NUREG BR 0007 Rev 7 May 4 2018

DOE/NRC Form 742, Material Balance Report, and NUREG/BR-0007, Instructions for the Preparation and Distribution of Material Status Reports

NUREG BR 0007 Rev 7 May 4 2018

OMB: 3150-0004

⚠️ Notice: This form may be outdated. More recent filings and information on OMB 3150-0004 can be found here:

2023-12-14 - Extension without change of a currently approved collection

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NUREG/BR-0007, Rev. 7

Instructions for the
Preparation and
Distribution of Material
Status Reports
(DOE/NRC Forms 742 and 742C)
Effective Date: May 4, 2018

Office of Nuclear Material Safety and Safeguards

ABSTRACT
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
computer-readable 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.
Paperwork Reduction Act Statement
The information collections contained in this NUREG are covered by Department Of Energy
(DOE)/NRC Forms 742 and 742C, which the Office of Management and Budget (OMB) approved
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 information is required by NRC to fulfill its
safeguards responsibilities, bilateral agreements, and responsibilities as a participant in the
US/IAEA Safeguards Agreement. Send comments regarding burden estimates to the
Information Services Branch (T-5 F53), U.S. Nuclear Regulatory Commission, Washington, DC
20555-0001, or by email to [email protected], 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
ABBREVIATIONS .................................................................................................................... vii
1

INTRODUCTION...................................................................................................................1
1.1

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

1.2

Regulatory Authority ..................................................................................................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

INSTRUCTIONS FOR COMPLETING DOE/NRC FORM 742,
“MATERIAL BALANCE REPORT” ......................................................................................7
2.1

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

2.2

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

2.3

Section C, “Certification” ..........................................................................................14

INSTRUCTIONS FOR COMPLETING DOE/NRC FORM 742C,
“PHYSICAL INVENTORY LISTING” ..................................................................................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

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

APPENDIX D

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

APPENDIX E

SUPPLEMENTAL INSTRUCTIONS FOR POSSESSORS OF NUCLEAR
MATERIAL OUTSIDE FACILITIES REPORTING PURSUANT TO THE
MODIFIED SMALL QUANTITIES PROTOCOL (INFCIRC/366)................E-1

NUREG/BR-0007, Rev. 7

ABBREVIATIONS
A

addition to inventory

beginning inventory

CFR

Code of Federal Regulations

DOD
DOE

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

ending inventory

facility attachment

IAEA
ICR
ICT
ID
IDC

International Atomic Energy Agency
inventory change report
inventory change type
inventory difference

MBA
MBR
MUF

material balance area
material balance report
material unaccounted for

NMMSS
NRC

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

PIL
Pu

physical inventory list
plutonium

R
RA
RIS

removal from inventory
rounding adjustment
reporting identification symbol

SAMS
SNM

Safeguards Management Software
special nuclear material

TFA

transitional facility attachment

U
U.S. GOVT

uranium
United States Government

vii

NUREG/BR-0007, Rev. 7

U.S. NUCLEAR REGULATORY COMMISSION
INSTRUCTIONS FOR THE PREPARATION AND DISTRIBUTION OF
MATERIAL STATUS REPORTS
DOE/NRC FORMS 742, “MATERIAL BALANCE REPORT,” AND
742C, “PHYSICAL INVENTORY LISTING”
1 INTRODUCTION
The U.S. Nuclear Regulatory Commission (NRC) and the U.S. Department of Energy (DOE)
jointly use a Nuclear Materials Management and Safeguards System (NMMSS). This system is
the U.S. national database used by DOE and NRC for tracking certain nuclear material.
Common reporting forms and formats are used to minimize the reporting burden on licensees 1
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. Compliance with specific reporting
requirements is monitored by the agency that requires the specific data. NRC regulations
require that licensees submit the reports in computer-readable form. A licensee may use any
blank blocks on the paper DOE/NRC forms for other business purposes.
DOE requires all NRC licensees to report to the NMMSS all receipts, transfers, and inventories
of U.S. Government-owned, loaned, or leased material in their possession. Licensees must file
a DOE/NRC Form 742, “Material Balance Report,” and a DOE/NRC Form 742C, “Physical
Inventory Listing,” to report quantities of 0.5 or greater of the reporting unit specified in DOE
Orders Series 470 (DOE Order 470.4, “Safeguards and Security Program,” and DOE M 470.4-6,
“Nuclear Material Control and Accountability”).

1.1 Material Status Reports
DOE/NRC Forms 742 and 742C are the means for submitting material balance and inventory
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. Instructions for creating the
computer-readable submittal appear in NMMSS Report D-24, “Personal Computer Data Input
for NRC Licensees.”
Licensees use DOE/NRC Form 742 to report a summary of activity for a specified material
within a given time period. The report conveys activities such as the beginning balance,
shipments and receipts involving other facilities, how much material has decayed, how material
has been downblended, and the ending balance. This information is useful to validate a
facility’s ending inventory.
Licensees use DOE/NRC Form 742C to report a facility’s inventory as of a specified date. The
report lists, for each material type category, the amount of material in the facility’s possession or
1

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

NUREG/BR-007, Rev. 7

in transit to the facility at the time of the inventory process. 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 accepts the data after they are verified as acceptable within the
restrictions of the system.

1.2 Regulatory Authority
NRC regulations require each licensee who possessed during a reporting period special nuclear
material (SNM) in a quantity totaling 1 gram or more of contained uranium (U)235, U233, or
plutonium to prepare and submit in computer-readable format reports concerning SNM
received, produced, possessed, transferred, consumed, disposed of, or lost. The reporting
periods for facilities subject to Title 10, Section 74.51, “Nuclear Material Control and Accounting
for Strategic Special Nuclear Material,” of the Code of Federal Regulations (10 CFR 74.51) are
October 1 to March 31 and April 1 to September 30 of each year. These reports must be filed
within 30 days of the end of the period covered by the report, unless the NRC authorizes an
alternate date. Reports for facilities subject to 10 CFR 74.19(c), 10 CFR 74.31(c)(5),
10 CFR 74.33(c)(4), or 10 CFR 74.33(c)(6) are to be made and filed within 60 days of beginning
the physical inventory, unless the NRC authorizes an alternate date. If licensees are reporting
pursuant to 10 CFR Part 75, “Safeguards on Nuclear Material—Implementation of U.S./IAEA
Agreement,” they are to dispatch reports as soon as possible but no later than 30 days from the
start of the physical inventory taken as part of the licensee’s material control and accounting
procedures. All other licensees, including those subject to 10 CFR 150.17, “Submission to
Commission of Source Material Reports,” shall submit a report no later than March 31 of each
year.
Licensees must complete a separate DOE/NRC Form 742 and 742C for each material type (E1,
E2, E3, E4, 50, 70, 83, and 89) of SNM for which a reportable quantity is possessed or a
reportable inventory change has occurred during the 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.
Each Federal or State licensee that possessed during a reporting period 1 kilogram or more of
foreign obligated source material (material types 10, 81, and 88) must submit a statement of
foreign obligated source material inventory. DOE/NRC Form 742 may be used. The reporting
period is October 1 to September 30 of each year (unless the NRC authorizes an alternate
period). The reports must be filed as specified in facility attachments (FAs) if the licensee is
reporting pursuant to 10 CFR Part 75 for all source material and SNM.
In addition, each licensee that possesses, or that had possessed in the previous reporting
period, 1 kilogram or more of uranium or thorium source material pursuant to the operation of
enrichment services, downblending uranium that has an initial enrichment of the U235 isotope of
10 percent or more, or the fabrication of mixed-oxide fuels shall complete and submit DOE/NRC
Forms 742 and 742C for all source material that the licensee has received, produced,
NUREG/BR-007, Rev. 7

possessed, transferred, consumed, disposed of, or lost. These reports are to be submitted
within 30 days of September 30 of each year or with the licensee’s annual material balance
reports required under 10 CFR Part 72, “Licensing Requirements for the Independent Storage
of Spent Nuclear Fuel and High-Level Radioactive Waste, and Reactor-Related Greater than
Class C Waste”; 10 CFR Part 74, “Material Control and Accounting of Special Nuclear Material”;
and 10 CFR Part 150, “Exemptions and Continued Regulatory Authority in Agreement States
and in Offshore Waters under Section 274.”
SNM and source reports shall be submitted for each reporting identification symbol (RIS)
account, including all holding accounts.
Refer to DOE Orders 470.4 and DOE M 470.4-6 for U.S. Government-owned material holdings.

1.3 Preparation and Submission of DOE/NRC Forms 742 and 742C in ComputerReadable 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) is a miniature version of the NMMSS. This software allows the user to import and
export data; make edit checks; generate various reports; and create material balance, inventory
data, 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 operator free of charge.
All reporting forms must include proprietary information when necessary to provide an adequate
response. An application to withhold such information from public disclosure may be made, and
will be disposed of, in accordance with the provisions of 10 CFR 2.390, “Public Inspections,
Exemptions, Requests for Withholding.” If any of this information is of particular sensitivity, the
licensee may request that the information not be physically transmitted to the International
Atomic Energy Agency (IAEA). Such a request must refer to, and conform with, 10 CFR 75.12,
“Communication of Information to IAEA.”
Licensees can submit data to the NMMSS via the following three methods:
(1)

Telephonic Transfers to the NMMSS
A licensee may submit DOE/NRC Forms 742 and 742C electronically by using a
modem. To establish an electronic connection with the NMMSS, licensees must contact
the NMMSS security officer to request the establishment of a connection with the direct
link. If the facility is a valid facility for the type of link requested (classified or
unclassified), the security officer will provide the requester with the appropriate forms to
complete.
Upon receipt of the completed forms, the security officer will create a user identification
and password and establish an account for the facility. The user identification and
password will then be forwarded to the user facility along with a password
acknowledgment form. The licensee will sign the acknowledgment form and return it to
the security officer, who will then activate the user identification and password.
3

NUREG/BR-0007, Rev. 7

(2)

Data Submittals on Computer Media
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.

(3)

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 operator’s
program administrator.

1.4 Documentation and Distribution
The completed DOE/NRC Forms 742 and 742C must be submitted to the NMMSS operator.
Before submitting data, licensees should confirm the address of the NMMSS and the method of
providing data by calling the NMMSS operator. Note that 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 it be withheld as defined by 10 CFR 2.390. 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 a decision to classify,
declassify, or make any change in previously submitted guidance. When submitting Safeguards
Information, licensees should also submit a Concise Note Form 740M stating that the
submission is Safeguards Information and should be handled in accordance with 10 CFR 73.21,
“Requirements for the Protection of Safeguards Information.”
Licensees should distribute the completed report as follows:

•

Submit one copy of the completed report and all supporting subschedules and lists to
the NMMSS. All RIS holders are encouraged to review their RIS information yearly and
notify the NMMSS that the data are correct or make changes.

•

Retain one copy for licensee files.

1.5 Reconciliation
Every reporting period, a reconciliation shall be performed between the data the licensee has
reported to the NMMSS and the projected balances that the NMMSS has developed. The
NMMSS operator provides reports of generated balances. This process shall be considered
complete when the licensee resolves any differences between the reported and the generated
NUREG/BR-0007, Rev. 7

balances, including those listed for foreign obligated materials. The reconciliation should be
completed within 30 calendar days of when the licensee was notified of the discrepancy, and it
should include all accounts held by the licensee, including holding accounts.
Facilities should ensure that their weight totals in DOE/NRC Form 742C equal the weight totals
in 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.
Generally, 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 such issues as rounding because of different units
of measurement/reporting, then the site should submit a concise note explaining the difference.

NUREG/BR-0007, Rev. 7

2 INSTRUCTIONS FOR COMPLETING DOE/NRC FORM 742,
“MATERIAL BALANCE REPORT”
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 to be completed by licensees.
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—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
83 2
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
U233
Normal uranium
Plutonium (Pu)238
Thorium
Uranium in cascade

Report as Pu238 if the contained Pu238 is greater than 10 percent of total plutonium by weight. Otherwise,
report as plutonium.

NUREG/BR-0007, Rev. 7

2.1 Section A, “Material Accountability”
PROCESS CODE—Enter process code 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:
•

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.

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 WEIGHT 3
Enter the total element weight of the SNM or source material being reported. If Pu238, report to
the nearest 0.1 gram. Report all other SNM to the nearest gram and all other source material to
the nearest kilogram.
Optionally, if using XML format, source material may be reported to three decimal places;
however, both shipper and receiver must report to the same decimal place. If reporting to three
decimal places, the reporting unit is to the nearest thousandth of a kilogram. For example, both
the shipper and receiver may report 1655 grams as 1.655 kilograms. However, for consistency,
the licensee must continue to report to the same decimal place for that material type. If at any
time during the stated material balance period, source material has been reported to the third
3

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.

NUREG/BR-0007, Rev. 7

decimal on a transaction, the corresponding material balance report must be reported to the
same decimal place for consistency.
COLUMN B—ISOTOPE WEIGHT3
In the case of enriched uranium or U233, enter the weight of the isotope U235 or U233 as
appropriate; in the case of plutonium, enter the weight of the isotopes Pu239 and Pu241, and in
the case of Pu238, enter the weight of the isotope Pu238. If Pu238, report to the nearest 0.1 of a
gram. If depleted uranium, enter the weight of the isotope U235 to the nearest kilogram. Make
no entry for other source material.
8.

BEGINNING INVENTORY—U.S. GOVT-OWNED—Enter the inventory of
U.S. Government-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 (ENDING
INVENTORY) of the report submitted for the previous reporting period.

BEGINNING INVENTORY—NOT U.S. GOVT-OWNED—Enter the inventory of SNM or
source material that is not owned by the U.S. Government 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 (ENDING
INVENTORY) 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, “Nuclear Materials 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.

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 U233 produced in the
fuel and/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 U233 produced
was removed or discharged from the reactor during this reporting period, enter the
discharged quantity on line 21 directly after the word “Production.”
9
NUREG/BR-0007, Rev. 7

Uranium mines and mills should account for uranium mined/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 balance supplying the material by entering
the appropriate inventory change type (ICT) code from the following list:
EN
ED
NE
ND
DE
DN
EE

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).
Enrichment facilities not subject to 10 CFR Part 75 requirements may enter 22 to
indicate a change type or as directed by the NRC. This can be any combination of
material types (10, 20, 81, and 89), but it must be reported on each corresponding form
for each material type.
30.

RECEIPTS REPORTED TO NRC ON DOE/NRC 741 (NOT LISTED ELSEWHERE)—
Enter the SNM or source material received from others and reported on DOE/NRC
Form 741 and 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.—Complete a DOE/NRC Form 741 reporting the cumulative
miscellaneous receipts (ICT 34). This requirement includes nuclear material removed
from inventory but now returned to inventory, if not accounted for elsewhere.

37.

PROCUREMENT BY OTHERS—Leave blank.

38.

DONATED MATERIAL—FROM U.S. GOVT TO OTHERS—Enter the amount of material
received as a donation from the U.S. Government.

39.

DONATED MATERIAL—FROM OTHERS TO U.S. GOVT—Enter the amount of material
received as a donation by others to the account of the U.S. Government.

40.

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

REMOVALS
41.

EXPENDED IN SPACE PROGRAMS—Leave blank.

NUREG/BR-0007, Rev. 7

42.

SALES TO U.S. GOVT—Enter quantities of SNM or source material that have been sold
to the U.S. Government 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. (SNM or source material quantities entered on line 42 are not
entered on line 51.)

43.

SALES TO OTHERS FOR THE ACCOUNT OF U.S. GOVT—Enter quantities of SNM
that have been sold for the account of the U.S. Government 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. (SNM or source material
quantities entered on line 43 are not entered on line 51.)

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 DOE/NRC 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.—A DOE/NRC Form 741 reporting the cumulative miscellaneous
shipments (ICT 54) must be completed. Facilities reporting pursuant to 10 CFR Part 75
should also include transfers to burials on this line rather than on line 74.

58.

DONATED MATERIAL—TO U.S. GOVT BY OTHERS—Enter the amount of nuclear
material removed by a donation to the U.S. Government.

59.

DONATED MATERIAL—TO OTHERS BY THE U.S. GOVT—Enter the amount of
nuclear material removed from a U.S. Government account by donation to others.

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 activities encountered by the licensee.

71.

DEGRADATION TO OTHER MATERIALS—Enter decreases resulting from the
introduction of other material into the material balance being reported. If the decreased
11

NUREG/BR-0007, Rev. 7

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.

DECAY 4—Enter the amount of radioactive decay that occurred during the reporting
period for plutonium and Pu238. When the SNM being reported is plutonium (material
type 50), enter the amount of radioactive decay of the isotope Pu241 if the decay is 1
gram or more.
When the SNM being reported is Pu238, enter the amount of radioactive decay of the
isotope Pu238 if the decay is 0.1 gram or more.

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 material that has been discarded, whether in the form
of solids, liquids, or gases, as determined by measurement or by estimate on the basis
of measurement.
All material that leaves the inventory through the process of normal operational
losses/measured discards must be accounted for on a DOE/NRC Form 741 (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 discard is 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 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 the DOE/NRC Form 741 will
show the shipper’s RIS with an H appended 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. Such
activities must also be documented on DOE/NRC Form 741. Remove discards from
inventory only when the material has been disposed of (a) by transfer to an authorized
recipient or holding area as provided in the regulations in 10 CFR Part 40, “Domestic
Licensing of Source Material,” or 10 CFR Part 74, (b) as authorized pursuant to
10 CFR 20.2002, “Method for Obtaining Approval of Proposed Disposal Procedures,”
(c) as provided 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 (d) as provided in corresponding
Agreement State regulations. Note that the establishment of L or H accounts requires
prior NRC approval.

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.

NUREG/BR-0007, Rev. 7

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 (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.
Reactors should not report an ID 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) are explainable and should be reported as such.

80.

ENDING INVENTORY—U.S. GOVT-OWNED—Enter the ending inventory that is owned
by the U.S. Government 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 inventory that is
not owned by the U.S. Government 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—The ID bias adjustment is that quantity of material that should be
added to or subtracted from the ID quantity on line 77 to produce the best estimate of an
unbiased ID. The adjustment represents the algebraic summation of the impact of
measurement system biases on each component of the measured plant material
balance. Include on this line the sum of the bias adjustments for the ID for the current
period. This line should also include any prior period adjustments. Do not include bias
adjustments that have already been applied to the source data in the material balance
equation.
Note that the total ending inventories must match the total inventory reported on
DOE/NRC Form 742C for a material type.

NUREG/BR-0007, Rev. 7

2.2 Section B, “Foreign Obligations”
The total amount of obligated nuclear material on hand as of the end of the reporting period
must be accounted for by material type. It may not exceed the physical inventory.
The following column entries are required:
1.

COUNTRY OF OBLIGATION—Enter the unique obligated code for each category of
nuclear material. Appendix C lists the codes. The NMMSS operator can provide an
updated listing.

ELEMENT WEIGHT—Enter the element weight (plutonium, uranium, or thorium) of the
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; if enriched uranium or U233,
enter weight to the nearest gram of U235 or U233, as appropriate. If plutonium, make no
entry.

TOTAL WEIGHT—Enter the totals for columns 2 and 3. These totals represent the total
obligated material at the facility. The total weight of 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 submitted as a hard copy. If submitted electronically, each licensee must establish
internal procedures to ensure that the information provided in the report is accurate and that
only the authorized licensee personnel have prepared and issued the report.

NUREG/BR-0007, Rev. 7

3 INSTRUCTIONS FOR COMPLETING DOE/NRC FORM 742C,
“PHYSICAL INVENTORY LISTING”
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, one for licensees required to report pursuant to
10 CFR 74.13, “Material Status Reports,” or 10 CFR 150.17 and the other 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 to be
completed by licensees on DOE/NRC Form 742C. Source material with no foreign obligation
and that is not used in enrichment services, downblending of uranium that has an initial
enrichment of U235 of 10 percent or more, or 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
key measurement point
measurement basis
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 discrete item contains more than one
material (e.g., irradiated fuel containing both uranium and plutonium); in this case, use a
15

NUREG/BR-0007, Rev. 7

separate line for the data for each material, and enter on the first line all data common to
all materials in the batch.
5a.

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

5b.

COMPOSITION/FACILITY (COMP/FAC) CODE—Enter the appropriate code from the
following table.
CODE 5
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.—Make no entry unless reporting U.S. Government-owned
material. See DOE Orders Series 470 for guidance.

5f.

SCRAP PROGRAM—Leave blank.

5g.

WEIGHT PERCENT ISOTOPE—Leave blank.

See Appendix A of this document for more detailed code instructions. Enrichment facilities not subject to the
requirements in 10 CFR Part 75 are authorized to continue using the inventory composition codes that the
NRC has authorized for use.

NUREG/BR-0007, Rev. 7

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 from the list below:
G
J

U.S. Government-owned
Not U.S. Government-owned

Refer to the glossary in Appendix D of this document for further description of
U.S. Government-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 required. The licensee can use this block as desired.

5k.

NO. OF ITEMS—No entry required. The licensee can use this block as desired.

5l.

KEY MEASUREMENT POINT—Leave blank.

5m.

MEASUREMENT I.D.—Leave blank.

5n.

ENTRY STATUS—Leave blank.

5o.

MATERIAL BALANCE AREA (MBA)—Leave blank.

5p.

SITE IDC—Leave blank.

5q.

PROCESS CODE—Enter process code 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:
•

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.

NUREG/BR-0007, Rev. 7

•

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. These total elemental and
isotopic weights must agree with the sum of the quantities entered on lines 80 and 81 on
the DOE/NRC Form 742 for each individual material type being reported.

SIGNATURE—An authorized representative of the licensee shall sign the report, if
submitted as hard copy. Otherwise, each licensee must establish internal procedures to
ensure that the information provided in the report is accurate and that only authorized
licensee personnel have prepared and issued the report.

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 document.
Refer to DOE Order 470.4 and DOE M 470.4-6 for U.S. Government-owned material holdings.
Reporting data for U.S. Government-owned inventory in an expanded level of detail to comply
with DOE reporting requirements also meets the NRC’s inventory reporting requirements. The
total of U.S. Government-owned inventory on which inventory data are reported must agree with
the quantity entered on line 80 (ENDING INVENTORY—U.S. GOVT-OWNED) on DOE/NRC
Form 742.

3.2 Licensees Reporting Under 10 CFR Part 75
The instructions in this section apply only to facilities that the NRC has notified by letter, as
provided in 10 CFR 75.11, “Installation Information,” that they have been identified under the
U.S./IAEA Safeguards Agreement. Facilities that are required to submit initial inventory reports
under 10 CFR 75.32, “Initial Inventory Report,” and for which a physical inventory is not
performed shall prepare DOE/NRC Form 742 according to the instructions in Section 2.1,
completing lines 2, 3, 4, 80, 81, and 82. The information in the initial inventory report may be
based upon the licensee’s book record. Facilities reporting under this section must file
subsequent material balance reports based upon a physical inventory and are required to attach
a completed DOE/NRC Form 742C. Such reports are required with respect to each physical
inventory taken as part of the material control and accounting procedures required by
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.
After completion of DOE/NRC Form 742C, the licensee should prepare the submittal in
computer-readable format following the instructions in NMMSS Report D-24.
NUREG/BR-0007, Rev. 7

The following numbered instructions correspond to the numbered blocks or columns to be
completed by licensees on the physical inventory listing:
1.

NAME AND ADDRESS—Leave blank.

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

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
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. 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 on the first line all data
common to all materials in the batch entered.
5a.

MATERIAL TYPE—Enter the appropriate SNM type code, as follows:
CODE
10
20 6
50

DESCRIPTION
Depleted uranium
Enriched uranium
Plutonium

If reporting enriched uranium (material type 20), enter the appropriate enrichment level code in lieu of 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

NUREG/BR-0007, Rev. 7

70
81
83
88
89

U233
Normal uranium
Pu238
Thorium
Uranium in cascade

5b.

COMPOSITION/FACILITY (COMP/FAC) CODE—Enter the appropriate code from the
list developed during the formulation and negotiation of the FA or transitional facility
attachment (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
document).

5d.

ISOTOPE WEIGHT—Enter the isotope weight. If enriched uranium or U233, enter the
weight to the nearest gram of U235 or U233, as appropriate. If plutonium, enter the sum of
Pu239 and Pu241 to the nearest gram. If Pu238, enter the weight of the isotope Pu238 to the
nearest 0.1 gram. For depleted uranium, enter the U235 isotope weight to the nearest
kilogram. Make no entry for other source material.
Optionally, if using XML format, source material may be reported to three decimal
places; however, both shipper and receiver must report to the same decimal place. If
reporting to three decimal places, the reporting unit is to the nearest thousandth of a
kilogram. For example, both the shipper and receiver may report 1655 grams as 1.655
kilograms. However, the licensee must continue to report to the same decimal place for
consistency.

5e.

DOE PROJECT NO.—Make no entry unless reporting U.S. Government-owned
material. See DOE Order Series 470 for guidance.

5f.

SCRAP PROGRAM—Make no entry unless reporting U.S. Government-owned material.
See DOE Order Series 470 for guidance.

5g.

WEIGHT PERCENT ISOTOPE—Enter the weight percent of the isotope U235 if uranium
enriched or depleted in U235. If plutonium, enter the weight percent of the isotope Pu240.
If Pu238, enter the weight percent of the isotope Pu238. Report weight percent to at least
two, but not more than four, decimal places, depending on the accuracy of the
measurement method (for example, XX.XXXX%). For U233, enter the parts per million of
U232. 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 from the list below:
G
J

U.S. Government-owned
Not U.S. Government-owned

Refer to the glossary in Appendix D of this document for further description of
U.S. Government-owned material.
NUREG/BR-0007, Rev. 7

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 hexafluroide cylinder), 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.

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 MEASUREMENT 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.

MEASUREMENT BASIS—Enter the pertinent code from the following:
•

N is used if batch data are based on measurements made in an IAEA MBA (RIS)
other than the reporting MBA (RIS).

•

L is used if batch data are based on measurements made in another IAEA MBA
(RIS) and have been previously reported by the reporting MBA (RIS) in a
DOE/NRC Form 741 or a DOE/NRC Form 742C.

•

M is used if batch data are based on measurements made in the reporting IAEA
MBA (RIS) and the data were not previously reported.

•

T is used if batch data are based on measurements in the reporting IAEA MBA
(RIS) and have been previously reported for that MBA (RIS) in a DOE/NRC
Form 741 or 742C.

5m2.

OTHER MEASUREMENT POINT—If the batch data are based on measurements made
at a different key measurement point from the one specified above, enter the
identification of the key measurement point at which the measurements were made.

5m3.

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

5n.

ENTRY STATUS—Enter N (for New entry).

5o.

MBA—Leave blank.

5p.

SITE IDC—Leave blank.

NUREG/BR-0007, Rev. 7

5q.

PROCESS CODE—Enter process code 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:.
•

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
submitted as hard copy. Otherwise, each licensee must establish internal procedures to
ensure that the information provided in the report is accurate and that only authorized
licensee personnel have prepared and issued the report.

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).

NUREG/BR-0007, Rev. 7

APPENDIX A
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. Use code 864 to report
excess, spare, or transiently used fuel elements.
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 also for spent fuel in dry storage.
862

In Conversion and Fabrication Processes

Enter this code for SNM or source material in conversion or fabrication processes that change
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
also to reflect uranium within an enrichment plant (i.e., cascade).
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).
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.
865

Unirradiated Scrap Awaiting Recovery

Enter this code for SNM or source material in unirradiated scrap material that is awaiting inhouse or offsite recovery.
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.
899

Inventory Total Line

Enter the cumulative total reported for a given material type.

A-1

NUREG/BR-0007, Rev. 7

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

B-1

NUREG/BR-0007, Rev. 7

B-2

B-3

NUREG/BR-0007, Rev. 7

APPENDIX C
OBLIGATION CODES

Material Balance Code

Obligation Entity

Australia

Canada

EURATOM1

Japan

People’s Republic of China

Russia

Switzerland

Argentina

Brazil

Chile

India

Republic of Korea

Taiwan

Vietnam, Socialist Republic of

Japan/Russia

EURATOM/Russia

Australia/Japan/Russia

Canada/Japan/Russia

EURATOM/Japan/Russia

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

EURATOM comprises 28 member states: Austria, Belgium, Bulgaria, Croatia, Cyprus, 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 UK.

C-1

NUREG/BR-0007, Rev. 7

Australia/Canada

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

Note: Updated information on valid obligations codes is available from the NMMSS staff.

NUREG/BR-0007, Rev. 7

C-2

APPENDIX D
GLOSSARY

GLOSSARY
Accountability—The determination of, and current record maintenance of, special nuclear
material and source material quantities associated with transfers, measured discards,
inventories, and inventory differences 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 under which the State regulates the use of byproduct, source, and small quantities
of special nuclear material 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—Additional nuclear material transaction, material balance, or inventory data
supplied, in free text format, by facilities engaged in the import and/or export of nuclear
materials, by facilities selected under the provisions of the agreement between the United
States and the International Atomic Energy Agency (IAEA) for the application of safeguards in
the U.S./IAEA Safeguards Agreement, any facility that would like to transmit any additional
explanatory nuclear material information.
EURATOM—As of January 2008, an organization consisting of member countries Austria,
Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany,
Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Poland,
Portugal, Romania, the Slovak Republic, Slovenia, Spain, Sweden, and the United Kingdom.
Foreign obligated nuclear material—Source material or special nuclear material that is
subject to the terms and conditions of an agreement that the U.S. Government has entered into
with another government or group of governments.
Highly enriched uranium (HEU)—Uranium enriched to 20 percent or greater in the isotope
uranium-235.
Holding account—Typically identified by four-character reporting identification symbols (RISs)
ending in the letter H assigned by the U.S. Nuclear Regulatory Commission. Some enrichment
facilities have holding accounts identified by three-character RISs beginning with the letter V.
Regardless of the RIS, these accounts usually acquired inventory from the shipment of licensed
material from the primary RIS in use at the licensee. Typically, a small number of 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 (ID)—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.
D-1

NUREG/BR-0007, Rev. 7

Mathematically, ID can be expressed as:
ID = (BI + A - R) - EI
where (BI + A - R) is the book inventory.
Inventory reconciliation—The adjustment of the book record quantity of both elements and
fissile isotopes to reflect the results of a physical inventory. In a broad sense, inventory
reconciliation involves the activities of calculating (1) the inventory difference (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 and/or prior period adjustment
associated with the ID value.
Low-enriched uranium (LEU)—Uranium enriched below 20 percent in the isotope uranium235.
Material balance period—The time span to which a material or physical inventory pertains.
Nuclear Materials Management and Safeguards System (NMMSS)—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 U.S. Department of
Energy and the U.S. Nuclear Regulatory Commission and those licensees 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.
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 determined 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 special nuclear material.
Report Period—Period inclusive of defined dates (e.g., October 1, 2005, through
September 30, 2006). Reports for a reporting period, such as inventory, material balance, and
related transactions reports, must assure that no dates are undocumented between the
previous and current submittals.

NUREG/BR-0007, Rev. 7

D-2

Reporting identification symbol (RIS)—A unique combination of three or four letters that is
assigned to each reporting organization by the U.S. Nuclear Regulatory Commission for the
purpose of identification in the Nuclear Materials Management and Safeguards System
database.
Shipper-receiver difference—The difference between what a shipper claims a shipment of
special nuclear material contained and what the receiver claims it received, where both the
shipper’s and receiver’s values are based on measurement.
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 special nuclear material.
Special nuclear material (SNM)—Plutonium, uranium-233, and uranium enriched in the
isotope 233 or 235.
U.S. Government owned—Nuclear material that, while used by a licensee as part of its
activities, is actually an asset owned by a Federal government agency such as the U.S.
Department of Energy (DOE). These materials may be bulk materials, discrete radiation
sources, or finished products. Such materials may represent a lease or loan arrangement with
a Government agency. U.S. Government-owned materials are typically represented by an
owner code of G on shipping information (i.e., DOE/U.S. Nuclear Regulatory Commission
(NRC) Form 741) and inventory documentation (i.e., DOE/NRC Forms 742 and 742C). One
way a licensee determine whether nuclear material in its possession is U.S. Government owned
is to review the licensee’s DOE/NRC Form 741 documentation listing the original receipt of the
material. If such material is U.S. Government owned, it will have an owner code of G entered
on the licensee’s portion of the form.

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NUREG/BR-0007, Rev. 7

APPENDIX E
SUPPLEMENTAL INSTRUCTIONS FOR POSSESSORS OF NUCLEAR
MATERIAL OUTSIDE FACILITIES REPORTING PURSUANT TO THE
U.S.-IAEA CARIBBEAN TERRITORIES SAFEGUARDS AGREEMENT
MODIFIED SMALL QUANTITIES PROTOCOL (INFCIRC/366) ON
DOE/NRC FORMS 742C AND 742

SUPPLEMENTAL INSTRUCTIONS FOR POSSESSORS OF NUCLEAR
MATERIAL OUTSIDE FACILITIES REPORTING PURSUANT TO THE
U.S.-IAEA CARIBBEAN TERRITORIES SAFEGUARDS AGREEMENT
MODIFIED SMALL QUANTITIES PROTOCOL (INFCIRC/366) ON
DOE/NRC FORMS 742C AND 742
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). 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
IAEA. Nuclear material, by IAEA definition, includes all uranium, plutonium, and thorium
holdings in the relevant territories in any chemical and/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 via information collected in concert with the regulations contained in
10 CFR Part 75, “Safeguards on Nuclear Material—Implementation of US/IAEA Agreement.”
This section provides instruction for licensees reporting inventory under 10 CFR 75.32, “Initial
Inventory Report,” and 10 CFR 75.35, “Material Status Reports,” pursuant to INFCIRC/366.
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. Nuclear material outside facilities means nuclear
material which is not in a facility, and is customarily used in amounts of one effective
kilogram or less. 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 according to the instructions in Section 2.1, “Instructions for Completing DOE/NRC Form
742C, ‘Physical Inventory Listing.’” 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 according to the instruction in Section 2.2, “Instructions for Completing
DOE/NRC Form 742, ‘Material Balance Report.’” Such reports are required with respect to
each physical inventory taken as part of the material control and accounting procedures
required by 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 (FA) for possessors, which the NRC will provide to applicable licensees required to
report pursuant 10 CFR 75.
Nuclear Material Management and Safeguards System (NMMSS) Report D-24 provides
instructions and examples for the preparation of required electronic submittals to the NMMSS.

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NUREG/BR-007, Rev. 7

2.1. Instructions for Completing DOE/NRC Form 742C, “Physical Inventory Listing”
The following numbered instructions correspond to the numbered blocks or columns to be
completed by the possessors 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
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. All batches that contain a known weight of nuclear material, even if
the element or isotope weight rounds to zero reportable units, is to be reported. A
concise note (Form 740M) shall be submitted to provide the actual measurement for any
batch that rounds to zero reportable units.

NUREG/BR-0007, Rev. 7

E-2

5a.

MATERIAL TYPE—Enter the appropriate special nuclear material (SNM) type code, as
follows:
CODE
10
20 1
50
70
81
83
88
89

DESCRIPTION
Depleted uranium
Enriched uranium
Plutonium
U233
Normal uranium
Pu238
Thorium
Uranium in cascade

5b.

COMPOSITION/FACILITY (COMP/FAC) CODE—Enter the appropriate code from the
list provided in the facility attachment.

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 2.2 of this
appendix).

5d.

ISOTOPE WEIGHT—Enter the isotope weight. If enriched uranium or uranium-233
(U233), enter the weight to the nearest gram of uranium-235 (U235) or U233, as appropriate.
If plutonium, enter the sum of plutonium-239 (Pu239) and plutonium-241 (Pu241) to the
nearest gram. If plutonium-238 (Pu238), enter the weight of the isotope Pu238 to the
nearest 0.1 gram. For natural and depleted uranium, enter the U235 isotope weight to the
nearest gram, reporting to three decimal places. Make no entry for other source
material.

5e.

DOE PROJECT NO.—Make no entry unless reporting U.S. Government-owned
material. See DOE Order Series 470 for guidance.

5f.

SCRAP PROGRAM—Make no entry unless reporting U.S. Government-owned material.
See DOE Order Series 470 for guidance.

5g.

WEIGHT PERCENT ISOTOPE—Enter the weight percent of the isotope U235 if uranium
enriched or depleted in U235. If plutonium, enter the weight percent of the isotope
plutonium-240 (Pu240). If Pu238, enter the weight percent of the isotope Pu238. Report
weight percent to at least two, but not more than four, decimal places, depending on the
accuracy of the measurement method (for example, “XX.XXXX%”). For U233, enter the

If reporting enriched uranium (material type 20), enter the appropriate enrichment level code in lieu of 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

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NUREG/BR-007, Rev. 7

parts per million of uranium-232 (U232). For depleted uranium with an enrichment of
0.5 percent or less, if enrichment is unknown enter “0.3%”. 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 from the list below:
G
J

U.S. Government-owned
Not U.S. Government-owned

Refer to the glossary in Appendix D to this document for further description of
U.S. Government-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.

5k .

5l.

KEY MEASUREMENT POINT— Enter the appropriate code from the list provided in the
facility attachment.

5m.

MEASUREMENT I.D.— Enter the appropriate code from the list provided in the facility
attachment.

5m1.

MEASUREMENT BASIS— Enter the appropriate code from the list provided in the
facility attachment.

5m2.

OTHER MEASUREMENT POINT— Enter the appropriate code from the list provided in
the facility attachment.

5m3.

MEASUREMENT METHOD— Enter the appropriate code from the list provided in the
facility attachment.

5n.

ENTRY STATUS—Enter N (for New entry).

5o.

MBA—Leave blank.

5p.

SITE IDC—Leave blank.

NUREG/BR-0007, Rev. 7

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5q.

PROCESS CODE—Enter process code 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:
•

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.

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).

2.2. Instructions for Completing DOE/NRC Form 742, “Material Balance Report”
The following numbered instructions correspond to the numbered blocks and lines on DOE/NRC
Form 742 to be completed by licensees.
1.

NAME AND ADDRESS—Leave blank.
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NUREG/BR-007, Rev. 7

LICENSE NUMBER(S)—Leave blank.

REPORT PERIOD—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
83 2
88
89

Complete a separate DOE/NRC Form 742 for each SNM or source material type even in cases
where two or more types are combined.
When U235 and U233 are mixed, report the total element weight of the mixture in the element
weight column of both the U235 report and the U233 report, and reflect this fact in a concise note
(DOE/NRC Form 740M) for each report.
Section A, “Material Accountability”
PROCESS CODE—Enter process code 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.

Report as Pu238 if the contained Pu238 is greater than 10 percent of total plutonium by weight. Otherwise,
report as plutonium.

NUREG/BR-0007, Rev. 7

E-6

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

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. If Pu238, 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 U233, enter the weight of the isotope U235 or U233 as
appropriate. In the case of plutonium, enter the weight of the isotopes Pu239 and Pu241, and in
the case of Pu238, enter the weight of the isotope Pu238. If Pu238, report to the nearest 0.1 of a
gram. If natural or depleted uranium, enter the weight of the isotope U235 to the nearest gram.
Make no entry for other source material.
8.

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.

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NUREG/BR-0007, Rev. 7

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, “Nuclear Materials 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.

37.

PROCUREMENT BY OTHERS—Leave blank.

38.

DONATED MATERIAL—FROM U.S. GOVT TO OTHERS—Enter the amount of material
received as a donation from the U.S. Government.

39.

DONATED MATERIAL—FROM OTHERS TO U.S. GOVT—Enter the amount of material
received as a donation by others to the account of the U.S. Government.

40.

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

NUREG/BR-0007, Rev. 7

E-8

REMOVALS
41.
42.

EXPENDED IN SPACE PROGRAMS—Leave blank.
SALES TO U.S. GOVT—Enter quantities of SNM or source material that have been sold
to the U.S. Government 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. (SNM or source material quantities entered on line 42 are not entered on
line 51.)

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.—A DOE/NRC Form 741 reporting the cumulative miscellaneous
shipments (ICT 54) must be completed. Possessors reporting pursuant to
10 CFR Part 75 should also include transfers to burials on this line rather than on line
74.

58.

DONATED MATERIAL—TO U.S. GOVT BY OTHERS—Enter the amount of nuclear
material removed by a donation to the U.S. Government.

59.

DONATED MATERIAL—TO OTHERS BY THE U.S. GOVT—Enter the amount of
nuclear material removed from a U.S. Government account by donation to others.

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NUREG/BR-0007, Rev. 7

65.

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.

DECAY 4—Enter the amount of radioactive decay that occurred during the reporting
period for plutonium and Pu238. When the SNM being reported is plutonium (material
type 50), enter the amount of radioactive decay of the isotope Pu241 if the decay is
1 gram or more.
When the SNM being reported is Pu238, enter the amount of radioactive decay of the
isotope Pu238 if the decay is 0.1 gram or more.

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 material that has been discarded, whether in the form
of solids, liquids, or gases, as determined by measurement or by estimate on the basis
of measurement.
All material that leaves the inventory through the process of normal operational
losses/measured discards must be accounted for on a DOE/NRC Form 741 (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 discard is 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 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 the DOE/NRC Form 741 will
show the shipper’s RIS with an H appended 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. Such
activities must also be documented on DOE/NRC Form 741. Remove discards from
inventory only when the material has been disposed of (1) by transfer to an authorized
recipient or holding area as provided in the regulations in 10 CFR Part 40, “Domestic
Licensing of Source Material,” or 10 CFR Part 74, “Material Control and Accounting of
Special Nuclear Material,” (2) as authorized pursuant to 10 CFR 20.2002, “Method for

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.

NUREG/BR-0007, Rev. 7

E-10

Obtaining Approval of Proposed Disposal Procedures,” (3) as provided 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) as provided 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.

80.

ENDING INVENTORY—U.S. GOVT-OWNED—Enter the ending inventory that is owned
by the U.S. Government 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 inventory that is
not owned by the U.S. Government 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.

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 only applies to licensees that possess obligated nuclear material in their inventory
within a reporting period. This section does not apply to licensees that have not possessed
or transferred (received or shipped) foreign obligated material within a reporting period.
The total amount of 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
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NUREG/BR-0007, Rev. 7

inventory for a given material type, also known as a “negative obligations balance.” Facilities
should use especial care to avoid a negative obligations balance at the time of facility
reconciliation. The NMMSS may report a negative obligations balance for a facility at any given
time within a material balance period because 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 is balanced.
The following column entries are required:
1.

COUNTRY OF OBLIGATION—Enter the unique obligated code for each category of
nuclear material. Appendix C to this document lists the codes. The NMMSS operator
can provide an updated listing.

ISOTOPE WEIGHT—Enter the appropriate isotope weight; if enriched uranium or U233,
enter weight to the nearest gram of U235 or U233, as appropriate. If plutonium, make no
entry.

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

NUREG/BR-0007, Rev. 7

E-12

File Type	application/pdf
File Title	NUREG/BRB0007
Author	Brian Horn
File Modified	2020-09-03
File Created	2018-05-03