05000311/LER-1981-116, Forwards LER 81-116/03L-0.Detailed Event Analysis Encl

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Forwards LER 81-116/03L-0.Detailed Event Analysis Encl
ML20038D016
Person / Time
Site: Salem 
Issue date: 12/02/1981
From: Midura H
Public Service Enterprise Group
To: Haynes R
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20038D017 List:
References
NUDOCS 8112140343
Download: ML20038D016 (3)
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LER-1981-116, Forwards LER 81-116/03L-0.Detailed Event Analysis Encl
Event date:
Report date:
3111981116R00 - NRC Website
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text

O PSEG Pub!!c Serv'ce Electric and Gas Company P.O. Box 168 H ancocks Bridge, New Jersey 08038 Salem Generating Station December 2, 1981 DILY'l/,N,

,g Mr.

R.

C.

Haynes O

Director of USNRC 31 %, Oj 1

[O Office of Inspection and Enforcement

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O Region 1 r ';

631 Park Avenue "A

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7-King of Prussia, Pennsylvania 19406 cf

.N.

Dear Mr. Haynes:

' i ' "'

LICENSE NO. DPR-75 DOCKET NO. 50-311 REPORTABLE OCCURRENCE 81-ll6/03L 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-ll6/03L.

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

Sincerely yours,

%f ""

,/<,

/

H.

J.

Midura General Manager -

Salem Operations l

CC:

Distribution g) bl l

0 n

8112140343 811202 PDR ADOCK 05000311 S

PDR

Deport Number:

81-116/03L Report Date:

12-2-81 Occurrence Date:

11-7-81 Facility:

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

No. 22 Charging Pump - Inoperable.

This report was initiated by Incident Report 81-451 CONDITIONS PRIOR TO OCCURRENCE:

Mode 1 - Rx Power 100% - Unit Load 1170 MWe DESCRIPTION OF OCCURRENCE:

On November 7, 1981, during normal operation, No. 22 Charging Pump tripped electrically on long-time overcurrent.

One restart was attempted and the pump again tripped.

The pump was declared inoperable and at 0527 hours0.0061 days <br />0.146 hours <br />8.713624e-4 weeks <br />2.005235e-4 months <br /> Action Statements 3.1.2.4 and 3.5.2.a were entered.

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 No. 22 Charging Pump failing to start was a broken impeller shaft in the pump.

ANALYSIS OF OCCURRENCE:

Technical Specification 3.1.2.4 requires:

With only one charging pump operable, restore at least twa charging pumps 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 and borated to a shutdown margin equivalent to at least 1%

Delta K/K at 200 degrees Fahrenheit within the next 7 days or be in cold shutdown within the next 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

Technical Specification 3.4.2.a requires:

With one ECCS subsystem inoperable, restore the subsystem 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 het shutdown within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

On November 9, 1981, permission was obtained from ARC to extend the above action statements for 48 additional nouts in order to complete repairs.

LER 81-ll6/03L -

CORRECTIVE ACTION

A new rotating assembly was installed in the pump and surveillance procedure 4.0.5(P) was performed satisfactorily.

The charging pump was declared operable, returned to service, and Action Statements 3.1.2.4 and 3.5.2.a were terminated at 2330 hours0.027 days <br />0.647 hours <br />0.00385 weeks <br />8.86565e-4 months <br />, November 10, 1981.

A full flow test will be performed the next time the unit is in mode 5.

FAILURE DATA:

Pacific Pump Model RLlJ "

Prepared By K. Whitcomb

,/c hr E u.u Gene (al Manager -

Salem Operations SORC Meeting No.81-123

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