05000311/LER-1981-095, Forwards LER 81-095/03L-0.Detailed Event Analysis Encl

Forwards LER 81-095/03L-0.Detailed Event Analysis Encl

ML20049C592
Person / Time
Site:	Salem
Issue date:	09/23/1981
From:	Midura H Public Service Enterprise Group
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20049C876	List: 05000311/LER-1981-095, Forwards LER 81-095/03L-0.Detailed Event Analysis Encl 05000311/LER-1981-095-03, /03L-0:on 810828,pressurizer Pressure Protection Channel Found Tripped & Low Pressure Annunciator Alarm Activated.Caused by Protection Channel Malfunction.Universal Board in Solid State Protection Sys Train a Replaced
References
NUDOCS 8110020399
Download: ML20049C592 (3)

LER-1981-095, Forwards LER 81-095/03L-0.Detailed Event Analysis Encl

Event date:
Report date:
3111981095R00 - NRC Website

text

_ - _ _ _ _ _ _ _ _ _ _ _ _ _

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..O PSEG Public Service Electric and Gcs Company P.O. Box 168 Hancocks Bridge, New Jersey 08038 Salem Generating Station September 23, 1981 D'-

Mr.

R.

C. Haynes Director of USNRC

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Office of Inspection and Enforcement

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j Region 1 c'-

631 Park Avenue Udpy King of Prussia, Pennsylvania 19406

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Dear Mr. Haynes:

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LICENSE NO. DPR-75 DOCKET NO. 50-311 REPORTABLE OCCURRENCE 81-95/03L Pursuant to the requirements of Salem Generating Station Unit No.

2, Technical Specifications, Section 6.9.1.9.b, we are submitting Licensee Event Report for Reportable Occurrence 81-95/03L.

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

Sincerely yours, b

y H. J. Midura Manager - Salem Generating Station CC:

R.

A. Uderitz General Manager - Nuclear Production Director, Office of Inspection and Enforcement (30 copies)

Director, Office of Management Information and Program Control (3 copies)

$l 8110020399 8.10923 PDR ADOOM C5000311 i S PDR The Energy Pecple 952189 (12.5M) 1180

. Report Number:

81-95/03L Report Date:

9-23-81 Occurrence Date:

8-28-81 Facility:

Salem Generating Station, Unit 2 Public Service Electric & Gas Company Hancocks Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

Pressurizer Pressure Channel 1 - Inoperable This report was initiated by Incident Report 81-347.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 1 - Rx Power 100% - Unit Load 1120 MWe DESCRIPTION OF OCCURRENCE:

On August 28, 1981, it was discovered that Pressurizer Pressure Protection Channel 1 was in the tripped condition, accompanied by a low pressurizer pressure, one out of three, annunciator alarm.

However, the Channel 1 indicator provided proper indication, in agreement with the other two channels.

This indicated-that the malfunction existed in.the protection channel itself.

At 0315 hours0.00365 days <br />0.0875 hours <br />5.208333e-4 weeks <br />1.198575e-4 months <br />, August 28, 1981, action statements 3.3.1, action 6 and 3.3.2, action 14 were entered.

This occurrence constituted operation in a degraded mode in accord-ance with tech. cal specification 6.9.1.9.b.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

Component failure.

An A417 universal board in the Solid State Protection System, Train A, had failed.

l ANALYSIS OF OCCURRENCE:

Technical specification 3.3.1, action 6 requires:

With the number of operable channels one less than the total number of channels, startup and/or power operation may proceed provided the inoperable channel is placed in the tripped condition.

f Technical specification 3.3.2, action 14 requires:

i-With the number of operable c~annels one less than the r

total number of channels, operation may proceed until performance of the next required channel functional test, provided the inoperable channel is placed in the tripped condition within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.

'LER 81-95/03L,

CORRECTIVE ACTION

Pressurizer Pressure Channel 1 was placed in the tripped condition within one hour.

Universal board A417 in the Solid State Protection System, Train A, was replaced.

The channel was tested satisfactorily and returned to service.

At 0950 hours0.011 days <br />0.264 hours <br />0.00157 weeks <br />3.61475e-4 months <br />, August 28, 1981, action statements 3.3.1, action 6 and 3.3.2, action 14 were terminated.

FAILURE DATA:

Westinghouse Electric Corporation Solid State Protection System Universal Board A417 Prepared By F. Dickey Manager - Salem' Generating Station SORC Meeting No.

81-95