ML20056B711

Ro:On 720124,during Cold Startup,Reactor Achieved Criticality at Earlier Point in Control Rod Sequence than Had Been Predicted.All Control Rods Fully Inserted & Reactor to Remain in Cold Shutdown Condition

ML20056B711
Person / Time
Site:	Monticello
Issue date:	01/25/1972
From:	Larson C NORTHERN STATES POWER CO.
To:	Grier V NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
NUDOCS 9102080408
Download: ML20056B711 (1)

Text

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-9 N'O M T H E R N 'dTATES POWER CO M'?ANY uonticello thclear Generatins Plant - '

tboticollo, Minnesote gr,36?

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I, January 25, 1972 d

i Vr. B.syce Grier llecion Iil Co:pliance Office .

799 Rooseve)4 Road ,

f len Ellyn, 11)inois 60137

. t ibar t/r. Grier:

1 1/onticello loelear Generating T' lent Ibckci Ib.10-263 - License 16. IN22 Npor t ing O f Decur t enr.e Dn J.snuar y 24,19??, dering a cold :;tartup of tro 1.bnticellu ihr: lear Geneemt.'r g Plsnt, lie ree::In: echieved critir.nlity si sn earlior point in mottui rod w-qsc,nco A than had bocn predicted. All wntrol rods were then fully innected, j lhe reactor will tornin in he cold shutcban condition until the reason Ihr ibie annmaly is undercinnd and iis si nificanceE has boon determined, i

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