05000272/LER-1982-074, Forwards LER 82-074/04L-0.Detailed Event Analysis Encl

Forwards LER 82-074/04L-0.Detailed Event Analysis Encl

ML20063N931
Person / Time
Site:	Salem
Issue date:	09/22/1982
From:	Midura H Public Service Enterprise Group
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20063N932	List: 05000272/LER-1982-074, Forwards LER 82-074/04L-0.Detailed Event Analysis Encl 05000272/LER-1982-074-04, /04L-0:on 820903,indication of Unplanned Release Through Plant Vent Received.Three Individuals Contaminated During Attempts to Locate Source.Caused by Door Hitting Against Drain Valve 1CV332,causing Valve to Loosen & Open
References
NUDOCS 8210070368
Download: ML20063N931 (3)

LER-1982-074, Forwards LER 82-074/04L-0.Detailed Event Analysis Encl

Event date:
Report date:
2721982074R00 - NRC Website

text

' O PSEG Public Service Electric and Gas Company P.O. Box E Hancocks B idge, New Jersey 08038 Salem Geerating Station September 22, 1982 1

Mr.

R.

C. Haynes i

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 82-074/04L Pursuant to the requirements of Salem Generating Station Unit No.

1, Environmental Technical Specifications, Section 5.6.2.3.3, we are submitting Licensee Event Report for Reportable Occurrence 82-074/04L.

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

Sincerely yours,

[ h45 %

H.

J.

Midura General Manager -

Salem Operations

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RH:kss CC:

Distribution 8210070368 820922

,PDR ADOCK 05000272

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Report Number:

82-074/04L Report Date:

09-22 Occurrence Date:

09-03-82 Facility:

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

Unplanned Release from the Plant Vent.

This report was initiated by Incident Report 82-270.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 1 - Rx Power-99% - Unit Load 1070 MWe.

DESCRIPTION OF OCCURRENCE:

At 0930 hours0.0108 days <br />0.258 hours <br />0.00154 weeks <br />3.53865e-4 months <br />, September 3, 1982, during routine operation the Control Room Operator. observed a significant increase oof the Plant Vent Effluent Monitor 1R16 indication.

The indication had risen from 3000 CPM to 30,000 CPM..

It was thought that the Reactor Coolant Filter could be the source of the release and the filter was bypassed.. However, there was no decrease of Monitor 1R16 indication, and three personnel

'became contaminated on the 64' Elevation of the Auxiliary Building.

Therefore, No. 11 Waste Gas Compressor was thought to be the source of the release and the Reactor Coolant Filter was'un-

- isolated.

- No.- 31 Waste Gas Compressor was isolated and tagged out, however, Monitor 1R16 indication did not decrease, and investigation for the source of the release continued. Although

'the calculated release rate was below the limit allowed by the 1

Technical Specifications, it was higher than the normal indication, and the source of the release was not found.

This event constituted an. unplanned release,.therefore, at 1345 hours0.0156 days <br />0.374 hours <br />0.00222 weeks <br />5.117725e-4 months <br />, September 3, 1982, s

a significant event was declared and notifications were made in accordance with Emergency Procedure (EP) I-l Attachment 3.

At -

2000 hours0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br />,.an operator discovered.that Valve 1CV332, a drain valve,in the VCT vent line, was in the open position.

The operator immediately shut the valve and Monitor 1R16-indication decreased rapidly.

It was initially suspected that this occurrence involved tampering with the' valve.- Therefore, at 2240 hours0.0259 days <br />0.622 hours <br />0.0037 weeks <br />8.5232e-4 months <br />, an unusual event was declared and notifications were madI3}naccordance-

- with EPI-1.

It was determined that 7.5' curies of Xe had been released, which was.well below the limits specified by the Environ-1mentalLTechnical Specifications.-

's

_a

.lMER 82-074/04LL '

,N 2>

. DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

. Investigation revealed that this occurrence was caused by a door. repeatedly hitting against the valve, which caused the

+'

Jvalve'to loosen up and open.

ANALYSIS'OF OCCURRENCE:

The release of radioactive-materials in gaseous waste effluents to unrestricted areas shall not exceed the concentration limits specified in 10CFR20 and should be as low as practicable in accordance with the requirements of 10CFR50.36a.

These speci-fications provide reasonable assurance that the resulting air 0

dose from the site due to noble' gases, to an individual in an unrestricted area, will not exceed the limits of 10CFR20.

Environmental Technical Specification 5.6.2.3.3 requires:

4 i

Any unplanned or uncontrolled off-site release of y;

radioactive materials in excess of 0.5 curie in liquid or in excess of 5 curies of noble gases, or 0.02 curie i

of radioiodines in gaseous form requires notification of the NRC.

This notification must be made by a written report within 30 days of the occurrence.

This i

report shall describe the event, identify the causes, and report actions to prevent recurrence.

1 As noted, the total amount of curies released was in the form of a noble gas and was well within the limits specified by the Environ-I mental Technical Specifications.

Therefore, this occurrence involved.no risk to the health of the general public.

However, this occurrence constituted an unplanned release of greater than j

5 curies of noble gas and is reportable in accordance with j.

Environmental Technical Specification 5.6.2.3.3..

l

CORRECTIVE ACTION

ll The contaminated personnel were properly decontaminated and given whole body monitoring.

No significant exposures were received.

t T As noted, Valve _ lCV332 was shut and the release was stopped.

Caps were installed on the VCT vent lines in both units.

The swing of the door. was reversed so that it cannot strike the valve.

The p

. Plant Effluent' Monitor 1R16 setpoint was reduced from-500,000 cpm-l

.tofl0,000 cpm to provide.early release warning capability.

~

I FAILURE DATA:

Grinnel. Corporation 3/ " Saunders Valve-a f

- Prepared'By R.' Heller

'/

~Gend'ral Manager -

Salem' Operations f-

.SORC. Meeting No.

l82-85

/