ML072740457
| ML072740457 | |
| Person / Time | |
|---|---|
| Site: | Watts Bar  |
| Issue date: | 08/22/2007 |
| From: | Mark King Office of Nuclear Reactor Regulation |
| To: | |
| References | |
| FOIA/PA-2007-0255 | |
| Download: ML072740457 (1) | |
Text
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Page: 1 ig igust' 22,: 2007 Ma rk.King"a(1/*23/2005 :58:4 0 am)
Fue Cladding iFailure at Watts Bar Unit '1.'
Watts Bar Nud.lear plant 'made. ano enevent.notification N.).to NRC. ni'./1412005ý cnce. nn9the
'A~bi.bd'n E~ Notificatlion Th 9ulispecto confirmedbn I.. atest ied.i5 h
uel E
sembly.
Ie n'a onfi7 dthat an opening existed"in oneP."tod, (P9)-. catdln'.G4ha4sbuel: asi'-sebly,,This'assebly.is a;x."Vantage.+/Perormance+ (VP+)fuel assembly,.
the core duringtwo previous cycles. :The inspecton noted some rod y~ah&
d: in64 ý66ý`dbe' exispctecjted.sdrfie"e'd cadddli.filure'difflrent.than wha.t could.beexect.
"VA made a: non-emer*
e*cy notification in: accordance with. 10CFRM50'72(b)(3)(li)(A)-For*Uhls event, the' cladding*failUre C Id I:be-:conside[.editoe exc-expected.values. TVAs-inve
'th'&eo~~~~~failu~~of ~
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f~i6h, ia e,causeiof~
- the, r~lfa lu r.enstyu
- .- h*golng,,Yesterday ateoo
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(*112,05),.NR*Rit had',a.teleconi~with~theJ,* *...:
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,ay tu Bar lcenseei,.Wnesth roUse;*
aeiad Region.2 1
.rega*
te.fafled fuel l
plnsL T:hel Th nseees.
lnvegtins1in progress and6a:.pfrr
.eWs "IlWouse'is scheduledi..for :December,2*,
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'a prpsD acqo sen'rv
- ama, The :fuelassembly d
o s
.the.0-
.i
- .f-
,.ptn The fue Iassembly..4 ph tos.A,(3 mi)showsth
.mising.*gap and small pieces of fuel pellets atop the, Note: Watts Bar did dreceive a 1.ý4% piovWeruprate on January 19, 2001 i n response to installing Caldon feedwater flow Instrumentation.and correctingAthe. eedwater flow uncertainty. But there is currently no indication.that: th isuprate:: is re ated.tothe.'.failed fuel'ondition Further updates will be made to this posting as -infof!ation cbecomes available.
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42-2 http://nrr I O.nrc.gov/forum/forumtopic. cfrn?selectedForum=03 &forumld=AllComm&topicld= 1087 08/22/2007