ML20132D359
| ML20132D359 | |
| Person / Time | |
|---|---|
| Site: | Westinghouse |
| Issue date: | 03/12/1985 |
| From: | Brown W NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | Sanders C WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP. |
| References | |
| NUDOCS 8507310334 | |
| Download: ML20132D359 (2) | |
Text
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PLEASE RETURN TO NMSS/SGFF - 881-SS
_ DISTRIBUTION MAR 12 la85 V PDR Docket File 70-1151-SGFF:DRJ-85-24 Case File 70-1151 SGFF r/f NMSS r/f Westinghouse Electric Corporation DJoy Nuclear Fuel Division - Columbia Plant CNSmith ATTN: Mr. C. F. Sanders, Manager ESuarez Nuclear Materials Management DWeiss, LFMB Drawer R WCrow, FC Columbia, South Carolina 29250 LCobb, IE JPStohr, RII Gentlemen:
EMcAlpine, RII Based on discussions'between John Chinault of your staff and Don Joy of this office concerning your desire to upgrade your fuel rod bias correc-tion methodology, and also based on a recent policy change pertaining to our bias correction criteria, it has been mutually determined that Condition 4.5 of your Amendment SG-1 needs to be revised. Accordingly, License Condition 4.5 of Amendment SG-1 to your License No. SNM-1107 is hereby revised, effective imediately, to read as follows:
4.5 Notwithstanding the requirement of 10 CFR 70.57(b)(8) to measure control standards for all measurement systems for the purpose of determining bias, and notwithstanding the requirement of 10 IFR 70.57(b)(11) to maintain a statistical control system to monitor such control standard measurements, the licensee need not measure nor monitor such control standards for point calibrated, bias-free, systems. To be regarded as bias-free, a measurement system must either (1) be calibrated (by one or more measurements of a representative standard) at least once during any eight-hour time frame in which l
process unknowns are measured, and the measurement value assigned to a given unknown must either be based on the single most recent calibration or the average of two or more calibrations performed during such eight-hour time frame, or (2) incorporate a bias correction into the measurement response for each process unknown measured (at the time of measurement) where such bias correction is based upon the average of the eight (or more) most recent measurements of a representative standard per-l formed within the past 14 calendar days -- at least one i
of which was performed within the past eight hours.
When utilizing the approach given in (2) above (which can only be applied in the case of mass or NDA systems), each bias correction must be calculated to the nearest.01 gram l
8507310334 850312 PDR ADOCK 07001151
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- $$ $ 5 tJr. C. F. Sanders MAR 121985 (grossweight,tareweight,orgramsU-235asappropriate) and applied to an item before rounding the item's value to its nearest accounting unit (e.g., the nearest tenth of a gram for fuel rods).
Sincerely.
Oti;iaal si;qsd by Wi!!ard 8. Brown Willard B. Brown, Chief Fuel Facility Safeguards Licensing Branch Division of. Safeguards, NMSS cc:
A. J. Nardi 1
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