TXX-6870, Interim Deficiency Rept CP-87-08 Re Calibr Accuracy for Dead Weight Tester Used in Calibr Pressure Instrumentation. Initially Reported on 870420.Currently Evaluating Impact of Inaccuracies on Affected Tests.Next Rept by 880106
| ML20236C464 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 10/21/1987 |
| From: | Counsil W, Woodlan D TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| CP-87-08, CP-87-8, TXX-6870, NUDOCS 8710270201 | |
| Download: ML20236C464 (2) | |
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USNRC-DS M==
Log. # TXx-6870 5
Fil' # IUII0 l%1 OCT 27 A D Ib
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907 Ref #10CFR50.55(e) 7UELECTR/C W'illiam G. Counsil tmo,,,, v,c, e,,
October 21, 1987 l
U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington,.D. C. 20555
$UBJECT:
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 calibration accuracy for a Dead Weight Tester used as a standard in calibrating pressure instrumentation.
This tester has been used in the Operations (Instrumentation & Controls) test / maintenance program.
This is an interim report of a potentially reportable item under the provisions of 10CFR50.55(e). Our latest report was logged TXX-6574, dated July 21, 1987.
As discussed in our last report, a total of seven calibration standards have been identified that did not meet the required calibration accuracy.
We have completed reviews to identify post maintenance tests, post design modification tests, hot functional tests and preoperational tests associated with safety systems that utilized test instruments affected by the seven calibration standards.
We are currently evaluating the impact of the inaccuracies on the affected tests.
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'TXX-6870:
October 21;.:1987 D
.Page 2 of'2:
Our evaluation'of this ' issue is being conducted in. conjunction with Corrective ActionReport'(CAR)87-053. We'will submit our next' report on this issue by.
January 6, 1988.
-Very truly yours,
- b. M W. G. Counsil l
By:
D. R.~Woodlan
.i Supervisor, j
Docket Licensing' i
BSD/gj c - Mr. R. D. Martin, Region IV l
Resident Inspectors, CPSES (3) l i
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