ML20209G103

Informs That Facility Experienced Inadvertent Criticality on 850702.NRC & Region II Not Notified of Event by Licensee Until 850715.Suggests That Branch Consider Adding Inadvertent Criticality to List of Reportable Events

ML20209G103
Person / Time
Site:	Fermi
Issue date:	08/20/1985
From:	Holahan G Office of Nuclear Reactor Regulation
To:	Rossi C NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
Shared Package
ML20209B956	List: ML20209B952 ML20209B960 ML20209B964 ML20209B968 ML20209B974 ML20209C196 ML20209G103 ML20211M231 ML20211M244 ML20211M255 ML20211M278 ML20211M299 ML20211M325 ML20211M339 ML20211M350 ML21314A280 ML21314A281
References
FOIA-86-729 NUDOCS 8508220387
Download: ML20209G103 (2)

Text

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MEMORANDUM FOR: Charles E. Rossi, Chief Events Analysis Branch, DEPER (/ . - s ., ,

FROM: Gary M. Holahan, Chief Operating Reactors Assessment Branch, DL ,

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SUBJECT:

REPORTABILITY OF INADVERTENT CRITICALITY AT FERMI 2 Fermi 2 experienced an inadvertent criticality on July 2, 1985. The NRC, both Region III and headquarters, was not notified of this event by the licensee until July 15, 1985. Apparently, an inadvertent criticality is not a promptly reportable event under current 10 CFR 50.72 reporting requirements.

The NRC views an inadvertent criticality very seriously. An inadvertent criticality is reportable to Congress as an abnormal occurrence (A0) even if no exposure, injury, or damage occurs. In addition, 10 CFR 2 Appendix C identifies an inadvertent criticality as a Severity Level I event for enforcement. Due to the serious nature of the event, I suggest that EAB consider adding inadvertent criticality to the list of prompt reportable events in your forthcoming 10 CFR 50.72 revision effort.

fN Gary H 1'ahan, Chief Operating Reactors Assessment Branch, DL cc: E. Weiss

CONTACT

W. Swenson, NRR j X27876 l

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