ML20027C802

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Forwards LER 81-040/01T-0
ML20027C802
Person / Time
Site: Dresden Constellation icon.png
Issue date: 12/15/1981
From: Scott D
COMMONWEALTH EDISON CO.
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20027C803 List:
References
DJS-81-990, NUDOCS 8210270251
Download: ML20027C802 (1)


Text

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December 15, 1981' gy)

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1 James G. Keppler, Regional Dire.ctor Directorats of Regulatory Opera. ions - Region III J U.S. Nuclear Regt.latory Cc:rnissien L 799 Roosevelt Road Glen Ellyn, IL 60137 Reportable Occurrence Repert #81-40/0lT-0, Jocket #050-249 is being j subuitted to ycur of fice in accordance witn Dresden Nuclear Pcwer Station Tee.hnical Specification 6.6.3.1.(d), reactivity anomalies, involving j disagreenent with the predicted value of reactivity balance under steady state conditions during power operation, greater than or equal to 1%*k/k; a calculated reactivity balance indicating a shutdevn margin less P

conservative than specified in the techniccl specifications; short-term reactivity increases that correspond to a reactor period of less than 5 seconds or, if sub-critical, an unplanned reactivity insertion of taore

) than 0.5%2.k/k or occurrence of any unplanned criticality.

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D. J. Scott i Station Superietendent Drer.len Nuci m Power Statica DJ S : r.h 4

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I cc: Directer of Inspertion & Enforcement Director of Managenent Information & Progrcn Contrci j U.S. NRC, Docusert Manage: tent Brar.;h j File /NRC 5

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