05000311/LER-1982-096, Forwards LER 82-096/03L-0.Detailed Event Analysis Encl

Forwards LER 82-096/03L-0.Detailed Event Analysis Encl

ML20065E675
Person / Time
Site:	Salem
Issue date:	09/16/1982
From:	Midura H Public Service Enterprise Group
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20065E677	List: 05000311/LER-1982-096, Forwards LER 82-096/03L-0.Detailed Event Analysis Encl 05000311/LER-1982-096-03, /03L-0:on 820831,containment Fan Coil Unit 23 Declared Inoperable When Operator Received Indication of Low Svc Water Flow.Caused by Silt Buildup in Cooling Coils.Flow Control Valve Cycled & Unit Tested Satisfactorily
References
NUDOCS 8210010144
Download: ML20065E675 (3)

LER-1982-096, Forwards LER 82-096/03L-0.Detailed Event Analysis Encl

Event date:
Report date:
3111982096R00 - NRC Website

text

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O PSEG Public Service Electric and Gas Company P.O. Box E Hancocks Bridge, New Jersey 08038 Salem Generating Station September 16, 1982 e

Mr.

R.

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

' Dear Mr. Haynes:

LICENSE NO. DPR-75 DOCKET NO. 50-311 REPORTABLE OCCURRENCE 82-096/03L Pursuant to the requirements of Salem Generating Station Unit No.

2, Technical Specifications, Section 6.9.1.9.b, we are submitting Licensee Event Report for Reportable Occurrence 82-096/03L.

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

Sincerely yours,

/

U b""

H.

J.

Midura General Manager -

Salem Operations RH:ksyg i

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Distribution 8210010144 820916 PDR ADOCK 05000311 U

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The Energy People p

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Report Number:

82-096/03L Report Date:

09-16-82 Occurrence Date:

08-31-82 Facility:

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

Containment Cooling System - No. 23 Containment Fan Coil Unit - Inoperable.

This report was initiated by '.ncident Report 82-242.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 1 - Rx Power 82% - Unit Load 890 MWe.

DESCRIPTION OF OCCURRENCE:

At 1835 hours0.0212 days <br />0.51 hours <br />0.00303 weeks <br />6.982175e-4 months <br />, August 31, 1982, during performance of routine surveillance, the Control Room Operator received indication of low service water flow on No. 23 Containment Fan Coil Unit (CFCU).

When the CFCU was put in the low speed mode, service water flow was less than the required 2500 GPM.

No. 23 CFCU was declared inoperable and Limiting Condition for Operation Action Statement 3.6.2.3a was entered at 1835 hours0.0212 days <br />0.51 hours <br />0.00303 weeks <br />6.982175e-4 months <br />.

Both containment spray systems were operable throughout the occurrence.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

Investigation revealed that the cause of this occurrence was silt build up in the CFCU cooling coils which restricted service water flow.

ANALYSIS OF OCCURRENCE:

The CFCU's operate in conjunction with the containment spray systems to remove heat and radioactive contamination from the containment atmosphere in the event of a design basis accident.

Operability of either all fan coil groups or of both containment spray systems is necessary to ensure offsite radiation dose is maintained within the limits of 10CFR100.

Because redundant cooling capability was provided by the containment spray systems, no risk to the health or safety of the public was involved.

The occurrence, therefore, consti-tuted operation in a degraded mode permitted by a limiting condition for operation, and is reportable in accordance with Technical Specification 6.9.1.9.b.

LER 82-096/03L.

ANALYSIS OF OCCURRENCE:

Action Statement 3.6.2.3a requires:

With one group of containment cooling fans inoperable, restore the inoperable group of cooling fans to operable status within the next 7 days, or be in 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 />.

i

- CORRECTIVE ACTION:

1 The service water flow control valve was cycled and the CFCU was tested satisfactorily.

At 1022 hours0.0118 days <br />0.284 hours <br />0.00169 weeks <br />3.88871e-4 months <br />, September 1,

1982, No. 23 CFCU was declared operable and Limiting Condition for Operation Action Statement 3.6.2.3a was terminated.

i FAILURE DATA:

Not Applicable.

Prepared By R.

Heller b

General Manager -

SORC Meeting No.

82 84

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