05000272/LER-1981-072, Forwards LER 81-072/01T-0.Detailed Event Analysis Encl

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Forwards LER 81-072/01T-0.Detailed Event Analysis Encl
ML20010E508
Person / Time
Site: Salem PSEG icon.png
Issue date: 08/27/1981
From: Uderitz R
Public Service Enterprise Group
To: Grier B
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20010E509 List:
References
NUDOCS 8109040205
Download: ML20010E508 (3)
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LER-1981-072, Forwards LER 81-072/01T-0.Detailed Event Analysis Encl
Event date:
Report date:
2721981072R00 - NRC Website
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1 Public Service Electric and Gas Con.; any 80 Park Plaz Newark, N.J. 07101 Prune 201/430-7000 August 27, 1981 Mr. Boyce H. Grier kp Director of USNRC Office of Inspection and Enforcement 1

Region 1

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I lU 631 Park Avenue

,N King of Prussia, Pennsylvania 19406 6

SEP 0 C 19815 73

Dear Mr. Grier:

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LICENSE NO. DPR-70 i

DOCKET NC. 50-272 b

REPORTABLE OCCURRENCE 81-72/0lT 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 81-72/0lT.

This report is required within fourteen (14) days of the occurrence.

Sincerely yourc,

/[

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R. A. Uderit/

General Manager -

Nuclear Production CC:

Director, Office of Inspection and Enforcement (40 copies)

Director, Office of Management Information and Program Control

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(3 copies)

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8109040205 810827

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LER 81-72/0lT August 27, 1981 ANALYSIS OF OCCURRENCE:

Technical specification 3.6.2.3.a requires with:

One group of containment cooling fans inoperable and both Containment Spray Systems operable, restore the inoperable group of cooling fans to operable status within 7 days 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 />.

Technical specification 3.6.2.3.b requires with:

Two groups of containment cooling fans inoperable, and both l

Containment Spray Systems operable, restore at least one group of cooling fans 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 i

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 />.

Restore both groups of cooling fans to operable status within 7 days of initial loss 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 withi.. Lha following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

CORRECTIVE ACTION

The fourth secondary cooling coil from the top on No. 14 CFCU and the bottom primary coil on No. 12 CFCU were isolated from the remainder of the coils by installing blank flange inserts between the service water inlet and outlet flanges.

As per engineering analysis, it is possible to isolate an individual cooler like this while retaining acceptable efficiency of the cooler.

These coolers will be replaced during the next scheduled outage; however, no supplementary report will be issued.

Action statement 3.6.2.3.a was terminated at 2125 hours0.0246 days <br />0.59 hours <br />0.00351 weeks <br />8.085625e-4 months <br /> on August 13,.981.

Action statement 3.6.2.3.b was terminated at 0510 hours0.0059 days <br />0.142 hours <br />8.43254e-4 weeks <br />1.94055e-4 months <br /> on August 14, 1981.

FAILURE DATA:

Westinghouse Coil Cooler Spin No. RCMECP Prepared By J.

Varga

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Manager - SalemiGenerating Station SORC Meeting No.

81-77

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Report Number:

81-72/0lT l

1 Report Date:

August 27, 1981 Occurrence Date:

8-13-81 Facility:

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

Containment Fan Coil Units (CFCU) - Servisa Water Leaks.

This report was initiated by Incident Reports81-327 and 81-328.

L CONDITIONS PRIOR TO OCCURRENCE:

t Mode 1 - Rx Power 95% - Unit Load 1030 MWe DESCRIPTION OF OCCURRENCE:

During the 0800-1600 shift on August 13, 1981, during a routine containment inspection, an operator discovered a service water leak of approximately 1 gallon per minute emanating from a pin point hole on the fourth secondary cooling coil from the top, on the No. 14 CFCU.

In accordance with NRC IE Bulletin 80-24, the NRC was notified i

of the service water leak by telephone with written notification made the following day.

No. 14 CFCU was removed from service and the service water isolated.

Action statement 3.6.2.3.a was entered at 1245 hours0.0144 days <br />0.346 hours <br />0.00206 weeks <br />4.737225e-4 months <br /> August 13, 1981, after declaring the CFCU inoperable due to service water isolation.

During the 1600-2400 shift on August 13, 1981, during a routine containment inspection, an operator discovered a service water leak.

of approximately.75 gallons per minute emanating from the bottom primary cooling coil on the No. 12 CFCU.

The NRC was again notified at 1923 hours0.0223 days <br />0.534 hours <br />0.00318 weeks <br />7.317015e-4 months <br /> and written notification was made the following day.

No. 12 CFCU was removed from service and the service water isolated.

I i

Action statement 3.6.2.3.b was entered at 1920 hours0.0222 days <br />0.533 hours <br />0.00317 weeks <br />7.3056e-4 months <br /> on August 13, 1981, after declaring the CFCU inoperable since both No. 14 and 12 CFCU were inoperable.

These occurrences constituted operation in a degraded mode in accord-an.e with technical specification 6.9.1.9.b.

}

f DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

l l

Equipment failure.

The fourth secondary cooling coil from the top on No. 14 CFCU had developed a pin point hole.

The bottom primary cooling coil on the No. 12 CFCU had developed a leak.

k

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