ML16341D627
| ML16341D627 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 02/25/1986 |
| From: | Novak T, Speis T Office of Nuclear Reactor Regulation |
| To: | Ballard R, Norris J, Rossi C Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML16341D628 | List: |
| References | |
| NUDOCS 8603050499 | |
| Download: ML16341D627 (14) | |
Text
Docket Nos.:
50-275 and 50-323 MEMORANDUM FOR:
FROM:
February 25, =1986.
~
DI oc et Fi emo s
e Jan A. Norris, Acting Director PAD-3 Rdg PWR Project Directorate No.
3 S.
Varga Division of PWR Licensing-A H. Schierling C.
Vogan Charles E. Rossi, Assistant Director G. Giese-Koch Division of PWR Licensing-A S.
Brocoum L. 'Reiter Ronald L. Ballard, Chief D. Jeng Engineering Branch N. Chokshi Division of PWR-A L. Chandler D. Eisenhut Frank J.
Congel, Chief Reliability 8 Risk Assessment Branch Division of Safety Review and Oversight I
Hans Schierling, Senior'roject Manager PWR Project Directorate No.
3 Division of PWR Licensing;A Thomas M. Novak, Acting Director Division of PWR Licensing-A C
Themis P. Speis, Director Division of Safety Review and Oversight DIABLO CANYON - MEMORANDUM OF UNDERSTANDING FOR NRR EVALUATION OF LONG TERM SEISMIC PROGRAM The purpose of this memorandum is to formalize the NRR evaluation for the Pacific Gas and Electric Company (PGIIE) Long Term Seismic Program (LTSP) for Diablo Canyon and to establish the specific functions to be performed by the Division of PWR Licensing-A and the Division of Safety Review and Oversight.
Specific assignments and responsibilities are listed in Enclosure 1 and discussed below.
The need for the program was first identified in a July 14, 1978 ACRS letter on Diablo Canyon.
The scope of the program was discussed several times by the staff with the Commission and the ACRS during the 1984/1985 licensing activities for Units 1 and 2.
The need for an active participation by the staff in this effort, in particular regarding a parallel and independent program by the NRC and consultants is addressed in an OPE memo to the Commissioners (Enclosure 2).
The requirement for the program, including four specific elements and schedule, were included in the Unit 1 full-power CONTACT:
H. Schierling 492-8856 860305049V 860225 I
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February 25, 1986 license (Enclosure
- 3) issued on November 2, 1984.
PG&E submitted its plan for the LTSP in January 1985.
After meetings with PG&E and the ACRS the Staff approved the LTSP plan in July 1985 (Enclosure 4).
The program is scheduled to be completed in mid-1988.
The LTSP constitutes a major effort by PG&E. It requires evaluation efforts and analyses in the areas of geology, seismology, ground motion, soil-structure interaction, and probabilistic risk assessment (PRA).
PG&E has formed a large task group for the LTSP, including consultants and an advisory board of experts.
The NRR technical review of the program plan and interaction with PG&E in the previous NRR organization were principally performed by GSB (S.
- Brocoum, R. McMullen, L. Reiter, R. Rothman) with respect to geology, seismology and ground motion, SGEB (P..T.
Kuo and H. Polk) with respect to soil-structure interaction, and RRAB (S. Israel) with respect to PRA aspects.
Management technical direction was with DE (J.
P. Knight).
Overall NRR coordination,
- program, schedule and licensing direction was provided by the Diablo Canyon PM (H. Schierling).
The
Slemmons (U of Nevada) participated as consultants in the program evaluation.
In addition, two advisory panels of experts were recently formed through BNL and Lawrence Livermore National Laboratory (LLNL) in the areas of soil-structure interaction and theoretical ground motion modelling, respectively, to provide the staff with independent assessments.
Contractual arrangements and support were provided by DE.
As a result of the NRR reorganization the Diablo Canyon project is now assigned to the Division of PWR Licensing-A; however, most of the technical reviewers have been assigned outside this division.
These individuals developed the basis for the LTSP license condition, actively interacted with PG&E during the LTSP plan development, were involved in NRR presentations to the Commission and the ACRS, and are familiar with the complex background of the entire matter of reevaluation of the seismic design bases going back to the initial ACRS request in 1978.
The review and evaluation of the PG&E program and the parallel independent efforts by the NRC will be performed in accordance with the functional objectives of the new NRR organization and by utilizing the expertise of certain individuals previously associated with the LTSP.
Three organizations within PWR-A and DSRO will participate in the effort and are responsible as follows:
. 1.
Division of PWR Licensing A - Project Directorate No.
3 (PAD3):
Overall program management; responsible for completion of program in accordance with license condition.
f February-25, 1986 1 t
2.
Division of PWR Licensing A -'ngineering'-Branch (EB):
'anagement and integration of all technical aspects; technical interacting with licensee at management level; administration of all contracts with consultants; support to RRAB in review and evaluation of matters regarding'oil-structure interaction and seismology.
3.
Division of Safety Review and Oversight - Reliability and Risk Assessment Branch (RRAB):
Lead for detailed review and evaluation of tectonics,
- geology, seismology, earthquake magnitude, groundmotion, soil-structure interaction, and PRA including fragility aspects.
Specific individual assignments in each of the three organizations are identified in Enclosure
- 1. If expertise or participation from other groups is required such need will promptly be identified for management consider-ation.
The combined DSRO effort for FY 1986 through 1987 is expected to be approximately 0.5 man year per FY.
Consultant(s) for the PRA effort will be required in addition to those identified above.
Funding for all contracts with consultants will be provided by PWR-A.
Because of the complexity and duration of the LTSP and in order to assure overall continuity and consistency of the NRR review frequent interactions among the NRR staff will be necessary, including NRR internal staff meetings.
Requests for information, final technical positions, safety evaluations, etc. will be transmitted by memo.
Direct interactions between NRR reviewers and the PG&E technical staff shall continue as in the previous NRR organization.
Formal interaction between the staff and PG&E will be maintained through the Project Manager.
The Chief of the Engineering
- Branch, PWR-A, shall provide the technical interaction with the licensee at the management level.
The LTSP by PG&E is a major effort which could set a precedent for the application of new methodologies in other seismic design evaluations.
- Thus, the joint effort will serve the objectives and responsibilities of both PWR-A and DSRO.
We are jointly committed to provide the necessary resources for a thorough evaluation of the program and its results.
The success of the program will depend, in part on the NRC parallel and independent effort by its consultants and the staff's interaction with PG&E during the course of the program.
We request that you brief us on the progress of the program within about six months.
The NRR effort as described in this memorandum of understanding is hereby approved.
/s/SVarga for Thomas M. Novak, Acting Director Division of PWR Licensing-A rlrÃAr, Sramo Sy Themis P. Speis, Directo Division of Safety Review and
Enclosures:
As stated
- SEE PREVIOUS PAGE FOR CONCURRENCES*
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Division of PWR Licensing A - Engineering Branch (EB):
Management and integration of all technical aspects; technical interacting with licensee at management level; administration of all contracts with consultants; support to RRAB in review and evaluation of matters regarding soil-structure interaction and seismology.
3.
Division of Safety Review and Oversight - Reliability and Risk Assessment Branch (RRAB):
Lead for detailed review and evaluation of tectonics,
- geology, seismology, earthquake magnitude, groundmotion, soil-structure interaction, and PRA including fragility aspects.
Specific individual assignments in each of the three organizations are identified in Enclosure l. If expertise or participation from other groups is required such need will promptly be identified for management consideration.
Funding for all contracts with consultants will be provided by PWR-A.
Because of the complexity and duration of the LTSP and in order to assure overall continuity and consistency of the NRR review frequent interactions among the NRR staff will be necessary, including NRR internal staff meetings.
Requests for information, final technical positions, safety evaluations, etc. will be transmitted by memo.
Direct interactions between NRR reviewers and the PGSE technical staff shall continue as in the previous NRR organization.
Formal interaction between the staff and PGRE will be maintained through the Project Manager.
The Chief of the Engineering
- Branch, PWR-A, shall provide the technical interaction with the licensee at the management level.
The LTSP by PGSE is a major effort which could set a precedent for the application of new methodologies in other seismic design evaluations.
- Thus, the joint effort will serve the objectives and responsibilities of both PWR-A and DSRO.
We are jointly committed to provide the necessary resources for a thorough evaluation of the program and its results.
The success of the program will depend, in part on the NRC parallel and independent effort by its consultants and the staff's interaction with PGRE during the course of the program.
We request that you brief us on the progress of the program within about six months.
The NRR effort as described in this memorandum of understanding is hereby approved.
Thomas M. Novak, Acting Director Division of PWR Licensing-A Themis P. Speis, Director Division of Safety Review and Oversight
Enclosures:
D/PWR-A As stated
- SEE PREVIOUS PA E
FOR CONCURRENCES*
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PAD-3 D/PAD-3*
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Division of PWR Licensing A - Engineeriyg Branch (EB):
Management and integration of all technical aspects; technical interacting with licensee at management level; administration of all contracts with consultants; support to RRAB in review and evaluation of matters regarding so'il-structure interaction and seismology.
1f 3.
Division of Safety Review and Oversight - Reliabjlity and Risk Assessment Branch (RRAB):
Lead for detailed review and evaluation of tectonics,
- geology, seismology, earthquake magnitude,.groundmotion, soil-structure interaction, and PRA including fragil,ity aspects.
1 Specific individual assignments in, each of the three organizati,ons are identified in Enclosure
- 1. If expertise or participation from other groups is required such need will promptly be identified for management consideration.
Funding for all contracts with consultants will be provided by PWR-A.
Because of the complexity and duration of the LTSP and in order to assure overall continuity and consistency of the NRR review frequent interactions among the NRR staff will be necessary, including NRR internal staff meetings.
Requests for information, final technical positions, safety evaluations, etc. will be transmitted by memo.
Direct interactions between NRR reviewers and the PGSE technical staff shall continue as in the previous NRR organization.
Formal interaction between the staff and PGSE will be maintained through the Project Manager.
The Chief of the Engineering
- Branch, PWR-A, shall provide the technical interaction with the licensee at the management level.
The LTSP by PGSE is a major effort which could set a precedent for the application of new methodologies in other seismic design evaluations.
- Thus, the joint effort will serve the objectives and responsibilities of both PWR-A and DSRO.
We are jointly committed to provide the necessary resources for a thorough evaluation of the program and its results.
The success of the program will depend, in part on the NRC parallel and independent effort by its consultants and the staff's interaction with PGSE during the course of the program.
We request that you brief us on the progress of the program within about six months.
The NRR effort as described in this memorandum of understanding is hereby approved.
Steven A. Varga, Acting Deputy Director Division of PWR Licensing-A Themis P. Speis, Director Division of Safety Review and Oversight
Enclosures:
As stated
- SEE PREVIOUS PA PAD-3*
PAD-3 CVogan HSchie 02/20/86 02+4'86 R CONCURRENCES*
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Division of PWR Licensing A - Engineering Branch "(EB):
Management and integration of all technical aspects; technical interacting with licensee at management level; administration of all contracts with consultants; support to RRAB in review and evaluation of matters regarding soil-structure interact n and seismology.
3.
Division of Safety Review and Oversight - Reliabil y and Risk Assessment Branch (RRAB):
Lead for detailed review and evaluation of tec ics, geology, seismology, earthquake magnitude, groundmotio
, soil-structure interaction, and PRA including fragility as cts.
Specific individual assignments in each of the thr e organizations are identified in Enclosure
- 1. If expertise or part ipation from other groups is required such need will promptly be identif d for management consideration.
Funding for all contracts wit consultants will be provided by PWR-A.
Because of the complexity and duration o
the LTSP and in order to assure overall continuity and consistency of e
NRR review frequent interactions among the 'NRR staff will be necessary including NRR internal staff meetings.-
Requests for information final technical positions, safety evaluations, etc. will be transmi ed by memo.
Direct interactions between NRR reviewers and the PG technical staff shall continue as in the previous NRR organization.
For al interaction between the staff and PG&E will be maintained through t Project Manager.
The Chief of the Engineerinq
- Branch, PWR-A, all provide the technical interaction with the licensee at the managemen evel.
" jor, effort'hich could set a precedent for the application of new me odol'o'gies in other seismic evaluations.
Thus, the joint effort will s ve,,the objectives and responsibilities of both PWR-A and DSRO.
We are " intly committed to 'provide the necessary resources for a thorough evalua ion of the program and its results.
The success of the program will de nd, "in part'n the NRC parallel and independent effort by its consultant and the staff's interaction with PG&E during the course of the program.
e request that you brief us on the progress of the program within abou six months.
The NRR effort as described in this memorandum of understand g is hereby approved.
Hugh L. Thompson, Jr., Director Division of PWR Licensing-A Themis P. Speis, Director Division of Safety Review and Oversight A -3 WR D/SRO ga HT son TSpeis
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Enclosures:
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ENCLOSURE 1
NRR ASSIGNMENTS FOR DIABLO CANYON LONG TERM SEISMIC PROGRAM 1.
Licensing Project Management 2.
Technical Management and Oversight 3.
Contract Administration and Oversight 4.
Tectonics and Geology 5.
Earthquake Magnitude 6.
Seismology and Groundmotion 7.
Soil-Structure Interaction 8.
- a. Seismic Hazard
- b. Fragility H. Schierling, PAD-3 R. Ballard, PWR-A/EB G. Giese-Koch, PWR-A/EB S.
- Brocoum, DSRO-RRAB*
R. Brown, USGS D. Slemmons, U of N (Consultant)
L. Reiter, DSRO-RRAB*
D. Slemmons, U of N (Consultant)
L. Reiter, DSRO-RRAB*
G. Giese-Koch, PWR-A/EB N. Chokshi, DSRO-RRAB*
D. Jeng, PWR-A/EB BNL Consultant Panel N. Chokshi, DSRO-RRAB*
Consultant Panel (to be established)
L. Reiter, DSRO-RRAB*
G. Giese-Koch N. Chokshi, DSRO-RRAB*
D. Jeng, PWR-A/EB
- Combined DSRO effort for FY 1986 through 1987 will be 0.5 man year per FY.