ML19289A184

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PNO-III-79-34:on 791104,util Achieved Criticality Following Refueling & Maint Outage.Caused by Leakage in Control Rod Drive F-2 & Loose Inlet Diffuser Plate.Repairs Required Removal of Core & Vessel Internals
ML19289A184
Person / Time
Site: Big Rock Point File:Consumers Energy icon.png
Issue date: 11/05/1979
From: Boyd D, Ridgway K
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:
References
PNO-III-79-034, PNO-III-79-34, NUDOCS 7912070070
Download: ML19289A184 (1)


Text

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v-PRELIMINARY NOTIFICJ. TION c

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(j Date: November 5,1979 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRD.'CE--PNo-111-79-34 This oreli=icarv notification constitutes EA!1Y notice of evects of POSSlhtE informatI5' precented is as safety or public interest sirulficance.

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initial _ly received without verificctionTr~cvaluation and is basically all that is known by IE staf f oc th:.s date.

Fv111ry:

Consor.e.rs Pnwe r Company P,tg Rock Point De c ke t Nn.

'n>- b 5 Charlevoix, tti tsleet:

l'NTT Rt.9 TART AF"'7R AN D:TF;DED 0;"

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'11< To.k Peint achieved criticality at 2210 on November 4, 1979 f ollowing a reiveling and.ui n tena nce n u t a r,9 which hcgan on Fchruary 2, 1979.

Following the refueling und dorug s tartup in April, Cont rol Rud Drive I'-2 was found ta he leaking and a recircul tion inlet dif f aser plate had become innrte.

The nuccrumful repairk required the recioval of the rcre and ve.ssel i n t e rnal.s.

Tollowing the repulru a R111 inspec tor war nnnite to ubservu the hydro tesLing and to complete valving alignment chccks su required by (E Dul.eti-79-0A prior to startup.

' occi -edia interest is expectnd.

~he licenseo is not planning a news release at this tice.

A n m.s relcaue is not planned by the NRC.

The State cf Michigan har, been informed.

T' i s Pre 11:inary Nacific.ation is 1:ssued for Jnfor:.ation only.

No further action by a

IK is onliripated.

  • tI;I received notilinativu f rom the licanr,a* at 10:30a.m. on Never.ber 5, 1979.

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Cont aet :

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PJ dgway, ni r I, 334-254.'.,

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P.oyd, RIII,384-2546 Cistribution:

Transmitted H St Chairman liendrie Comstssioner Bradford S. J. Chil k, SEC'i Cn:missioner Kennedy Co==issioner Ahearne C. C. Kar.:nerer, CA Cc:=issioner Gilitsky ACRS (For Distributien)

T ra nsmi tted: MNBB P. Bldg IE:XOOS (fE: lit) Dist L. V. Gossick, EDO H. R. Denton, NRR E. L. Ornstein, EDO sR. C. DeYounE, NRR J. J. Feuchard, PA R. J. Mattcon, hm Landow (6 min /page)

M. '. Haller, MPA D. Va s s allo, N'1R J. J. Cummings, O!A J

.t G. Ryan, OSP T. Eisenhut, NFJ1 E. K. Shapar, ED JS Sidg (MAIL)

U. J. Dirchs. NMSS R. !!inogue, SD S. Levine, RES IE:XOCS PIdLIMI23.RT NOTIIICATION 7912070 070 S