PNO-II-86-039, on 860531,plant Taken Out of Svc to Repair Damage to non-nuclear Components Caused by Water Hammer in Low Pressure Condensate Sys.Caused by Personnel Error During Restart.Plant Will Be Down for Several Days

PNO-II-86-039:on 860531,plant Taken Out of Svc to Repair Damage to non-nuclear Components Caused by Water Hammer in Low Pressure Condensate Sys.Caused by Personnel Error During Restart.Plant Will Be Down for Several Days

ML20198R526
Person / Time
Site:	Summer
Issue date:	06/03/1986
From:	Modenos L, Verrelli D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
To:
References
PNO-II-86-039, PNO-II-86-39, NUDOCS 8606100100
Download: ML20198R526 (1)

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l June 3, 1986 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE PN0-II-86-39 This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance. The information is as initially received without verifi-cation or evaluation, and is basically all that is known by the Region II staff on this date.

FACILITY: South Carolina Electric & Gas Company Licensee Emergency Classification:

Summer Unit 1 Notification of Unusual Event Docket No. 50-395 Alert Jenkinsville, South Carolina Site Area Emergency General Emergency X Not Applicable l

SUBJECT:

UNSCHEDULED SHUTDOWN LONGER THAN 48 HOURS i South Carolina Electric & Gas (SCE&G) has taken the Summer plant out of service to repair damane to some non-nuclear components caused by water hammer in the low-pressure condensate system on Saturday, May 31.

The water hammer has been attributed to personnel error during restart of the unit, which tripped off line at 10:26 a.m. that day as the result of an over-temperature, delta-T signal in the reactor protection system. One temperature signal channel was being tested, and another was being worked on at the time. All systems functioned normally during the scram.

The unit, now in hot standby, is expected to remain out of service for several days while evaluation and repairs.

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SCE&G is prepared to respond to media inquiries.

The State of South Carolina has been informed.

This information is current as of 8 a.m. today.

Contact:

L. P. Modenos, 242-4192 D. M. Verrelli, 242-5526 DISTRIBUTION:

H. Street MNBB Phillips E/W Willste MAIL:

Chairman Palladino TDT NRR TF NMSS IDMIUMB Com. Roberts PA OIA RES D0T: Trans Only Com. Asselstine MPA AE0D Applicable State Com. Bernthal ELD Com. Zech Air Rights INP0/O.'/I SECY SP NSAC ACRS 374Yh8849/ N

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R Regions: /

Licensee: /: 50 (ReactorLicensees) -

Applicable Resident Site /D

) I 8606100100 860603 PDR 18cE

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PNO-II-86-039 PDR

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