PNO-I-86-080, on 860929,licensee Commenced Shutdown Upon Discovering Water Leakage Into Main Turbine Electrohydraulic Control Oil Sys.Return to Svc Not Expected for Approx 5 Days Following Determination of Source of Leakage

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PNO-I-86-080:on 860929,licensee Commenced Shutdown Upon Discovering Water Leakage Into Main Turbine Electrohydraulic Control Oil Sys.Return to Svc Not Expected for Approx 5 Days Following Determination of Source of Leakage
ML20206U224
Person / Time
Site: Peach Bottom Constellation icon.png
Issue date: 09/30/1986
From: Eselgroth P
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
To:
References
PNO-I-86-080, PNO-I-86-80, NUDOCS 8610070386
Download: ML20206U224 (2)


DCS No: 050277860929 Date: September 30, 1986 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-I-86-80 This preliminary notification constitutes EARLY notice of eve'nts of POSSIBLE safety or 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.

Facility: Licensee Emergency Classification:

Philadelphia Electric Co. Notification of Unusual Event Peach Bottom Atomic Power Station Alert Unit 2 Site Area Emergency D21ta, Pennsylvania General Emergency D/N 50-277 X Not Applicable

Subject:

UNPLANNED SHUTDOWN IN EXCESS OF 48 HOURS On September 29, 1986, at 12:55 a.m. the licensee commenced a shutdown of Peach Bottom Unit 2 following a discovery of water leakage into the main turbine Electro Hydraulic Control (EHC) oil system. The licensee suspects a turbine stop valve leak entering an oil drip pan as the source of water in-leakage.

As of 8:00 a.m. September 30, 1986, Unit 2 was in cold shutdown at 150*F. A return to service is not expected for approximately five days following a final determination of the in-leakage source and EHC oil system flushes.

The Commonwealth of Pennsylvania has been informed.

CONTACT: P. Eselgroth (215)488-1234 DRP:RI DRP:RI SLO:RI PAO:RI DRP:RI Es 1groth/pj Gallo Lohaus Abraham Kane 9/ /86 9/ /86 9/ /86 9/ /86 9/ /86 DISTRIBUTION:

H. St. MNBB Phillips E/W Willste Mail: ADM:0M8 Chairman Zech EDO ffRR 7E~ NMSS DOT:Trans only i Comm. Bernthal PA DIA RES j Comm. Roberts ELD AE00 i Comm. Asselstine l Comm. Carr ACRS Air Rights INP0 b0 S

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! SECY SP NSAC i CA

POR Regional Offices TMIResidentSection__//.'/l j RI Resident Office Licensee

(Reactor Licensees)

Region I Form 83 (Rev. July 1986) 0610070386 060930 k-! -080 PDR w-3 </ 4

DISTNBUTIONr O

llRC0CA LEAD 0P Please deliver H St addressees)

Chairman Zech Come Bernthal Come Roberts Comm Asselstine Come Carr ACRS SECY CA POR NRCRM EDO (Please make EDO internal distribution)

NRCRM,0RDAZ (Please make PA0 internal distribution)

NTCELD,Leadop (Please deliver to G. Cunningham)

NRCWM,MaryR (Please make internal distribution)

NRCIE Marylynn (To Mary Lynn Reardon)

NRCNRR, Krebs (Please make NRR internal distribution)

NRCRES,LEADOP (Please make internal distribution)

NRCADMW RichardG (Please make internal distribution)

NRCIE,AE00 (Please deliver copy to 0IA)

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NRCRII,Leadop (Please make Internal RII distribution)

NRCRIII,Leadop (Please make Internal RIII distribution)

NRCRIV,Leadop (Please make Internal RIV distribution)

NRCRV,Leadop (Please make Internal RV distribution)

Region I WPS Resident Office (Site PC) (If secretary is off FAX)

RI Office Services Section (Mail to ADMTDMB & 00T (transportation only)

FAX to INP0 NSAC TMI 2 Program Office State Programs (Please deliver to Wayne Kerr)