ML20212L263
| ML20212L263 | |
| Person / Time | |
|---|---|
| Site: | 05000000, Diablo Canyon |
| Issue date: | 12/30/1976 |
| From: | Allison D Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20150F500 | List:
|
| References | |
| FOIA-86-391 NUDOCS 8608250266 | |
| Download: ML20212L263 (5) | |
Text
,
a t
JEC 3 01976 Docket Nos.:
50-275, 50-323 APPLICANT: Pacific Gas and Electric Company (PG&E)
FACILITY:
Diablo Canyon Nuclear Power Station, Units 1 and 2 (Diablo Canyon)
SUti!!ARY OF ADVISORY C0fHITTEE ON REACTOR SAFEGUARDS (ACRS) MEETING CONCERNING THE DIABLO CANYON OPERATI!!G LICENSE APPLICATION The ACRS met in Washington, D.C. on November 13, 1976, to discuss the Diablo Canyon Operating License Application. A list of attendees is provided in the enclosure.
Background
PG&E had applied for operating licenses for Deiablo Canyon in 1973.
I Construction of Unit 1 had essentially been completed in April 1976.
However, the review of the operating license application was not yet completed due to delays associated with evaluating the earthquake potential of the Hosgri fault. This fault, located about 31/2 miles offshore from the Diablo Canyon plant, had been discovered after the Ml construction permits for the Diablo Canyon units were issued.
On May 11,1976, we had fonnally issued our evaluation of the earthquake i
potential of the Hosgri fault. We had stated that a Magnitude 7.5 earthquake should be assumed to occur on the Hosgri fault and an effective site acceleration of 0.75g should be used in developing design response I
spectra for reevaluating the plant's seismic capabilities. These matters j
had been discussed with the Subcommittee and the full Comittee on May 21 j
June 25, June 26 and July 8; 1976.
l Subsequently, PG&E had submitted proposed design response spectra. We had completed our review and formally presented the staff position con-cerning design response spectra in Supplement No. 5 to the Safety Evaluation Report (SER) dated September 10, 1976. This staff position had been discussed with the ACRS subcommittee on October 11, 1976.
i i
kogea 6 ecosoi HOUGH 96-391 PDR
.... ~
suena sse >
' cave >
+
Forum ABC.)18 (Rev p.$3) ABCM 0240 W u. s; oovsmsemawr Pasurine orrecas to74.sae.see
,p N ~hI * ~
A-@
Dacific Gas and Electric C 39 1976 Comnany 2-S_cismic Desinn Fe had revie+ed PnaE's pronosals concerning design response smetra, which were based on the work of PG&E's consultant, Dr. John A. Slume.
'Je had also revicwed the recomendation of our consultant, Dr. flathan M.
Newnark, who had independently developed snectra using a different approach. Based on these reviews, our position stated essentially that spectra which were greater than or equal to those recomended by our consultant would be acceptable for use in the reevaluation.
He briefly discussed the staff position concerning desion resconse spectra (including the effective acceleration of 0.759). The staff i
members present as well as our consultants Dr. fl. Hewnark of the University of Illinois and Dr. H. Colter and Mr. J. Devine of the U.S.
Geological Survey responded to numerous questions from the Comittee and its consultants concerning the basis for the staff position.
PG&E's consultant, Dr. Blume, discussed his t.ork and responded to questions from the Committee and its consultants.
i Ve agreed to provide a detailed justification for our acceptance, in this particular case, of the standard damping values given in Regulatory Guide 1.61, " Damping Values for Seismic Design of Nuclear t
Power Plants". He also stated that we would pmvide reports on theoretical studies of earthquake characteristics prepared by PG&E's M
consultant and by our consultant.
}
At the conclusion of the meeting the Comittee Chairman stated that the Comittee would communicate later with the NRC staff concerning future actions.
[
Original Signed By t
Dennis P. Allison i
D. P. Allison, Project t'anager i
Lioht Water P.eactors Branch No.1 Division of Project flanagement
Enclosure:
Attendance List i
cc: See Page 3 i
l l
i i
.LH gR__
$-1
.me =
- 0AlliYon:klj.
J d(,
12/_t/76 12/3W 76
[
Perm ABC.)tt (Rev. P.SS) ABCBE 0240 W u. s. eovanmesse Pasurine omes seve.eae.tes-1
- a. = -- -
.a=w;: - ---
... =. 2 1.
=.
21
- .. 1 -
- ~.
Pacific Gas and Electric DEC 3 01976 Company.
cc: Pacific Gas and Electric Company James A. Geocaris ATTN: Mr. John C. Morrissey Center for Law in the Public Vice President & General Interest Counsel 10203 Santa Monica Boulevard 77 Beale Street Los Angeles, California 90067 San Francisco, California 94106 Ms. Raye Fleming Philip A Crane, Jr., Esq.
1746 Charro Street Pacific Gas and Electric Company San Luis Obispo, California 93401 77 Beale Street San Francisco, California 94106 Mr. John Forster 985 Palm Street Andrew J. Skaff, Esq.
San Luis Obispo, California 93401 California Public Utilities Comission Mr. William P. Cornwell 350 McAllister Street P. O. Box 453 San Francisco, California 94102 Morro Bay, California 93442 Mr. Frederick Eissler, President Mr. W. J. Lindblad, Project Engineer Scenic Shoreline Preservation Pacific Gas and Electric Company Conference, Inc.
~
77 Beale Street 4623 More Mesa Drive San Francisco, California 94106 Santa Barbara, California 93105 Mrs. Thelma Hirdler Ms. Elizabeth E. Apfelberg 811 Fair Oaks Avenue 1415 Cazadero Arroyo Grande, California 93420 mill 0MW San Luis Obispo, California 93401 Mr. W. C. Gangloff Ms. Sandra A. Silver Westinghouse Electric Croporation 5055 Radford Avenue P. O. Box 355 North Hollywood, California 91607 Pittsburgh, Pennsylvania 15230 Mr. Gordon A. Silver Mr. Paul Morton 5055 Radford Avenue California Division of Mines North Hollywood, California 91607 and Geology 28 Civic Center Plaza Paul C. Valentine Room 642 l-400 Channing Avenue Santa Ana, California 92701 Palto Alto, California 94301 Mr. James F. Devine Yale I. Jones, Esq.
Department of the Interior 100 Van Ness Avenue U. S. Geological Survey 19th Floor National Center, Mail Stop 908 San Francisco, California 94102 South Lake Drive Reston, Virginia 22092 Dr. H. M. Newmark Consulting Engineering Services 1211 CiFil~~Eiigineering Building i
University of Illinois Urbana, Illinois 61801 1
..-. -. -... e
-. - ~ - - -.
e,
_Ei! CLOSURE L_IST OF ATTET! DEES NOVE'mER 13, 1976 ACRS NRC Staff Members R. DeYoung P. Johnson K. Kapur
!!. c>anmill ACRS Consultants D. Allison J. Knight R. Pofman J. C. Stepp E. Luco N. P. Lipinski J. Stolz P. Y. Chen T. Pickel L. Lybarrondo P. V4efer L. Crocker M. White P.. Scavuzzo T. Young D. Vassallo M. Trifunac J. Wilson NFC Consultants ACRS Staff fl. New., ark - University of Illinois J. McKinley H. Colter - U.S. Ceological Survey T. McKreeles J. Devine - U.S. Geological Survey R. Fraley P. Henshaw - U.S. Geological Survey T. Hirons - Los Alanos Scientific PG&E Laboratory W. Lindblad f1 embers of the General Public emmqw R. Bettinger J. Hoch A number of interested persons V. Ghio from the general public wrc G. Lenfesty present. None made a state-G. Blanc ment to the Confitttee.
PG&E Consultants (J. Blume Associates) i J. Blume I
R. Gallagher D. Jhaveri Westinghouse W. Cangloff T. Anderson o
i orrecs >
Gunaaesa >
. a.,_
oave W.
Perm ABC.3IS (Rev. 9-55) ABCM 0240
' W u. s. eovensessesty passsegue oFPsCSs1974 838988 e
,s..,
t
(
MEETING
SUMMARY
DISTRIBUTION Docket File N J. Knight NRC PDR D. Ross Local POR R. Tedesco TIC S. Pawlicki NRR Reading I. Sihweil LWR 1 File P. Check' B. C. Rusche T. Novak E. G. Case Z. Rosztoczy R. S. Boyd G. Lainas R. C. DeYoung V. Renaroya D. Skovholt T. Ippolito J. Stolz V. Moore K. Kniel R. Vollmer
- 0. Parr M. Ernst W. Butler W. Gammill D. Vassallo G. Knighton L. Crocker B. Youngblood R. Clark W. Regan T. Speis D. Bunch P. Collins J. Collins C. Heltenes W. Kreger R. Houston R. Ballard S. Varga M. Spangler J. Miller J. Stepp F. J. Williams L. Hulman R. Heinenan H. Shiith h
H. Denton V. Stello D. Muller Project Manager At ney, ELD E. liylton NRC~ participants ACRS (16)
W r
@e 6
%3n -39/
A - 62'