05000311/LER-1981-099, Forwards LER 81-099/03L-0.Detailed Event Analysis Encl

Forwards LER 81-099/03L-0.Detailed Event Analysis Encl

ML20031E017
Person / Time
Site:	Salem
Issue date:	10/02/1981
From:	Midura H Public Service Enterprise Group
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20031E018	List: 05000311/LER-1981-099, Forwards LER 81-099/03L-0.Detailed Event Analysis Encl 05000311/LER-1981-099-03, /03L-0:on 810903,low Svc Water Indication Noted on Containment Fan Coil Unit 23 in Slow Speed Mode.Caused by Silt in Transmitter.Transmitter Blown Down & Valve Readjusted
References
NUDOCS 8110140466
Download: ML20031E017 (3)

LER-1981-099, Forwards LER 81-099/03L-0.Detailed Event Analysis Encl

Event date:
Report date:
3111981099R00 - NRC Website

text

b 0 sy O PSEG Putalic %rvice E cctric and Gas Company P.O. Box 168 Hancocks Bride;, New Jersey 08038 Salern Generating Station October 2, 1981 4

/

Y 3

W Mr.

R.

C.

Haynes Director of USNRC J='

Office of Inspection and Enforcement 9.

00T1' 31981* 4 Region 1 s,

p 631 Park Avenue

'y sommaassen King of Prussia, Pennsylvania 19406 g

Dear Mr..taynes:

f LICENSE NO. L')R-7 5 DOCKET NO. 50-311 REPORTABLE OCCURRENCE 81-99/03L 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 81-99/03L.

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

Sincerely yours, 6:

"f H.

J. Midura General Manager _

Salem Operations CC:

R. A. Uderitz General Manager - Nuclear Production Director, Office of Inspection and Enforcement (30 copies)

Director, Office of Management p

Information and Program Control (3 copies) f 8110140466 811002 PDR ADOCK 05000311 S

PDR The Energy People 952ia9 02mico

Report Number:

81-99/03L Report Date:

10-2-81 Occurrance Date:

9-3-81 Facility:

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

Containment Fan Coil Unit - Inoperable - Low Service Water Flow.

This report was initiated by incident report 81-363.

CONDITIONS PRIOR,]O OCCURRENCE:

Mode 3 - Rx Power 0% - Unit Load 0 MWe DESCRIPTION OF OCCURRENCE:

On September 3, 1981 the control room operator noticed low service water flow indication on No. 23 Containment Fan Coil Unit (CFCU) in the slow speed mode.

No. 23 CFCU was declared inoperable and action statement 3.6.2.3.a was entered at 1950 hours0.0226 days <br />0.542 hours <br />0.00322 weeks <br />7.41975e-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 service water low flow indication was the flow transmitter was plugged with silt, plus control valve 23SW57 was not opening fully.

ANALYSIS OF OCCURRENCE:

Technical specification 3.6.2.3.a requires:

With one group of containment cooling fans inoperable and both containment s ay systems operable, restore the inoperable group or 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 />.

CORRECTIVE ACTION

The flow transmitter was blown down to remove the silt.

Control valve 23SW57 was readjusted for full-stroke operation.

Both components were tested satisfactorily and returned to service.

At 0255 hours0.00295 days <br />0.0708 hours <br />4.21627e-4 weeks <br />9.70275e-5 months <br />, September 4, 1981 action statement 3.6.2.3.a was terminated.

A program is in effect to blow down all transmitters every two weeks.

However, this program is presently being reevaluated in an effort to increase it's effectiveness.

LES 81-99/03L.

FAILURE DATA:

Fischer and Porter Co.

Differential-Pressure Flow Transmitter Model 10B2495 Masoneilan International, Inc.

10" control valve Prepared By F.

Dickey de p-Manager - Salem ' Generating Station SORC Meeting No.81-100 I