ML20137Q025

Ro:On 851219,post-maint Test Following Replacement of Fire Detection Alarm Terminal Block for Fan Cooler Unit 21 Not Performed.Caused by Personnel Oversight.Test Performed & Circuitry Repaired & Tested Successfully

ML20137Q025
Person / Time
Site:	Indian Point
Issue date:	01/02/1986
From:	Selman M CONSOLIDATED EDISON CO. OF NEW YORK, INC.
To:	Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
NUDOCS 8602050517
Download: ML20137Q025 (1)

Text

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Murt:y Seirnin vce President

. *C sohdated Edison Company of New York. Inc Indian Point Staten Broadway & Bieaktey Ae.

Buchanan. NY 10511 Telephone (914) 737 8116 January 2, 1986 Re: Indian Point thit No. 2 Docket No. 50-247 Dr. Scrnas E. Murley Regional Mministrator U.S. Nuclear Regulatory Cm mission Recion I 631 Park Avenue King of Prussia, PA 19406

Subject:

Inoperable Fire Detector Technical Specification 3.13.D requires that a 30-day report be sutnitted if specified fire detection instrumentation resnains ing;erable beyond 14 days. Wis report is being subnitted in accordance with that rcquirment.

During an inspection program of terminal blocks related to Envirorrental Qualification, a block containing wires feeding the fire detection alam for #21 Fan Cooler Unit charcoal was replaced. The replacanent, which occurred on Novmber 19, 1985 was pm of an offort to replace all tenninal blocks in a single box which were regarded as " suspect" insofar as Environ-mental Qualification was concerned. Wis tenninal block pertained only to fire detection alarm and is not required to be environmentally qualified.

It was included in the replacenent program due to its physical location, i.e. within the same box as the " suspect" terminal blocks.

Since the fire detection alam terminal block was not included in the Environmental Qualification master list, a post mintenance test, after its

, replacerent, was not perforned due to an oversight. % is was not discov-ered untile the fourteenth day after replacement. A test was then per-forned with negative results. %e circuitry was repaired and successfully tested on the fifteenth day.

During the period of inoperability, cmpensatory action as prescribal by the 'Ibchnical Specifications were performed. Wis consista! of monitoring the containment air tm perature on an hourly basis.

We event is regardal as unique and caused by the attention being focusal ,

on the Environmental Qualification inspection, which diverted attention fran routine maintenance activities.

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