Part 2 INVENTORY CHANGE REPORTI1

MBA:

Code of the reporting material balance area. This code is notified to the qualifying nuclear facility concerned by the ONR.

REPORT TYPE:

I for inventory change reports.

REPORT DATE:

Date on which the report was completed.

REPORT NUMBER:

Sequential number, no gaps.

LINE COUNT:

Total number of lines reported.

START REPORT:

Date of first day of reporting period.

END REPORT:

Date of last day of reporting period.

REPORTING PERSON:

Name of person responsible for the report.

TRANSACTION ID:

Sequential number. This is used to identify all inventory change lines relating to the same physical transaction.

IC CODE:

One of the following codes must be used:

MBA FROM:

Use only for inventory change codes RD and RF. For inventory change code RD, the code of the shipping material balance area is reported. If this code is unknown, the code ‘Q’ is reported and the shipper's full name and address must be entered in the comment field (40). For inventory change code RF, the country code of the exporting state, or the MBA code of the exporting installation if known, is reported, and the shipper's full name and address must be entered in the comment field (40).

MBA TO:

Use only for inventory change codes SD and SF. For inventory change code SD, the code of the receiving material balance area is reported. If this code is unknown, the code ‘Q’ is reported and the receiver's full name and address must be entered in the comment field (40). For inventory change code SF, the country code of the importing state or the MBA code of the importing installation if known, is reported, and the receiver's full name and address must be entered in the comment field (40).

PREVIOUS BATCH:

Batch designation before rebatching. The batch designation after the rebatching must be reported in field 11.

ORIGINAL DATE:

In the case of a correction, the day, month and year when the line to be corrected was originally entered must be reported. For correction chains, the original date is always the accounting date of the first line in the chain. For late lines (stand-alone additions), the original date is the date on which the inventory change occurred.

PIT DATE

Date of the physical inventory taking as reported in the material balance report on which the book adjustment for MUF (material unaccounted for) is based. Use only with inventory change code MF.

LINE NUMBER:

Sequential number starting with 1 in each report, no gaps.

ACCOUNTING DATE:

Day, month and year when the inventory change occurred or became known.

ITEMS:

The number of items making up the batch must be reported. If an inventory change consists of several lines, the sum of the number of items reported must equal the total number of items belonging to the same transaction ID. If the transaction involves more than one element the number of items should be declared in the line(s) for the element category of highest strategic value only (in descending order: P, H, L, N, D, T).

ELEMENT CATEGORY:

The following codes must be used:

High enriched uranium

(20% enrichment and above)

Low enriched uranium

(higher than natural but less than 20% enrichment)

ELEMENT WEIGHT:

The weight of the element category referred to in field 25 must be reported. All weights must be reported in grams. The decimal digits appearing in the accounting lines can be reported up to a maximum of three decimal places.

ISOTOPE:

This code indicates the fissile isotopes involved and should be used when the weight of fissile isotopes is reported (28). Use the code G for U-235, K for U-233, and J for a mixture of U-235 and U-233.

FISSILE WEIGHT:

Unless otherwise stated in the particular safeguard provisions, the weight of fissile isotopes must only be reported for enriched uranium and category changes involving enriched uranium. All weights must be reported in grams. The decimal digits appearing in the accounting lines can be reported up to a maximum of three decimal places.

ISOTOPIC COMPOSITION:

If agreed in the particular safeguard provisions the isotopic composition of U and/or Pu must be reported in the format as a list of weights separated by semi-colons to denote the weight of U-233, U-234, U-235, U-236, U-238 or Pu-238, Pu-239, Pu-240, Pu-241, Pu-242. The decimal digits appearing in the accounting lines can be reported up to a maximum of three decimal places.

OBLIGATION:

Indication of any additional obligation assumed by the United Kingdom under a relevant international agreement, to which the qualifying nuclear material is subject (regulation 19). The ONR may communicate the appropriate codes to the qualifying nuclear facility.

PREVIOUS CATEGORY:

Code of the category of qualifying nuclear material before the category change. The corresponding code after the change must be reported in field 25. Use only with the inventory change codes CE, CB and CC.

PREVIOUS OBLIGATION:

Code of the particular safeguard obligation to which the qualifying nuclear material was subject before the change. The corresponding obligation code after the change must be reported in field 30. Use only with the inventory change codes BR, CR, PR and SR.

DOCUMENT:

Operator-defined reference to supporting document(s).

CONTAINER ID:

Operator-defined container number. Optional data element which can be used in those cases where the container number does not appear in the batch designation.

CORRECTION:

Corrections have to be made by deleting the wrong line(s) and adding the correct one(s), where appropriate. The following codes must be used:

PREVIOUS REPORT:

Indicate the report number (4) of the line to be corrected.

PREVIOUS LINE:

For deletions, or additions forming part of a deletion/addition pair, indicate the line number (22) of the line to be corrected.

COMMENT:

Free-text comment field for short comments by operator.

BURN-UP:

For inventory changes of type NP or NL in nuclear reactors, burn-up in MW days/tonne.

CRC:

Hash code of line for quality control purposes. The ONR must inform the operator of the algorithm to be used.

PREVIOUS CRC:

Hash code of the line to be corrected.

ADVANCE NOTIFICATION:

Reference code for the advance notification (regulations 21 and 22). Use with inventory changes SF and RF.

CAMPAIGN:

Unique identifier for the reprocessing campaign. Use only for inventory changes in the process material balance area(s) of those qualifying nuclear facilities where spent fuel is reprocessed.

REACTOR:

Unique identifier for the reactor from which irradiated fuel is being stored or reprocessed. Use only for inventory changes in those qualifying nuclear facilities where spent fuel is stored or reprocessed.

ERROR PATH:

Special code describing measurement errors and their propagation, for material balance evaluation purposes. The codes are agreed between the qualifying nuclear facility and the ONR.