ML19340D076
| ML19340D076 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 12/09/1980 |
| From: | Hunnicutt D, Johnson W, Madsen G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | |
| References | |
| PNO-IV-80-040, PNO-IV-80-40, NUDOCS 8012290020 | |
| Download: ML19340D076 (1) | |
Text
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Dtcemb:r 9, 1980 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE -- PNO-IV-80-40 This oreliminary notification constitcs EARLY notice of events of POSSIBLE safety or ouolic interese sianificance.
The information cresented is as initially receivec without verification or evaluation and is basically all tnat is known by IE staff on tnis cate.
FACILITY: Arkansas Power and Light Company Arkansas Nuclear One, Unit 2 (DN50-368)
SUBJECT:
MOTOR TO PUMP DRIVE SHAFT FAILURE THAT WILL REQUIRE MORE THAN U TWO DAYS TO REPAIR
]
At 4:14 p.m. (CST) December 5,1980, the Unit was manually scramed when a main feedwater regulator valve failed to open and caused the operatinfmafn feecwater pump to trip.
p At 6:05 p.m. on December 5,1980, the shaft coupling the emergency feedwater pump to the electric motor twisted in two when the emergency feedwater pump bearings siezed.
The steam driven emergency feedwater pump and other necessary safety-related equipment functioned as designed.
The licensee is in the process of reassembling the electrically driven emergency feedwater pump. The licensee estimates that reassemoly and testing of this pump and motor will be completed on Decemoer 11, 1980.
Unit re-start is tenta-
- ively scheduled for December 11, 1980.
The licensee has notified the appropriate Federal and State Agencies.
The licensee has not issued a press release.
I Region IV received initial notification of the Unit trip at approximately 6:30 p.m. on December 5,1980. Up-date information was received from the Resident Inspectors on December 8,1980, and at 8:30 a.m. on December 9,1980.
Contact:
W. D. Johnson (501) 968-3290 0.M. Hunnicutt 334-2781 G. L. Madsen l
Senior Resident Inspector Section Chief 334-2781 Branch Chief Distribution:
Transmitted H St. A7tS4 Chairman Ahearne Commissioner Hendrie S. J. Chilk, SECY Commissioner Gilinsky Commissioner Bradford C. C. Kammerer, CA l
ACRS (For Distribution) l
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N. M. Haller, MPA D. F. Ross, NRR R. B. Minogue, RES W. D. Kerr, OSP D. Eisenhut, NRR H. K. Shacer, ELD S. H. Hanauer, NRR MAIL J. J. Cummings, OIA R. C. Smi th, SD IE:XCOS
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._f_ pg-Steven Ebbin, NSOC RegionalOffices1J2:/7 1I /g d4 LII /;:.fo V /;;f; PRELIMINARY NOTIFICATION
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