ML20079R506

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Interim Potential Const Deficiency Rept Re Agastat Time Delay Relays.Initially Reported on 831207.Four Defective Relays Identified.Next Rept by 840125
ML20079R506
Person / Time
Site: Hope Creek  
Issue date: 01/06/1984
From: Martin T
Public Service Enterprise Group
To: Murley T
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
NUDOCS 8402020261
Download: ML20079R506 (2)


Text

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'rh Thomas J. Martin Public Service Electric and Gas Company 80 Park Plaza Newark N.J. 07101 201/4304316 Vice President Engineering and Construction 4

January 6, 1984 Dr.' Thomas E. Murley, Administrator U.

S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region I 1

631 Park Avenue King of Prussia, Pennsylvania 19406-t'

Dear Dr. Murley:

POTENTIAL CONSTRUCTION DEFICIENCY AGASTAT TIME DELAY RELAYS HOPE CREEK GENERATING STATION On December 7, 1983, a verbal report was made to Region I, l

-Office of Inspection and Enforcement representative, Mr. G.

Kelly, advising of a potentially significant construction deficiency concerning Agastat time delay relays.

The following information is provided in accordance with 10CFR50.55(e).

Bechtel Power Corporation, our Architect / Engineer and Constructor, has advised us that items of equipment supplied by Brown-Boveri contain 67 Agastat model E-7000 relays.

These relays may exhibit a time and temperature based bleedout of fluid which could result in shorter time delays than those set on the relay dial.

This problem was identified on NRC Information-Notice 82-04.

An inspection of these 67 suspect relays identified four (4) defective relays installed in Unit #1 equipment, one of which was installed in a safety related component, Panel lQA403-Cubicle'12.

Bechtel has issued NCR #3010 to document and control the discrepant hardware.

A final report conveying the requisite safety analysis and full details concerning our corrective actions will be submitted to your office by January 25, 1984.

Very truly yours, w >l' -

PW 8402020261 840106 DR ADOCK 05000354 9

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Dr.

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Murley 2

1/6/84 cc:

Office of Inspection and Enforcement Division of Reactor Construction Inspection Washington, D.

C.

NRC Resident Inspector - Hope Creek P.

O. Box 241 Hancocks Bridge, NJ 08038 l

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