ML20209B945
| ML20209B945 | |
| Person / Time | |
|---|---|
| Site: | 05000000, Diablo Canyon |
| Issue date: | 02/18/1983 |
| From: | Eisenhut D Office of Nuclear Reactor Regulation |
| To: | Mattson R Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20209B155 | List:
|
| References | |
| FOIA-86-151 NUDOCS 8303020333 | |
| Download: ML20209B945 (2) | |
Text
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NUCLEAR REGULATORY COMMISSION
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c WASHINGTON D. C. 20555
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FEB 18 1983
.s MEMORANDUM FOR:
Roger !!attson, Director Division of Systems Integration FROM:
Darrell G. Eisenhut, Director Division of Licensing 3> G ~ 2 D_
Office of Nuclear Rt. actor Regulation
SUBJECT:
DIABLO CANYON - REVIEW OF CCWS Over the past couple of months a number of questions have been raised concerning the adequacy of the design of the Diablo Canyon Component Cooling Water System (CCWS). While it is recognized that the questions raised on the CCWS may have implications for other systems, the focus for our review has been the CCWS since such a review will determine the validity of questions that have been raised.
The concerns were the subject of a Board Notification h,$cMjyEQ The allegations referenced therein, will be evaluated by Region Fa71d 7E in accordance with normal practice.
In addition, the transcript of an NRC meeting with an individual who raised a number of questions has been sent to the IDVP contractor gElosure)
(Teledyrje equesting that it be factored into Phase II of that program.
(See for transmittal letter.)
In addition, the staff met with PG&E reirEe'n' tat ves on January 28, 1983, to discuss the design basis for the,QCWS.
A copy of the transcript of that meeting with PG&E is attached as3EcTosUre'I.$
PG&E has informed me that additional information, including responsd5'to' staff questions at the January 28, 1983, meeting, will be supplied to the NRC at the end of February.
In order to provide confidence in the design review approach for Diablo Canyon, we have determined that the staff should undertake a new review of the CCWS.
Such a review should be sufficiently detailed to provide the following deter-minations, which should be addressed in your SER:
1.
The extent to which the CCWS design satisfies the FSAR co nitnents.
2.
The extent to which the CCWS satisfies all NRC regulations applicable to Diablo Canyon.
3.
The extent to which the CCWS neets the applicable criteria in the latest edition of the Standard Review Plan, and 4.
The generic implications, if any, from the aforementioned determinaticos regarding the adequacy of the Diablo Canyon design approach and philosophy.
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I' Roger Mattson Your review should be completed, with SER inputs provided to DL by March 31, 1983.
If your are unable to support this schedule, please notify me promptly.
DL will arrange site visits, meetings, etc. as needed, to support your efforts which, we recognize, may include walkdowns of the CCWS as necessary to review
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the final as-built design. We anticipate that you will integrate the overall review of the CCWS, soliciting inputs from other NRR Division as appropriate.
/
m r
sd rector Division of Licensing Office of Nuclear Reactor Regulation cc:
H. R. Denton, w/o encl.
E. G. Case, w/o encl.
R. Vollmer, w/o encl.
T. M. Novak, w/o encl.
G. W. K niahton. w/o enc 1.
ec.=entarif Aa:N1irTamGrytJ B. Buckley, w/o encl.
H. Thompson, w/o encl.
R. Engelken, w/o encl.
J. Martin, w/o encl.
..