PNO-I-87-034, on 870423,plant Shutdown Commenced After Investigation Determined Cause for Failure of Electromatic Relief Valve Acoustic Monitor Was Inside Drywell.Cause Will Be Determined When Drywell Accessible

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PNO-I-87-034:on 870423,plant Shutdown Commenced After Investigation Determined Cause for Failure of Electromatic Relief Valve Acoustic Monitor Was Inside Drywell.Cause Will Be Determined When Drywell Accessible
ML20209D571
Person / Time
Site: Oyster Creek
Issue date: 04/24/1987
From: Bateman, Blough
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
To:
References
PNO-I-87-034, PNO-I-87-34, NUDOCS 8704290319
Download: ML20209D571 (1)


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' ,3h~'i DCS No: 5021987423 -

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- Date: 4

./24/87

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PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-I-87-34 >

ThispreliminarynotificNionconstitutesEARLYnoticeofeventsofPOSSIBLEsafety er public interest significance. The information is as initially received without verification or evaluation, and is basically all that is known by the Region I staff on this date.

%F acility: License Emergency Classification:

'GPU Nuclear Corporation Notification of Unusual Event

Oystar Creek Nuclear Generating Station Alert
Docket No. 50-219 Site Area Emergency

, Forked River, New Jersey General Emergency

_X Not Applicable

Subject:

SHUTDOWN EXPECTED TO EXCEED TWO DAYS

' A plant' shutdown commenced Thursday evening (4/23/87) after investigation determined th2 cause for the failure of an electromatic relief valve acoustic monitor (valve position indicator) was inside the drywell. The specific cause will be determined when the drywell becomes accessible af ter the plant cooldown and deinerting are complete.

'Because of unrelated problems being experienced with drywell temperatures, plans are to i replace the five drywell recirculation fan wheels and cooling coils which is estimated '

to take two weeks. Other maintenance jobs will be worked in parallel, including dry-well wall thickness measurements.

The resident inspectors will follow activities onsite. This PN is issued for informa-tion only. The Itcensee has issued a press release. The State of New Jersey has been notified.

CONTACT: (609) 693-0702 488-1146 Bateman Blough DISTRIBUTION:

H. St. MNBB Phillips _ E/W Willste Mail: ADM:DMB Chairman Zech EDO NRR IE NMSS DOT:Trans only Comm. Bernthal PA OIA RES Comm. Roberts ELD AE0D NRC Ops Crt Comm. Asselstine Comm. Carr ACRS Air Rights INPO----

SECY SP NSAC----

CA PDR Regional Offices TMI Resident Section RI Resident Office Licensee:

(Reactor Licensees)

Region I Form 83 (Rev. July 1986) 05 e,04g,031s ovo424 ei i

$ dis-o34 PW

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