ML20004D322
| ML20004D322 | |
| Person / Time | |
|---|---|
| Site: | Westinghouse |
| Issue date: | 05/13/1981 |
| From: | Randy Erickson NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | Foster H WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP. |
| References | |
| NUDOCS 8106090169 | |
| Download: ML20004D322 (2) | |
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N RBrightsen Westinghouse Electric Corporation RErickson ATTN: Mr. Harold Foster WBrown, IE Safeguards Coordinator FGillespie, RES Drawer R DWeiss Columbia, South Carolina 29205 RPage, FC MMessinger Gentlemen:
EMcAlpine, Reg. II In your letter dated October 8,1980, you requested a ruling on your method of propagating the random weighing error for fuel assemblies.
As a result of our preliminary evaluation of this request, we have detemined that more infomation is needed in order to satisfactorily evaluate your request. Therefore, we are hereby requesting that you submit the infomation outlined in the attachment to this letter.
Pending a final evaluation and decision concerning this matter, you may continue to use your present method of propagating random weighing errors for fuel assemblies. Should you have any qJestions regarding the information being requested, please contact M. Messinger at (301) 427-4024. Your cooperation in submitting this infomation promptly will be appreciated.
Sincerely, b/
Robert A. Erickson, Acting Chief Material Control and Accountability Licensing Branch
Enclosure:
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a 46 Data Needed to Further Evaluate Request 1.
Typical weights for -
a) fuel assemblies b) skeletons c) tubes d
end plugs (top & bottom) e springs f
lif t tools' 2.
Typical number of -
a) regions on inventory b) assemblies in a region c) rods in an assembly d) tubes in a box e) boxes in a region f) end plugs in a lot (top & bottom) g) end plug lots in a region h) springs in a lot
- 1) spring lots in a region 3.
Typical bias of scales weighing assemblies and skeletons 4.
Relative systenatic and random error variances for the weight of assemblies and skeletons 5.
Variances for -
a) the average weight of:
1) tubes in a box
- 2) end plugs in a lot (top & bottom)
- 3) springs in a lot b) the lift tool weight c) the bias of the scale used in weighing assemblies and skeletons 4
e