05000272/LER-1981-049, Forwards LER 81-049/03L-0.Detailed Event Analysis Encl

Forwards LER 81-049/03L-0.Detailed Event Analysis Encl

ML19350E061
Person / Time
Site:	Salem
Issue date:	06/10/1981
From:	Uderitz R Public Service Enterprise Group
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19350E062	List: 05000272/LER-1981-049, Forwards LER 81-049/03L-0.Detailed Event Analysis Encl 05000272/LER-1981-049-03, /03L-0:on 810518,Action Statement 3.6.1.3a Was Entered Due to Elevation 100-ft Containment Air Lock Being Inoperable.Caused by Damaged Inner Door Latching Mechanism Cam Rollers Due to Large Number of Operations
References
NUDOCS 8106160358
Download: ML19350E061 (3)

LER-1981-049, Forwards LER 81-049/03L-0.Detailed Event Analysis Encl

Event date:
Report date:
2721981049R00 - NRC Website

text

V o 4 PSEG Public Service Efectric and Gas Company 80 Par A Plaza Newark, N.J. 07101 Phone 201/430 7000 June 10, 1981

Ng _

1. 3 Director of USNRC Mr. Boyce H. Grier u

(,'Y Office of Inspection and Enforcement 4

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Region 1

,y 631 Park Avenue 6

4

%;j King of Prussia, Pennsylvania 1940f

Dear Mr. Grier:

LICENSE NO. DPR-70 DOCKET NO. 50-272 REPORTABLE OCCURRENCE 81-49/03L Pursuant to the requirements of Salem Generating Station Unit No. 1 Technical Specifications, Section 6.9.1, we are submitting Licensee Event Report for Reportable Occurrence 81-49/03L.

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

Sincerely yours, h

R. A. UderitM General Manager -

Nuclear Production CC:

Director, Office of Inspection and Enforcement (30 copies) l Director, Office of Management l

Information and Program Control (3 copies) 810 6164 3 5 tP.g z m.mu e

F~

V Report Number:-

81-49/03L i

Report Date:

June 10, 1981 Occurrence Date:

5/18/81 Facility:

Salem Generating Station, Unit 1 Public Service Electric & Gas Company Hancocks Bridge, New Jersey 08038 i

IDENTIFICATION OF OCCURRENCE:

Containment Air Lock (Elevation 100) - Inoperable CONDITIONS PRIOR TO OCCURRENCE:

Mode l'- Rx Power 99% - Unit Load 1100 MWe DESCRIPTION OF OCCURRENCE:

At 1517 hours0.0176 days <br />0.421 hours <br />0.00251 weeks <br />5.772185e-4 months <br /> on May 18, 1981, Action Statement 3.6.1.3a was entered when the Containment Air Lock located on Elevation 100 could not be opened by a plant operator.

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

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

The designation of the apparent cause of this occurrence is equipment failure.

An inspection of the Containment Air Lock identified the problem as damaged cam rollers on the inner door latching mechanisms.

ANALYSIS OF OCCURRENCE:

The Action Statement for Technical Specification 3.6.1.3 requires that with an air lock inoperable, restore the air lock to operable' status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or be in at least Hot Standby within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in Cold Shutdown within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

The investigation of the occurrence disclosed the damage to the inner door latching mechanism was caused by the large number of air lock operations during a recent outage and the subsequent plant start-up.

L e

r-V 6:

i 6/10/81

}

'LER [81-49/03L ;

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CORRECTIVE ACTION

I The damaged inner door latching mechanism cam' rollers were replaced.

Action The subject Containment Air Lock was tested satisfactorily.

Statement 3.6.1.3a was terminated at 2045 hours0.0237 days <br />0.568 hours <br />0.00338 weeks <br />7.781225e-4 months <br /> on May 18, 1981.

i y

- FAILURE DATA:

,i Containment Air Lock l

Chicago Bridge and Iron Company i

Cam Rollers Smith Bearing Division i

PN:

CR-1X-

/

- 0 Prepared By J. J. Espey Manager - Sdlem' Generating Station 4

SORC Meeting No.

81-45 P

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