ML18058B664
| ML18058B664 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 02/18/1993 |
| From: | Donnelly P CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9302240321 | |
| Download: ML18058B664 (5) | |
Text
{{#Wiki_filter:consumers Power POW ERIN& MICHlliAN'S PRO&RESS Palisades Nuclear Plant: 27780 Blue Star Memorial Highway, Covert, Ml 49043 February 18, 1993 Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 PM Donnelly Sojety and Licensing Director DOCKET 50-255 - LICENSE DPR PALISADES PLANT - GUIDELINES FOR COUNTRY CONTROL NUMBER (CCN) MANAGEMENT This letter is in followup to discussions between Messrs John Ho of Consumers Power Company and Richard Gramann of NMSS. Attached is a summary of a survey on the trend of Country Control Number (CCN) management adopted by some of the other nuclear plants in the U.S. In most cases, the fuel vendor's DOE/NRC Form 741 for new fuel shipment, provides the country of origin information which is not itemized for each fuel assembly, but rather for a batch of fuels, or a sub-batch of fuels (a certain number of fuel assemblies in a fuel batch). If there is more than one country of origin specified to a batch or sub-batch of fuels, a question will be raised as to which fuel assembly will be assigned to which country of origin. The conventional way is to assign all the countries of origin to all the affected fuel assemblies. This is what Consumers Power does now, but difficulties have been experienced in managing SNM inventory after a fuel assembly was repaired or reconstituted. We recently conducted a survey to search for a better solution. The result is attached for your review and reference. Other utilities have adopted the CNN management method described in Attachment A. Consumers Power is requesting your approval, to employ the same CCN management method, by April 1, 1993. Approval by this date will allow us to utilize the CNN method in our next semi-annual report. 220037 9302240321 ~~gg5~55 ~DR ADDCK . PDR A CMS' ENER5Y COMPANY
We strongly* believe that the method given in Attachment A, will greatly help us:
- 1.
To easily manage the SNM inventory work after a fuel assembly is repaired or reconstituted. I
- 2.
To follow the general trend set up by other nuclear utilities. Pa~Doi?~ Plant Safety & Licensing Director CC Administrator, Region III, USNRC NRC Resident Inspector - Palisades NRC/NMSS ATTN: Mr. R. Gramman Attachment 2
ATTACHMENT A Consumers Power Company Palisades Plant Docket 50-255 METHOD OF CCN MANAGEMENT ,~.~.'::~.:~* ..~ -~--------- ---- ----- ---------------- ---- ------ -- --- 2 Pages
Described below is an effective method to assign the country of origin to a new batch or sub-batch of fuel assemblies with more than one CCN. This method has been adopted by some other nuclear utilities. The concept as it applies to new fuel receipt can similarly be applied to repairs or reconstitution of fuel assemblies which have more than one CCN. The following* statements summarize the concept of the CCN management method:
- 1.
For example;
- 2.
Countries of origins, USUSOOOO and FRFROOOO are specified by the fuel vendor in the Form 741, to assemblies AOl, A02, A03, A04, A05, A06, A07, A08 and A09. The total Uranium element weights for the 9 assemblies are: 1,093,270 grams from USUSOOOO and 2,550,974 grams from FRFROOOO The country of origin will be assigned in the fo 11 owing way: Assembly Element Wt. CCN Accumulated Number
- {grams)
Assigned Ele. Weight {gms) AOl 404916 ususooo 404916 A02 404916 ususooo 809832 A03 404916 USUSOOO {=283438 gm) 1093270 FRFROOO {=121478 gm) 1214748 A04 404916 FRFROOOO 1619664 A05 404916 FRFROOOO 2024580 A06 404916 FRFROOOO 2429496 A07 404916 FRFROOOO 2834412 A08 404916 FRFROOOO 3239329 A09 404916 FRFROOOO 3644244 Shown as equal for simplicity in example. In reality, exac~ Jotal weights for each assembly provided by the fuel vendor would be used.
- 3.
The basic concepts are:
- a.
Assign only one CCN sequentially to all assemblies until the allocated element weight for USUSOOOO is used up.
*---o:--Ar-flleoreal<fog poTn-t-{As sem6TyA03 for-the -above sample-case) two -----
countries of origins may have to assigned.
- c.
Follow the same concept to assign the second CCN (for the above sample case, FRFROOOO) to the rest of the batch or sub-batch assemblies until the allocated element weights f~r the said CCN is used up. The result is that there are only a few assemblies having two countries of origin. The rest of the batch or sub-batch assemblies have only one country of origin.}}