PNO-II-85-056, on 850517,reactor Tripped.Caused by Loss of Offsite Power Due to Fire Disabling 500-kV Line Near Util Substation.Unusual Event Declared.All Safety Sys Functioned Normally.Power Restored

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PNO-II-85-056:on 850517,reactor Tripped.Caused by Loss of Offsite Power Due to Fire Disabling 500-kV Line Near Util Substation.Unusual Event Declared.All Safety Sys Functioned Normally.Power Restored
ML20128A601
Person / Time
Site: Turkey Point NextEra Energy icon.png
Issue date: 05/17/1985
From: Brownlee V, Dick G
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
To:
References
PNO-II-85-056, PNO-II-85-56, NUDOCS 8505240271
Download: ML20128A601 (1)


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May 17, 1985

' PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE PNO-II-85-56 This preliminary notification. constitutes EARLY notice _of events of POSSIBLE safety or public. interest significance. The information is as initially. received without verifi-Ecation or evaluation,;and is basically all that is known by the Region II staff on this data.

FACILITY
1 Florida Power and Light Company- Licensee Emergency Classification:

Turkey Point Units 3 and 4 X Notification of Unusual Event Docket Nos. 50-250 and 50-251 Alert

- Homestead, Florida Site Area Emergency General Emergency Not Applicable

SUBJECT:

-LOSS'0F 0FF-SITE POWER AND 'SDESPREAD POWER OUTAGE Turkey Point Unit 4, which was operating' at 100 percent power, tripped at 11:40 a.m. (EDT)

. today because of. a loss of off-site power. The power loss was caused by a fire which (disabled a 500-KV transmission line near Florida Power and Light's (FPL) Andytown

substation .in. central Florida. The loss of this substation caused a cascading power loss.

. cffect which interrupted electricity service to about 1.5 million customers from Palm Beach

< s::uth through' the Miami area, affecting the off-site. power supply to Turkey _ Point. Unit 3 is shutdown for refueling. The power interruption also tripped oil-fired Turkey Point Units 1 and 2.

FPL'd'eclared'an unusual event at noon and terminated it at.2:07 p.m. All safety systems,-

including the. emergency diesel generators, functioned as required.

Off-site power was restored to Turkey Point Unit 4 by approximately 1:55 p.m. and to Unit 3 ~

by 2:30 p.m. as. power was being generally restored to the south Florida area.

Media interest has occurred. Both FPL and NRC have responded to inquiries.

.Thi-State of. Florida has been informed.

~FPLTinformed the'NRC headquarters duty officer of this incident by telephone at 12:18 p.m.-

"today.-

Ctntact: G. Pick, 842-3187 V. Brownlee, 242-5583 DISTRIBUTION-MNBB MAIL:

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Licensee: T,56 (ReactorLicensees) i Applicable Resident Site 3,. 6]

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