ML20153C388

Requests That ACRS Reevaluate Until Clear Picture of Extent of & Consequences of Errors at Plant Available

ML20153C388
Person / Time
Site:	Diablo Canyon
Issue date:	10/29/1981
From:	Bradford P NRC COMMISSION (OCM)
To:	Mark J Advisory Committee on Reactor Safeguards
Shared Package
ML20151Y970	List: IA-87-444, Ack Receipt of Re Plant Licensing.Comments Will Be Forwarded to Secretariat for Inclusion in Public Record, Since Case Is Contested & Commission Cannot Comment ML20151Y964 ML20151Z030 ML20151Z094 ML20151Z137 ML20151Z178 ML20151Z299 ML20151Z384 ML20151Z493 ML20151Z521 ML20151Z540 ML20151Z575 ML20151Z628 ML20151Z642 ML20151Z703 ML20151Z749 ML20151Z789 ML20151Z804 ML20151Z816 ML20151Z853 ML20151Z864 ML20151Z869 ML20151Z888 ML20151Z910 ML20151Z928 ML20151Z938 ML20151Z954 ML20151Z977 ML20151Z984 ML20153B580 ML20153B594 ML20153B634 ML20153B643 ML20153B656 ML20153B663 ML20153B689 ML20153B737 ML20153B777 ML20153B831 ML20153B863 ML20153B891 ML20153B925 ML20153B971 ML20153C002 ML20153C027 ML20153C036 ML20153C050 ML20153C081 ML20153C108 ML20153C184 ... further results
References
FOIA-87-444 NUDOCS 8805060220
Download: ML20153C388 (1)

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October 29, 1981 OPPICE OF THE COMMISSIONER Dr. J. Carson Mark i

Chairman

- Advisory Comittee on Reactor Safeguards Washington, D.C.

Dear Dr. Mark:

The ACRS' July 14, 1978 letter regarding Diablo Canyon lists several "offsetting factors that lead to acceptance of these bases.and criteria" used in the seismic reevaluation of the Diablo Canyon Station, j

One of the three factors is that "because of the extent and depth of the j

staff's review of the. applicant's seismic reevaluation, the likelihood of an undetected error in the seismic analysis or design is greatly i

reduced."

I realize that it is premature to ask the Comittee to reevaluate its letter until a clearer picture of the extent and consequences of the errors at Diablo Canyon are available. However, I think that it will be necessary for you to do so at that time.

Sincerely, Peter A. Bradford Comissioner i

cc: Chairman Palladino Comissioner Gi.linsky Comissioner Ahearne Comissioner Roberts S. Chilk, SECY 8805060220 G80410 PDR FOIA HAMLINB7-444 PDR

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