DOE/NRC Form 742, Material Balance Report and NUREG/BR-0007, Revision 8, Instructions for the Preparation and Distribution of Material Status Reports (DOE/NRC Forms 742 and 742C)

DOE/NRC Form 742, Material Balance Report, and NUREG/BR-0007, Revision 8, "Instructions for the Preparation and Distribution of Material Status Reports (DOE/NRC Forms 742 and 742C)"

NUREG-BR-0007, Revision 8, Instructions for the Preparation and Distribution of Material Status Reports (DOE-NRC Forms 742 and 7

DOE/NRC Form 742, Material Balance Report and NUREG/BR-0007, Revision 8, Instructions for the Preparation and Distribution of Material Status Reports (DOE/NRC Forms 742 and 742C)

OMB: 3150-0004

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NUREG/BR-0007
Revision 8

Instructions for the
Preparation and
Distribution of
Material Status
Reports
(DOE/NRC Forms 742 and 742C)

Final Report

Office of Nuclear Material Safety and Safeguards

AVAILABILITY OF REFERENCE MATERIALS
IN NRC PUBLICATIONS
NRC Reference Material

Non-NRC Reference Material

As of November 1999, you may electronically access
NUREG-series publications and other NRC records at
the NRC’s Public Electronic Reading Room at
http://www.nrc.gov/reading-rm.html. Publicly released
records include, to name a few, NUREG-series
publications; Federal Register notices; applicant,
licensee, and vendor documents and correspondence;
NRC correspondence and internal memoranda; bulletins
and information notices; inspection and investigative
reports; licensee event reports; and Commission papers
and their attachments.

Documents available from public and special technical
libraries include all open literature items, such as books,
journal articles, transactions, Federal Register notices,
Federal and State legislation, and congressional reports.
Such documents as theses, dissertations, foreign reports
and translations, and non-NRC conference proceedings
may be purchased from their sponsoring organization.

NRC publications in the NUREG series, NRC
regulations, and Title 10, “Energy,” in the Code of
Federal Regulations may also be purchased from one
of these two sources.
1. The Superintendent of Documents
U.S. Government Publishing Office
Washington, DC 20402-0001
Internet: http://bookstore.gpo.gov
Telephone: 1-866-512-1800
Fax: (202) 512-2104
2. The National Technical Information Service
5301 Shawnee Road
Alexandria, VA 22161-0002
http://www.ntis.gov
1-800-553-6847 or, locally, (703) 605-6000
A single copy of each NRC draft report for comment is
available free, to the extent of supply, upon written
request as follows:
U.S. Nuclear Regulatory Commission
Office of Administration
Multimedia, Graphics and Storage & Distribution Branch
Washington, DC 20555-0001
E-mail: distribution.resource@nrc.gov
Facsimile: (301) 415-2289
Some publications in the NUREG series that are
posted at the NRC’s Web site address
http://www.nrc.gov/reading-rm/doc-collections/nuregs
are updated periodically and may differ from the last
printed version. Although references to material
found on a Web site bear the date the material was
accessed, the material available on the date cited
may subsequently be removed from the site.

SR-CR 10/2017

Copies of industry codes and standards used in a
substantive manner in the NRC regulatory process are
maintained at—
The NRC Technical Library
Two White Flint North
11545 Rockville Pike
Rockville, MD 20852-2738
These standards are available in the library for reference
use by the public. Codes and standards are usually
copyrighted and may be purchased from the originating
organization or, if they are American National Standards,
from—
American National Standards Institute
11 West 42nd Street
New York, NY 10036-8002
http://www.ansi.org
(212) 642-4900
Legally binding regulatory requirements are stated only
in laws; NRC regulations; licenses, including technical
specifications; or orders, not in NUREG-series
publications. The views expressed in contractorprepared publications in this series are not necessarily
those of the NRC.
The NUREG series comprises (1) technical and
administrative reports and books prepared by the staff
(NUREG-XXXX) or agency contractors
(NUREG/CR-XXXX), (2) proceedings of conferences
(NUREG/CP-XXXX), (3) reports resulting from
international agreements (NUREG/IA-XXXX), (4)
brochures (NUREG/BR-XXXX), and (5) compilations of
legal decisions and orders of the Commission and
Atomic and Safety Licensing Boards and of Directors’
decisions under Section 2.206 of NRC’s regulations
(NUREG-0750).
DISCLAIMER: This report was prepared as an account of
work sponsored by an agency of the U.S. Government.
Neither the U.S. Government nor any agency thereof, nor
any employee, makes any warranty, expressed or
implied, or assumes any legal liability or responsibility for
any third party’s use, or the results of such use, of any
information, apparatus, product, or process disclosed in
this publication, or represents that its use by such third
party would not infringe privately owned rights.

NUREG/BR-0007
Revision 8

Instructions for the
Preparation and
Distribution of
Material Status
Reports
(DOE/NRC Forms 742 and 742C)
Final Report
Manuscript Completed: August 2020
Date Published: August 2020

Prepared by:
Mirabelle Shoemaker

Office of Nuclear Material Safety and Safeguards

ABSTRACT
U.S. Nuclear Regulatory Commission (NRC) regulations require each licensee that is authorized
to possess special nuclear material or foreign obligated source material to prepare and submit,
in computer-readable format, reports concerning special nuclear material that it received,
produced, possessed, transferred, consumed, disposed of, or lost. This NUREG contains
instructions for preparing these forms.

Paperwork Reduction Act Statement
U.S. Department of Energy (DOE)/NRC Form 742, “Material Balance Report,” and DOE/NRC
Form 742C, “Physical Inventory Listing,” cover the information collections in NUREG/BR-0007.
The Office of Management and Budget (OMB) approved DOE/NRC Forms 742 and 742C under
approval numbers 3150-0004 and 3150-0058. The estimated burden per response to comply
with this mandatory collection request is 2 hours for small licensees and 5 hours for large
licensees to complete DOE/NRC Form 742 and 2 hours for small licensees and 6 hours for
large licensees to complete DOE/NRC Form 742C. The NRC requires the information to fulfill
its safeguards responsibilities, bilateral agreements, and responsibilities as a participant in the
U.S./International Atomic Energy Agency Safeguards Agreement. Send comments on burden
estimates to the Information Services Branch (T-6 A10M), U.S. Nuclear Regulatory
Commission, Washington, DC 20555-0001, or through e-mail to
Infocollects.Resource@nrc.gov, and to the Desk Officer, Office of Information and Regulatory
Affairs, NEOB-10202 (3150-0004, 3150-0058), Office of Management and Budget, Washington,
DC 20503.
Public Protection Notification
The NRC may not conduct or sponsor, and a person is not required to respond to, a collection
of information unless the document requesting or requiring the collection displays a currently
valid OMB control number.

iii

CONTENTS
ABSTRACT .................................................................................................................... iii
ACRONYMS AND ABBREVIATIONS ........................................................................... vii
1 INTRODUCTION ....................................................................................................... 1
1.1

Material Status Reports .............................................................................................. 1

1.2

Regulations ................................................................................................................. 2

1.3

Preparation and Submission of DOE/NRC Forms 742
and 742C in Computer-Readable Format ................................................................... 3

1.4

Documentation and Distribution .................................................................................. 4

1.5

Reconciliation .............................................................................................................. 4

2 INSTRUCTIONS FOR COMPLETING DOE/NRC FORM 742 REPORTS ................ 7
2.1

Section A, “Material Accountability”............................................................................. 8

2.2

Section B, “Foreign Obligations” ............................................................................... 13

2.3

Section C, “Certification” ........................................................................................... 13

3 INSTRUCTIONS FOR COMPLETING DOE/NRC FORM 742C .............................. 15
3.1

Licensees Reporting under 10 CFR 74.13 or 10 CFR 150.17 .................................. 15

3.2

Licensees Reporting under 10 CFR Part 75 ............................................................. 18

APPENDIX A

COMPOSITION CODE INSTRUCTIONS ...................................... A-1

APPENDIX B

DOE/NRC FORM 742, “MATERIAL BALANCE REPORT”
(BLANK), AND DOE/NRC FORM 742C, “PHYSICAL
INVENTORY LISTING” (BLANK) ................................................. B-1

APPENDIX C

FOREIGN OBLIGATION CODES ................................................. C-1

APPENDIX D

GLOSSARY ........................................................................................... D-1

APPENDIX E

ACRONYMS AND ABBREVIATIONS
A

addition to inventory

beginning inventory

CFR

Code of Federal Regulations

DOD
DOE

U.S. Department of Defense
U.S. Department of Energy

EI
EURATOM

ending inventory
European Atomic Energy Community

facility attachment

IAEA
ICT
I.D.
ID
IDC

International Atomic Energy Agency
inventory change type
identification
inventory difference
identification code

LES

Louisiana Energy Services

MBA

material balance area

NMIS
NMMSS
NRC

Nuclear Material Information System
Nuclear Materials Management and Safeguards System
U.S. Nuclear Regulatory Commission

OMB

Office of Management and Budget

plutonium

R
RIS

removal from inventory
reporting identification symbol

SAMS
SNM

Safeguards Management Software
special nuclear material

TFA

transitional facility attachment

uranium

vii

U.S. NUCLEAR REGULATORY COMMISSION
INSTRUCTIONS FOR THE PREPARATION AND DISTRIBUTION OF
MATERIAL STATUS REPORTS
U.S. DEPARTMENT OF ENERGY/U.S. NUCLEAR
REGULATORY COMMISSION FORMS 742 AND 742C
1 INTRODUCTION
The U.S. Nuclear Regulatory Commission (NRC) and the U.S. Department of Energy (DOE)
jointly sponsor the Nuclear Materials Management and Safeguards System (NMMSS). This
system is the U.S. Government’s national database used by the DOE and the NRC for tracking
certain nuclear material.
Common reporting forms and formats are used to minimize the reporting burden on licensees1
that are required to provide nuclear material data to one or both agencies in accordance with
current regulations or contractual obligations. In this manner, licensees can file one report to
meet the reporting requirements of both the NRC and DOE. The agency that requires the
specific data monitors compliance with specific reporting requirements. NRC regulations
require licensees to submit the reports in computer-readable form.
In addition to the physical inventory reporting requirements in Title 10 of the Code of Federal
Regulations (10 CFR) Part 74, “Material Control and Accounting of Special Nuclear Material,” as
discussed in Section 1.2, licensees may also be required to report to the NMMSS all receipts,
transfers, and inventory adjustments of DOE-owned, -loaned, or -leased material in their
possession that they obtained from the DOE. In such cases, licensees shall file DOE/NRC
Form 742, “Material Balance Report,” and DOE/NRC Form 742C, “Physical Inventory Listing,” to
report quantities of 0.5 or greater of the reporting unit specified in DOE Series 470 orders (DOE
Order 470.4, “Safeguards and Security Program,” and DOE Order 474.2, “Nuclear Material
Control and Accountability”).

1.1 Material Status Reports
DOE/NRC Forms 742 and 742C are the means for submitting reports of material balance and
physical inventory listing data to the NMMSS. The information must be completed in
accordance with the instructions in this NUREG and must be submitted in computer-readable
format. NMMSS Report D-24, “Personal Computer Data Input for Nuclear Regulatory
Commission Licensees,” dated January 1, 2012, provides the instructions for creating the
computer-readable submittal.
Licensees use DOE/NRC Form 742 to report a summary of activity for a specified material
within a material balance reporting period, as specified in 10 CFR 74.13, “Material Status
Reports.” The report conveys beginning and ending inventory balances; activities such as
shipments and receipts involving other facilities; and decay, transmutation, and production
1

The term “licensee” here denotes an NRC or Agreement State licensee or an NRC certificate holder or
possessor.

calculations. This information is useful for validating a facility’s ending book inventory.
Licensees that neither received nor transferred source or special nuclear material (SNM) within
a reporting period should still refer to instructions in NUREG/BR-0006, “Instructions for
Completing Nuclear Material Transaction Reports,” to submit a DOE/NRC Form 741, “Nuclear
Material Transaction Report,” to the NMMSS to report other transactions that would otherwise
change the inventory balance within the material balance period.
Licensees use DOE/NRC Form 742C to report a facility’s physical inventory listing as of a
specified date. For each material type category, the report lists the amount of material in the
facility’s possession at the time of the inventory. The form can show each individual batch or
summarize totals of “like” batches. The totals for each material type category must match the
ending balance in the corresponding material balance report (DOE/NRC Form 742).
The NMMSS relies heavily on the quality of the data reported by the facilities involved in nuclear
activities. The data submitted to the NMMSS are subject to evaluation according to the
restrictions placed on nuclear activity by the policies of various governing agencies of the United
States. The NMMSS receives the data after they are verified by “edit checks” as acceptable
within the restrictions of the system.

1.2 Regulations
NRC regulations in 10 CFR 74.13 require each licensee that possessed SNM during a material
balance reporting period in a quantity totaling 1 gram or more of contained uranium (U)-235,
U-233, or plutonium (Pu) to prepare and submit in computer-readable format DOE/NRC
Forms 742 and 742C concerning SNM received, produced, possessed, transferred, consumed,
disposed of, or lost. Reporting periods are determined by the quantity of material possessed by
the facility, specifically as follows:
•

Licensees subject to the requirements of 10 CFR 74.51, “Nuclear Material Control and
Accounting for Strategic Special Nuclear Material,” shall compile a report as of March 31
and September 30 of each year and file the report within 30 days after the end of the
period covered by the report.

•

Licensees subject to the requirements of 10 CFR 74.19(c), 10 CFR 74.31(c)(5),
10 CFR 74.33(c)(4), or 10 CFR 74.43(c)(6) shall submit a report within 60 calendar days
of the beginning of the physical inventory.

•

Licensees reporting pursuant to 10 CFR 75.35, “Material Status Reports,” shall prepare
and submit material status reports as described in Section 3.2 of this NUREG.

•

All other licensees, including those subject to 10 CFR 150.17, “Submission to
Commission of Nuclear Material Status Reports,” shall submit a report no later than
March 31 of each year.

Licensees shall complete a separate DOE/NRC Form 742 and 742C for each material type of
SNM and source material for which a reportable quantity is possessed or a reportable inventory
change has occurred during the material balance period. For SNM, reportable quantities are
defined as 1 gram or more; for source material, the reportable quantity is 1 kilogram or more.
For reporting purposes, quantities of 0.5 or more are to be rounded up to the next whole unit.
Section 2 of this NUREG provides a complete listing of material types.

In addition, NRC regulations in 10 CFR 40.64, “Reports,” require each licensee that possesses,
or that had possessed in the previous reporting period, 1 kilogram or more of uranium or
1 kilogram or more of thorium source material pursuant to the operation of enrichment services,
the downblending of uranium that has an initial enrichment of the U-235 isotope of 10 percent or
more, or the fabrication of mixed-oxide fuels to complete and submit DOE/NRC Forms 742 and
742C for all activities involving the source material.
Furthermore, NRC regulations in 10 CFR 40.64(b)(1) require each Federal or State licensee
that possessed 1 kilogram or more of foreign obligated source material (material types 10, 81,
and 88) during a reporting period to submit a statement of foreign obligated source material
inventory to the NRC. The regulation allows the use of DOE/NRC Form 742. The reporting
period is October 1 to September 30 of each year (unless the NRC authorizes an alternate
period).
Each licensee required to report material balance, inventory, and/or foreign obligation
information, as detailed in this part, shall resolve any discrepancies identified during the report
review and reconciliation process within 30 calendar days of notification of a discrepancy
identified by the NRC. Section 1.5 of this NUREG contains additional instructions on
reconciliation.
Possessors of DOE-owned material should refer to DOE Order 470.4B and DOE Order 474.2
for additional information on reporting inventories.

1.3 Preparation and Submission of DOE/NRC Forms 742 and 742C in
Computer-Readable Format
NMMSS Report D-24 provides instructions for preparing DOE/NRC Forms 742 and 742C in
computer-readable format as required for submittal. The Safeguards Management Software
(SAMS) program is a facsimile of the NMMSS that allows the user to import and export data; do
“edit checks” to complete a quality review; generate various reports; and create material
balance, inventory, and transaction data. It has the capability to export data into the required
NMMSS predefined computer-readable format outlined in NMMSS Report D-24. The SAMS
program may be obtained from the NMMSS staff free of charge.
Licensees can submit data to the NMMSS through the following two methods:
(1)

Electronic Data Submission
Licensees should submit DOE/NRC Forms 742 and 742C in computer-readable format
unless reporting under 10 CFR 40.64(b). NMMSS Report D-24 provides instructions on
packaging, data format requirements, acceptable media types, and the mailing address
for the submittal of data on computer media.
Licensees can request a copy of the fillable forms installer kit by e-mailing the NMMSS
staff at nmmss@nnsa.doe.gov. These forms can be completed, saved at the licensee
site, and submitted to the NMMSS at this e-mail address. Licensees may also contact
the NRC program manager for questions about fillable forms and electronic data
submission by e-mailing the NRC at nmmss.resource@nrc.gov.

Licensees should adhere to their facility’s encryption policy for transmitting electronic
data to the NMMSS.
Licensees may also download data onto electronic media and mail the data to the
NMMSS. Contact the NMMSS staff to confirm the mailing address before sending mail.
(2)

New or Modified Methods of Transferring Electronic Data
The NRC may authorize new or modified methods of transferring electronic DOE/NRC
Form 742 and 742C data to the NMMSS. Licensees may confirm authorization to use
additional methods for the transfer of these data by contacting the NMMSS staff.

1.4 Documentation and Distribution
Licensees must submit the completed DOE/NRC Forms 742 and 742C to the NMMSS in a
timely manner, consistent with their possession license requirements. Before licensees submit
any data, they should determine whether their submission contains classified information
because the specific documentation and distribution instructions depend on whether the
completed DOE/NRC Form 742 or 742C contains classified or unclassified information.
Any DOE/NRC Form 742 or 742C that is classified must be documented and handled in
accordance with all pertinent security requirements. All other submissions that are not classified
are considered to be proprietary material control and accounting information, and licensees may
request that such information be withheld as defined by 10 CFR 2.390, “Public Inspections,
Exemptions, Requests for Withholding.” Each person who is to receive a copy of the report
must be verified as a qualified recipient before distribution. Licensees should confirm the
address before sending documents to the NMMSS or other recipients. In addition, they should
formally provide classification guidance to the NMMSS after deciding to classify or declassify a
submission or to change previously submitted guidance. When submitting safeguards
information, licensees should also submit DOE/NRC Form 740M, “Concise Note,” and state that
the submission is safeguards information and should be handled in accordance with
10 CFR 73.21, “Protection of Safeguards Information: Performance Requirements.”
Licensees should do the following when distributing the completed report:
•

Submit one copy of the completed report and all supporting subschedules and lists to
the NMMSS. All reporting identification symbol (RIS) holders are encouraged to review
their RIS point-of-contact information yearly and notify the NMMSS staff that the data are
correct or make changes.

•

Retain one copy for licensee files.

1.5 Reconciliation
At the end of every material balance reporting period, a reconciliation shall be performed
between reports submitted by the licensee to the NMMSS and the projected book inventory that
the NMMSS has calculated. This process shall be considered complete when the licensee
resolves any differences between the reported and projected balances, including those listed for

foreign obligated materials.2 The reconciliation should be completed within 30 calendar days of
when the licensee was notified of the discrepancy, and it should include all accounts, including
holding accounts, held by the licensee.
Facilities should ensure that their reported weight totals on DOE/NRC Form 742C equal the
weight totals on DOE/NRC Form 742 for each material type. The totals in DOE/NRC
Form 742C should be an arithmetic sum of the weights listed on the batch data lines of
DOE/NRC Form 742C. The totals on DOE/NRC Forms 742 and 742C should agree with the
values maintained and used at the site. However, if reported DOE/NRC Form 742 and 742C
values differ from site-maintained values because of issues such as rounding, the site should
submit a concise note (DOE/NRC Form 740M) explaining the difference.

Commercial practices allow a facility to conduct a foreign obligations exchange to meet a contractual
requirement. Foreign obligation exchanges are not meant to circumvent U.S. international agreements for
peaceful use and nuclear cooperation with trading partners. Facilities should use special care to avoid a
negative foreign obligations balance. The NMMSS may report a negative foreign obligations balance for a
facility at any given reporting date because of the time delay in reporting shipments versus receipt; however,
the NMMSS cannot reconcile a facility for a material balance period until the foreign obligations at the facility
are balanced.

2 INSTRUCTIONS FOR COMPLETING DOE/NRC FORM 742 REPORTS
Licensees should complete DOE/NRC Form 742 in accordance with the instructions in this
NUREG and in NMMSS Report D-24, as appropriate. NMMSS Report D-24 provides
instructions and examples for the preparation of required electronic submittals to the NMMSS.
The following numbered instructions correspond to the numbered blocks and lines on DOE/NRC
Form 742 that licensees must complete:
1.

NAME AND ADDRESS—Leave blank.

LICENSE NUMBER(S)—Leave blank.

REPORTING IDENTIFICATION SYMBOL (RIS)—Enter the RIS that has been assigned
and under which the source material or SNM being reported is or was held. Submit a
separate report for each RIS and any holding account.

REPORT PERIOD (MM/DD/YYYY)—Enter the inclusive dates. The beginning date for
the reporting period must be the next consecutive date after the ending date of the
previous report.

MATERIAL TYPE—Enter the appropriate material type code for the material being
reported, as follows:
CODE
10
E1
E2
E3
E4
50
70
81
833
88
89

DESCRIPTION
depleted uranium
uranium enriched greater than normal but less than 5 percent
uranium in enrichment of 5 percent or more but less than 20 percent
uranium in enrichment of 20 percent or more but less than 80 percent
uranium in enrichment of 80 percent or more
plutonium
U-233
normal uranium
Pu-238
thorium
uranium in cascades

Complete a separate DOE/NRC Form 742 for each SNM or source material type even
for cases in which two or more types are combined.

Report the material type as Pu-238 if the contained Pu-238 is greater than 10 percent of the total plutonium
by weight (material type 83); otherwise, report it as plutonium (material type 50). The element Pu-238 was
1 of the 12 material types originally reported in the electronic Nuclear Material Information System (NMIS),
which predated the NMMSS database. Pu-238 was primarily possessed by nuclear power and research
reactors that were government (DOE) owned and followed the convention for reporting at the 0.1-gram level.
When the NRC was formed in 1974, the NRC licensees possessing DOE-owned Pu-238 continued reporting
at the 0.1-gram level in accordance with DOE guidance. This reporting trend continued in practice even as
nuclear material became privately owned. DOE guidance continues to require sites to report transfers and
holdings of Pu-238 to the 0.1-gram level, if it is 10 percent or more Pu-238 (material type 83). NRC
regulations do not distinguish between plutonium isotopes. Licensees are required to report transactions
and holdings of plutonium (material type 50) to the nearest gram. The NRC accepts reporting of Pu-238 to
the nearest gram, reported as 0.1-gram units.

When U-235 and U-233 are mixed, report the total element weight of the mixture in the
element weight column of both the U-235 report and the U-233 report and reflect this
fact in a concise note (DOE/NRC Form 740M) for each report.

2.1 Section A, “Material Accountability”
PC [process code]—Enter one of the following process codes (A, C, or D); use process codes C
and D only to modify the report data for only the current processing period:
•

“A” refers to the initial entry of data.

•

“C” refers to the replacement of data. Data may be replaced at any time before the
close of the processing period in which the initial entry was made.

•

“D” refers to the deletion of data. Data may be deleted at any time before the close of
the processing period in which the initial entry was made.

Reported material balance reports may be modified for the current processing periods. Use
process code C for replacement and D for deletion, as follows:
•

Submit a form with the RIS, report period, material type, sequence number, and process
code C with the unique identifier for the line to be replaced.

•

Submit a form with the RIS, report period, material type, sequence number, and process
code D with the unique identifier for the line to be deleted.

•

Submit a form with the RIS, report period, material type with no sequence number, and
process code D to delete all matching records.

•

Submit a form with the RIS, report period, and process code D to delete the entire
material balance within the reporting dates.

SEQ [sequence number]—All detail lines that contain data must have a sequence number.
Enter a numerical value in sequential order beginning with 1. Do not repeat or skip numbers.
Use columns A and B to enter all numeric data by element and isotope weight. 4
COLUMN A—ELEMENT WEIGHT4
Enter the total element weight of the SNM or source material being reported. If the material is
Pu-238, reported as material type 83, report it to the nearest 0.1 gram. Report all other SNM to
the nearest gram and all other source material to the nearest kilogram.
COLUMN B—ISOTOPE WEIGHT3
In the case of enriched uranium or U-233, enter the weight of the isotope U-235 or U-233 as
appropriate; in the case of plutonium, enter the weight of the isotopes Pu-239 and Pu-241 to the
4

Round up fractions of 0.5 or greater. If the quantity to be entered is less than 0.5 of the reporting unit, round
down to the next whole reporting unit.

nearest gram; and in the case of Pu-238 (material type 83), enter the weight of the isotope
Pu-238 to the nearest 0.1 gram. If the material is depleted uranium, enter the weight of the
isotope U-235 to the nearest kilogram. Do not make an entry for other source materials.
Note that, for facilities reporting under 10 CFR Part 75, “Safeguards on Nuclear Material—
Implementation of Safeguards Agreements between the United States and the International
Atomic Energy Agency,” the facility attachment (FA) or transitional facility attachment (TFA) may
require different reporting units for element and isotope weight (i.e., the element weight in
kilograms and the isotope weight in grams). For this reason, the facility should report to the
NMMSS as required in its FA or TFA and should contact the NMMSS staff with any questions.
8.

BEGINNING INVENTORY—U.S. GOVT-OWNED—Enter the inventory of DOE-owned
SNM or source material as of the beginning of business on the first day of the period
covered by the report. The quantities reported on line 8 (columns A and B) must agree
with the reconciled quantities on line 80 of the report submitted for the previous reporting
period. Although the data field is titled “U.S. Govt-Owned,” enter only DOE-owned
material in this field.

BEGINNING INVENTORY—NOT U.S. GOVT-OWNED—Enter the inventory of SNM or
source material that is not DOE-owned as of the beginning of business on the first day of
the period covered by the report. The quantities reported on line 9 (columns A and B)
must agree with the reconciled quantities on line 81 of the report submitted for the
previous reporting period.

RECEIPTS
11.

PROCUREMENT FROM DOE—Enter quantities of SNM (or source material) that have
been purchased from DOE during the reporting period and reported to the NRC on
DOE/NRC Form 741. This may be done by listing individual receipts for each individual
RIS as reported on DOE/NRC Form 741 or a total of receipts for each individual RIS
during the reporting period. SNM or source material quantities entered on line 11 are
not entered on line 30.

13.

PROCUREMENT—FOR THE ACCOUNT OF DOE—Enter quantities of SNM (or source
material) that have been purchased for the account of DOE during the reporting period
and reported to the NRC on DOE/NRC Form 741. This may be done by listing individual
receipts for each individual RIS as reported on DOE/NRC Form 741 or a total of receipts
for each individual RIS during the reporting period. SNM or source material quantities
entered on line 13 are not entered on line 30.

14.

DOD RETURNS—USE A—Leave blank.

15.

DOD RETURNS—USE B—Leave blank.

16.

DOD RETURNS—OTHER USES—Leave blank.

21.

PRODUCTION—Enter the calculated net quantity of plutonium or U-233 produced in the
fuel or blanket material of a reactor during the reporting period. For licensees reporting
under 10 CFR Part 75, if the fuel from which the plutonium or U-233 was produced was
removed or discharged from the reactor during this reporting period, enter the
discharged quantity on line 21 directly after the word “Production.”

Uranium mines and mills should account for foreign obligated uranium milled as
production for the reporting period.
22.

FROM OTHER MATERIALS—Enter increases resulting from the introduction of another
material into the material balance being reported. If the added quantity is the result of
blending, burnup, or enrichment, identify the process by which the material was added
by entering the appropriate inventory change type (ICT) code from the following list:
CODE
EN
ED
NE
ND
DE
DN
EE

DESCRIPTION
enriched to normal
enriched to depleted
normal to enriched
normal to depleted
depleted to enriched
depleted to normal
enriched (low/high) to enriched (high/low)

“EE” can refer to a change from low enrichment to high, or from high enrichment to low
(i.e., any combination of the E1 through E4 material type codes).
30.

RECEIPTS REPORTED TO DOE/NRC ON DOE/NRC 741 (not listed elsewhere)—Enter
the SNM or source material received from others and reported on DOE/NRC Form 741
but not listed elsewhere on this form. This may be done by listing individual receipts by
RIS as reported on DOE/NRC Form 741 or a total of receipts from each individual RIS
during the report period.

34.

RECEIPTS—MISC—Enter the total quantity of material added to the inventory through
miscellaneous receipt transactions (ICT 34). This requirement includes nuclear material
removed from inventory and then returned to inventory, if not accounted for elsewhere
on this form.

37.

PROCUREMENT BY OTHERS—Leave blank.

38.

DONATED MATERIAL—FROM U.S. GOVT TO OTHERS—Enter the amount of
DOE-owned material donated and now non-DOE-owned.

39.

DONATED MATERIAL—FROM OTHERS TO U.S. GOVT—Enter the amount of
non-DOE-owned material donated that is now DOE-owned.

40.

TOTAL—Enter the sums of columns A and B (lines 8 through 39).

REMOVALS
41.

EXPENDED IN SPACE PROGRAMS—Leave blank.

42.

SALES TO U.S. GOVT—Enter quantities of non-DOE-owned SNM or source material
that have been sold and converted to DOE-owned during the reporting period and that
have been reported to the NRC on DOE/NRC Form 741. This may be done by listing
individual shipments by RIS as reported on DOE/NRC Form 741 or a total of shipments
to each individual RIS during the reporting period. (Do not enter SNM or source material
quantities on line 51 that have already been entered on line 42.)

43.

SALES TO OTHERS FOR THE ACCOUNT OF U.S. GOVT—Enter quantities of
DOE-owned SNM or source material that have been sold and converted to
non-DOE-owned during the reporting period and that have been reported to the NRC on
DOE/NRC Form 741. This may be done by listing individual shipments by RIS as
reported on DOE/NRC Form 741 or a total of shipments to each individual RIS during
the reporting period. (Do not enter SNM or source material quantities on line 51 that
have already been entered on line 43.)

44.

DOD—USE A—Leave blank.

45.

DOD—USE B—Leave blank.

46.

DOD—OTHER USES—Leave blank.

47.

EXPENDED IN U.S. GOVT TESTS—Leave blank.

48.

ROUTINE TESTS—Leave blank.

49.

SHIPPER—RECEIVER DIFFERENCE—Leave blank.

51.

SHIPMENTS REPORTED TO NRC/DOE ON NRC/DOE 741 (not listed elsewhere)—
Enter the quantities of SNM or source material shipped to others and reported to the
NRC on DOE/NRC Form 741 but not listed elsewhere on this form. This may be done
by listing individual shipments by RIS as reported on DOE/NRC Form 741 or a total of
shipments to each individual RIS during the reporting period.

54.

SHIPMENTS—MISC—Enter the total quantity of material removed from inventory
through miscellaneous shipment transactions during the reporting period.

58.

DONATED MATERIAL—TO U.S. GOVT BY OTHERS—Enter the amount of
non-DOE-owned nuclear material donated that is now DOE-owned.

59.

DONATED MATERIAL—TO OTHERS BY U.S. GOVT—Enter the amount of
DOE-owned nuclear material donated that is now non-DOE-owned.

65.

ROUNDING ADJUSTMENT—Enter the quantity of nuclear material that is removed (as
a positive number) or added (as a negative number) to the inventory as a result of
rounding.

71.

DEGRADATION TO OTHER MATERIALS—Enter decreases resulting from the
introduction of other material into the material balance being reported. If the decreased
quantity is the result of blending, burnup, or enrichment, identify the process by which
the material was removed by entering the appropriate code from the list in line 22 above.

72.

DECAY5—Enter the amount of radioactive decay that occurred during the reporting
period for plutonium (material type 50) and Pu-238 (material type 83). If the SNM being
reported is material type 50, enter the amount of radioactive decay of the isotope Pu-241
if the decay is 1 gram or more. If the SNM being reported is material type 83, enter the
amount of radioactive decay of the isotope Pu-238 to the nearest 0.1 gram.6

73.

FISSION AND TRANSMUTATION—Enter the calculated net quantities of SNM lost by
fission and transmutation in a reactor.

74.

75.

ACCIDENTAL LOSSES—Accidental loss is the irretrievable and inadvertent loss of a
known quantity of SNM or source material as the result of an operational accident, as
determined by measurement or by estimate on the basis of measurement.

76.

APPROVED WRITE-OFFS—Leave blank.

77.

INVENTORY DIFFERENCE—Inventory difference is the difference between physical
inventory and book inventory after the book has been adjusted for all receipts and
removals. A negative entry reports a gain. A positive entry reports a loss.
Reactors should not report an inventory difference to the NMMSS. At the time of
physical inventory, the value assigned to an SNM item (e.g., assembly, rod, fragment,
sealed container) should be recorded identically on both the book inventory and the
physical inventory. At a reactor, unlike at facilities that process SNM for some end use,
adjustments to the values assigned to items (representing factors such as nuclear loss,
decay, and production rounding) can be explained and should be reported as such.

80.

ENDING INVENTORY—U.S. GOVT OWNED—Enter the ending DOE-owned inventory
as of the end of the last day of the period covered by this report.

Round up fractions of 0.5 or greater. If the quantity to be entered is less than 0.5 of the reporting unit, round
down to the next whole reporting unit.
The element Pu-238 was 1 of the 12 material types originally reported in the electronic NMIS, which
predated the NMMSS database. Pu-238 was primarily possessed by nuclear power and research reactors
that were government (DOE) owned and followed the convention for reporting at the 0.1-gram unit. When
the NRC was formed in 1974, the NRC licensees possessing DOE-owned Pu-238 continued reporting to the
0.1-gram level in accordance with DOE guidance. This reporting trend continued in practice even as nuclear
material became privately owned. DOE guidance continues to require sites to report transfers and holding
of Pu-238 to the 0.1-gram level, if it is 10 percent or more Pu-238 (material type 83). NRC regulations do
not distinguish between plutonium isotopes. Licensees are required to report transactions and holdings of
plutonium (material type 50) to the nearest gram. The NRC accepts Pu-238 reported as material type 83, to
the nearest 0.1 gram.

81.

ENDING INVENTORY—NOT U.S. GOVT OWNED—Enter the ending non-DOE-owned
inventory as of the last day of the period covered by this report.

82.

TOTAL—Enter the sums of lines 41 through 81. The totals reported on this line must
agree with those on line 40.

83.

BIAS ADJUSTMENT—Leave blank.

2.2

Section B, “Foreign Obligations”

The total amount of foreign obligated nuclear material in a facility’s inventory as of the end of the
reporting period must be accounted for by material type. It may not exceed the total amount of
physical inventory (i.e., a “negative foreign obligations balance”). The NMMSS staff can provide
facilities with reports that calculate a foreign obligations balance for an RIS code based on the
balance of transactions reported since the last reconciliation date. The NMMSS-calculated
report may indicate a negative foreign obligations balance for a facility as a result of the delay in
reporting shipments versus receipts; however, the NMMSS is not authorized to reconcile a
facility for a material balance period until the foreign obligations at the facility are balanced.
The following column entries are required:
1.

COUNTRY OF OBLIGATION—Enter the unique foreign obligation code for each
category of nuclear material. Appendix C to this NUREG lists the codes available as of
the date of this NUREG publication. The current list of codes can be obtained from the
NMMSS staff by sending a request to nmmss@nnsa.doe.gov.

ELEMENT WEIGHT—Enter the element weight (plutonium, uranium, or thorium) of the
foreign obligated SNM or source material in the reporting units specified for column A of
Section A of the form (see Section 2.1 of this NUREG).

ISOTOPE WEIGHT—Enter the appropriate isotope weight. For enriched uranium or
U-233, enter the weight to the nearest gram of U-235 or U-233, as appropriate. No entry
is necessary for plutonium, depleted uranium, natural uranium, or thorium unless the
licensee’s TFA requires such an entry.

TOTAL WEIGHT—Enter the totals for columns 2 and 3. These totals represent the total
foreign obligated material at the facility. The total weight of foreign obligated nuclear
material may not exceed the total element and isotope weight reported on line 82.

2.3 Section C, “Certification”
SIGNATURE, TITLE, AND DATE—An authorized representative of the licensee shall sign the
report if the licensee submits it as a hard copy. If the licensee submits it electronically, the
licensee must establish internal procedures to ensure that the information in the report is
accurate and that only authorized licensee personnel prepare and issue the report.

3 INSTRUCTIONS FOR COMPLETING DOE/NRC FORM 742C
DOE/NRC Form 742C describes the status of the nuclear material reported on lines 80 and 81
of DOE/NRC Form 742 as of the end of the reporting period. There are two separate sets of
procedures for filing DOE/NRC Form 742C: (1) one for licensees required to report under
10 CFR 74.13 or 10 CFR 150.17 and (2) one for licensees required to report under
10 CFR Part 75.
The instructions for completing the form are presented separately for the two categories of
licensees.

3.1 Licensees Reporting under 10 CFR 74.13 or 10 CFR 150.17
The following numbered instructions correspond to the numbered blocks or lines on DOE/NRC
Form 742C that licensees are to complete. Source material that has no foreign obligation and
that is not used in the operation of enrichment services (i.e., downblending of uranium that has
an initial enrichment of U-235 of 10 percent or more) or in the fabrication of mixed-oxide fuels is
exempt from this requirement.
1.

NAME AND ADDRESS—Leave blank.

REPORTING IDENTIFICATION SYMBOL (RIS)—Enter the RIS of the reporting facility.

INVENTORY DATE—Enter the ending date of the reporting period for the material
balance report.

LICENSE NUMBER(S)—Leave blank.

BATCH DATA—The basic reporting unit is the batch, defined as a portion of nuclear
material handled as a unit for accounting purposes at a key measurement point and for
which the composition and quantity are defined by a single set of specifications or
measurements. The nuclear material may be in bulk form or contained in a number of
separate items.
A batch may have only one value for the following:
•
•
•
•
•

batch name
number of items
composition/facility code
scrap program
owner code

In general, enter all of the data for one batch on one line of block 5 of DOE/NRC
Form 742C. An exception is when a single item contains more than one material
(e.g., irradiated fuel containing both uranium and plutonium). In this case, use a
separate line for the data for each material, and enter all data common to all materials in
the batch on the first line.

5a.

MATERIAL TYPE—Enter the appropriate SNM type code, as follows:
CODE
10
E1
E2
E3
E4
20
50
70
81
83
88
89

5b.

DESCRIPTION
depleted uranium
uranium enriched greater than normal but less than 5 percent
uranium in enrichment of 5 percent or more but less than 20 percent
uranium in enrichment of 20 percent or more but less than 80 percent
uranium in enrichment of 80 percent or more
enriched uranium7
plutonium
U-233
normal uranium
Pu-238
thorium
uranium in cascade

COMP/FAC [COMPOSITION/FACILITY] CODE—Enter the appropriate code, as follows:
CODE8
860
861
862
863
864
865
866
899

DESCRIPTION
in reactors and critical assemblies
in cooling basins
in conversion and fabrication processes
in recovery processes
material not in process
unirradiated scrap awaiting recovery
unirradiated scrap awaiting disposal
inventory total line

5c.

ELEMENT WEIGHT—Enter the element weight as instructed for columns A and B of
Section A of DOE/NRC Form 742 (see Section 2.1 of this NUREG).

5d.

ISOTOPE WEIGHT—Enter the isotope weights as instructed for columns A and B of
Section A of DOE/NRC Form 742 (see Section 2.1 of this NUREG).

5e.

DOE PROJECT NO.—Leave blank unless DOE-owned material is being reported. See
DOE Series 470 orders for guidance.

5f.

SCRAP PROGRAM—Leave blank.

5g.

WEIGHT PERCENT ISOTOPE—Leave blank.

5h.

OWNER CODE—This code describes the ownership of the material at the time of the
physical inventory taking. Enter the appropriate code (G or J), as follows:
•
•

“G” refers to DOE-owned material.
“J” refers to non-DOE-owned material.

This code is used when totaling all E1–E4 values reported by the facility in the inventory total for line 899.

Appendix A to this NUREG provides more detailed code instructions.

Refer to the glossary in Appendix D to this NUREG for further description of DOE-owned
material.
5i.

SEQUENCE NUMBER—Enter the line number. Number lines consecutively beginning
with 1. Do not repeat or skip numbers.

5j.

BATCH NAME—No entry is required, except as described in Section 3.2 and Appendix
E of this NUREG. A RIS may choose to batch like items to facilitate inventory-taking.
Entries in this field should be limited to 16 alpha-numeric characters only.

5k.

NO. OF ITEMS—No entry is required, except as described in Section 3.2 and Appendix
E of this NUREG. A RIS may choose to batch like items to facilitate inventory-taking.

5l.

KEY MEASURE POINT—Leave blank.

5m.

MEASUREMENT I.D.—Leave blank.

5n.

ENTRY STATUS—Leave blank.

5o.

MBA [material balance area]—Leave blank.

5p.

SITE IDC [identification code]—Leave blank.

5q.

PROCESS CODE—Enter one of the following process codes (A, C, or D); use process
codes C and D to modify report data for only the current processing period:
•

“A” refers to the initial entry of data.

•

“C” refers to the replacement of data. Data may be replaced at any time before
the close of the processing period in which the initial entry was made.

•

“D” refers to the deletion of data. Data may be deleted at any time before the
close of the processing period in which the initial entry was made.

Reported inventories may be modified for the current processing periods. Use process
code C for replacement and D for deletion, as follows:
•

Submit a form with the RIS, report period, material type, sequence number, and
process code C with the unique identifier for the line to be replaced.

•

Submit a form with the RIS, report period, material type, sequence number, and
process code D with the unique identifier for the line to be deleted.

•

Submit a form with the RIS, report period, material type with no sequence
number, and process code D to delete all matching records.

•

Submit a form with the RIS, report period, and process code D to delete the
entire inventory within the reporting dates

TOTALS—Enter the total inventory reported in the above categories for element weight
(5c), isotope weight (5d), and the next sequence number. These total elemental and
isotopic weights must agree with the sum of the quantities entered on lines 80 and 81 on
DOE/NRC Form 742 for each individual material type being reported.

SIGNATURE—An authorized representative of the licensee shall sign the report if the
licensee submits it as a hard copy; otherwise, each licensee must establish internal
procedures to ensure that the information in the report is accurate and that only
authorized licensee personnel prepare and issue the reports.

TITLE—Enter the title of the person submitting the report (required only for paper
submission).

DATE—Enter the date the report was submitted (required only for paper submission).

Submit the data as specified in Section 1.3 of this NUREG.
Refer to DOE Series 470 orders (DOE Orders 470.4 and 474.2) for DOE-owned material
holdings. In addition, reporting data for DOE-owned inventory in an expanded level of detail to
comply with DOE reporting requirements meets the NRC’s inventory reporting requirements.
The total of DOE-owned inventory on which inventory data are reported must agree with the
quantity entered on line 80 on DOE/NRC Form 742.

3.2 Licensees Reporting under 10 CFR Part 759
The instructions in this section apply only to facilities that the NRC has notified by letter, as
provided in 10 CFR 75.10, “Facilities,” that they have been identified under the
U.S./International Atomic Energy Agency (IAEA) Safeguards Agreement. Facilities that are
required to submit reports under 10 CFR 75.32, “Initial Inventory Report,” and facilities for which
a physical inventory is not performed shall prepare DOE/NRC Form 742 according to the
instructions in Section 2.1 of this NUREG, completing lines 2, 3, 4, 80, 81, and 82. The licensee
may base the information in the initial inventory report on its book record. Facilities reporting
under this section must file subsequent material balance reports based on a physical inventory
and submit DOE/NRC Form 742C. Such reports are required for each physical inventory taken
as part of the material control and accounting procedures under 10 CFR 75.21, “General
Requirements.” Unless license conditions specify otherwise, such reports shall be dispatched
as soon as possible and, in any event, within 30 days after the start of the physical inventory.
After the licensee completes DOE/NRC Form 742C, it should follow the instructions in
Section 1.3 of this NUREG to prepare the submittal in computer-readable format.
The following numbered instructions correspond to the numbered blocks or columns that
licensees are to complete on DOE/NRC Form 742C:
1.

NAME AND ADDRESS—Leave blank.

REPORTING IDENTIFICATION SYMBOL (RIS)—Enter the RIS of the reporting facility.

Possessors of nuclear material outside facilities and reporting inventories of source material and SNM under
the U.S./IAEA Caribbean Territories Safeguards Agreement Modified Small Quantities Protocol
(INFCIRC/366) should follow the supplemental instructions in Appendix E to this NUREG.

INVENTORY DATE—Enter the ending date for the period covered by the material
balance report.

LICENSE NUMBER(S)—Leave blank.

batch name
number of items
composition/facility code
key measurement point
measurement basis
owner code

In general, enter all of the data for one batch on one line of block 5 of DOE/NRC
Form 742C. One exception is when a single discrete item contains more than one
material (e.g., irradiated fuel containing both uranium and plutonium). In such a case,
use a separate line for the data for each material, and enter all data common to all
materials in the batch on the first line.
5a.

MATERIAL TYPE—Enter the appropriate material type code, as follows:
CODE
10
E1
E2
E3
E4
50
70
81
83
88
89

5b.

COMP/FAC [composition/facility] CODE—Enter the appropriate code from the list
developed during the formulation and negotiation of the FA or TFA.

5c.

ELEMENT WEIGHT—Enter the weight of the contained SNM or source material in the
same units as specified for Section A of DOE/NRC Form 742 (see Section 2.1 of this
NUREG).

5d.

ISOTOPE WEIGHT—Enter the isotope weight according to the requirements of the
facility’s FA or TFA.

5e.

DOE PROJECT NO.—Leave blank unless DOE-owned material is being reported. See
DOE Series 470 orders for guidance.

5f.

SCRAP PROGRAM—Leave blank.

5g.

WEIGHT PERCENT ISOTOPE—Enter the weight percent of the isotope U-235
contained in either enriched or depleted uranium. Leave this field blank for U-235
contained in natural uranium unless the facility’s FA or TFA requires the information. For
plutonium, enter the weight percent of the isotope Pu-240. For Pu-238 (material
type 83), enter the weight percent of the isotope Pu-238. Report weight percent to at
least two, but not more than four, decimal places depending on the accuracy of the
measurement method (e.g., XX.XXXX%). For U-233, enter the parts per million of
U-232. This column does not apply for normal uranium or thorium. Use separate lines
to report material of different enrichments.

5h.

OWNER CODE—This code describes the ownership of the material at the time it was in
the shipper’s possession. Enter the appropriate code (G or J), as follows:
•
•

“G” refers to DOE-owned material.
“J” refers to non-DOE-owned material.

Refer to the glossary in Appendix D to this NUREG for further description of DOE-owned
material.
5i.

SEQUENCE NUMBER—Enter the line number. Use consecutive numbers beginning
with 1. Do not repeat or skip numbers.

5j.

BATCH NAME—Enter a unique identifier for the batch as defined in block 5. If the batch
is a discrete item with a unique identifying serial number or name (e.g., a fuel assembly,
sealed source, or uranium hexafluoride cylinder), enter the identification number of the
batch name. Note that the same batch name should not appear twice in the same report
for the same material type.

5k .

NO. OF ITEMS—If the batch is composed of a number of discrete items, enter the
number of items. If the batch is bulk material or if the number of items is not meaningful,
enter 1. If more than one line is used to report data on the batch, enter the number of
data items on each line.

5l.

KEY MEASURE POINT—Enter the code for the appropriate inventory key measurement
point, as specified in the FA or TFA.

5m.

MEASUREMENT I.D.—Fill in the three sections of this data field as described below.

5m1.

MEAS. BASIS—Enter the pertinent code for the measurement basis as specified in the
FA or TFA.

5m2.

OTHER MEAS. POINT—Leave this field blank unless the FA or TFA requires the
information.

5m3.

MEAS. METHOD—In some cases, the FA or TFA may provide codes for identifying the
measurement method used. In such cases, enter the appropriate code.
20

5n.

ENTRY STATUS—Enter N for “new entry.”

5o.

MBA [material balance area]—Leave blank.

5p.

SITE IDC—Leave blank.

5q.

PROCESS CODE—Enter one of the following process codes (A, C, or D); use process
codes C and D to modify report data for only the current processing period:
•

“A” refers to the initial entry of data.

•

“C” refers to the replacement of data. Data may be replaced at any time before
the close of the processing period in which the initial entry was made.

•

“D” refers to the deletion of data. Data may be deleted at any time before the
close of the processing period in which the initial entry was made.

Reported inventories may be modified for the current processing periods. Use process
code C for replacement and D for deletion, as follows:
•

Submit a form with the RIS, report period, material type, sequence number, and
process code C with the unique identifier for the line to be replaced.

•

Submit a form with the RIS, report period, material type, sequence number, and
process code D with the unique identifier for the line to be deleted.

•

Submit a form with the RIS, report period, material type with no sequence
number, and process code D to delete all matching records.

•

Submit a form with the RIS, report period, and process code D to delete the
entire material balance within the reporting dates.

TOTALS—Enter the total inventory reported in the above categories for element weight
(5c), isotope weight (5d), and the next sequence number. This total must agree with the
sum of the quantities entered on lines 80 and 81 on DOE/NRC Form 742.

SIGNATURE—An authorized representative of the licensee must sign the form, if the
licensee submits it as hard copy; otherwise, each licensee must establish internal
procedures to ensure that the information in the report is accurate and that only
authorized licensee personnel prepare and issue the reports.

TITLE—Enter the title of the person who signed the report (required only for paper
submission).

DATE—Enter the date the report was signed (required only for paper submission).

APPENDIX A
COMPOSITION CODE INSTRUCTIONS

COMPOSITION CODE INSTRUCTIONS
860

In Reactors and Critical Assemblies

Enter this code for special nuclear material (SNM) or source material in reactors, test piles, and
critical assemblies and for SNM being used for radiation studies. Do not use this code to report
excess, spare, or transiently used fuel elements. Reactors use this code to indicate fuel in core.
861

In Cooling Basins

Enter this code for irradiated SNM or source material in cooling basins held for future recovery
or disposal (including reactor-produced SNM). Use this code for spent fuel in dry storage as
well. Reactors use this code to indicate fuel discharged in wet or dry storage.
862

In Conversion and Fabrication Processes

Enter this code for SNM or source material in conversion or fabrication processes that changes
its chemical or physical form. Sealed sources, unopened receipts, and ultimate products
maintained under tamper-safe conditions are not considered to be “in process.” Use this code
to reflect uranium within an enrichment plant (i.e., cascade) as well. This code does not apply
to reactors.
863

In Recovery Processes

Enter this code for SNM or source material in a recovery process (i.e., nuclear material in the
process of being separated from original fuel and other reactor products and nuclear material in
the process of being removed from undesired materials and converted to usable forms). This
code does not apply to reactors.
864

Materials Not in Process

Enter this code for SNM or source material in all unopened receipts, sealed sources, and
ultimate products maintained under tamper-safe conditions. Use this code to report excess,
spare, or transiently used fuel elements. Reactors use this code to indicate storage of fresh fuel
not in process.
865

Unirradiated Scrap Awaiting Recovery

Enter this code for SNM or source material in unirradiated scrap material that is awaiting
in-house or offsite recovery. Reactors would use this code to indicate fission chambers,
containers, or loose pellets not reported by code 861.
866

Unirradiated Scrap Awaiting Disposal

Enter this code for SNM or source material in unirradiated scrap material that is awaiting
transfer to an authorized disposal facility. This code does not apply to reactors.

A-1

899

Inventory Total Line

Enter the cumulative total reported for a given material type. This code shall be reported for all
generic material types. For all enriched uranium entries (E1, E2, E3, and E4), sum the weights
together and report this value on the line 899.

A-2

APPENDIX B
DOE/NRC FORM 742, “MATERIAL BALANCE REPORT” (BLANK), AND
DOE/NRC FORM 742C, “PHYSICAL INVENTORY LISTING” (BLANK)

DOE/NRC Form 742, “Material Balance Report” (Blank),
and DOE/NRC Form 742C, “Physical Inventory Listing”
(Blank)

B-1

B-2

B-3

APPENDIX C
FOREIGN OBLIGATION CODES

Material Balance
Code

Foreign Obligation Entity

Australia

Canada

European Atomic Energy Community (EURATOM)1

Japan

People’s Republic of China

Russia

Switzerland

Argentina

Brazil

Chile

India

Republic of Korea

Taiwan

Socialist Republic of Vietnam

Japan/Russia

EURATOM/Russia

Australia/Japan/Russia

Canada/Japan/Russia

EURATOM/Japan/Russia

Louisiana Energy Services (LES) Centrifuge Enrichment/Japan

Australia/Japan/LES Centrifuge Enrichment

Canada/Japan/LES Centrifuge Enrichment

EURATOM/Japan/LES Centrifuge Enrichment

Australia/EURATOM/Japan/LES Centrifuge Enrichment

Canada/EURATOM/Japan/LES Centrifuge Enrichment

China/Japan/LES Centrifuge Enrichment

Australia/Canada/EURATOM/Japan/LES Centrifuge Enrichment

Australia/Japan

Canada/Japan

EURATOM/Japan

Australia/EURATOM/Japan

Canada/EURATOM/Japan

China/Japan

Australia/Canada

EURATOM comprises 28 member states: Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, the Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, and
the United Kingdom.

C-1

Material Balance
Code

Note:

Foreign Obligation Entity (cont.)

Australia/Canada/EURATOM

LES Centrifuge Enrichment

Australia/EURATOM

Canada/EURATOM

LES Centrifuge Enrichment/Australia

LES Centrifuge Enrichment/Canada

LES Centrifuge Enrichment/EURATOM

Australia/Russia

Canada/Russia

Former Soviet Union Weapons

The Nuclear Materials Management and Safeguards System staff will provide updated information
on valid foreign obligation codes.

C-2

APPENDIX D
GLOSSARY

GLOSSARY
Accountability—In U.S. Department of Energy (DOE) terminology, the determination and
current record maintenance of special nuclear material (SNM) and source material quantities
associated with transfers, measured discards, inventories, and inventory differences (IDs) that
might result from theft, diversion, or other unidentified loss mechanisms.
Agreement State—A State that has signed an agreement with the U.S. Nuclear Regulatory
Commission (NRC) under which the State regulates the use of byproduct, source, and small
quantities of SNM in that State.
Book inventory—The algebraic sum of the most recent physical inventory of the material
balance area and of all inventory changes that have occurred since the physical inventory was
taken.
Concise Note—DOE/NRC Form 740M, “Concise Note,” which is used to provide additional
information concerning nuclear material transaction, material balance, or inventory data
supplied by facilities engaged in the import or export of nuclear materials, by facilities selected
under the provisions of the agreement between the United States and the International Atomic
Energy Agency for the application of safeguards in the United States, or by any facility that
would like to transmit any additional explanatory information on nuclear material.
DOE-owned material—Nuclear material that, although used as part of a licensee’s activities, is
actually a DOE-owned asset. These materials may be bulk materials, discrete radiation
sources, or finished products. Such materials may represent a lease or loan arrangement with
the DOE and are represented by an owner code of G on shipping information (i.e., DOE/NRC
Form 741, “Nuclear Material Transaction Report”) and inventory documentation (i.e., DOE/NRC
Form 742, “Material Balance Report,” and DOE/NRC Form 742C, “Physical Inventory Listing”).
A licensee can determine whether nuclear material in its possession is DOE-owned by
reviewing its DOE/NRC Form 741 documentation, which lists the original receipt of the material.
If DOE owns such material, the licensee’s portion of the form will show the owner code G.
European Atomic Energy Community—As of January 2019, an organization consisting of the
following member countries: Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, the Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, and the United Kingdom.
Foreign obligated nuclear material—Source material or SNM that is subject to the terms and
conditions of a peaceful use agreement under Section 123 of the Atomic Energy Act of 1954, as
amended, that the U.S. Government has entered into with another government or group of
governments.
Highly enriched uranium—Uranium enriched to 20 percent or greater in the isotope uranium
(U)-235.
Holding account—Typically identified by an NRC-assigned four-character reporting
identification symbol (RIS) that ends in the letter H. These accounts usually acquired inventory

D-1

material from the primary RIS in use at the licensee’s facility. Typically, a few licensees have
used these accounts for nuclear materials not expected to be immediately processed,
reprocessed, or disposed. However, the licensed nuclear materials in holding accounts are still
in the licensee’s possession and must be included in inventories reported to the Nuclear
Materials Management and Safeguards System.
Inventory difference—The arithmetic difference between a book inventory and the
corresponding physical inventory that closes the material balance period. It is calculated by
subtracting the ending inventory (EI) and removals from inventory (R) from the beginning
inventory (BI) and additions to inventory (A) during the period between physical inventories.
Mathematically, ID can be expressed as follows:
ID = (BI + A - R) – EI,
where (BI + A - R) is the book inventory.
Inventory reconciliation—The adjustment of the book record quantity of elements and fissile
isotope weights to reflect the results of a physical inventory. In a broad sense, inventory
reconciliation involves the activities of calculating (1) the ID for the material balance period in
question, (2) the uncertainty value associated with the ID, (3) the active inventory for the period,
and (4) any bias adjustment or prior period adjustment associated with the ID value.
Low-enriched uranium—Uranium enriched below 20 percent in the isotope U-235.
Material balance period—The time span to which a material or physical inventory pertains.
Nuclear Materials Management and Safeguards System—The national database and
information system for select nuclear materials controlled by the U.S. Government. This system
was created to support national safeguards and management objectives in domestic and
international programs. The system stores data on nuclear material transactions and
inventories and produces a wide range of printed reports for use by the DOE and NRC and by
those licensees that they regulate. The system is used to satisfy the nuclear materials
information requirements of agreements between the United States and foreign entities. In
addition, the system provides the reporting interface between facilities selected under the
provisions of the U.S./International Atomic Energy Agency Safeguards Agreement.
Nuclear material outside facilities—The nuclear material that is not in a facility and is
customarily used in amounts of 1 effective kilogram or less.
Physical inventory—A physical determination of the quantity of nuclear material on hand at a
given time. The methods of physical inventory and the associated measurements vary
depending on the material to be inventoried and the process involved. A book inventory
between physical inventory takings can be calculated based on the physical inventory quantity
from the prior period together with all subsequent inventory changes associated with the
determination of that book inventory. The primary purpose of a physical inventory is to confirm
the absence of (or to detect) a loss, theft, or diversion of SNM.

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Reporting period—The period that includes defined dates (e.g., October 1, 2005, through
September 30, 2006). Each reporting period must begin the day after the previous reporting
period ended.
Reporting identification symbol—A unique combination of three or four characters that the
NRC assigns to each reporting organization for the purpose of identification in the Nuclear
Materials Management and Safeguards System database.
Shipper-receiver difference—The weight difference for a shipment between the shipper and
receiver values based on measurements.
Source material—Uranium or thorium, or any combination thereof, in any physical or chemical
form or ores that contain by weight 0.05 percent or more of uranium, thorium, or any
combination thereof. Source material does not include SNM.
Special nuclear material—Plutonium, uranium-233, and uranium enriched in the isotope U-233
or U-235.

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APPENDIX E
SUPPLEMENTAL INSTRUCTIONS FOR POSSESSORS OF NUCLEAR
MATERIAL OUTSIDE FACILITIES THAT REPORT UNDER THE
U.S./INTERNATIONAL ATOMIC ENERGY AGENCY CARIBBEAN
TERRITORIES SAFEGUARDS AGREEMENT MODIFIED SMALL
QUANTITIES PROTOCOL (INFCIRC/366) ON U.S. DEPARTMENT OF
ENERGY/U.S. NUCLEAR REGULATORY COMMISSION FORMS 742
AND 742C

SUPPLEMENTAL INSTRUCTIONS FOR POSSESSORS OF NUCLEAR
MATERIAL OUTSIDE FACILITIES THAT REPORT UNDER THE
U.S./INTERNATIONAL ATOMIC ENERGY AGENCY CARIBBEAN
TERRITORIES SAFEGUARDS AGREEMENT MODIFIED SMALL
QUANTITIES PROTOCOL (INFCIRC/366) ON U.S. DEPARTMENT OF
ENERGY/U.S. NUCLEAR REGULATORY COMMISSION FORMS 742
AND 742C
E.1 Introduction
INFCIRC/366, “U.S.-IAEA Caribbean Territories Safeguards Agreement,” is an agreement
between the U.S. Government and the International Atomic Energy Agency (IAEA) for the
application of safeguards in connection with the Treaty for the Prohibition of Nuclear Weapons
in Latin America (Tlatelolco Treaty), brought into force on July 3, 2018. Under Article 60 of
INFCIRC/366, the United States is obligated to submit an initial inventory report on all nuclear
material in its Caribbean territories to the IAEA. By IAEA definition, nuclear material includes all
uranium, plutonium, and thorium holdings in the relevant territories in any chemical or physical
form. U.S. Caribbean territories include Puerto Rico and the U.S. Virgin Islands, as defined in
Title 10 of the Code of Federal Regulations (10 CFR) 75.4, “Definitions.” The United States
fulfills this reporting commitment through the collection of information in accordance with
10 CFR Part 75, “Safeguards on Nuclear Material—Implementation of Safeguards Agreements
between the United States and the International Atomic Energy Agency.” This appendix
provides instructions for licensees reporting inventory under 10 CFR 75.32, “Initial Inventory
Report,” and 10 CFR 75.35, “Material Status Reports,” in accordance with INFCIRC/366.

E.2 General Instructions
The instructions in this appendix apply only to possessors of nuclear material outside facilities
(possessors), as defined in 10 CFR 75.4. Possessors are required to submit initial inventory
under 10 CFR 75.32 by preparing U.S. Department of Energy (DOE)/U.S. Nuclear Regulatory
Commission (NRC) Form 742C, “Physical Inventory Listing,” in accordance with the instructions
in Section E-2.1 of this appendix. The information in the initial inventory report may be based
on the licensee’s book record. Possessors reporting under this section must file subsequent
material balance reports based on a physical inventory and are required to attach a completed
DOE/NRC Form 742, “Material Balance Report,” in accordance with the instructions in
Section E-2.2 of this appendix. Such reports are required with respect to each physical
inventory taken as part of the material control and accounting procedures under 10 CFR 75.21,
“General Requirements.” Unless otherwise specified by license conditions, such reports shall
be dispatched as soon as possible and, in any event, within 30 days after the start of the
physical inventory. The reports must be filed as specified in the facility attachment for
possessors of nuclear material outside facilities, which the NRC will provide to applicable
licensees required to report under 10 CFR Part 75.
Nuclear Materials Management and Safeguards System (NMMSS) Report D-24, “Personal
Computer Data Input for Nuclear Regulatory Commission Licensees,” provides instructions and
examples for the preparation of required electronic submittals to the NMMSS.

E-1

E.2.1 Instructions for Completing DOE/NRC Form 742C
The following numbered instructions correspond to the numbered blocks or columns that
possessors are to complete on the physical inventory listing:
1.

NAME AND ADDRESS—Leave blank.

REPORTING IDENTIFICATION SYMBOL (RIS)—Enter the RIS of the possessor of
nuclear material outside facilities that is reporting inventory.

INVENTORY DATE—Enter the ending date for the period covered by the material
balance report.

LICENSE NUMBER(S)—Leave blank.

batch name
number of items
composition/facility code
key measurement point
measurement basis
owner code

In general, enter all of the data for one batch on one line of block 5 of DOE/NRC Form 742C.
The licensee shall report all batches that contain a known weight of nuclear material, even if the
element or isotope weight rounds to zero reportable units. In addition, the licensee shall submit
DOE/NRC Form 740M, “Concise Note,” to provide the actual measurement for any batch that
rounds to zero reportable units.
5a.

MATERIAL TYPE—Enter the appropriate special nuclear material (SNM) type code, as
follows:

E-2

CODE
10
201
50
70
81
83
88
89

DESCRIPTION
depleted uranium
enriched uranium
plutonium
U-233
normal uranium
Pu-238
thorium
uranium in cascade

5b.

COMP/FAC [composition/facility] CODE—Enter the appropriate code that describes the
physical form (e.g., unencapsulated or encapsulated) and the chemical form of the
material from the list provided in Code 4 of the Locations Outside Facility Attachment. In
addition, Composition Code 899 applies to the inventory total line. Enter the cumulative
total reported for a given material type.

5c.

ELEMENT WEIGHT—Enter the weight of the contained SNM or source material in the
same units as specified for Section A of DOE/NRC Form 742 (see Section E-2.2 of this
appendix).
If the quantity to be entered is equal to or greater than 0.5 of the reporting unit, the
quantity should be rounded up to the next whole reporting unit. If the quantity to be
entered is less than 0.5 of the reporting unit, the quantity should be rounded down to the
next whole reporting unit.
For processors with greater than 0.0 kilograms but less than 0.5 kilograms of source
material and greater than 0.0 grams but less than 0.5 grams of SNM, which are rounded
to a zero value when reported, processors are to provide DOE/NRC Form 740M, which
will define the actual weights.

5d.

ISOTOPE WEIGHT—Enter the isotope weight. For enriched uranium or uranium
(U)-233, enter the weight to the nearest gram of U-235 or U-233, as appropriate. For
plutonium (material type 50), enter the sum of plutonium (Pu)-239 and Pu-241 to the
nearest gram. For Pu-238 (material type 83), enter the weight of the isotope Pu-238 to
the nearest 0.1 gram. For natural and depleted uranium, enter the weight of the U-235
isotope to the nearest gram and report to three decimal places. Do not make an entry
for thorium.

If reporting enriched uranium (material type 20), enter the appropriate enrichment level code in lieu of
material type 20, as follows:
CODE
E1
E2
E3
E4

DESCRIPTION
greater than normal but less than 5 percent
5 percent or more but less than 20 percent
20 percent or more but less than 80 percent
80 percent or more

E-3

Processors who have rounded are to provide DOE/NRC Form 740M, which will define
the actual weights.
5e.

DOE PROJECT NO.—Do not make an entry unless reporting DOE-owned material.
See DOE Series 470 orders for guidance.

5f.

SCRAP PROGRAM—Do not make an entry unless reporting DOE-owned material. See
DOE Series 470 orders for guidance.

5g.

WEIGHT PERCENT ISOTOPE—Enter the weight percent of the isotope U-235 if the
material is uranium enriched or depleted in U-235. Do not make an entry for U-235 in
natural uranium. For plutonium (material type 50), enter the weight percent of the
isotope Pu-240. For Pu-238 (material type 83), enter the weight percent of the isotope
Pu-238. Report weight percent to at least two, but not more than four, decimal places
depending on the accuracy of the measurement method (e.g., XX.XXXX%). For U-233,
enter the parts per million of U-232. For depleted uranium with an enrichment of
0.5 percent or less, enter “0.3%” if the enrichment is unknown. This column does not
apply for normal uranium or thorium. Use separate lines to report material of different
enrichments.

5h.

OWNER CODE—This code describes the ownership of the material at the time it was in
the shipper’s possession. Enter the appropriate code (G or J), as follows:
•
•

“G” refers to DOE-owned material.
“J” refers to non-DOE-owned material.

Refer to the glossary in Appendix D to this NUREG for further description of DOE-owned
material.
5i.

SEQUENCE NUMBER—Enter the line number. Use consecutive numbers beginning
with 1. Do not repeat or skip numbers.

5j.

BATCH NAME—Enter a unique identifier for the batch as defined in block 5. If the batch
is a discrete item with a unique identifying serial number or name (e.g., industrial
radiography cameras, medical isotope generators), enter the identification number of the
batch name. Note that the same batch name must not appear twice in the same report
for the same material type, must not include special characters (e.g., :, /), and must not
exceed 16 characters.

5k.

5l.

KEY MEASURE POINT—Enter the appropriate code from the list provided in Code 4 of
the Locations Outside Facility Attachment.

5m.

MEASUREMENT I.D.—Leave blank.

5m1.

MEAS. BASIS—Enter the appropriate code from the list provided in Code 4 of the
Locations Outside Facility Attachment.
E-4

5m2.

OTHER MEAS. POINT—Leave blank.

5m3.

MEAS. METHOD—Leave blank.

5n.

ENTRY STATUS—Enter N for “new entry.”

5o.

MBA [material balance area]—Leave blank.

5p.

SITE IDC [identification code]—Leave blank.

5q.

PROCESS CODE—Enter one of the following process codes (A, C, or D); use process
codes C and D to modify report data for only the current processing period:
•

“A” refers to the initial entry of data.

•

“C” refers to the replacement of data. Data may be replaced at any time before
the close of the processing period in which the initial entry was made.

•

“D” refers to the deletion of data. Data may be deleted at any time before the
close of the processing period in which the initial entry was made.

Reported material balance reports may be modified for the current processing periods.
Use process code C for replacement and D for deletion, as follows:

•

Submit a form with the RIS, report period, material type, sequence number, and
process code C with the unique identifier for the line to be replaced.

•

Submit a form with the RIS, report period, material type, sequence number, and
process code D with the unique identifier for the line to be deleted.

•

Submit a form with the RIS, report period, material type with no sequence
number, and process code D to delete all matching records.

•

Submit a form with the RIS, report period, and process code D to delete the
entire material balance within the reporting dates.

TOTALS—If all lines being reported have the same material type, enter the total
inventory reported in the above categories for element weight (5c), isotope weight (5d),
and the next sequence number. This total must agree with the sum of the quantities
entered on lines 80 and 81 on DOE/NRC Form 742.
If multiple material types are being reported on DOE/NRC Form 742C, the “Totals” field
will not be filled, and a line with the Composition Code 899 will display the “Inventory
Total Line” where the cumulative total is reported for a given material type. This code
must be reported for all generic material types. There should be only one code per
generic material type. For all enriched uranium entries (E1, E2, E3, and E4), sum the
weights together, and report this value on line 899.

SIGNATURE—An authorized representative of the licensee must sign the form if the
licensee submits a hard copy; otherwise, each licensee must establish internal

E-5

procedures to ensure that the information in the report is accurate and that only
authorized licensee personnel have prepared and issued the report.
8.

TITLE—Enter the title of the person who signed the report (required only for paper
submission).

DATE—Enter the date the report was signed (required only for paper submission).

E.2.2 Instructions for Completing DOE/NRC Form 742
The following numbered instructions correspond to the numbered blocks and lines on DOE/NRC
Form 742 that licensees must complete:
1.

NAME AND ADDRESS—Leave blank.

LICENSE NUMBER(S)—Leave blank.

REPORT PERIOD (MM/DD/YYYY)—Enter the inclusive dates. The beginning date for
the reporting period must be the next consecutive date after the ending date of the
previous report.

MATERIAL TYPE—Enter the appropriate code for the material being reported, as
follows:
CODE
10
E1
E2
E3
E4
50
70
81
832
88
89

Complete a separate DOE/NRC Form 742 for each SNM or source material type even in cases
in which two or more types are combined.
When U-235 and U-233 are mixed, report the total element weight of the mixture in the element
weight column of both the U-235 report and the U-233 report, and reflect this fact in a concise
note (DOE/NRC Form 740M) for each report.

Report the material as Pu-238 if the contained Pu-238 is greater than 10 percent of total plutonium by weight
(material type 83); otherwise, report it as plutonium (material type 50).

E-6

Section A, “Material Accountability”
PC [process code]—Enter one of the following process codes (A, C, or D); use process codes C
and D to modify report data for only the current processing period:
•

“A” refers to the initial entry of data.

•

“C” refers to the replacement of data. Data may be replaced at any time before the
close of the processing period in which the initial entry was made.

•

“D” refers to the deletion of data. Data may be deleted at any time before the close of
the processing period in which the initial entry was made.

Reported material balance reports may be modified for the current processing periods. Use
process code C for replacement and D for deletion, as follows:
•

Submit a form with the RIS, report period, material type, sequence number, and process
code C with the unique identifier for the line to be replaced.

•

Submit a form with the RIS, report period, material type, sequence number, and process
code D with the unique identifier for the line to be deleted.

•

Submit a form with the RIS, report period, material type with no sequence number, and
process code D to delete all matching records.

•

Submit a form with the RIS, report period, and process code D to delete the entire
material balance within the reporting dates.

SEQ [sequence number]—All detail lines that contain data must have a sequence number.
Enter a numerical value in sequential order beginning with 1. Do not repeat or skip numbers.
Use columns A and B to enter all numeric data by element and isotope weight. 3
COLUMN A—ELEMENT WEIGHT3
Enter the total element weight of the SNM or source material being reported. For Pu-238
(material type 83), report to the nearest 0.1 gram. Report all other SNM to the nearest gram
and all other source material to the nearest kilogram.
COLUMN B—ISOTOPE WEIGHT3
In the case of enriched uranium or U-233, enter the weight of the isotope U-235 or U-233 to the
nearest whole gram. In the case of plutonium (material type 50), enter the weight of the
isotopes Pu-239 and Pu-241, and in the case of Pu-238 (material type 83), enter the weight of
the isotope Pu-238. For Pu-238, report to the nearest 0.1 gram. For natural or depleted

Round up fractions of 0.5 or greater. If the quantity to be entered is less than 0.5 of the reporting unit, round
down to the next whole reporting unit.

E-7

uranium, enter the weight of the isotope U-235 to the nearest gram. Do not make an entry for
thorium.
8.

BEGINNING INVENTORY—NOT U.S. GOVT-OWNED—Enter the inventory of
non-DOE-owned SNM or source material as of the beginning of business on the first day
of the period covered by the report. The quantities reported on line 9 (columns A and B)
must agree with the reconciled quantities on line 81 of the report submitted for the
previous reporting period.

RECEIPTS
11.

PROCUREMENT FROM DOE—Enter quantities of SNM (or source material) that have
been purchased from the DOE during the reporting period and reported to the NRC on
DOE/NRC Form 741, “Nuclear Material Transaction Report.” This may be done by
listing individual receipts for each individual RIS as reported on DOE/NRC Form 741 or a
total of receipts for each individual RIS during the reporting period. SNM or source
material quantities entered on line 11 are not entered on line 30.

13.

14.

DOD RETURNS—USE A—Leave blank.

15.

DOD RETURNS—USE B—Leave blank.

16.

DOD RETURNS—OTHER USES—Leave blank.

21.

PRODUCTION—Leave blank.

22.

FROM OTHER MATERIALS—Leave blank.

30.

34.

RECEIPTS—MISC—Complete DOE/NRC Form 741 and report the cumulative
miscellaneous receipts (Inventory Change Type (ICT) 34). This requirement includes
nuclear material removed from inventory and then returned to inventory, if not accounted
for elsewhere on this form.

E-8

37.

PROCUREMENT BY OTHERS—Leave blank.

38.

DONATED MATERIAL—FROM U.S. GOVT TO OTHERS—Enter the amount of
DOE-owned material received by donation.

39.

DONATED MATERIAL—FROM OTHERS TO U.S. GOVT—For NRC licensees, leave
blank.

40.

TOTAL—Enter the sums of columns A and B (lines 8 through 39).

REMOVALS
41.

EXPENDED IN SPACE PROGRAMS—Leave blank.

42.

43.

SALES TO OTHERS FOR THE ACCOUNT OF U.S. GOVT—Enter quantities of
DOE-owned SNM or source material that have been sold and converted to non-DOEowned during the reporting period and that have been reported to the NRC on
DOE/NRC Form 741. This may be done by listing individual shipments by RIS as
reported on DOE/NRC Form 741 or a total of shipments to each individual RIS during
the reporting period. (Do not enter SNM or source material quantities on line 51 that
have already been entered on line 43.)

44.

DOD—USE A—Leave blank.

45.

DOD—USE B—Leave blank.

46.

DOD—OTHER USES—Leave blank.

47.

EXPENDED IN U.S. GOVT TESTS—Leave blank.

48.

ROUTINE TESTS—Leave blank.

49.

SHIPPER—RECEIVER DIFFERENCE—Leave blank.

51.

54.

SHIPMENTS—MISC—Complete DOE/NRC Form 741 and report the cumulative
miscellaneous shipments (ICT 54). Possessors reporting under 10 CFR Part 75 should
also include transfers to burials on this line rather than on line 74.

E-9

58.

DONATED MATERIAL—TO U.S. GOVT BY OTHERS—Enter the amount of nonDOE-owned nuclear material that is donated to the U.S. Government and thereby will
become DOE-owned.

59.

DONATED MATERIAL—TO OTHERS BY U.S. GOVT— For NRC Licensees, leave
blank.

65.

ROUNDING ADJUSTMENT—Enter the quantity of nuclear material that is removed (as
a positive number) or added (as a negative number) to the inventory as a result of
rounding.

71.

DEGRADATION TO OTHER MATERIALS—Enter decreases resulting from the
introduction of other material into the material balance being reported. If the decreased
quantity is the result of blending, burnup, or enrichment, identify the balance losing the
material by entering the appropriate code from the list in line 22 above.

72.

DECAY4—Enter the amount of radioactive decay that occurred during the reporting
period for plutonium (material type 50) and Pu-238 (material type 83). If the SNM being
reported is plutonium (material type 50), enter the amount of radioactive decay of the
isotope Pu-241 if the decay is 1 gram or more.
If the SNM being reported is Pu-238 (material type 83), enter the amount of radioactive
decay of the isotope Pu-238 to the nearest 0.1 gram.

73.

FISSION AND TRANSMUTATION—Enter the calculated quantities of SNM lost by
fission and transmutation in a reactor.

74.

NORMAL OPERATIONAL LOSSES/MEASURED DISCARDS—Normal operational
losses and measured discards are materials that have been discarded, whether in the
form of solids, liquids, or gases, as determined by measurement or by estimate on the
basis of measurement.
DOE/NRC Form 741 must account for all materials that leave the inventory through the
process of normal operational losses and measured discards, if not previously reported
in the period covered by this report. To account for these discards, use the established
RIS types described below.
If the material is discarded to a lagoon or pond, append an L to the receiver’s RIS.
Measured discards to the atmosphere or ground should be documented as an onsite
transfer with the licensee’s RIS as shipper and receiver. If the material goes off the
inventory into a holding area (refer to the term “holding account” in the glossary in
Appendix D) for later removal to a burial site, append an H to the receiver’s RIS. When
the material is eventually shipped to a burial site, the transfer series on DOE/NRC
Form 741 will show the shipper’s RIS with an appended H and the appropriate V-series
RIS in the receiver’s block. Alternatively, the licensee may return the material from the
holding account to the primary RIS and then ship the material from the primary RIS.

Round up fractions of 0.5 or greater. If the quantity to be entered is less than 0.5 of the reporting unit, round
down to the next whole reporting unit.

E-10

Such activities must also be documented on DOE/NRC Form 741. Remove discards
from inventory only when the material has been disposed of by (1) transfer to an
authorized recipient or holding area in accordance with 10 CFR Part 40, “Domestic
Licensing of Source Material,” or 10 CFR Part 74, “Material Control and Accounting of
Special Nuclear Material,” (2) authorization under 10 CFR 20.2002, “Method for
Obtaining Approval of Proposed Disposal Procedures,” (3) under the requirements in
10 CFR 20.2003, “Disposal by Release into Sanitary Sewerage”; 10 CFR 20.2004,
“Treatment or Disposal by Incineration”; or 10 CFR 20.1302, “Compliance with Dose
Limits for Individual Members of the Public” (related to concentrations in effluents to
unrestricted areas), or (4) under the requirements in corresponding Agreement State
regulations. Note that the establishment of L or H accounts requires prior NRC
approval.
75.

76.

APPROVED WRITE-OFFS—Leave blank.

77.

INVENTORY DIFFERENCE—Inventory difference (ID) is the difference between
physical inventory and book inventory after the book has been adjusted for all receipts
and removals. A negative entry reports a gain. A positive entry reports a loss.

80.

ENDING INVENTORY—U.S. GOVT OWNED—Enter the ending DOE-owned inventory
as of the end of the last day of the period covered by this report.

81.

ENDING INVENTORY—NOT U.S. GOVT OWNED—Enter the ending non-DOE-owned
inventory as of the last day of the period covered by this report.

82.

TOTAL—Enter the sums of lines 41 through 81. The totals reported on this line must
agree with those on line 40.

83.

BIAS ADJUSTMENT—Leave blank.

Note that the total ending inventories must match the total inventory reported on DOE/NRC
Form 742C for a material type.
Section B, “Foreign Obligations”
This section applies only to licensees that possess foreign obligated nuclear material in their
inventory within a reporting period. It does not apply to licensees that have not possessed or
transferred (received or shipped) foreign obligated material within a reporting period.

E-11

The total amount of foreign obligated nuclear material in inventory as of the end of the reporting
period must be accounted for by material type. It may not exceed the total amount of physical
inventory for a given material type (i.e., a “negative foreign obligations balance”). Facilities
should use special care to avoid a negative foreign obligations balance at the time of facility
reconciliation. The NMMSS may show a negative foreign obligations balance for a facility at
any given time within a material balance period as a result of the delay in reporting shipments
versus receipts; however, the NMMSS will not be able to reconcile a facility for a material
balance period until the foreign obligations at the facility are balanced.
The following column entries are required:
1.

COUNTRY OF OBLIGATION—Enter the unique foreign obligated code for each
category of nuclear material. Appendix C to this NUREG lists the codes. The NMMSS
staff can provide an up-to-date listing.

ISOTOPE WEIGHT—Enter the appropriate isotope weight. For enriched uranium or
U-233, enter the weight to the nearest gram of U-235 or U-233, as appropriate. Do not
make an entry for plutonium.

Section C, “Certification”
SIGNATURE, TITLE, AND DATE—An authorized representative of the licensee shall sign the
report if the licensee submits it as a hard copy. If the licensee submits the report electronically,
it must establish internal procedures to ensure that the information in the report is accurate and
that only the authorized licensee personnel have prepared and issued the report.

E-12

NUREG/BR-0007
Revision 8
Instructions for the Preparation and Distribution of Material Status Reports
(DOE/NRC Forms 742 and 742C) - FINAL

Mirabelle Shoemaker

August

2020

Technical

Division of Fuel Management
Office of Nuclear Material Safety and Safeguards
U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001

Same as above.

U.S. Nuclear Regulatory Commission (NRC) regulations require each licensee who is authorized to
possess special nuclear material (SNM) or obligated source material to prepare and submit, in computerreadable format, reports concerning SNM received, produced, possessed, transferred, consumed,
disposed of, or lost. This NUREG contains the reporting instructions for licensees to follow in making
these reports.

Material Control and Accounting
Nuclear Materials Management and Safeguards System (NMMSS)
Form 742
Form 742C
Material Balance Reports

NUREG/BR-0007, Rev. 8
Final

Instructions for the Preparation and Distribution of Material Status Reports

August 2020

File Type	application/pdf
File Modified	2020-09-04
File Created	2020-08-20