ML20151X427
| ML20151X427 | |
| Person / Time | |
|---|---|
| Site: | Point Beach  |
| Issue date: | 01/02/1976 |
| From: | Jennifer Davis, Dreher F, Roy G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| To: | |
| References | |
| PNO-76-001, PNO-76-1, NUDOCS 9809170086 | |
| Download: ML20151X427 (2) | |
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<e PRELIMINARY NOTIFICATION - NOT FOR PUBLI p A.-
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January 2, 1976 PRELIMINARY NOTIFICATION OF EVENT OR' UNUSU
--PNO-76-01 P_0SSIBLE safety or public interest significanceThis p ce of events of presented is as initially received without verification oThe information and is basically all that is known by OIE staff as of 8:00
- ate of this notification r evaluation d
BE INACCURATE OR INCONSISTENT. NOTIF a.m. on HIS ETERMINED TO
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WILL BE ISSUED IF WARRANTED. NOTIFICATIO BSEQUENTLY Facility: Point Beach Unit 1 (ToabG)
Subject:
DURING REFUELING OUTAGEPOSSIBLE GEN
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The licensee found a failed fuel rod during routine fuel tr on December 17, 1975, ansfers l
The degree of failure was more severe than previo operation.
found at this facility or other licensed PWR facilities of other fuel elements in the core with negative result The licensee
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ng for resuming operation January 1, 1976.has been reconstitut The core ration which surrounds the c~or~e.The failure is attributed to bypass flow th
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rods of fuel assemblies on the core periphery leading to vibrati a
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and subseq,uent fretting of the rod by the fuel element grids perforation of the fuel rod may allow water to enter the fuel rod The during an outage and could result in rapid pressurization within th rod during subsequent startups resulting in cladding failure. e postulated cause appears to fit the history and observed damage to The the fuel assembly.
at two foreign Westinghouse built reactors.It is understood that similar failur be generic to other Westinghouse reactors.
This mode of failure may C,
Continued 4 - m.M y[gL 98091 0006 76 W PDR stE PNO-76-OOi PDR y
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Continued Page 2 January 2, 1976 PNO-76-01 s
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The licensee completed a safety evaluation December i
31, 1975, and will submit the results of their evaluation to NRC.
The licensee has
-addressed operation'with fuel pellets remaining in the core plus the con-sequence of additional fuel failures and ascertained that no unreviewed safety question exists.
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No press release has been issued, and no media interest has been shown to date or is expected.
Region III received notification of this occurrence by telephone from i
licensee at 0900, December 31, 1975.
Contact:
FADreher, IE x27261 GWRoy, IE x27353 JGDavis. IE x27541 Distribution:
Chairman Anders Commissioner Mason S. J. Chilk, SECY Commissioner Gilinsky Commissioner Rowden G. F. Murphy, JCAE Commissioner Kennedy C. C. Kammerer, CA L. V. Gossick, 40 D. F. Knuth,.IE J. A. Harris, PA B. C. Rusche, NRR J. La Fleur, ISP T. J. McTiernan, AIA K. R. Chapman, NMSS H. K. Shapar, ELD Transmitted: P Bldg / i. i.-; HSt # a m; NNBB #. ~.J_ Lyge l
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.NOT FOR PUBLIC DISCLOSURE a
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