ML19323A603
| ML19323A603 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 10/03/1977 |
| From: | Klinger G, Nolan F, Sniezek J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| References | |
| FOIA-79-149 PNO-II-77-174, NUDOCS 8004210441 | |
| Download: ML19323A603 (1) | |
Text
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October 3, 1977 PRELIMINARY NOTIFICATICN OF EVENT OR UNUSUAL OCCURRENCE--PNO-77 174 This praliminary notification constitutes EARLY notice of an event of
)C FL655TBLE safety or public interest sig iificance. The infomation presented _is as initially received witnout verification or evaluation and is casically all that is known by IE staff on this date.
FACILITY: Florida Power and Light Ccmpany St. Lucia. Unit No. 1 Docket No. 50-335 Fort Pierce, Florida
SUBJECT:
INADVERTENT SAFETY INJECTION RESULTS IN 25,000 GALLONS OF PRIMARY WATER IN CONTADiMENT This pec11minary notification is for iaformation only.
At 1:09 a.m. on October 2 while conducting routine surveillance testing cf the station batteries the 125 volt DC Bus 1B was inadverently de-anergized. The plant was shutdown for maintenance and the thru pressurizer code safety valves were removed for setpoint calibration.
Tre loss of one DC bus resulted in initiation cf safety injection, containtrent Isolation, and recirculation actuaticn signals. The safety injecticn ttnks (S!T) injected into the reactor coolant system (RCS), and since
'tC3 was vented to the containment atirosphere, approximately 25,000 gallons of RCS water overflowed to containment.
ficdia interest has n2t occurred. Neither the licensee nor Recion !! elans to make a ncas reltate. The licensee anticipates a two to tr.ree day delay ir the scheduled startup cate of Octcber 9,1977. The State of Florica nas teen notified. An IE inspector is en site.
Region !! (Atlanta) received notification of this occurrence by telephone from the plant manager at 7:30 a.m. on October 2.
This information is current as of 11:00 a.m. on October 3.
Ccntact: Gx1tngler. IE x28019 Fr:olan, IE x23019 J3niezek IE x28019 01s tribution:
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