TXX-6456, Interim Deficiency Rept CP-87-08 Re Accuracy Tolerance of Calibr for Dead Weight Tester Used as Std in Calibr Pressure Instrumentation.Initially Reported on 870420.Next Rept Will Be Submitted by 870721
| ML20214J240 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 05/20/1987 |
| From: | Counsil W, Keeley G TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| CP-87-08, CP-87-8, TXX-6456, NUDOCS 8705270699 | |
| Download: ML20214J240 (2) | |
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Log # TXX-6456
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File # 10110
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Ref # 10CFR50.55(e) nlELECTRIC May 20, 1987 w m. c. co.a Emuive lhe l'resulem 1
U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C.
20555
SUBJECT:
COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)
DOCKET NOS. 50-445 AND 50-446 CALIBRATION ACCURACY OF PRESSURE STANDARD (DEAD WEIGHT TESTER)
SDAR: CP-87-08 (INTERIM REPORT)
Gentlemen:
On April 20, 1987 we verbally notified your Mr. Cliff Hale of a deficiency regarding the accuracy tolerance of calibration for a dead weight tester used as a standard in calibrating pressure instrumentation.
This tester has been used in the Operation test / maintenance program. This is an interim report of a potentially reportable item under the provisions of 10CFR50.55(e). This issue is applicable to both Units 1 and 2.
The safety significance of this issue will be determined based on the results of the following action plan.
O All pressure instrumentation used in safety-related applications will be reviewed to determine the impact of calibration inaccuracies.
O Programs important to safety (e.g., cold hydrostatic tests, preoperational tests, etc.) will be reviewed for the effect of instrumentation inaccuracies, and 0
A review of other calibration standards such as temperature and flow will be performed to determine if generic calibration problems exist.
8705270699 870520 i
PDR ADOCK 05000445 l
S PDR l
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l 400 North Olise Street
!..H. 81 Dallas, Texas 75201
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-May 20, 1987 Page 2 of 2
.i The above review is scheduled for completion by June 30, 1987. We will submit our next report on this issue no later than July 21, 1987.
1 Very truly yours,-
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.W. G.-Counsil By:
G. S. Keeley Manager, Nuclear Lijdnsing j
BSD/gj i
c - Mr. E. H. Johnson - Region IV i
Mr. D. L. Kelley, RI - Region IV l
Mr. H. S. Phillips, RI - Region IV k
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