ML16341F034
| ML16341F034 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 03/17/1989 |
| From: | Rood H Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| TAC-55305, TAC-68049, NUDOCS 8903230362 | |
| Download: ML16341F034 (24) | |
Text
,~~ A~c>,
Wp0 Op A.
O I
/p +a**+
I UNITED STATES NUCLEAR REGUL'ATORY COMMISSION WASHINGTON, D. C. 20555 March 17, 1989 DOCKET NOS 50-275 and 50-323 APPLICANT:
FACILITY:
SUBJECT:
PACIFIC GAS AND ELECTRIC COMPANY (PGSE)
DIABLO CANYON NUCLEAR POWER PLANT, UNITS 1
AND 2
SUMMARY
OF MARCH 1-3, 1989 PUBLIC MEETING TO DISCUSS SEISMIC GROUND MOTION, DIABLO CANYON LONG TERM SEISMIC PROGRAM (LTSP)
(TAC NOS.
55305 AND 68049)
On March 1-3, 1989 the NRC staff and its consultants met with PG8E in San Francisco, California to discuss PGSE's response to the ground motion questions transmitted by the NRC staff letter of December 13,
- 1988, as part of the staff review of the LTSP Final Report submitted by PGSE on July 31, 1988.
Attendees at the meeting are given in Enclosures 1, 2, and 3.
The agenda for the meeting is given in Enclosure 4.
A copy of all the viewgraphs presented at the meeting have been transmitted to the meeting participants by PG5E letter dated March 13, 1989.
This material has been docketed and is available for inspection at the PDR and the LPDR.
Following the formal presentations by PGSE and its consultants, the staff and its consultants caucused in the afternoon of March 2.
As a result of the caucus the staff provided PGSE with list of questions and issues related to ground motion which still need clarification.
Among these are:,
1.
hIhat are the potential effects on the ground motion regression analysis results of including the very hard rock sites in the empirical data set.
2.
Provide a justification of the methods used for the selection and adjustment of the data used in the near-source ground motion and empirical ground motion estimates.
The justification should demonstrate that the methods used do not bias the ground motion to the low side.
3.
Identify the records which were used in each of the subsets of the empirical data set used for each of the various analyses.
4.
The median and 84% spectra resulting from the numerical modeling studies have a dip in amplitude between 5 and 10 Hertz.
PGSE stated that this is an artifact of the random number set used in the calculations.
Substantiate this by providing spectra generated with a different sets of random numbers where this dip does not occur.
5.
How much would the empirical ground motion estimates change if the type of faulting was assumed to be all oblique slip rather than 65K strike slip, 30X oblique slip, and 5% reverse slip?
6.
Is the apparent magnitude dependence ground motion analysis real or is it lower magnitudes the uncertainty may while at larger magnitudes it may be "8903230362 890317
.,.PDIR ADOCK 05000275 PDC of the dispersion in the empirical an artifact of the data set?
For be due to inter-event dispersion due to intra-event dispersion.
E
7.
Provide a step-by-step discussion of the uncertainty in the numerical modeling study.
8.
Show the effect of different assumptions of fault type (strike slip, oblique slip, and reverse slip) in the numerical modeling study.
9.
Provide a comparison between the numerical modeling study and the frequency-wave number method of the 1.5 km and 3
km source depth contributions.
10.
Provide the eleven three-component time series for bilateral rupture for both the Imperial Valley and Coalinga after shock sources from the numerical modeling study.
11.
The amplitudes of low frequency portion of the spectra generated in the numerical modeling study appear to be deficient.
At what frequencies are these spectra dependable?
12.
To aid in accessing the proposed lack of topographic effect at the Diablo Canyon site, provide a numerical study using vertically polarized shear waves with ground motion amplitude referenced to sea level.
In the morning of March 3 PGSE made presentations and there were discussions on questions 2, 4, 5, 6, 7.
PG&E will provide written submittals for the other items and to document the presentations on these five items.
Enclosures:
1.
Meeting Attendees, 3/I/89 2.
Meeting Attendees, 3/2/89 3.
Meeting Attendees, 3/3/89 4.
Meeting Agenda cc: w/enclosures
- see next page Harry Roo
, Senior Project Manager Project Directorate V
Division of Reactor Projects - III, IV, V and Special Projects
Mr. J.
D. Shiffer Pacific Gas and Electric Company Diablo Canyon CC:
Richard F. Locke, Esq.
Pacific Gas 8 Electric Company Post Office Box 7442 San Franci sco, Ca liforni a 94120 Janice E. Kerr, Esq.
California Public Utilities Commission 350 McAllister Street San Francisco, California 94102 Ms. Sandra A. Silver 660 Granite Creek Road Santa Cruz, California 95065 Mr. W. C. Gangloff Westinghouse Electric Corporation P. 0.
Box 355 Pittsburgh, Pennsylvania 15230 Managing Editor San Luis Obis o Count Tele ram ri une 13221Jo 2nson Avenue P. 0.
Box 112 San Luis Obispo, California 93406 Mr. Leland M. Gustafson, Manager Federal Relations Pacific Gas and Electric Company 1726 M Street, N.
W.
Washington, DC 20036-4502 Dian M. Grueneich Marcia Preston Law Office of Dian M. Grueneich 380 Hayes Street, Suite 4
San Francisco, California 94102 NRC Resident Inspector Diablo Canyon Nuclear Power Plant c/o U.S. Nuclear Regulatory Commission P. 0.
Box 369 Avila Beach, California 93424 Mr. Dick B 1 a kenburg Editor 8 Co-Publisher South County Publishing Company P. 0.
Box 460 Arroyo Grande, California 93420 Bruce Norton, Esq.
c/o Richard F. Locke, Esq.
Pacific Gas and Electric Company Post Office Box 7442 San Francisco, California 94120 Dr.
R. B. Ferguson Sierra Club - Santa Lucia Chapter Roc'- Canyon Star Route Creston, California 93432 Chairman San Luis Obispo County Board of Supervisors Room 270 County Government Center San Luis Obispo, California 93408 Director Energy Facilities Siting Division Energy Resources Conservation and Development Commission 1516 9th Street Sacramento, California 95814 Ms. Jacquelyn Wheeler 3033 Barranca Court San Luis Obispo, California 93401
Pacific Gas II Electric Company Diablo Canyon CC:
Ms. Laurie McDermott, Coordinator Consumers Organized for Defense of Environmental Safety 731 Pacific Street, Suite 42 San Luis Obispo, California 93401 Mr. Paul Szalinski, Chief Radiological Health Branch State Department of Health Services 714 P Street, Office Building 88 Sacramento, California 95814 Regional Administrator, Region V
U.S. Nuclear Regulatory Commission 1450 Maria Lane Suite 210 Wa lnut Cree k, Ca 1 iforni a 94596 Ms.
Nancy Culver 192 Luneta Street San Luis Obispo, California 93401 President California Public Utilities Commission California State Building 350 McAllister Street San Francisco, California 94102 Michael M. Strumwasser, Esq.
Special Assistant Attorney General State of California Department of Justice 3580 Wi lshire Boulevard, Room 800 Los Angeles, California 90010
Pacific Gas and Electric Company Long Term Seismic Program Diablo Canyon CC:
Dr. Keiiti Aki Department of Geological Sciences University Park University of Southern California Los Angeles, California 90089-0741 Dr. Ralph J. Archuleta Department of Geological Sciences University of Califronia Santa Barbara Santa Barbara, California 93106 Dr. Robert D. Brown, Jr.
U.S. Geological Survey Mail Stop 977 345 Middlefield Road Menlo Park, Ca 1 iforni a 94025 Dr. David B. Slemmons MacKay School of Mines University of Nevada-Reno
- Reno, Nevada 89557-0047 Dr. Robert Fitzpatrick Building 130 Brrokhaven National Laboratory
- Upton, New York 11973 Dr.
C. J. Costantino Building 129 Brookhaven National Laboratory
- Upton, New York 11973 Dr. Steven M. Day Department of Geological Science San Diego State University San Diego, California 92182 Dr. George Gazetas Dept. of Civil Engineering 212 Ketter Hall SUNY-Buffalo Buffalo, New York 14260 Dr. Jean Savy Mail Code L-196 Lawrence Livermore National Laboratory P. 0.
Box 808 Livermore, California 94550 Dr. Anestis S. Veletsos 5211 Paisley Avenue
- Houston, Texas 77096 Dr.
Ken Campbell U.S. Geological Survey P. 0.
Box 25046, Mail Stop 966 Denver Federal Center
- Denver, Colorado 80225
Pacific Gas and Electric Company Diablo Canyon Long Term Seismic Program CC:
Dr. Michael Bohn Sandia Lab. - Organization 6412 Post Office Box 5800 Albuquerque, New Mexico 87185 Dr. J.
Johnson EQE 595 Market Street - 18th Floor San Francisco, California 94105 Dr. M. K. Ravindra EQE 3150 Bristol Street, Suite 350 Costa Mesa, California 92626
) ~
<~
ENCLOSURE 1
ATTENDEES Public Meeting on Seismic Ground Motion Diablo Canyon Long Term Seismic Program Wednesday, March 1, 1989 NAME Norm Abrahamson K. Aki Ralph J. Archuleta Bruce Bolt Frank W. Brady D. A. Brand Kenneth Campbell Ni lesh Chokshi Lloyd S. Cluff Kevin J. Coppersmith James Davis Steven Yi. Day Don Helmberger I. M. Idriss J. J.
Johnson Faiz Makdisi Robin K. McGuire David W. Ogden David Ovadia
'en M. Page Harry Rood Robert L. Rothman Ross Sadigh Bima 1 Sarkar
. W.
U. Savage Jean Savy Paul Somerville Yi-Ben Tsai Andy S. Veletsos W. H. Wallace W.
H. White ORGANIZATION Consultant to PG&E University of Southern California (NRC)
University.of California Santa Barbara (NRC)
PG&E Consultant PG&E PG&E US Geological Survey - Golden (NRC)
NRC/RES/PRAB PG&E Geomatr ix (PG&E)
California Division of Mines
& Geology San Diego State University (NRC)
Consultant to PG&E Consultant to PG&E Consultant to NRC Consultant to PG&E Risk Engineering, Inc.
(PG&E)
PG&E PG&E Consultant to ACRS (NRC)
NRC/NRR/PDV NRC/NRR/EGSB Geomatrix (PG&E)
Bechtel (PG&E)
PG&E LLNL (NRC)
Consultant to PG&E PG&E Rice University (BNL/NRC)
ENCLOSURE 2
ATTENDEES Public Meeting on Seismic Ground Motion Diablo Canyon Long Term Seismic Program
- Thursday, March 2, 1989 NAME Norm Abrahamson K. Aki
'Ralph J. Archuleta Frank W. Brady Kenneth Campbell Nilesh Chokshi Lloyd S. Cluff James Davis Steven M. Day Don Helmberger I. H. Idriss J. J.
Johnson Faiz Makdisi David W. Ogden Harry Rood Robert L. Rothman Ross Sadigh Bimal Sarkar W. U. Savage Jean Savy Paul Somervi lie Yi-Ben Tsai Andy S. Veletsos W.
M. White ORGANIZATION Consultant to PG&E University of Southern California (NRC)
University of California Santa Barbara (NRC)
PG&E US Geological Survey - Golden (NRC)
NRC/RES/PRAB PG&E California Division of Hines
& Geology San Diego State University (NRC)
Consultant to 'PG&E Consultant to PG&E Consultant to NRC Consultant to PG&E PG&E NRC/NRR/PDV NRC/NRR/EGSB Geomatrix (PG&E)
Bechtel (PG&E)
PG&E LLNL (NRC)
Consultant to PG&E PG&E Rice University (BNL/NRC)
Bechtel (PG&E)
0
~ I
ENCLOSURE 3 ATTENDEES Public Meeting on Seismic Ground Motion Diablo Canyon Long Term Seismic Program Friday, March 3, 1989 NAME Norm Abrahamson K. Aki
'Ralph J. Archuleta Frank W. Brady Kenneth Campbell Nilesh Chokshi Lloyd S. Cluff Steven M. Day Don Helmberger I. M. Idriss Richard F. Locke Faiz Makdisi David Ovadia Ben M. Page Harry Rood Robert L. Rothman Ross Sadigh Bimal Sarkar W.
U. Savage Jean Savy Harry Seed Yi-Ben Tsai Andy S. Veletsos W.
H. Wallace ORGANIZATION Consultant to PG&E University of Southern California (NRC)
University of California Santa Barbara (NRC)
PG&E US Geological Survey - Golden (NRC)
NRC/RES/PRAB PG&E San Diego State University (NRC)
Consultant to PG&E Consultant to PG&E PG&E Consultant to PG&E PG&E Consultant to ACRS (NRC)
NRC/NRR/PDV NRC/NRR/EGSB Geomatrix (PG&E)
Bechtel (PG&E)
PG&E LLNL (NRC)
Consultant to PG&E PG&E Rice University (BNL/NRC)
~i
ENCLOSURE 4
DIABLO CANYON LONG TERM SEISMIC PROGRAM NRC/PGRE MEETING ON GROUND MOTIONS ONE CALIFORNIA STREET, ROOM 271 SAN FRANCISCO, CALIFORNIA MARCH 1 3 1989 AGENDA WEDNESDAY MARCH 1
1989 8:00 a.m.
8:00 a.m.
8:15 a.m.
8:25 a.m.
9:15 a.m.
PGRE Pre-meeting Review - Room 271 NRC Caucus Room 202 Introduction NRC/PGRE Empirical Ground Motion Studies-K.
W. Campbell
Response
Spectra Sensitivity Studies-A. S. Veletsos 10:00 a.m.
Break 10:15 a.m.
Review of Seismic Source Characterization 10:30 a.m.
11:30 a.m.
12:00 noon 1:00 p.m.
2:45 p>>m>>
3:00 p.m.
3:45 p.m.
4:30 p.m.
Review of Empirical Ground Motions Program (Questions 4,
23, and 28)
Discussion Lunch Questions and Responses (Questions 5
through 11, and 17 Parts (b) and (c))
Break Seismic Hazards (Ground Motion Aspects)
NRC Caucus Discussion
DIABLO CANYON LONG TERM SEISMIC PROGRAM NRC/PG&E MEETING ON GROUND MOTIONS ONE CALIFORNIA STREET, ROOM 271 SAN FRANCISCO, CALIFORNIA MARCH 1 - 3 1989 AGENDA THURSDAY MARCH 2 1989 8:00 a.m.
Overview of Numerical Modeling Method and Results 8:45 a.m.
10:00 a.m.
Questions and Responses (Questions 12 and 15)
Break 10:15 a.m.
12:00 noon Questions and Responses (Questions 13, 14>
17 Part (a),
&, 20)
Lunch 1:00 p.m.
2:45 p.m.
3:00 p.m.
3:30 p.m.
Questions and Responses (Questions 13, 16, and 18)
Break NRC Caucus Discussion FRIDAY MARCH 3 1989 8:00 a.m.
Discussion and Summary of Ground Motions Resolution of Issues and Clarification of any Remaining Issues Closing Remarks
4 r Cf
~ arch 17, 1
9 2
7.
Provide a step-by-step discussion of the uncertainty in the numerical modeling study.
8.
Show the effect of different assumptions of fault type (strike slip, oblique slip, and reverse slip) in the numerical modeling study.
9.
Provide a comparison between the numerical modeling study and the frequency-wave number method of the 1.5 km and 3
km source depth contributions.
e fl gl 10.
Provide the eleven three-component time series for bilateral rupture, for both the Imperial Valley and Coal.inga aftershock sources from the numer ical modeling study.
11.
The amplitudes of low frequency portion of'the spectra generated in the numerical modeling study appear to be deficient.
At what frequencies are these spectra dependable?
12.
To aid in accessing the proposed lack of topographic effect at the Diablo Canyon site, provide a numerical study using vertically polarized shear waves with ground motion amplitude referenced to sea level.
In the morning of March 3
PG&E made presentations and there were discussions on questions 2, 4, 5, 6, 7.
PG&E stated that they will provide written submittals for the other items and will document the presentations on these five items.
Enclosures:
1.
Meeting Attendees, 3/1/89 2.
Meeting Attendees, 3/2/89 3.
Meeting Attendees, 3/3/89 4.
Meeting Agenda
/s/
Harry Rood, Senior Project Manager Project Directorate V
Division of Reactor Projects - III, IV, V and Special Projects 03/($ 89 cc: w/enclosures - see next page DRSP/PD5 DR
- PD5 HRood GK i hton 03/f//89 DISTRIBUTION ACR -1 NRC
& LPDRs GKnighton HRood JLee RRothman PDV Plant Files LDOCKET=FILE ~
OGC MVirgilio EJordan BGrimes NChokshi LReiter
ri 1j'4>>p t)4
)Jl
)I ')4 I
1
~
I
)
~ )
I'tp)ff P I >>f <<4>>