05000272/LER-1983-004, Forwards LER 83-004/03L-0.Detailed Event Analysis Encl

Forwards LER 83-004/03L-0.Detailed Event Analysis Encl

ML20079M859
Person / Time
Site:	Salem
Issue date:	02/18/1983
From:	Midura H Public Service Enterprise Group
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20079M863	List: 05000272/LER-1983-004, Forwards LER 83-004/03L-0.Detailed Event Analysis Encl 05000272/LER-1983-004-03, /03L-0:on 830124,equipment Operator Discovered Leak on Diesel Generator 1B Jacket Water Sys.Caused by Cracked Piping Nipple Due to Personnel Standing on Jacket Water Sys Piping.Cracked Nipple Replaced
References
NUDOCS 8303030292
Download: ML20079M859 (3)

LER-1983-004, Forwards LER 83-004/03L-0.Detailed Event Analysis Encl

Event date:
Report date:
2721983004R00 - NRC Website

text

O PSEG Public Service Electric and Gas Company P.O. Box E Hancocks Bridge, New Jersey 08038 Salem Generating Station February 18, 1983 Mr.

R.

C. Haynes Regional Administrator USNRC Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406

Dear Mr. Haynes:

LICENSE NO. DPR-70 DOCKET NO. 50-272 REPORTABLE OCCURRENCE 83-004/03L Pursuant to the requirements of Salem Generating Station Unit No. 1, Technical Specifications, Section 6.9.1.9.b, we are submitting Licensee Event Report for Reportable Occurrence 83-004/03L.

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

Sincerely yours,

}/

HlaYtw' H. J. Midura General Manager -

Salem Operations RF:ks CC:

Distribution 8303030292 830218 PDR ADOCK 05000272 S

PDR The Energy People gW ruwnn.n, m L

Report Number:

83-004/03L Report Date:

02-17-83 Occurrence Date:

01-24-83 Facility:

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

A.C. Power Sources - No. 1B Diesel Generator - Inoperable.

This report was initiated by Incident Report 83-023.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 'l - RX Power 0 % - Unit Load 0 MWe, DESCRIPTION OF OCCURRENCE:

At 1205 hours0.0139 days <br />0.335 hours <br />0.00199 weeks <br />4.585025e-4 months <br />, January 24, 1983, during routine shutdown operation, an Equipment Operator discovered a leak in the jacket water system of No. 1B Emergency Diesel Generator.

The leakage was from a mechanical joint in the system piping near Valve 1DA45B.

No. 1B Emergency Diesel Generator was declared inoperable, and Technical Specification Action Statement 3.8.1.1a. was entered.

Within one hour, surveillance Procedures SP(0) 4.8.1.1.1a and SP(0) 4.8.1.1.2a2 were performed to 4

demonstrate operability of the remaining A.C.

sources.

The surveillances were performed every eight hours until the inoperable diesel was returned to an operable status.

APPARENT CAUSE OF OCCURRENCE:

Investigation of the problem revealed that the leakage was emanating from a cracked pipe nipple.

Inspection of the jacket water system piping suggested that the nipple may have cracked due to personnel standing on the piping in the course of operation or maintenance.

ANALYSIS OF OCCURRENCE:

The operability of the A.C.

and D.C. power sources and associated distribution systems during operation ensures that sufficient power will be available to supply the safety related equipment for safe shutdown of the facility and mitigation of accidents.

The requirements are consistent with the initial condition assumptions of the accident analyses, and are based on maintaining a single supply with an assumed loss of offsite power and single failure of the other A.C. source.

As noted, the redundant A.C.

sources were operable, and therefore no risk to the health and safety of the public was involved.

The occurrence constituted operation in a degraded mode permitted by a limiting condition for operation.

The event is reportable in accordance with Technical Specification 6.9.1.9b.

1

,m.

_=

LER 83-004/03L ANALYSIS OF OCCURRENCE: (cont'dl i

Action Statement 3.8.1.1a requires:

With either an offsite circuit or diesel. generator of the required.A.C. electrical power 1 sources inoperable, demonstrate-the operability of.the remaining A.C. sources by performing i

surveillance' requirements'4.8.1.1.1a and 4.8.1.1.2a2 within one hour'and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter; restore at-least two offsite circuits and three diesel generators.to operable status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> from the time of initial loss or tur 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 />.

CORRECTIVE ACTION

~

As noted, surveillance of the redundant power sources was performed as required by the action statement.

The cracked cipple was replaced, the leakage was stopped, and the jacket water system was-satisfactorily tested.

No. 13 Emergency Diesel Generator was. declared operable ~at 0300 hours0.00347 days <br />0.0833 hours <br />4.960317e-4 weeks <br />1.1415e-4 months <br />, Januac'y-25, 1983. and Action Statement 3.8.1.la was terminated.

The problem of personnel standing on piping was previously addressed in LER 82-053/03L.. Discussion of the potential for adverse impact on safety systems resulting from this practice has been incorporated into the station training program.

Due to the human factors involved, the problem is likely to be of a persistent nature.

Discussion of this incident will be added to the training program in a continuing effort to reduce the frequency of the problem.

~

FAILURE DATA:

Not Applicable i

, (( + < <N l

Prepared By R.

Frahm e

l Genef al Nanager -

Salem Operations SORC Meeting No.89-014 l

I i

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