05000311/LER-1981-081, Forwards LER 81-081/03L-0.Detailed Event Analysis Encl

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Forwards LER 81-081/03L-0.Detailed Event Analysis Encl
ML20010E946
Person / Time
Site: Salem PSEG icon.png
Issue date: 08/28/1981
From: Midura H
Public Service Enterprise Group
To: Grier B
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20010E947 List:
References
NUDOCS 8109090166
Download: ML20010E946 (3)
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LER-1981-081, Forwards LER 81-081/03L-0.Detailed Event Analysis Encl
Event date:
Report date:
3111981081R00 - NRC Website
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  • ""O PSEG Public Service Electric and Gas Company P.O. Box 168 Hancocks Bridge, New Jersey 38038 Salem Generating Station August 28, 1981 g,

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Mr. Boyce II. Grier Director of USNRC (g, d p Office of Inspection and Enforcement 9

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Dear Mr. Grier:

LICENSE NO. DPR-75 DOCKET NO. 50-311 l

REPORTABLE OCCURRENCE 81-81/03L Pursuant to the requirements of Salem Generating Station Unit No. 2 Technical Specifications, Section 6.9.1.9.b, we are submitting Licensee i

Event Report for Reportable Occurrence 81-81/03L.

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

Sincerely yours, i

Y' f

l II. 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)

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8109090166 810828 PDR ADOCK 05000311 S

PDR.

The Energy People 95 2189 (12.5M) 1140

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Report Number:

81-81/03L Report Date:

8-28-81 Occurrence Date:

8-14-81 Facility:

Salem Generating Station, Unit 2 Public Service Electric & Gas Company Hancocks Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

2A Diesel Generator Start Time Failures.

This report is initiated by Incident Report 81-329.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 1 - Rx Power 91% - Unit Load 1000 MWe DESCRIPTION OF OCCURRENCE:

During the performance of surveillance procedure SP (0) 4.8.1.1.2, on August 14, 1981, 2A diesel generator failed to meet the starting time requirements, < 10 seconds, of technical specification 3.8.1.1.

The starting time was 12 seconds.

At 0505 hours0.00584 days <br />0.14 hours <br />8.349868e-4 weeks <br />1.921525e-4 months <br />, August 14, 1981, 2A diesel generator was declared inoperable and action statement 3.8.1.1.a was entered and the provisions of the action statement were complied with.

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:

Equipment failure.

The reason the 2A diesel failed to meet the starting time requirement was the turbo boost air reservoir was down in pressure from the normal 250 psi to approximately 75 psi.

The compressor was running continuously, but not charging the reservoir due to the fact the compressor hydraulic unloader valve was sticking.

ANALYSIS OF OCCURRENCE:

Technical specification 3.8.1.1.a requires:

With either an offsite circuit or diesel generator inoperable, demonstrate the operability of the remaining A.C.

sources by performing surveillance requirements 4.8.1.1.a and 4.8.1.1.2.a.2 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 /> 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 81-81/03L CORRECTIVE ACTION:.

The compressor hydraulic unloader valve was repaired.

The compressor was' tested satisfactorily and returned to service.

Surveillance procedure SP(O)4.8.1.1.2 was satisfactorily performed on 2A diesel within the required starting time.

At'0742, August 14, 1981, action-statement 3.8.1.1.a was terminated.

' FAILURE DATA:

Quincy Compressor Division Hydraulic Unloader Valve PN:

7970X Prepared By F.

Dickey

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W Manages - Salem' Generating Station SORC Meeting No.

81-83 l

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