05000272/LER-1982-049, Forwards LER 82-049/03L-0.Detailed Event Analysis Encl

Forwards LER 82-049/03L-0.Detailed Event Analysis Encl

ML20063B927
Person / Time
Site:	Salem
Issue date:	08/12/1982
From:	Midura H Public Service Enterprise Group
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20063B931	List: 05000272/LER-1982-049, Forwards LER 82-049/03L-0.Detailed Event Analysis Encl
References
NUDOCS 8208260320
Download: ML20063B927 (3)

LER-2082-049, Forwards LER 82-049/03L-0.Detailed Event Analysis Encl

Event date:
Report date:
2722082049R00 - NRC Website

text

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O PSEG Public Service Electric and Gas Company P.O. Box E Hancocks Bridge, New Jersey 08038 Salem Generating Station August 12, 1982 i

Mr. R. C. Ilaynes Regional Administrator USNRC Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406

Dear Mr. Haynes:

LICENSE NO. DPR-70

DOCKET NO. 50-272 REPORTABLE OCCURRENCE 82-049/03L Pursuant to the requirements of Salem Generating Station ~

Unit No. 1, Technical Specifications, Section 6.9.1.9.b, we are submitting Licensee Event Report for Reportable Occurrence 82-049/03L. This report is required within thirty (30) days of the occurrence.

Sincerely yours, k *%),

1. J. Midura General Manager -

Salem Operations RF:ks ,$

CC: Distribution 8208260320 820812 PDR ADOCK 05000272 S PDR Jh The Energy People

% 2tM UOM) 11 fit

Re~ port Number: 82-049/03L Report Date: 08-12-82 Occurrence Date: 07-24-82 Facility: Salem Generating Station, Unit 1 Public Service Electric & Gas Company Hancocks Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

Hot Leg Pressure Wide Range Instrument - Inoperable.

This report was initiated by Incident Report 82-193.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 1 - Rx Power 99% - Unit Load 1080 MWe.

DESCRIPTION OF OCCURRENCE:

At 0900 hours0.0104 days <br />0.25 hours <br />0.00149 weeks <br />3.4245e-4 months <br />, July 24, 1982, during routine operation, the Control Room Operator noticed that the Hot Leg Pressure Wide Range indication was indicating a lower pressure than actual Reactor Coolant System (RCS) pressure. The channel was declared inoperable, and Limiting Condition for Operation 3.3.3.7 Action 1 was entered. Because the instrument output is also utilized in the RCS subcooling margin monitor, the monitor was declared inoperable and Limiting Condition for Operation 3.3.3.7 Action 5 was entered. The problem was intermittent, and a strip chart recorder was connected to the channel to confirm that the operation was erratic. The redundant wide range RCS pressure instrument was operable throughout the occurrence. Steam tables were available in the Control Room, and RCS wide range outlet temperature indic ation was operable.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

i The erratic pressure indication was due to the failure of e printed circuit board in the pressure transmitter.

ANALYSIS OF OCCURRENCE:

The operability of accident monitoring instrumentation insures that, during and following an accident, important plant parameters can be monitored.

'LER 82-049/03L O ANALYSIS OF OCCURRENCE: (Continued)

Due to the. availability of redundant monitoring capabilities, no risk to the health and safety of the public was involved. The occurrence constituted 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.

Limiting Condition for Operation 3.3.3.7 Action 1 requires:

With the number of operable accident monitoring channels less than the required number of channels, restore the inoperable channel (s) to operable status within 7 days, or be in hot shutdown within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

Action 5 requires:

With the number of operable RCS subcooling margin monitor channels less than the required number, operation may proceed provided that steam tables are available in the Control Room and an RCS wide range pressure and outlet temperature channel each are operable to provide an alternate means of calculating RCS subcooling margin.

CORRECTIVE ACTION:

As noted, steam tables were already available in the Control Room and the redundant pressure and outlet temperature instruments were operable, in compliance with Action 5. The transmitter printed circuit boards were replaced, and the channel was satisfactorily recalibrated. Strip chart recordings showed no further abnormalities.

At 0810 hours0.00938 days <br />0.225 hours <br />0.00134 weeks <br />3.08205e-4 months <br />, July 28, 1982, the Hot Leg Wide Range Pressure instrument was declared operable, and Limiting Condition for Operation 3.3.3.7 Actions 1 and 5 were terminated.

FAILURE DATA:

Rosemount, Inc.

Pressure Transmitter Model 1153 Prepared By R. Frahm .f ff 4% --

General Managdr"-

[ Salem Operations SORC Meeting No. 82-75