05000311/LER-1982-099, Forwards LER 82-099/03L-0.Detailed Event Analysis Encl

Forwards LER 82-099/03L-0.Detailed Event Analysis Encl

ML20063N814
Person / Time
Site:	Salem
Issue date:	09/22/1982
From:	Midura H Public Service Enterprise Group
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20063N815	List: 05000311/LER-1982-099, Forwards LER 82-099/03L-0.Detailed Event Analysis Encl 05000311/LER-1982-099-03, /03L-0:on 820902,control Room Operator Received Indication of Low Svc Water Flow on Containment Fan Coil 23. Caused by Silt Buildup in Cooling Coils.Svc Water Flow Control Isolation Valve Cycled
References
NUDOCS 8210070246
Download: ML20063N814 (3)

LER-1982-099, Forwards LER 82-099/03L-0.Detailed Event Analysis Encl

Event date:
Report date:
3111982099R00 - NRC Website

text

r O PSEG Public Service Electric and Gas Company P.O. Box E Hancocks Bridge, New Jersey 08038 Salem Generating Station September 22, 1982 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 82-099/03L 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 82-099/03L.

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

Sincerely yours,

/

,W H.

J. Midura General Manager -

Salem Operations RH:ksfd[

CC:

Distribution IB210070246 820922 1

1 PDR ADOCK 05000311 wR PDR The Energy People gW 05 2189 (20f41181 -

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'il Report Number:

82-099/03L Report Date:

09-22-82 Occurrence Date:

09-02-82 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 Incident Report 82-256.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 1 - Rx Power 82% - Unit Load 900 MWe.

DESCRIPTION OF OCCURRENCE:

At 1350 hours0.0156 days <br />0.375 hours <br />0.00223 weeks <br />5.13675e-4 months <br />, September 2, 1982, during 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 into the low speed mode, service water t.ow was less than the required 2500 GPM.

No. 23 CFCU was declared inoperable and Limiting Condition for Operation Action State-ment 3.6.2.3a was entered at 1350 hours0.0156 days <br />0.375 hours <br />0.00223 weeks <br />5.13675e-4 months <br />.

Both containment spray systems were operable throughout the occurrence.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

The insufficient flow problem was determined to be due to silt build up in the low flow areas of the CFCU cooling coils.

This l

caused a restriction of service water flow.

I 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.

L

LER 82-099/03L.

' ANALYSIS OF OCCURRENCE:Action Stateraent 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 />.

CORRECTIVE ACTION

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

At 2019 hours0.0234 days <br />0.561 hours <br />0.00334 weeks <br />7.682295e-4 months <br />, September 2,

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

FAILURE DATA:

Not Applicable.

Prepared By R.

Heller

/

b

' Gen 6ral Manager -

Salem Operations SORC Meeting No.

82-85