ML20153H216
| ML20153H216 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 04/13/1984 |
| From: | Palladino N NRC COMMISSION (OCM) |
| To: | Ebersole J Advisory Committee on Reactor Safeguards |
| Shared Package | |
| ML20153H186 | List: |
| References | |
| FOIA-87-444, FOIA-88-A-29 NUDOCS 8809090123 | |
| Download: ML20153H216 (1) | |
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UNITED ST ATES ff"p.
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,s April !3, }984 auAN MEMORANDUM FOR:
Jesse C. Ebersole, Chairman ACRS FROM:
Nunzio J. Palladino f
SUBJECT:
ACRS REVIEW OF DIABLO CANYON ISSUES The Commission would like to receive ACRS comments on the following:
The Committee should review the proposed license a.
condition (attached) a seismic stud that would require PG&E to do design bases. y to reassess the Diablo Canyon In addition, Commissioner Bernthal would invite your comments on tre appropriateness of the utility taking tie lead in this project.
1EC'D CM?U b.
The Committee should review the testimony before the Commission on the recently received paper rim a !.
(1G&E March 22, 1984 letter to Commission and attached paper entitled "Post-Miocene Compressional Messrs. James K. Tectonics Along the Central California Margin" by Crouch, Steven B. Bachman, and John T. Shay) which recharacterized the Hostgi fault.
The Commission would like to receive the Committee's views on these two items prior to the Co'nmission action on a full power license for Diablo Canyon, if possible.
Attachment:
As stated Commissioner Gilinsky cci Commissioner Roberts Commissioner Asselstine Commissioner Bernthal OGC OPE EDO 8809090123 000012 FOIA (PDR HAMLIN08-A-29 PDR G-A\\
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NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555
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June 13, 1984 g
CHAIRMAN MEMORANDUM FOR:
Commissioner Gilinsky Commissioner Roberts Commissioner Assel.stine Commissioner Bernthal FROM:
Nunzio J. Palladino
SUBJECT:
REVISED RESPONSE TO C0!!GdESSMAN PAN 5TTA (CR-84-43)
Attached 'is a revised response to Congressman Panetta regarding Diablo Canyon.
This revision is based on a discussion that I had with OGC and OCA in recognition of their comments on the circulated draft. (I propose that you consider this attached revision in lieu of the draft circulatedonMay21.]
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June 19, 1984 CH AIRMAN MEMORANDUM FOR:
William J. Dircks Executive Director for Operations FROM:
Hunzio J. Palladin'o Y'
SUBJECT:
LETTER FROM CONGRESSMAN ANETTA DATED FEBRUARY 8, 1984 After Commission deliberation on your draft response to Congressman Panetta, we concluded that one of his concerns should not be answered in a letter under ry signature due to its connection with the Diablo Canyor. QA hearing.
See second to last paragraph of my attached response.
Please prepare an appropriate response to his concern in a letter for your signature, cc:
Commissioner Gilinsky Commissioner Roberts Commissioner Asselstine Commissioner Bernthal S2tY OGC OPE OCA l
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CH AIR M AN The Honorable Leon Panetta United States House of Representatives Washington, DC 20515
Dear Congressman Panetta:
This responds to your ' letter of February 8,1984 regarding the Diablo Canyon Nuclear Power Plant.
We appreciate your interest in the licensing and safety of this plant.
You have raised the following three issues in your letter:
Commission consideration of the decision by the Atomic Safety and Licensing Appeal Board; NRC guidelines for resolving allegations on a priority basis; and NRC staff implementation of safety margins.
Regarding the first concern, on March 2'0, 1984 the Appeal Board issued its decision resolving the issues on design quality assurance regarding Diablo Canyon Unit 1 in favor of the Pacific Gas and Electric Company.
The decision imposes a condition for the operation of the component cooling water system and also requires further analysis of the jet impingment effects inside containment.
The Appeal Board decision is subject to review by the Commission, but the Commission has not yet decided whether or not to take review.
The staff is continuing its evaluation of the jet impingment question and intends to resolve it prior to naking a recommendation regarding operation above 5% power.
Your second concern regards the need for guidelines that will govern the evaluation of allegations.
The staff provided these guidelines to the Commission in Supplement 22 to the Safety Evaluation Report (SSER 22, March 1984), a copy of which is enclosed. This report was used as part of the basis for reinstatement of the low-power license which the Commission made ef f ective on April 19, 1984 The Commission understands that the staff intends to use these same guidelines in the evaluation of allegations related to full power authorization.
ed.r. ally, you express a concern over an apparent tendency of O u r s t a f f t e a s sur.e t h a t the margins of safety established by cur criteria need not be adhered to for systems which e re ret pivetal to safety, and that less precise, ad hoc standaros of safety can be applied.
This concern appears
- c te reisted to a substantive issue involved in the re
- :ered hea*ing bef ore the Appeal Board cr cesign cuality
o The Honorable Leon Panetta 2
essurance.
As mentioned above, the Appeal Board.ec4;1on is subject to review by the Commission.
It is more appropriate, therefore, for the staff to respond directly to your concern.
We have directed the staff to provide you with a separate response on this matter.
We trust that this letter and the separate staff letter are responsive to your concerns.
Sincerely, Hunzio J. Palladino
Enclosure:
NUREG-0675:
Supplement 22 to Diablo Canyon Safety Evaluation Report, March 1984 5
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June 29, 1984 CH AIRMAN MEMORANDUM FOR:
William J. Dircks Executive Director for Operations FROM:
Nunzio J. Palladino
SUBJECT:
ACRS REVIEW OF DIABLO CAN ON SSER At yesterd'y's Agenda Planning Session, you raised two items a
concerning the Commission's schedule for consideration of Diablo Canyon licensing matters.
I should note also that Harold Denton, during a telephone conversation with Jim McDermott on June 29, raised similar items.
One item was the Staff's proposal to send the new SSER on Diablo Canyon to the ACRS for its review prior to submittal to the Commission.
The second item was the Staff's hroposal to handle any technical differences with the Task Force's resolution of Diablo Canyon issues by, as I understand the situation from the Agenda Planning Session, addressing them in the SSER.
I propose that you set forth your plans in a memorandum to the Commission requesting Commission concurrence on the approach you Please include in your memorandum a status report on propose.
the second item identified above.
I believe your memorandum should be sent to the Commission as soon as possible so that appropriate scheduling plans can be made, both by the Commission I and the ACRS.
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Commissioner Gilinsky Commissioner Roberts Commissioner Bernthal Commissioner Asselstine Harold Denton Jack Zerbe Herzel Plaine Sam Chilk hD gtkoM $_ q h
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