]
N-453 [T5]
N-453-1 [T5]
N-453-2 [T5]
N-453-3 [T1]
N-454 [T5]
N-454-1 [T1]
N-455 [T5]
N-455-1 [T1]

N-459 [T3]
N-462 [T3]
N-464 [T3]
N-466 [T5]
N-466-1 [T3]
N-468 [T3]
N-469 [T5]
N-469-1 [T1]
N-470 [T3]
N-474 [T5]
N-474-1 [T5]
N-474-2 [T3]
N-475 [T3]
N-476 [T3]
N-482 [T3]
N-483-22
N-483-32
N-484 [T5]
N-484-1 [T3]
N-492 [T5]
N-492-1 [T3]
N-493 [T1]
N-497 [T5]
N-497-1 [T3]
N-500-2 [T1]
N-500-1 [T2]
N-500-2 [T1]
N-501 [T3]
N-502 [T3]
N-505 [T1]
N-507 [T3]
N-510 [T5]
N-5102
N-510-12
N-511 [T1]
N-5192 [T3]
N-520 [T5]
N-520-1 [T5]
N-520-2 [T2]
N-525 [T1]
N-5302
N-539 [T1]
N-540 [T3]
N-548 [T1]
N-549 [T3]
N-550 [T3]
N-551 [T3]
N-558 [T1]

N-559 [T3]
N-564 [T5]
N-564-1 [T5]
N-564-2 [T1]
N-5652
N-570 [T5]
N-570-1 [T5]
N-570-2 [T1]
N-572 [T1]
N-579 [T1]
N-580 [T5]
N-580-1 [T5]
N-580-2 [T1]
N-594 [T1]
N-5952
N-595-12
N-595-22
N-595-3 [T2]
N-595-42
N-596 [T3]
N-607 [T1]
N-608 [T3]
N-610 [T1]
N-611 [T1]
N-620 [T1]
N-621 [T5]
N-621-1 [T1]
N-625 [T5]
N-625-1 [T1]
N-626 [T2]
N-631 [T1]
N-632 [T1]
N-634
N-635 [T5]
N-635-1 [T1]
N-636 [T1]
N-637 [T1]
N-642 [T1]
N-644 [T5]
N-644-1 [T1]
N-6452
N-645-12
N-646 [T1]
N-650 [T1]
N-655 [T5]
N-655-1 [T1]
N-656 [T2]
N-657 [T1]

Appendix C to DG-1230, Page C-3

N-6592
N-659-12
N-659-22
N-6732
N-692 [T1]
N-6932
N-698 [T1]
N-699 [T1]
N-703 [T1]
N-7072
N-708 [T1]
N-710 [T1]
N-7212
N-725 [T1]
N-727 [T1]
N-7282
N-732 [T1]
N-736 [T1]
N-738 [T1]
N-741 [T1]
N-744 [T1]
N-746 [T1]
N-7552
N-756 [T1]
N-757 [T5]
N-757-1 [T2]
N-759 [T5]
N-759-1 [T5]
N-759-2 [T1]
N-760 [T5]
N-760-1 [T5]
N-760-2 [T1]
N-767 [T1]
N-774 [T1]
N-782 [T1]
N-8013 [T1]
N-8023 [T1]
1141-7 [T3]
1332-6 [T5]
1335-9 [T5]
1337-9 [T5]
1337-10 [T5]
1361-2 [T4]
1395-3 [T5]
1407-2 [T5]
1412-4 [T4]
1414-3 [T5]
1414-4 [T5]

1423-2 [T4]
1434-1 [T3]
1461-1 [T3]
1470-2 [T3]
1471-1 [T3]
1475-1 [T3]
1477-1 [T3]
1484-1 [T5]
1484-2 [T5]
1492 [T5]
1494-1 [T3]
1506 [T3]
1508 [T5]
1515 [T3]
1516-1 [T5]
1521-1 [T4]
1528-3 [T4]
1529 [T3]
1531 [T3]
1532 [T3]
1533 [T3]
1535-2 [T3]
1536 [T3]
1540-1 [T5]
1541-1 [T5]
1541-2 [T5]
1552 [T5]
1553 [T5]
1553-1 [T3]
1555 [T5]
1555-1 [T3]
1557-2 [T5]
1567 [T3]
1568 [T3]
1569 [T4]
1573 [T3]
1574 [T3]
1580-1 [T3]
1581 [T3]
1583 [T3]
1587 [T3]
1590 [T3]
1601 [T3]
1602-1 [T3]
1603 [T3]
1605 [T3]
1606 [T5]
1606-1 [T4]

1607 [T5]
1607-1 [T4]
1608-1 [T3]
1613 [T3]
1614 [T3]
1615 [T3]
1616 [T3]
1618 [T5]
1618-1 [T5]
1622 [T3]
1623 [T3]
1625 [T3]
1626 [T5]
1633 [T3]
1634 [T5]
1634-1 [T5]
1635-1 [T4]
1636-1 [T4]
1637 [T3]
1644 [T5]
1644-1 [T5]
1644-2 [T5]
1644-3 [T5]
1644-4 [T5]
1644-5 [T5]
1644-6 [T5]
1645 [T3]
1648 [T3]
1649 [T3]
1650 [T3]
1651 [T3]
1657 [T3]
1659 [T3]
1661 [T3]
1662 [T3]
1664 [T3]
1666 [T3]
1672 [T3]
1675 [T3]
1676 [T3]
1678 [T3]
1682 [T5]
1682-1 [T3]
1683 [T5]
1683-1 [T3]
1684 [T3]
1685 [T3]
1686 [T3]

1689 [T5]
1689-1 [T4]
1690 [T3]
1691 [T3]
1695 [T5]
1701 [T5]
1702 [T5]
1703 [T3]
1706 [T3]
1713 [T3]
1714 [T5]
1718 [T3]
1719 [T3]
1720 [T5]
1720-1 [T5]
1722 [T5]
1728 [T3]
1740 [T3]
1741 [T5]
1741-1 [T3]
1742 [T3]
1743 [T3]
1755 [T5]
1759 [T5]
1760 [T3]
1761 [T5]
1765 [T3]
1766 [T3]
1767 [T3]
1768 [T3]
1769 [T5]
1769-1 [T3]
1773 [T3]
1774 [T5]
1775 [T3]
1777 [T3]
1780 [T5]
1783 [T5]
1783-1 [T4]
1787 [T3]
1798 [T3]
1808 [T3]
1810 [T3]
1819 [T3]

Appendix C to DG-1230, Page C-4