ML19260D974

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Responds to NRC Re Inservice Testing of Lhsi Check Valves.Valves SI-79,82,85,241,242 & 243 Will Be Tested to Verify Proper Operation.Design Change Requested to Install Leakage Monitoring Connections on Lines
ML19260D974
Person / Time
Site: Surry  Dominion icon.png
Issue date: 02/07/1980
From: Stallings C
VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To: Harold Denton, Schwencer A
Office of Nuclear Reactor Regulation
References
030-121779, 30-121779, NUDOCS 8002120687
Download: ML19260D974 (1)


Text

VinoIstA ELucTnzc a xn POWE R COhiPANY Rxcuxoxo,Vzuorm zA cou61 February 7, 1980 Mr. Harold R. Denton, Director Serial No. 030/121779 Office of Nuclear Reactor Regulation P0/FHT:baw Attn: Mr. A. Schwencer, Chief Docket Nos: 50-280 Operating Reactors Branch #1 50-281 Division of Operating Reactors License Nos: DPR-32

._m,..m, U. S. Nuclear Regulatory Commission DPR-37 Washington, D. C.

20555 Dear Mr. Dentor Surry Power Station Units 1 and 2 ISI Testing of LHSI Check Valves In response to your letter of December 17, 1979, on the above subject, the Virginia Electric and Power Company provides the following information.

1.

The check valves in question (SI-79,82,85,241,242,243) will be tested, utilizing previously approved ISI acoustical monitoring techniques, to verify proper operation.

However, the existing system design does not provide the capability for leak testing the valves.

A design change request has been initiated to install leakage monitoring connections on the appropriate lines.

A thorough review of the safety implications of the request is underway.

Unless otherwise determined by the review, le ak testing will be performed utilizing the system developed in the design package.

2.

Implementation of the design package, development of the necessary procedures, and actual testing of the valves will be completed for Unit 2 prior to startup and during the next refueling shutdown for Unit 1.

Very truly yours, j

g, Zi //) yf..Yr. i gn C. M.

Stallings Vice President-Power Supply and Production Operations F)S2 09 8002i20 (8 7