PNO-V-86-043, on 860715,criticality Achieved Following Eighth Refueling Outage.Unit Shutdown for 236 Days Following 851121 Loss of Power & Water Hammer Event.Unit Scheduled to Go on-line After Completion of Low Power Physics Testing

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PNO-V-86-043:on 860715,criticality Achieved Following Eighth Refueling Outage.Unit Shutdown for 236 Days Following 851121 Loss of Power & Water Hammer Event.Unit Scheduled to Go on-line After Completion of Low Power Physics Testing
ML20203D546
Person / Time
Site: San Onofre Southern California Edison icon.png
Issue date: 07/15/1986
From: Huey R, Narbut P
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
To:
References
PNO-V-86-043, PNO-V-86-43, NUDOCS 8607210244
Download: ML20203D546 (1)


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PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-V-86 Date:07/15/86 This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public intersst ' significance. The information presented is as initially received without verification or evaluation and is basically all that is known by Region V staff on this date.

FACILITY: Southern California Edison Company Licensee Emergency Classification San Onofre Unit 1. Notification of Unusual Event DOCKET NO. 50-206 Alert Site Area Emergency General Emergency XX Not Applicable

SUBJECT:

UNIT 1 CRITICALITY AND RETURN TO OPERATION At 1:51 pm (PDT) on July 15, 1986 Unit 1 achieved criticality following its eighth refueling outags. The unit had been shutdown for 236 days following the November 21, 1985 loss of power and water hammer event. The unit is scheduled to go on-line on July 18, 1986 after the completion of low power physics testing. The licensee plans to perform a. loss of power test at 25 parcent power, then resume Unit 1 commercial operation.

This information is current as of 3:00 pm (PDT) on July 15, 1986.

CONTACT: P. Narbut R. Huey FTS 463-3730 714-492-2641 DISTRIBUTION H St. MNBB Phillips E/W W111ste Air Rights Mail:

Chairman Palladino EDO NRR IE NMSS ADM:DMB Comm. Zech PA OIA RES DOT:Trans Only Comm. Bernthal MPA AEOD Comm. Roberts ELD Comm. Asselstine Regions:

SECY INPO NSAC ACRS Licensee:

CA (Reactor Licensees) REGION V: FORM 211 PDR Resident Inspector _ (Revised 3/14/83) 0607210244 860715 YL- O I ILE PDR " l.

PNO-V-86-043 PDR # I