05000272/LER-1981-122, Forwards LER 81-122/03L-0.Detailed Event Analysis Encl

Forwards LER 81-122/03L-0.Detailed Event Analysis Encl

ML20040D033
Person / Time
Site:	Salem
Issue date:	01/20/1982
From:	Midura H Public Service Enterprise Group
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20040D034	List: 05000272/LER-1981-122, Forwards LER 81-122/03L-0.Detailed Event Analysis Encl 05000272/LER-1981-122-03, /03L-0:on 811229,during Surveillance Test for Wet Pipe Sprinkler Flow for Svc Bldg,Audible Alarm Emitted Only Continuous Tone.Caused by Mechanically Jammed Encoder. Mechanism Unjammed & Tested Successfully
References
NUDOCS 8201290519
Download: ML20040D033 (3)

LER-1981-122, Forwards LER 81-122/03L-0.Detailed Event Analysis Encl

Event date:
Report date:
2721981122R00 - NRC Website

text

,.

- O PSEG Public Service Electric and Gas Cornpany P.O. Box 168 Hancocks Bridge, New Jersey 08038 -

Salem Generating Station January 20, 1982 Mr.

R.. C. Haynes

,'N Director of USNRC g

Office of Inspection and Enforcement Region 1 OECEjppg 631 Park Avenue 9-0 7962g-King of Prussia, Pennsylvania 19406 2

tri

Dear Mr. Haynes:

r.ae m~;j 4 '7g"> j.\\g,/

LICENSE NO. DPR-70 DOCKET NO. 50-272 REPORTABLE OCCURRENCE 81-122/03L Pursuant to the requirements of Salem Generating Station Unit No.

1, Technical Specifications, Section 6.9.1.9.b, we are submitting Licensee Event Report for Reportable Occurrence 81-122/03L.

This report is required within thirty (30)-days of the occurrence.

Sincerely yours, ll, i b H.

J. Midura General Manager -

Salem Operations

/ D:al CC:

Distribution 8201290519 820120

{DRADOCK 05000272 PDR The Energy People 9s:m onw nm ff off

Report Number:

81-122/03L

- Report Date:

1-20-82 Occurrence Date:

12-29-81 Facility:

Salem Generating Station, Unit 1 Public Service Electric & Gas Company.

Hancocks Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

Fire Detection Instrumentation - Inoperable.

This report was initiated by Incident Report 81-515.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 1 - Rx Power 62% - Unit Load 640 Mwe DESCRIPTION OF OCCURRENCE:

On December 29, 1981, during the performance of the surveillance test for wet pipe sprinkler flow for the Service Building, 88' Elevation, the audible alarm emitted only a continuous tone, without the coded signal.

At 1115 hours0.0129 days <br />0.31 hours <br />0.00184 weeks <br />4.242575e-4 months <br /> breaker No. 13 in the Miscellaneous Signal. Cabinet was deenergized, rendering the alarm inoperable, and Action Statement 3.3.3.6 was entered.

An operator was stationed at the 1RP5, Fire Zone Alarm panel, to track alarm status.

.This occurrence constituted operation in a degraded mode in accordance with Technical Specification 6.9.1.9.b.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

The coded signal did not sound because the encoder was mechanically jammed.

ANALYSIS OF OCCURRENCE:

Technical Specification 3.3.3.6 requires:

With the number of operable fire detection instruments less than required by Table 3.3-10:

Within one hour establish a fire watch patrol to inspect the zone (s) with the inoperable instrument (s) at least once per hour, and restore the inoperable instrument (s) to operable status within 14 days, or in lieu of any other report required by specification 6.9.1, prepare and submit a special report to the commission pursuant to specification 6.9.2 within the next 30 days.

t l.

I

_ _ _. -..... ~..

.. ~..

LER 81-122/03L

CORRECTIVE ACTION

The mechanical mechanism in the encoder was unjammed and tested satisfactorily.

At 1506 hours0.0174 days <br />0.418 hours <br />0.00249 weeks <br />5.73033e-4 months <br /> the alarm was declared operable and Action Statement 3.3.3.6 was terminated.

FAILURE DATA Pyrotronics Model ZCP-4 Prepared by F.

Dickey

/

\\V b Ge'ner#1 Manager -

SORC Meeting No. 82-09 Salem Operations