Letter Sequence Approval |
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Administration
- Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting
Results
Other: ML16341E593, ML16341F173, ML16341F859, ML16341F977, ML16342B496, ML16342B733, ML16342B782, ML17083B911, ML17083B920, ML17083C038, ML17083C053, ML17083C063
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MONTHYEARML17083B9111987-08-27027 August 1987
Trip Rept of 870609-11 Visit to Plant Re Audit of Calculational Programs to Evaluate Potential soil-structure Interaction Effects as Part of long-term Seismic Program. Summary of Items Audited Contained in Encl BNL
Project stage: Other
ML17083B9201987-09-0202 September 1987
Forwards List of Deterministic Comparisons Expected to Be Made in Order to Determine Whether & to What Extent Differences Between Earthquake Loads Exists.Comments on Proposed Comparisons Requested
Project stage: Other
ML17083C0381987-09-30030 September 1987
Requests Addl Info to Complete Analysis of Util Database Re Empirical Ground Motion & Plant Seismic Evaluation.Util Must Address Inconsistencies Found by K Campbell,Nrc Advisor for Diablo Canyon Seismic Reevaluation Program,Per
Project stage: Other
ML17083C0531987-10-15015 October 1987
Forwards BNL & Sandia Comments Re Plant Pra,Based on Util Matl Presented at 870217-18 Workshop in Bethesda,Md.Comments Re Overall Methodology & Special Investigations on Application.Nrc in Agreement W/Comments
Project stage: Other
ML17083C0631987-10-15015 October 1987
Forwards Revised Summary of NRC & Consultant Comments Made at 870715-16 Ground Motion Workshop.Nrc Still Not Clear About How Util Plans to Use Results of Ground Motion Studies in Soil Structure Interaction Analysis & PRA
Project stage: Other
ML17083C1171988-02-19019 February 1988
Forwards Summary of 880114-15 Meetings Re Plant PRA Study on Util long-term Seismic Program
Project stage: Meeting
ML16341E5931988-03-0909 March 1988
Forwards Jebco Seismic,Inc Ltr Discussing Offshore Seismic Data Collected in 1984 Near Facility & Requests Response Re Issues Raised by Ltr.Confidential Maps Attached May Be Released Per Telcon Between G Lichtman & R Rothman
Project stage: Other
ML17083C1091988-03-23023 March 1988
Forwards Summary of ACRS Subcommittee Meeting Held on 880223-24 in San Francisco Re long-term Seismic Program
Project stage: Meeting
ML17083C1371988-10-24024 October 1988
Summary of 881004 & 05 Meetings W/Util in Rockville,Md to Discuss Final Rept on long-term Seismic Program.Addl Info on Listed Items Must Be Submitted in Order to Continue Review of Rept.List of Attendees,Agenda & Viewgraphs Encl
Project stage: Meeting
ML16342B4961988-10-25025 October 1988
Summarizes 880225 NRC Audit of Selected Seismic Fragility Calculations Performed as Part of long-term Seismic Program. Fragility Curves for Specific Component,At Given Location, Should Not Be Used Generically
Project stage: Other
ML16341E8451988-10-25025 October 1988
Summary of 880328-30 Plant Walkdown by NRC Staff as Part of Review of PRA for Plant Long Term Seismic Program.Agenda & List of Attendees Encl
Project stage: Approval
ML16341E9221988-11-21021 November 1988
Summary of 880912-15 Public Meetings W/Util Re PRA & long-term Seismic Program for Plant.Agenda & Lists of Attendees Encl
Project stage: Meeting
ML16342C3531988-12-13013 December 1988
Forwards Request for Addl Info Re Plant long-term Seismic Program Final Rept.Response to PRA Questions Should Be Submitted by 890115 & Response to Other Questions by 890130
Project stage: RAI
ML16342B5131989-01-10010 January 1989
Forwards BNL Repts Describing Analyses of Low Pressure & High Pressure Functions of Eccs,As Part of Review of long-term Seismic Program Final Rept.Comments & Requests for Addl Info in Encl Rept Should Be Addressed by 890210
Project stage: Approval
ML16342C2121989-01-11011 January 1989
Summary of 881102 Meeting W/Util to Discuss Numerical Modeling of Ground Motions Used in Plant long-term Seismic Program Submitted by Util on 880731.Agenda,list of Attendess & Related Info Encl
Project stage: Meeting
ML16342B5211989-01-26026 January 1989
Notification of 890216 Meeting W/Util in San Francisco,Ca to Discuss Analysis of Selected Sys Important to PRA Re long- Term Seismic Program
Project stage: Meeting
ML16341E9891989-02-0707 February 1989
Forwards Listed Documents Relating to NRC Review of Long Term Seismic Program,Including BNL Review of Diablo Canyon PRA:High-Pressure Injection & Preliminary Rept on Empirical Studies of Horizontal Strong Ground Motion..
Project stage: Approval
ML17095A5401989-02-21021 February 1989
Notification of 890301-03 Meeting W/Util in Rockville,Md to Discuss NRC Questions & Util Responses Re Seismic Ground Motion & long-term Seismic Program
Project stage: Meeting
ML20246L9941989-03-15015 March 1989
Environ Assessment & Finding of No Significant Impact Re Amends to Licenses DPR-80 & DPR-82.Amends Would Revise Tech Specs by Revising Steam Generator Low & Low Low Level Setpoints for Initiating Reactor Trip
Project stage: Request
ML16341F0341989-03-17017 March 1989
Summary of 890301-03 Meetings W/Util in San Francisco,Ca to Discuss Response to Seismic Ground Motion Questions,Per
Project stage: Meeting
ML17083C1721989-03-29029 March 1989
Summary of 890216 Meeting W/Util & Consultants in San Francisco,Ca to Discuss PRA,890217 Audit of Relay Chatter Analysis & Facility long-term Seismic Program.List of Attendees Encl
Project stage: Meeting
ML16341F1081989-04-11011 April 1989
Responds to Util 890324 Request for Info Re Fee for Review of Seismic Reevaluation Program for Plant
Project stage: Approval
ML16341F1371989-04-11011 April 1989
Forwards Review of Diablo Canyon Seismic Reevaluation Program & Rept, Preliminary Rept on Empirical Analyses of Vertical Strong Ground Motion for Diablo Canyon Site, California, for Info
Project stage: Approval
ML16341F1731989-05-12012 May 1989
Forwards Ltr Repts -01,Rev 2,-04,Rev 1 & -05,Rev 5 Re long- Term Seismic Program
Project stage: Other
ML16342B5641989-05-26026 May 1989
Notification of 890616 & 17 Meeting W/Util in San Francisco, CA to Discuss Fragility Analysis Topics Re Recent NRC Questions Concerning Plant long-term Seismic Program
Project stage: Meeting
ML16341F1801989-05-26026 May 1989
Notification of 890612-16 Meeting W/Util in San Francisco,Ca to Discuss Geology,Seismology,Geophysics & Tectonics Topics Re NRC Questions on long-term Seismic Program
Project stage: Meeting
ML20247M1881989-05-26026 May 1989
Notification of 890613,14 & 15 Meetings W/Util in San Francisco,Ca to Discuss PRA Topics Re NRC Questions on long-term Seismic Program
Project stage: Meeting
ML16341F1921989-05-31031 May 1989
Forwards BNL Rev 1 to Ltr Rept-06, Review of Sys Analysis in Diablo Canyon Pra:Component CWS Reactor Coolant Pump Seal Cooling Equipment Re NRC Review of long-term Seismic Program
Project stage: Approval
ML16342B5711989-06-0101 June 1989
Forwards Request for Addl Info & Transmittal of Documents Re NRC Review of Plant long-term Seismic Program.Comments by NRC Consultants Also Encl
Project stage: RAI
ML16341F2221989-06-29029 June 1989
EN-89-066:on 890705,notice of Violation & Proposed Imposition of Civil Penalty in Amount of $75,000 Will Be Issued for Licenses.Action Based on Violations Involving Engineering & Design Control Re Auxiliary Feedwater Pumps
Project stage: Request
ML16341F2531989-07-21021 July 1989
Notification of 890808,09 & 10 Meetings W/Util in Rockville, MD to Discuss Earthquake Source characterization,long-term Seismic Program
Project stage: Meeting
ML16341F2711989-08-0101 August 1989
Summary of 890612-16 Meetings W/Pg&E & Other Listed Companies in San Francisco,Ca Re Geology/Seismology/ Geophysics/Tectonics long-term Program.Agenda & Attendee List Encl
Project stage: Meeting
ML20245F9261989-08-0707 August 1989
Summary of 890613-15 Meetings W/Util in San Francisco,Ca Re PRA long-term Seismic Program.List of Attendees & Agenda Encl
Project stage: Meeting
ML16341F3531989-09-29029 September 1989
Forwards Ltr Repts Re Responses to long-term Seismic Program & Questions on Final Rept of long-term Seismic Program.Rept Contents Will Be Discussed at 891102-03 Meeting Re Soil Structure Interaction
Project stage: Meeting
ML16341F3611989-10-0404 October 1989
Forwards Documents & Requests Addl Info Re Review of Plant long-term Seismic Program.Addl Info Required by 891031
Project stage: Approval
ML16341F3781989-10-0505 October 1989
Notification of Canceled 891024-26 Meetings W/Util & NRC Consultants in Bethesda,Md to Discuss Seismic Ground Motion & long-term Seismic Program
Project stage: Meeting
ML16341F3751989-10-13013 October 1989
Forwards Request for Addl Info long-term Seismic Program (LTSP) Seismic Source Characterization (SSC), Rept Re 890808-10 Meeting on SSC of LTSP, Rept Re 890808-10 Meeting & Rept Re 890808-10 Meeting
Project stage: RAI
ML16342C2351989-11-0909 November 1989
Notification of 891115 Meeting W/Util in Rockville,Md to Discuss Human Factors Analysis for PRA for long-term Seismic Program
Project stage: Meeting
ML16341F5121990-01-18018 January 1990
Notification of 900129 & 30 Meeting W/Util in San Francisco, CA to Review & Discuss Geophysical Data & Interpretations Along Hosgri Fault Zone Re Plant long-term Seismic Program
Project stage: Meeting
ML16341F5161990-01-19019 January 1990
Forwards Listed Documents,Including M Reich Re Task Assignment 17,FIN A-3841 & Ltr Rept-08, Review of Sys Analysis... & Requests Addl Info Re NRC Review of Plant long-term Seismic Program
Project stage: Approval
ML16341F5771990-02-23023 February 1990
Forwards Request for Addl Info Re NRC Review of Plant long- Term Seismic Program Covering Geology,Geophysics & Seismology Issues.Info Should Be Provided by 900331 to Prepare for mid-Apr 1990 Meeting
Project stage: RAI
ML16341F5981990-03-0606 March 1990
Notification of 900319 Meeting W/Util in Golden,Co to Review & Discuss Empirical Ground Motion Studies & Plant long-term Seismic Program
Project stage: Meeting
ML16341F6051990-03-14014 March 1990
Forwards Request for Addl Info Re NRC Review of Plant PRA Performed for long-term Seismic Program,Resulting from Review of Util Presentations at Recent Technical Meetings & Written Submittals
Project stage: RAI
ML16341F6041990-03-14014 March 1990
Notification of 900403,04 & 05 Meeting W/Util in Rockville, MD to Discuss NRC Evaluation of Electrical Power Sys & Fire Analysis of Plant PRA & Results of NRC Plant Quantification & Sensitivity Analyses Re long-term Seismic Program
Project stage: Meeting
ML16341F6451990-03-27027 March 1990
Notification of Change of Location for 900430 & 0501 Meetings W/Util in San Francisco,Ca to Discuss Ground Motion for Facility long-term Seismic Program
Project stage: Meeting
ML16341F6351990-03-27027 March 1990
Notification of 900430 & 0501 Meetings W/Util in San Francisco,Ca to Discuss Groundmotion for Plant long-term Seismic Program
Project stage: Meeting
ML16341F6401990-03-27027 March 1990
Notification of 900417-20 Meetings W/Util in San Francisco,Ca to Discuss Geology,Geophysics & Source Characterization for Plant Long Term Seismic Program
Project stage: Meeting
ML16342B6591990-03-30030 March 1990
Notification of 900416 Meeting W/Util in Golden,Co to Review & Discuss Empirical Ground Motion Studies as Part of long-term Seismic Program
Project stage: Meeting
ML16341F6601990-04-12012 April 1990
Forwards Documents & Request for Addl Info Re NRC Review of long-term Seismic Program During 900430 & 0501 Ground Motion Meeting
Project stage: RAI
ML16341F6701990-04-26026 April 1990
Requests Addl Info Re NRC Review of long-term Seismic Program
Project stage: Approval
1989-03-15
[Table View] |
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Docket Nos. 50-275 and 50-323 UNITEDSTATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 April 26, 1990 Mr. J.
D. Shiffer, Vice President Nuclear Power Generation c/o Nuclear Power Generation, Licensing Pacific Gas and Electric Company 77 Beale Street, Room 1451 San Francisco, California 94106
Dear Mr. Shiffer:
SUBJECT:
RE(VEST FOR ADDITIONAL INFORMATION RELATING TO NRC STAFF REVIEW OF DIABLO CANYON LONG TERM SEISMIC PROGRAM (LTSP)
(TAC NOS.
55305 AND 68049)
In Chapter 7 of the LTSP Final Report issued on July 31, 1988, you attempted to show that the plant structures and components have adequate seismic margins over the demands (plant responses) resulting from the 84th percentile ground motions due to the maximum magnitude earthquake.
In doing so you have back-calculated high confidence of low probability of failure (HCLPF) seismic capacities from the full fragility curves used in the seismic probabilistic risk assessment (PRA) studies.
These HCLPF capacities are defined in terms of average spectral accelerations for a specified range of frequencies, e.g.,
3 Hz to 8.5 Hz.
We generally agree with this methodology, but believe that the scope of the deterministic evaluations reported in the LTSP final report should be expanded.
In Chapter 7 of the LTSP final report, you compared, at selected locations in the major structures, the in-structure response spectra resulting from the LTSP site-specific ground motion with the in-structure response spectra for the plant seismic qualification basis (i.e., the Hosgri re-evaluation earthquake).
The location where such comparisons have been made appear to have been largely dictated by the location of the PRA-based structural elements and components.
We request that you augment the LTSP deterministic evaluations to include the following additional items:
1.
Compare the Hosgri-estimated structural response parameters such as base
- shear, overturning
- moment, and floor response spectra (including but not limited to the operating floor level) with similar, consistent, LTSP response parameters for all Category I structures.
2.
Compare the LTSP deterministic capacities with those predicted by the Hosgri analyses for selected structural elements and components.
For example, this comparison should be made for some of the structural elements and components identified as "weak links" during the Hosgri re-evaluation, such as the pipe-way structure, certain block walls and bolted connections in the Turbine Building, and the buried diesel fuel tanks.
900427028i 900426 PDR ADOCK 05000275 P
PDC
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April 26, 1990 3.
For some selected items discussed in guestions I and 2, above, provide alternate (code-based) capacity calculations to compare with the capacity calculations made using the Conservative Deterministic Fai lure Margin (CDFM) method.
In responding, we request that you use the CDFM methodology described in Electric Power Research Institute Final Report No. NP-6064, "A Methodology for Assessment of Nuclear Power Plant Seismic Margin", dated October 1988.
Also, these capacities should be expressed in terms of specific capacities such as base shear capacity, etc., rather than in terms of the acceleration levels (g's).
After the site-specific ground motion meeting scheduled for April 30 - May I, 1990, I suggest that we discuss the scope and methodology of deterministic evaluations.
The objective of these discussions would be to reach agreement on the selection of structural elements and components for which deterministic calculations are to be performed in response to this request, and on a submittal date for your response.
If you have any questions regarding this request, please contact me.
Sincer ely,
Enclosures:
as stated cc w/encl:
See next page original signed by Harry Rood Harry Rood, Senior Project Manager Project Directorate V
Division of Reactor Projects - III, IV, V and Special Projects Office of Nuclear Reactor Regulation DISTRIBUTION RPi NRC
& LPDRs GBagchi JZwol inski NChokshi PShea RRothman HRood JLarkins EJordan ACRS (10)
OGC (for information only)
PDV Plant File DR
/PD5 D
- PD5 HRood L
04/g5/90 04/m/90 OFFICIAL RECORD COPY OFo(
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3.
For some selected items discussed in guestions I and 2, above, provide alternate (code-based) capacity calculations to compare with the capacity calculations made using the Conservative Deterministic Failure Margin (CDFM) method.
In responding, we request that you use the CDFH methodology described in Electric Power Research Institute Final Report No. NP-6064, "A Methodology for Assessment of Nuclear Power Plant Seismic Margin", dated October 1988.
Also, these capacities should be expressed in terms of specific capacities such as base shear capacity, etc., rather than in terms of the acceleration levels (g's).
After the site-specific ground motion meeting scheduled for April 30 - Hay I,
- 1990, I suggest that we discuss the scope and methodology of deterministic evaluations.
The objective of these discussions would be to reach agreement on the selection of structural elements and components for which deterministic calculations are to be performed in response to this request.
If you have any questions regarding this request, please contact me.
S in cere ly,
Enclosures:
as stated cc w/encl:
See next page Harry R
d, Senior Project Manager Project Directorate V
Division of Reactor Projects - III, IV, Y and Special Projects Office of Nuclear Reactor Regulation
I
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Mr. J.
D. Shiffer Pacific Gas and Electric Company Diablo Canyon CC:
Richard F. Locke, Esq.
Pacific Gas E Electric Company Post Office Box 7442 San Francisco, Ca 1 ifornia 94120 Ms. Sandra A. Silver 660 Granite Creek Road Santa Cruz, California 95065 Mr. Peter H.
Kaufman Deputy Attorney General State of California 110 West A Street, Suite 700 San Diego, California 92101 Managing Editor The Count Tele ram Tribune 1321 Johnson Avenue P. 0.
Box 112 San Luis Obispo, California 93406 Ms. Nancy Culver 192 Luneta Street San Luis Obispo, California 93401 Reg iona 1 Administrator, Regi on V
U.S. Nuclear Regulatory Commission 1450 Maria Lane, Suite 210 Walnut Creek, California 94596 Mr. John Hickman Senior Health Physicist Environmental Radioactive Mgmt. Unit Environmental Management Branch State Department of Health Services 714 P Street, Room 616 Sacramento, Ca Iifornia 95814 NRC Resident Inspector Diablo Canyon Nuclear Power Plant c/o U.S. Nuclear Regulatory Commission P. 0.
Box 369 Avila Beach, California 93424 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 Rocky Canyon Star Route Creston, California 93432 Chairman San Luis Obispo County Board of Supervisors Room 270 County Government Center San Luis Obispo, California 93408 Michael M. Strumwasser, Esq.
Special Assistant Attorney General State of California Department of Justice 3580 Wilshire Boulevard, Room 800 Los Angeles, California 90010
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.Mr. J.
D. Shiffer Pacific Gas and Electric Company Diablo Canyon Long Term Seismic Program CC:
Dr. Keiiti Aki Department of Geological Sciences University Park University of Southern California Los Angeles, Califor nia 90089-0741 Dr. Ralph J. Archuleta Department of Geological Sciences University of California Santa Barbara Santa Barbara, California 93106 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. Robert D. Brown, Jr.
U.S. Geological Survey Hail Stop 977 345 Hiddlefie ld Road Menlo Park, California 94025 Dr. David B. Sleranons Center for Neotectonic Studies MacKay School of Mines University of Nevada-Reno
- Reno, Nevada 89557-0047 Dr. Robert Fitzpatrick Building 130 Brookhaven National Laboratory
- Upton, New Yor k 11973 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.O.
Box 25046, Hail Stop 966 Denver Federal Center
- Denver, Colorado 80225 Dr. C. J. Costantino Building 129 Brookhaven National Laboratory
- Upton, New York 11973 Dr. M. K. Ravindra EQE 3150 Bristol Street, Suite 350 Costa Mesa, California 92626 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
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