ML20202C572

Sser Accepting Util 860304 Response to Generic Ltr 83-28, Item 4.3, Seismic Qualification of Shunt Trip Components

ML20202C572
Person / Time
Site:	Beaver Valley
Issue date:	04/03/1986
From:	NRC
To:
Shared Package
ML20202C558	List: ML20202C554 ML20202C572
References
GL-83-28, NUDOCS 8604110418
Download: ML20202C572 (2)

Text

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SUPPLEMENTAL SAFETY EVALUATION REPORT l BEAVER VALLEY UNIT 1 i GENERIC LETTER 83-78, ITEM 4.3 REACTOR TRIP BREAKER AUTOMATIC TRIP INTRODUCTION AND

SUMMARY

Generic Letter 83-28 was issued by NRC on July 8, 1983, indicating actions to be taken by licensees based on the generic implication of the Salem ATWS events.

Item 4.3 of the generic letter requires that modifications be made to improve the reliability of the reactor trip system by implementation of an automatic actuation of the shunt attachment on the reactor trip breakers. Subsequent to the review of the licensee's submittal of July 16, 1984, the staff issued a safety evaluation report on November 8, 1984 indicating the acceptable and un-acceptable aspects of the design and requested the licensee to submit additional

, information for staff's approval. By letters dated January 14, May 10, and September 3,1985, the licensee submitted additional information.

Upon review of that information, the staff issued a supplemental SER on October 9, 1985 which resolved all issues except for confirmation of the seis-mic qualification of the shunt trip attachment and panel,and the submission of technical specifications. By letter of March 4, 1986, the licensee submitted information regarding the seismic qualification issue. The staff has reviewed this information and finds it acceptable.

EVALUATION The licensee stated that Westinghouse had performed generic qualification tests for the Westinghouse Owners Group (WO3) and the results nf these tests were 8604110418 e60403 PDR ADOCK 05000334 P PDR

2 issued by the WOG in February 1985. Further, Westinghouse had provided addi-tional information on the in-equipment seismic levels at the mounting locations.

Upon review of this information, the licensee concluded that the shunt trip attachment and automatic shunt trip panel are seismically qualified for use at the Beaver Valley Power Station. The staff, therefore, considers this issue to be satisfactorily resolved.

CONCLUSION All issues under Generic Letter 83-28. Item 4.3, have now been found acceptable a

by the staff except for the submission of proposed Technical Specifications con-sistent with Generic Letter 85-09.

seu Principal contributor:

A. Toalston Dated April 1986

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