ML20090J245

Provides Addl Info on Util Actions Per Generic Ltr 88-14. Operability Testing on Air Operated Valves Completed.Util Developing Program to Ensure Operability W/Surveillance & Preventive Maintenance,Including After Seismic Event

ML20090J245
Person / Time
Site:	Oyster Creek
Issue date:	03/09/1992
From:	J. J. Barton GENERAL PUBLIC UTILITIES CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
C321-92-2072, GL-88-14, NUDOCS 9203170132
Download: ML20090J245 (2)

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u GPU Nuclear Corporatien ci 3 t u cle a r  :::en:rsee o

Forked River, New Jersey 08731-o388 609 971-4000 Writer's Direct D:al Number:

C321-92-2071 March 9, 1992 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, N 20555 Gentlemen:

Subject:

Op ter Creek Nuclear Ge erating Station Docket No. 50-219 Generic Letter 88-14 The purpose of this letter is to inform the NRC of the status of actions idet.tified in Giu Nuclear's letter to the NRC dated February 21, 1989.

As stated in that previous correspondence, GPU Nuclear has concluded that the Oyster Creek Instrumcnt Air System design is in accordance with its intended function, and that air-operated components will function as expected in accordance with all design basis events including loss of air.

GPU Nuclear completed functional operability testing of air operated valves. Thi.i testing consisted of ensuring valves were positioned appropriately following a 4e simulated loss of air condition. For valves with accumulators, this was assessed by stroking the 40 safety-related valves using accumulators only. For the safety-related valves with spring return actuators, the air was vented from the actuator resulting in the spring repositioning the valve. These functional operability tests were successfully completed during the 13R outage.

'GPU Nucl_ar al so performed an evaluation of applicable components and piping / tubing utilizing the Seismic Qualification Utilities Group (SQUG) program.

The cunclusions of the seismic evaluation report implied that the piping or tubing for ten secondary contairmant isolation valves may have failed due to the loadings imposed by a SSE. Had the air piptr4 or tubing failed as a result of the seismic loads, the operability of these valves could have been challenged.

As a result of this review a modification was installed durir.g 13R to provide 3 flexible hoses at these 1ccations, effcct5aly alleviating this concern.

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GPU Nuclear Corporation is a subsdary of General Pubhc Utities Corporaton f f1 l l

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r321-92-2072 age 2 5

Currently, a program to ensure oper.'bility of safety-related air operated valves is nder development. This program will be implemented through appropriate surveillance and preventative maintenance activi+ies utilizing the test results identified during the functional testing previously described.

Should you have any questions regarding this response, please contact Mr. Thomas Blount, Oyster Creek Licensing Engineer at 609-971-4007, Very tr ly yours, f l

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Jolin J. Bar an e Presid nt and Director Oyster Crce JsB/TB:jc cc: Administrator, Region 1 Senior NRC Resident Inspector l

Oyster freek NRC Pro.iect Manager l

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