ML20136B072

Discusses TMI-2 Containment Isolation.Suggests That Open Containment Ventilation Valves Could Have Caused Greater Radioactive Release.Requests Review

ML20136B072
Person / Time
Site:	Crane
Issue date:	06/04/1979
From:	Gilinsky V NRC COMMISSION (OCM)
To:	Harold Denton Office of Nuclear Reactor Regulation
Shared Package
ML20136B069	List: ML20136B064 ML20136B072
References
NUDOCS 7908150473
Download: ML20136B072 (1)

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UNITED STATES T'

NUCLEAR REGULATORX COMMISSION "3@'kq.[,/%96 y

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i June 4, 1979 MEMORANDUM FOR:

Harold Denton, f

Director, Nuclear Reactor Regulation FROM:

Commissioner Gilinsky f I understand that the containment at TMI-2 is designed to i

isolate only on a high pressure signal.

This suggests to me that if the containment ventilation valves had been open for containment purging at the time of the accident, a sub-stantially greater amount of radioactivity might have been released than in fact was released.

Is this correct?

Would the release be filtered?

Would operators have been aware of open purge valves?

To what extent does this problem exist in other operating reactors?

What is NRC doing about it?

i cc:

Chairman Hendrie Commissioner ~ Kennedy l

Commissioner Bradford Commissioner Ahearne L. V. Gossick, EDO l

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