05000311/LER-1981-076, Forwards LER 81-076/03L-0.Detailed Event Analysis Encl

Forwards LER 81-076/03L-0.Detailed Event Analysis Encl

ML20010E236
Person / Time
Site:	Salem
Issue date:	08/24/1981
From:	Midura H Public Service Enterprise Group
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20010E237	List: 05000311/LER-1981-076, Forwards LER 81-076/03L-0.Detailed Event Analysis Encl 05000311/LER-1981-076-03, /03L-0:on 810727,Number 24 Reactor Coolant Flow Channel 2 Noted Reading Higher than Other Two Channels. Caused by Failure of Transmitter 2FT-445.Transmitter Replaced & Returned to Svc
References
NUDOCS 8109030229
Download: ML20010E236 (3)

LER-1981-076, Forwards LER 81-076/03L-0.Detailed Event Analysis Encl

Event date:
Report date:
3111981076R00 - NRC Website

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Ne.. J. rsty 08033 Salem Generating Station August 24, 1981 Mr. Boyce H.

Grier s s l I T'l /'h Director of USNRC If(f [l

Office of Inspection and Enforcement I

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Dear Mr. Grier:

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LICENSE NO. DPR-75 h

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WIN DOCKET NO. 50-311 REPORTABLE OCCURRENCE 81-76/03L 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 81-76/03L.

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

Sincerely yours, y

Ltl.dc-%

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) 64, 8109030229 810824

{DRADOCK 05000311 PDR

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Report Number:

81-76/03L Report Date:

8-24-81 Occurrence Date:

7-27-81 Facility:

Salem Generating Station, Unit 2 Public Service Electric & Gas Company Hancocks Bridge, New Jersey 08038 t

IDENTIFICATION OF OCCURRENCE:

Reactor Trip System Instrumentation No. 24 Reactor Coolant Flow Channel 2 - Inoperable.

This report was initiated by Incident Report 81-291.

CONDITIONS PRIOR TO OCCURRENCE:

i Mode 1 - Rx Power 48% - Unit Load 440 MWe DESCRIPTION OF OCCURRENCE:

On July 27, 1981, during routine channel checks the operator noticed that No. 24 reactor coolant flow channel 2 was reading higher than the other two channels.

The channel was declared inoperable and the channel bistable was placed in the tripped condition within one hour.

Limiting condition for operation (L.C.O.)

3.3.1, table 3.3-1, action 7 was entered at 1000 hours0.0116 days <br />0.278 hours <br />0.00165 weeks <br />3.805e-4 months <br /> on July 27, 1981, i

This occurrence constituted operation in a degraded mode in accordance with technical specification 6.9.1.9.b.

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DESIGNATION OF APPARE:IT CAUSE OF OCCURRENCE:

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Equipment failure - transmitter 2FT-445 had failed.

ANALYSIS OF OCCURRENCE:

L.C.O.

3.3.1, table 3.3-1, action 7 states:

With the number of operable channels one less than the total number of channels, power operation may proceed until performance of the next required channel func-tional 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 />.

CORRECTIVE ACTION

Transmitter 2FT-445 was replaced, the channel was tested satisfactorily and returned to service.

L.C.O.

3.3.1, table 3.3-1, action 7 was l

terminated at 1841 hours0.0213 days <br />0.511 hours <br />0.00304 weeks <br />7.005005e-4 months <br /> on July 29, 1981.

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i 2-l LER 81 ^/6/03L 3

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PAILURE DATA:

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1 Fisher and Port.cr Transmitter l

Model No. 10B2496PBNS f

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Prepared By J.

Varga

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s, Manager - Salem Generating Station i

SORC Meeting No.

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