PNO-II-93-076A, on 931229,AIT Begun Investigation of Loss of of Unit 2 off-site Power Event That Occurred on 931227.CAL Issued.Restart of Unit Requires Concurrence of Nrc.Licensee Initiated Seit to Investigate Root Cause of Event

PNO-II-93-076A:on 931229,AIT Begun Investigation of Loss of of Unit 2 off-site Power Event That Occurred on 931227.CAL Issued.Restart of Unit Requires Concurrence of Nrc.Licensee Initiated Seit to Investigate Root Cause of Event

ML20059G114
Person / Time
Site:	Mcguire
Issue date:	12/30/1993
From:	Harris G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
To:
References
CAL, PNO-II-93-076A, PNO-II-93-76A, NUDOCS 9401240001
Download: ML20059G114 (1)

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' ' ' December 30, 1993

[EBELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE PNO-II-93-076A 1 -This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance. The'information is as initially recalved'without verification or evaluation, and is basically all that is

.hnown by the Region II staff on this date.

E.acility Licensee Emercancy Classification

Duke Power Co. Notification of Unusual Event

Mcguire.2 Alert -;

.Cornelius, North Carolina Site Area Emergency  ;

Dockets: _50-370 Genor=1 Emergency  !

X Not Applicable

Subject:

UPDATE - SWITCHYARD INSULATOR FAILJRE LEADING TO LOSS OF OFFSITE POWER l

(;

The Augmented Inspection Team (AIT) arrived at McGuire on December 29, 1993. The team has begun its investigation of f e loss of'the off-site power-event that occurred on December 27, 1993. A Confirmation of Action ,

tLetter has been issued that requires the licensee to evaluate equipment andfpersonnel response for the event including the cause of the electrical faults, the "B" main steam isolation valve failure anu .he 4

evaluation of the integrity and impact of the dry steam generator.

Restart of the Unit requires concurrence of the NRC. '

Press: releases have been issued by the NRC and licensee. At the present '

time'the licensee has not issued a recovery schedule. The licensee has initiated a Recovery Team and a Significant Event Investigation Team (SEF") to investigate the root cause of the event.

Contact:

G. HARRIS I404)331-4500 9

1 4

190019

'9401240001 931230 PDR I&E PNO-Il-93-076A PDR,.. l[0