ML20027C980

LER 82-039/03L-0:on 820920,timing Tests of Three Reactor Water Cleanup Isolation Valves 1201-2,-5 & -80 Not Completed within Allowed Time.Caused by Operational Constraints Requiring Testing at Reduced Power

ML20027C980
Person / Time
Site:	Pilgrim
Issue date:	10/20/1982
From:	Whitney G BOSTON EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20027C979	List: ML20027C978 ML20027C980
References
LER-82-039-03L, LER-82-39-3L, NUDOCS 8210280131
Download: ML20027C980 (2)

Text

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7 8 60 61 69 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h Io l2l lOn 9/20/82 Station Management was informed that T.S. required timing of three RWCU l Io Iai l isolation valves (1201-2 -5 & -80) was not completed within the allowed time. [

lo i4 l l Procedure 8.7.4.3 had been scheduled properly and all other listed valves had been j tested satisfactorily. Subsequent testing of the valves in question resulted in Io is l l times within the allowable T.S. limits. Therefore, no threat to the public health l lol7l l and safety occurred. l l

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43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h l i l o l l Operational constraints on the subject valves required deferring the testing to a l 1ili} l period of reduced power. In addition, the signoff sheet was not routed correctly to 1 it i2, l allow proper review. To prevent recurrence, emphasis has been placed on the respon- l lil3i l sible persons regarding proper review of tests to detect and correct deviations. [

t i 14 i l See Attachment for further information. 80

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7 8 9 STA S  % POWER OTHER ST ATUS DIS O RY DISCOVERY DESCRIPTION NA l f l1 15 l lE l@ l 0 l 7 l 5 l@l l l l@l Surveillance Test I Activity CO TENT l

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• BOSTON EDISON COWANY PILGRIM NUCLEAR POWEn STATION DOCKET NO. 50-293 Attachment to LER 82-039/03L-0 On September 20, 1282 Station manaaement was informed that,some data _

was missing regarding Technical Specification required . timing tes_ts.

Quarterly test number 8.7.4.3 " Test Isolation Valves Except MSIV's", was per-formed on July 16, 1982, however, three reactor water cleanup isolation valves (M.O.V.'s 1201-2, -5 and -80) did not have timing data recorded on the date scheduled. Data was found for valve number 1201-2 that indicated the timing was done seven days late (8/15/82). Timing for the 1201-5 and -80 valves was accomplished on the day of the report (9/20/82).

The subject valves have a history of leakage through packing and are often

electrically backseated in an effort to eliminate propogation of the resultant airborne effluents and increased drywell temperature and leakage. The Watch Engineer conducting the test recognized the operational constraints on these valves and noted on the signoff sheet that the valves were "to be done at reduced power due to leakage". Following this, the signoff sheet was not forwarded to Performance Engineering per procedure which may have prevented the early discovery of the deferred tests.

On 9/21/82, a PNPS staff meeting was held to discuss recommended changes to the Master Surveillance Test Program (MSTP).

Reference:

LER 82-037 issued 9/22/82 titled " Late Surveillance Tests". Four major items were established and a preliminary action plan for approval was scheduled to be reviewed at the time of this report. These proposed items are as follows:

1. Issue with each weekly update, a schedule that includes the current week plus several weeks of projected surveillance tests.

2. Re-format the sxisting output report to incorporate an early due date, a due date and a "Last Chance" date to perform each surveillance test.

3. Revise the existing program to incorporate a Julian calendar such that Saturdays, Sundays and holidays will not be reflected as scheduled dates for performing surveillance tests.

4. Evaluate a method to ensure each responsible group's identification of i those surveillance tests that enter into the plus 25% window. Also provide a management control mechanism within each group to provide self checking and formal notification of the responsible engineer and group leader.

Another topic of discussion was centered around deviations associated with the performance of surveillance tests. It was emphasized and noted that Chief Engineers and Group Leaders have the responsibility to resolve any deviatichs associated with the performance of a surveillance test.

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