05000311/LER-1982-001, Supplemental LER 82-001/03X-1:on 820110,steam Generator 24 Pressure Channel 4 Failed High.Caused by Ventilation Damper Stuck Open,Freezing Pressure Sensing Line.Damper Freed, Exercised & Closed

Supplemental LER 82-001/03X-1:on 820110,steam Generator 24 Pressure Channel 4 Failed High.Caused by Ventilation Damper Stuck Open,Freezing Pressure Sensing Line.Damper Freed, Exercised & Closed

ML20082K672
Person / Time
Site:	Salem
Issue date:	11/11/1983
From:	Rupp J, Zupko J Public Service Enterprise Group
To:	Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-82-001-03X-01, LER-82-1-3X-1, NUDOCS 8312050270
Download: ML20082K672 (4)

LER-2082-001, Supplemental LER 82-001/03X-1:on 820110,steam Generator 24 Pressure Channel 4 Failed High.Caused by Ventilation Damper Stuck Open,Freezing Pressure Sensing Line.Damper Freed, Exercised & Closed

Event date:
Report date:
3112082001R00 - NRC Website

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EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h

[O T31 lon January 10, 1982, a control room operator observed that the No. 24. Steam Generator l O 3 IPressure Channel 4 had failed high. At 0300 hours0.00347 days <br />0.0833 hours <br />4.960317e-4 weeks <br />1.1415e-4 months <br />, pressure channel 4 was declared l O 4 l inoperable and Technical Specification Action Statement 3.3.2 Action 14 was entered. l TO TT1 1 I O 6 l l 10171 I I ITTin I I 7 8 9 80 DE CO E S SC E COv*0NENT CODE SUB DE S E ITITI 7 8 I; ic l@ Lc_J@ Lz_J@ l 11 ul si TI al ul@ LE_jh [ZJ h 9 11 12 to 13 18 19 20

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{g 42 lN lg lZ 43 u l9 [9 l9 lg 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h l i l 0 l lThe ventilation damper had stuck open, freezing the pressure sensing line. The g l damper was freed, excercised and closed; the sensing line was thawed, tested, and g greturned to service. At 0325 hours0.00376 days <br />0.0903 hours <br />5.373677e-4 weeks <br />1.236625e-4 months <br />, January 10, 1982, Action Statement 3.3.2 g

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~ O PSIEG Public Service Electric and Gas Company P.O. Box E Hancocks Bridge, New Jersey 08038 Salem Gene ating Station November 11, 1983 Dr. Thomas E. Murley Regional Administrator USNRC Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406

Dear Dr. Murley:

LICENSE NO. DPR-75 DOCKET NO. 50-311 REPORTABLE OCCURRENCE 82-001/03X-1 SUPPLEMENTAL REPORT Pursuant to the requirements of Salem Generating Station Unit No. 2 Technical Specifications, Section 6.9.1.9.b, we are submitting supplemental Licensee Event Report for Reportable Occurrence 82-001/03X-1.

Sincerely yours, feb 9-J. M. Zupko, Jr.

General Manager -

Salem Operations JR:kll CC: Distribution o'

The Energy People 40

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Report Number: 82-001/03X-1 Report Date: 11-11-83 Occurrence Date: 01-10-82 Facility: Salem Generating Station, Unit 2 Public Service Electric & Gas Company Hancocks Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

No. 24 Steam Generator Pressure Channel 4 - Inoperable.

This report was initiated by Incident Report 82-008.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 1 - Rx Power 97% - Unit Load 1080 MWe DESCRIPTION OF OCCURRENCE:

On January 10, 1982 the operator noticed that No. 24 Steam Generator Pressure Channel 4 had failed high. At 0300 hours0.00347 days <br />0.0833 hours <br />4.960317e-4 weeks <br />1.1415e-4 months <br /> the pressure channel was declared inoperable and Action Statement 3.3.2 Action 14 was entered.

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 reason No. 24 Steam Generator Pressure Channel 4 failed high was the. ventilation damper stuck open, freening the pressure sensing line.

ANALYSIS OF OCCURRENCE:

Technical Specification 3.3.2 Action 14 requires:

With the number of operable channels one less than the

! 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 iwithin one hour.

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C,ORRECTIVE ACTION:

The ventilation damper was freed and exercised, then closed.

The pressure sensing line was thawed, tested, and returned to service. At 0325 hours0.00376 days <br />0.0903 hours <br />5.373677e-4 weeks <br />1.236625e-4 months <br />, January 10, 1982, Action Statement 3.3.2 Action 14 was terminated.

Design Change Request (DCR) 2SC-0160 was completed July 11, 1983. l This DCR installed temperature monitoring in the north and south penetration areas with associated alarms (at 390F) on the auxiliary annunciator in the control room. A similar design change (DCR ISC-0159) is being incorporat.ad on Salem Unit No. 1. I FAILURE DATA:

Not Applicable 2

Prepared By J. Rupp P" 2 L r--

// Gen (ral Man 6ger -

Salem Operations SORC Meeting No.83-141 1

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