05000311/LER-1981-110, Forwards LER 81-110/03L-0.Detailed Event Analysis Encl

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Forwards LER 81-110/03L-0.Detailed Event Analysis Encl
ML20033B577
Person / Time
Site: Salem 
Issue date: 11/18/1981
From: Midura H
Public Service Enterprise Group
To: Haynes R
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20033B578 List:
References
NUDOCS 8112010538
Download: ML20033B577 (3)
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LER-1981-110, Forwards LER 81-110/03L-0.Detailed Event Analysis Encl
Event date:
Report date:
3111981110R00 - NRC Website
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text

O PSEG Public Service Electric and Gas Company P.O. Box 168 Hancocks Bridge, New Jersey 08038 Safem Generating Station November 18, 1981 Mr.

R. C.

Haynes U

g.

Director of USNRC A/

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'c3 Office of Inspection and Enforcement Region 1 LII King of Prussia, Pennsylvania 19406

- D' NOV3 01981* p.

631 Park Avenue v.s. g.T " y/

Dear Mr. Haynes:

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LICENSE NO. DPR-75 W

DOCKET NO. 50-311 REPORTABLE OCCURRENCE 81-110/03L 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 81-110/03L.

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

Sincerely yours, H.

J. Midura General Manager -

Salem Operations CC:

Distribution lf.h 1 fiim The Energy People 8112010538 811118 os2ieuu PDR ADOCK 05000311 t,

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Report Number:

81-110/03L Report Date:

11-18-81 Occurrence Date:

10-26-81 Facility:

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

No. 21 and No. 23 Containment Fan Coil Unit (CFCU) - Inoperable.

This report was initiated by Incident Report 81-424.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 1 -- Rx Power 99% - Unit Load 1160 MWe DESCRIPTION OF OCCURRENCE:

On October 26, 1981, while attempting to place No. 21 and No. 23 CFCU in low speed accident mode, the Control Operator noticed a low flow indication.

The units were declared inoperable and Action Statement 3.6.2.3.b was entered at 0356 hours0.00412 days <br />0.0989 hours <br />5.886243e-4 weeks <br />1.35458e-4 months <br />.

This occurrence constituted operation in a degraded mode in accordance with Technical Specification 6.9.1.9.b.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

The cause of the low flow indications was silt in the transmitter sensing lines.

ANALYSIS OF OCCURRENCE:

Technical Specification 3.6.2.3.b requires:

With two groups of containment cooling fans inoperable, and both Containment Spray Systems operable, restore at least one group of 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 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 within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

LER 81-110/03L.,)

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CORRECTIVE ACTION

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The flow transmitter sensing linss,were blown down and both

.j i units were. cycled and tested satisfactorily.

At-1445 and

'l 1840 hours0.0213 days <br />0.511 hours <br />0.00304 weeks <br />7.0012e-4 months <br />, respectively.,.-No. 21 a'nd 'No. 23 CFCU's were.

declared operable and Action Statement 3.6.2 3.b was terminated.

l A program is in effect to blow down'all transmitters every- ~

- week and to cycle all fans.to lowcspeed,-high flow mode daily to verify operability.

FAILURE DATA:

15 Fischer and Porter Co.-

Differential - Pressure' Flow Transsitter Model 10B2495

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Prepared By K. Whitcomb g

Generaf Manager -

Salem Operations:

SORC Meeting No.

81-119B I

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