05000272/LER-1981-116, Forwards LER 81-116/03X-1.Detailed Event Analysis Encl

Forwards LER 81-116/03X-1.Detailed Event Analysis Encl

ML20054B562
Person / Time
Site:	Salem
Issue date:	04/01/1982
From:	Midura H Public Service Enterprise Group
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20054B563	List: 05000272/LER-1981-116, Forwards LER 81-116/03X-1.Detailed Event Analysis Encl
References
NUDOCS 8204160599
Download: ML20054B562 (3)

LER-1981-116, Forwards LER 81-116/03X-1.Detailed Event Analysis Encl

Event date:
Report date:
2721981116R00 - NRC Website

text

O PSIdG Public Service Electric and Gas Company P.O. Box E Hancocks Bridge, New Jersey 08038 Salem Generating Station April 1, 1982 Mr.

R.

C. Ilaynes Regional Administrator a

USNRC Q

Region 1 631 Park Avenue R CEll.gg King of Prussia, Pennsylvania 19406 9-APR Dear Mr. Ilaynes

%g,!O /S$g 22 8

LICENSE NO. DPR-70 A

IC ###

C s' f DOCKET NO. 50-272 REPORTABLE OCCURRENCE 81-ll6/03X-1 4

18 SUPPLEMENTAL REPORT Pursuant to the requirements of Salem Generating Station Unit No. 1 Technical Specifications, Section 6.9.1.9.b, we are submitting supplemental Licensee Event Report for Reportable Occurrence 81-116/03X-1.

Sincerely yours, Y

lltwJ i

II.

J. Midura General Manager -

Salem Operations FD:al CC:

Distribution M

%[

ff DO O

O m_,, q s

Report Number:

81-ll6/03X-1 Report Date:

04-01-82 Occurrence Date:

11-24-81, 11-28-81, and 12-8-81 Facility:

Salem Generating Station, Unit 1 Public Service Electric & Gas Company Hancocks Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

100' Elevation Containment Air Lock - Inoperable.

This report was initiated by Incident Reports81-477, 81-483, and 81-492.

CONDITIONS PRIOR TO OCCURRENCE:

11-24-81 Mode 1 - Rx Power 80% - Unit Load 830 MWe 11-28-81 Mode 1 - Rx Power 69% - Unit Load 710 MWe 12-08-81 Mode 1 - Rx Power 76% - Unit Load 800 MWe DESCRIPTION OF OCCURRENCE:

On three separate occasions, November 24 and 28, and December 8,

1981, during the performance of surveillance procedure SP (O) 4.6.1.3, the 100' Elevation Containment Air Lock exceeded the leakage rate limit of 0.05 La at the design pressure of 47.0 PSIG as required by Technical Specification 3.6.1.3.b.

At 1600, 1935, and 1500 hours0.0174 days <br />0.417 hours <br />0.00248 weeks <br />5.7075e-4 months <br />, respectively, the air lock was declared inoperable and Action State-ment 3.6.1.3 was entered.

This occurrence constituted operation in a degraded mode in accord-ance with Technical Specification 6.9.1.9.b.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

The air lock leakage was due to leaking seals and the set screw falling out of the door-operating handwheel.

i ANALYSIS OF OCCURRENCE:

Technical Specification 3.6.1.3 requires:

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 />.

LER 81-ll6/03X-1 -

CORRECTIVE ACTION

On November 24 the inner seal on the outer door which had been damaged, was satisfactorily replaced.

On November 28 a seal on the inner door was leaking excessively.

It was removed, turned around, and properly reinstalled.

On December 8 a seal on the inner door popped out, and the setscrew on the door-operating handwheel fell out.

The seal was repositioned and the setscrew was properly reinstalled.

On all three occasions surveillance procedure SP(O) 4.6.1.3 was satisfactorily performed, and at 1925, 2220, and 2000 hours0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br />, respectively, Action Statement 3.6.1.3 was terminated.

The leaking door seals were purchased from a non-standard supplier.

Return to the standard supplier has resulted in better quality seals.

The air lock manufacturer is supplying a regular and thorough maintenance program in an effort to reduce mechanical mal-functions.

It is expected on site April 6, 1982.

No sup-plemental report will be issued.

FAILURE DATA:

1 Chicago Bridge and Iron Company Containment Air Lock Door Seal l

Prepared By F.

Dickey

/

eM C Gendral' Manager -

(

SORC Meeting No.81-132 l

l 1