05000272/LER-1982-065, Forwards LER 82-065/03L-0.Detailed Event Analysis Encl

Forwards LER 82-065/03L-0.Detailed Event Analysis Encl

ML20065C850
Person / Time
Site:	Salem
Issue date:	09/08/1982
From:	Midura H Public Service Enterprise Group
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20065C853	List: 05000272/LER-1982-065, Forwards LER 82-065/03L-0.Detailed Event Analysis Encl 05000272/LER-1982-065-03, /03L-0:on 820818,operator Received Alarms on Radiation Monitoring Sys,Rendering Channels 1R11A,1R12A & 1R12B Inoperable.Caused by Torn Filter Paper Jamming in Unit.Paper Replaced & Sys Tested Satisfactorily
References
NUDOCS 8209240325
Download: ML20065C850 (3)

LER-1982-065, Forwards LER 82-065/03L-0.Detailed Event Analysis Encl

Event date:
Report date:
2721982065R00 - NRC Website

text

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. O PSIEG Pubhc Service Efectric and Gas Company _ P.O. Box E Hancocks Bridge, New Jersey 08038 Salem Generating Station September 8, 1982 i

i 4

i Mr.

R.

C.

Ilaynes Regional Administrator USNRC Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406

Dear Mr. Ilaynes :

LICENSE NO. DPR-70 DOCKET NO. 50-272 REPORTABLE OCCURRENCE 82-065/03L 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 82-065/03L.

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

Sincerely yours, ll,

c N" H.

J.

Midura General Manager -

Salem Operations l-RH:ks p

CC:

Distribution l

l 1

The Fnorov Pennlo t*

B209240325 820900 PDR ADDCK 05000272 z2im2co.n n si S.

P. DR.

Report Number:

82-065/03L Report Date:

09-08-82 Occurrence Date:

08-18-82 Facility:

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

Radiation Monitoring System - Inoperable.

This report was initiated by Incident Report 82-244.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 1 - Rx Power 100% - Unit Load 1070 MWe.

DESCRIPTION OF OCCURRENCE:

At 1830 hours0.0212 days <br />0.508 hours <br />0.00303 weeks <br />6.96315e-4 months <br />, August 18, 1982, during routine operation, the Control Room Operator received an "APD Trouble" Alarm ard a " Filter Failure" Alarm on the Radiation Monitoring System.

An attempt was made to clear the alarms by advancing the filter paper, however, the alarms did not clear.

The Radiation Monitoring System, Channels 1RllA, 1R12A, and 1R12B were declared inoperable and Limiting Condition for Operation Action Statement 3.3.3.lb Actions 20 and 22 were entered at 1830 hours0.0212 days <br />0.508 hours <br />0.00303 weeks <br />6.96315e-4 months <br />.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

Investigation of the occurrence revealed the problem to be a torn filter paper which jammed in the unit.

ANALYSIS OF OCCURRENCE:

The Radiation Monitoring System provides indication of the concentration of radioactive gas and particulate in containment for the purpose of detecting Reactor Coolant System (RCS) leakage.

It is also used to ensure that the release rate during purging or pressure relief is maintained below limits specified by the Technical Specifications; a high radioactivity level initiates automatic closure of the containment purge duct and pressure relief isolation valves.

a

LER 82-065/03L *'

4 ANALYSIS OF OCCURRENCE:Redundant RCS leak detection capability is provided by the Containment Sump Monitoring System.

Backup for the contain-ment purge and pressure functions is provided by the Plant Vent Effluent Monitor 1Rl6, and relies on operator action to isolate the. vent path.

Failure of the Radiation Monitoring System, there-fore, constitutes 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.

Due to backup monitoring capability, the event resulted in no risk to the health or safety of the general public.

Limiting Condition for Operation 3.3.3.lb Action 20 requires:

With only two of the RCS leakage detection systems operable, operation may continue for up to 30 days provided grab samples of the containment atmosphere are obtained and analyzed at least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> when the required gaseous and/or particulate monitoring system is inoperable; otherwise 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 />.

Action 22 requires:

With the contaimment purge and pressure vacuum relief isolation system inoperable, close each of the purge and pressure relief penetrations providing direct access from the containment to the outside atmosphere.

l

CORRECTIVE ACTION

i The containment purge duct and pressure relief isolation valves were maintained closed, in compliance with the limiting condition for operation.

The filter paper-was replaced and the Radiation Monitoring System was tested satisfactorily.

At 2200 hours0.0255 days <br />0.611 hours <br />0.00364 weeks <br />8.371e-4 months <br />, August 18, 1982, the Radiation Monitoring. System, Channels 1RllA, 1R12A, and 1R12B were declared operable, and Limiting Condition for Operation Action Statement 3.3.3.lb Actions 20 and 22 were terminated.

FAILURE DATA:

Not Applicable.

Prepared By R.

Heller denefal Ranager -

Salem Operations SORC Meeting No.

82-82