ML19257B619

Notifies That Absence of Relay Caused RCS Pressurization Event at Davis-Besse 2,per 771006 Memo.Util Unable to Determine Why or How Relay Was Removed.No Addl Info Expected

ML19257B619
Person / Time
Site:	Crane, Davis Besse
Issue date:	10/20/1977
From:	Mcdermott R Office of Nuclear Reactor Regulation
To:	Skorholt D Office of Nuclear Reactor Regulation
References
TASK-TF, TASK-TMR NUDOCS 8001170791
Download: ML19257B619 (1)

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OCT 2 01977 NOTE TO:

Donald J. Skovholt, Assistant Director, QA&0 C. J. Heltemes, Jr., Chief, QAB /2 M[w THROUGH:

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FROM:

R. J. McDermott, QAB

SUBJECT:

REACTOR COOLANT SYSTEM DEPRESSURIZATION EVENT AT DAVIS BESSE-2 As discussed in my October 6, 1977, note.to you, the. absence of a relay.

was the cause of the depressurization event at Davis Besse-2..The inspector informed me on October 20, 1977 that the Licensee has not been. able to determicie why or how the relay was removed.

The inspector did not expectL that'any new or additional information would develop on this subject.

If you have any questions or wish me to pursue this further, please let me know.

((&' t R.l.McDermott J

Quality Assurance Branch cc:

Hel temes, Jr.,

1913 128

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