ML16341B464
| ML16341B464 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 12/12/1980 |
| From: | Olmstead W NRC OFFICE OF THE EXECUTIVE LEGAL DIRECTOR (OELD) |
| To: | NRC ATOMIC SAFETY & LICENSING APPEAL PANEL (ASLAP) |
| References | |
| ISSUANCES-OL, NUDOCS 8012290417 | |
| Download: ML16341B464 (12) | |
Text
UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION 12/12/j0 I
I AND LICENSING APPEAL BOARD ~-~~~
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Docket Nos. 50-275 O.Lg 50-323 O.C.
(Seismic)
BEFORE THE ATOMIC SAFETY in the Matter of
)
)
PACIFIC GAS AND ELECTRIC COMPANY
)
)
(Diablo Canyon Nuclear Power
)
Plant, Unit Nos.
1 and 2) l~
0 e
NRC STAFF
RESPONSE
TO BOARD'S RE(UEST FOR INFORMATION ON SYSTEMS INTERACTION By letter of November 24, 1980, the Appeal Board requested information concerning the present status of the Applicant's studies on systems inter-actions.
The Board also wished to be advised of the relevance of the ongoing studies to the seismic issues currently pending before it.
The Staff has completed review of Pacific Gas and Electric Company's (PGEE's) systems interaction program for seismically-induced events.
The results of its review are summarized in Supplement No.
11 to NUREG-0675, "Safety Evaluation Report Related to the Operation of Diablo Canyon Nuclear Power Plant, Units 1 and 2," dated October 1980.
As stated in Section 8.0 of Supplement No. 11, the Staff concluded that PGEE's program is acceptable.
PGEE will complete their program and any necessary plant modifications for each unit prior to the issuance of any license authorizing full-power operation of that unit as required by Task II.C.3, "Systems Interaction", of NUREG-0660, "NRC Action Plan Developed as a Result of the TMI-2 Accident."
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The completion of PGRE's program and the acceptability of any plant modifications will be verified by the Office of Inspection and Enforce-ment during the normal course of their inspection activities.
PGEE will, following the completion of their program, provide the NRC information copies of their final report of their program which will include an identifica-tion of all interactions postulated, all walkdown data (as described in Section 4
of SER Supp. 11), interaction resolutions, and technical reports.
The final report of PGRE's program was not a prerequisite to either the completion of the Staff's review of PGEE's program nor its determination of its acceptability.
PGEE has completed essentially all of their walkdown effort for Unit 1 and ll has begun their walkdown effort for Unit 2.
All that remains for Unit 1 is the completion of any necessary modifications.
The matters treated in this program have no direct bearing on the seismic design bases for the Diablo Canyon Plant, i.e.
on determination of the ground motion spectral shape or the anchor point f'r that spectral shape.
The systems interaction program for seismically induced events
- does, however, add one more element of conservatism to the anticipated seismic capability of the Diablo Canyon plant, in that the likelihood of even very minor system malfunctions due to seismic shaking have been substantially reduced below an already low level.
This program was initiated, in response to a specific Diablo Canyon require-ment documented in NUREG-0660,Section II.C.3.
The requirement was imposed
by the Staff as a result of recommendations of the ACRS Ad Hoc Subcommittee on THI-2 Accident Implications.
Any issue regarding the adequacy of this program still lies before the Licensing Board as part oF its consideration of post TNI issues and is therefore not yet ripe for consideration by this Appeal Board unless it should direct certification of the issue.
Respectfully submitted, Lead Counsel or the NRC Staff Dated at Bethesda, Maryland this 12th day of December, 1980.
UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION BEFORE THE ATONIC SAFETY AND LICENSING APPEAL BOARD In the Hatter of PACIFIC GAS AND ELECTRIC COMPANY
)
(Diablo Canyon Nuclear Power Plant Unit Nos.
1 and 2)
)
Docket Nos.
50-275 O.L.
50-323 O.L.
(Seismic)
CERTIFICATE OF SERVICE I hereby certify that copies of "NRC STAFF
RESPONSE
TO BOARD'S REQUEST FOR INFORMATION ON SYSTEMS INTERACTION" in the above-captioned proceeding have been served on the following by deposit in the United States mai 1, first class, or as indicated by an asterisk, through deposit in the Nuclear Regulatory Commission's internal mail system, this 12th day of December, 1980:
- Richard S.
- Salzman, Esq.,
Chairman Atomic Safety and Licensing Appeal Board U.S. Nuclear Regulatory Commission Washington, D.C.
20555
- Or. John H. Buck Atomic Safety and Licensing Appeal Board U.S. Nuclear Regulatory Commission Washington, D.C.
20555
- Dr. W.
Reed Johnson Atomic Safety and Licensing Appeal Board U.S. Nuclear Regulatory Commission Washington, D.C.
20555
- Hr. Thomas S.
- Moore, Member Atomic Safety and Licensing Appeal Board U.S. Nuclear Regulatory Commission Washington, D.C.
20555
- Elizabeth S. Bowers, Esq.
Atomic Safety and Licensing Board U.S. Nuclear Regulatory Coomission Washington, D.
C.
20555 Elizabeth Apfelberg 1415 Cozadero San Luis Obispo, California 93401
- fir. Glenn 0. Bright Atomic Safety and Licensing Board U.S. Nuclear Regulatory Commission Washington, D.C.
20555
- Dr. Jerry Klinc Atomic Safety and Licensing Board U. S. Nuclear..Regulatory Cormission Washinaton, D.
C.
20555 Philip A. Crane, Jr.,
Esq.
Pacific Gas and Electric Company Room 3127 77 Beale Street San Francisco, California 94106 Hr. Frederick Eissler Scenic Shoreline Preservation Conference, Inc.
4623 More Mesa Drive Santa Barbara, California 93105 Hrs.
Raye Fleming 1920 Mattie Road Shall Beach, California 93449 Richard E. Blankenburg, Co-publisher Wayne A. Soroyan, News Reporter South County Publishing Company P.O.
Box 460 Arroyo Grande, California 93420
Marjorie Nordlinger Office of General Counsel U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Mr. Gordon Silver 1760 Alisal Street San Luis Obispo, California 93401 John R. Phillips, Esq.
Simon Klevansky, Esq.
Margaret Blodgett, Esq.
Marion P. Johnston, Esq.
Joel
- Reynolds, Esq.
Center for Law in the Public Interest 10203 Santa Monica Boulevard Los Angeles, California 90067 Arthur C. Gehr, Esq.
Snell 5 Wilmer 3100 Valley Center Phoenix, Arizona 95073 Paul C. Valentine, Esq.
321 Lytton Avenue Palo Alto, California 94302 Byron S. Georgiou Legal Affairs Secretary Governor's Office State Capitol Sacramento, California 95814 Bruce Norton, Esq.
3216 North 3rd Street Suite 202
- Phoenix, Arizona 85102 David S. F')eischaker, Esq.
Suite 709 1735, Eye Street, N.W.
Washington, D.C.
20006 Richard B. Hubbard MHB Technical Associates 1723 Hamilton Avenue - Suite K
San Jose, California 95125 John Marrs Managing Editor San Luis Obispo County Telegram-Tribune 1321 Johnson Avenue P. 0.
Box 112 San Luis Obispo, California 93406 Andrew Baldwin, Esq.
124 Spear Street San Francisco, California 94105 Herbert H. Brown Hill, Christopher 5 Phillips. P.C.
1900 M. Street, N.W.
Washington, D.C.
20036 Harry M. Willis Seymour 8 Willis 601 California St., Suite 2100 San Francisco, California 94108 Janice E. Kerr, Esq.
Lawrence g. Garcia, Esq.
350 McAllister Street San Francisco, California 94102 Mr. James
- 0. Schuyler Nuclear Projects Engineer Pacific Gas and Electric Company 77 Beale Street San Francisco, California 94106
Mrs. Sandra A. Silver 1760 Alisal Street San Luis Obispo, California 93401 "Atomic Safety and Licensing Board Panel U.S. Nuclear Regulatory Comnission
~
Washington, D.C.
20555
- Atomic Safety and Licensing Appeal Panel U.S. Nuclear Regulatory Commission Washington, D.C.
20555
- Secretary 4.S.
Nuclear Regulatory Commission ATTN:
Chief, Docketing 8 Service Br.
Washington, D.C.
20555 iam gstea Lead Counsel for the NRC Staff
I