05000272/LER-1982-033, Forwards LER 82-033/03L-0.Detailed Event Analysis Encl

Forwards LER 82-033/03L-0.Detailed Event Analysis Encl

ML20053E986
Person / Time
Site:	Salem
Issue date:	05/19/1982
From:	Midura H Public Service Enterprise Group
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20053E987	List: 05000272/LER-1982-033, Forwards LER 82-033/03L-0.Detailed Event Analysis Encl
References
NUDOCS 8206100271
Download: ML20053E986 (3)

LER-2082-033, Forwards LER 82-033/03L-0.Detailed Event Analysis Encl

Event date:
Report date:
2722082033R00 - NRC Website

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D PSEG .

PutAc Setvice Electric and Gas Company P.O. Box E Hancocks Bridge, Neu Jersey 08038 Salem Generating Station May 19, 1982 Mr. R. C. Haynes Regional Administrator USNRC Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406 De a r '4r . Haynes:

LICENSE NO. DPR-70 DOCKET NO. 50-272 REPORTABLE OCCURRENCE 82-033/03L Pursuant to the requirements of Salem Generating Station Unit No. 1, Technical Specifications, Section 6.9.1.9.b, we ar; submitting Licensee Event Report for Reportable Occurrence 82-033/03L. This report is required within thirty (30) days of the occurrence.

Sincerely yours, h[ 6" H. J. Midura General Manager -

Salem Operations RF:ks CC: Distribution 8206100271 820519 P_DR ADOCK 05000272 PDR u

Th- Enam PeoMe $6#

v , ,,

l Report Number: 82-033/03L Report Date : 05-19-82 Occurrence Date: 05-02-82 i

Facility: Salem Generating Station, Unit 1 Public Service Electric & Gas Company Hancocks Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

Axial Flux Difference - Out of the Target Band.

1 j This report was initiated by Incident Report 82-111.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 1 - Rx Power 89% - Unit Load 1020 MWe DESCRIPTION OF OCCURRENCE:

At 0910 hours0.0105 days <br />0.253 hours <br />0.0015 weeks <br />3.46255e-4 months <br />, May 2, 1982, the No. 13A Travelling Screen High Differential Pressure Trip alarm was received, and the Control Room Operator observed a decreasing condenser vacuum. A rapid load reduction was commenced to maintain the vacuum.

At 0915 hours0.0106 days <br />0.254 hours <br />0.00151 weeks <br />3.481575e-4 months <br />, the operator observed that the axial flux difference (AFD) was outside the +6,-9% target band, and Action Statement 3.2.1.2.a was entered.

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

5 DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

The high differential pressure was caused by grass and debris which had clogged the travelling screen.

ANALYSIS OF . OCCURRENCE :

Technical Specification 3.2.1.2.a requires:

I With between 50 and 90% of rated thermal power, power operation may continue provided

1) The indicated AFD has not been outside of the +6,-9% target band for more than 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> penalty deviation cumulative during the previous 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, and

2) The indicated AFD is within the limits shown

' on Figure 3.2-1 of the Technical Specifications.

Otherwise, reduce thermal power to less than 50% of rated thermal power within 30 minutes, and reduce the Power Range Neutron Flux - High Trip setpoints to less than or equal j to 55% of rated thermal power within the next 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.

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