ML16340B002
| ML16340B002 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 05/07/1980 |
| From: | Schwencer A Office of Nuclear Reactor Regulation |
| To: | Furbush M PACIFIC GAS & ELECTRIC CO. |
| References | |
| NUDOCS 8005290076 | |
| Download: ML16340B002 (16) | |
Text
hQY 7 ]9'STet Files NRC'PDR Local PDR LB 83File DEisenhut RPurple RTedesco ASckwencer BBuckley JLee Rl<attson SHanauer JKnight Vtloore HKreger HErnst RDenise ELD IE (3)
Docket thos.':
50-27 0-323
Dear Yir. Furbush:
t:lr. Halcom H. Furbush Vice President and General Counsel Pacific Gas and Electric Conpany 77 Beale Street San Francisco, California 94106 bcc:
SUBJECT:
RE(UEST FOR ADDITIONAL IHFORtNTION IH REGARD TO DIABLO CAtlYOH, UHITS " Af<D 2 As part, of our licensing reviev> of the Diablo Canyon, Units 1 and 2, sFe find that N. require certain additional information in regard to the auto-matic svftchover of the emergency core cooling system from the infection to the recirculation mode following a loss-of-coo'lant accident (as deline-ated in the enclosure).
Please provide your response, iqithin five days of receipt of this letter, of your cemitment to provide the requested information and schedule for its submittal in accordance with those specified in the enclosures.
Sincerely, (begin'al Signed By A.Schwoncex A. Schmncer, Acting Chief Licensing Branch t<o. 3 Division of Licensing
Enclosures:
As stated
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cc:
See next, page 8008890~7g OFFICE SURNAME DATE/
'OL:LB 83 Beet<.l.ey.:.mac S) jso.
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,<, NRC FORM 318 (9-76) NRCM 0240 4U.R GOVERNMENT PRINTING OFFICE: 1979 289 369
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Mr. Malcolm H. Furbush cc:
Philip A. Crane, Jr.,
Fsq.
Pacific Gas
& Electric Company 77 Beale Street San Francisco, California 94106 Janice E. Kerr, Esq.
California Public Utilities Commission 350 McAllister Street San Francisco, California 94102 Mr. Frederick Eissler, President Scenic Shoreline Preservation Conference, Inc.
4623 More Mesa Drive Santa
- Barbara, California 93105
~
Ms. Elizabeth E. Apfelberg c/o Nancy Culver 192 Luneta San Luis Obispo, California 93401 Ms. Sandra A. Silver 1760 Alisal Street San Luis Obispo, California 93401 Hr. Gordon A. Silver 1760 Alisal Street San Luis Obispo, California 93401 Paul C. Valentine, Esq.
321 Lytton Avenue Palo Alto, California 94302 Yale I. Jones, Esq.
19th Floor 100 Van Ness Avenue San Francisco, California 94102 Mr. Richard Hubbard HHB Technical Associates Suite K
1723 Hamilton Avenue San Jose, California 95125 Mr. John Marrs Managing Editor San Luis Obispo County
'elegram
- Tribune 1321 Johnson Avenue P.
0.
Box 112 San Luis Obispo, California 93406 Elizabeth S.
Bowers, Esp.,
Chairman Atomic Safety
& Licensing Board U.
S. Nuclear Regulatory Cpn>o)Sation Washington, D.
C.
20555 Mr. Glenn O. Bright Atomic Safety
& Licensing Board U.
S. Nuclear Regulatory Commission Washington, D.
C.
20555 Tolbert Young P.
0.
Box 219 Avila Beach, California 93424 Richard S.
- Salzman, Esq.,
Chair'man Atomic Safety
& Licensing Appeal Board U.
S. Nuclear Regulatory Commission Washington, D.
C.
20555 Dr.
W.
Reed Johnson Atomic Safety
& Licensing Appeal Board U.
S. Nuclear Regulatory Commission Washington, D.
C.
20555 Alan S. Rosenthal, Esq.
Atomic Safety
& Licensing Appeal Borad U,
S. Nuclear Regulatory Commission Washington, D.
C.
20555 Ms, Raye Fleming 1920 Mattie Road Shell Beach, California 93440 Brent Rushforth, Esq.
Center for Law in the Public Interest 10203 Santa Monica Boulevard Los Angeles, California 90067 Arthur B. Gehr, Esq.
Snell
& Wilmer 3100 Valley Center
- Phoenix, Arizona 85073 Mr. James
- 0. Schuyler, Nuclear Projects Engineer Pacific Gas
& Electric Company 77 Beale,Street San Francisco, California 94106
n
Mr. Malcom H. Furbush.
cc:
Bruce Norton, Esq.
3216 North 3rd Street Suite 202 Phoenix, Arizona 85012 Mr.
W.
C. Gangloff Westinghouse Electric Corporation P. 0.
Box 355 Pittsburgh, Pennsylvania 15230 Michael R. Klein, Esq.
Wilmer, Cutler 8 Pickering 1666 K Street, N.
W.
Washington, D.
C.
20006 David F. Fleischaker, Esq.
Suite 709 1735 Eye Street, N.
W.
Washington, D.
C.
20006 Dr. William E. Martin Senior Ecologist Battelle Memorial Institute
- Columbus, Ohio 43201 W. Andrew Baldwin, Esq.
124 Spear Street San Francisco, California 94105 Resident Inspector/Diablo Canyon NPS c/o U.
S.
NRC P.
0.
Box 219 Avi 1 a Beach, Cali forni a 93424 California Department of Health ATTN:
Chief, Environmental Radi ati on Control Unit Radiologic Health Section 714 P Street -
Room 498 Sacramento, California 95814
- Chairman, San Luis Obispo County Board of Supervisors County Courthouse Annex -
Room 220 San Luis Obispo, California 93401 U. S. Environmental Protection Agency ATTN:
EID Coordinator Region IX Office 100 California Street San Francisoc, California 94111
A
'l L s
Enclosure RSB Branch Technical Position for Diablo Canyon We have rereviewed the manual switchover approved in the Diablo Canyon SER dated October 16, 1974 in connection with" NPSH and RWST topics and find that the manual procedure with supplemental automatic RHR pump trip continues to be acceptable based on analyses of time available for operator response.
- However,
/
our position is that the switchover to the recirculation mode be more fully
'utomated during the longer term to reduce the operator manual actions needed subsequent to a loss-of-coolant accident.
We require compliance according to the following schedule:
1.
We require replacement with an automatic design complying with the enclosed criteria.
2, Within 120 days of receipt of this letter, we require submittal of the proposed conceptual design identifying each change and committing to a schedule
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for submittal of. a final design package for staff review.
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DIABLO.CANYON; UNITS 1
5 2 REQUEST FOR ADDITIONAL INFORMATION l.
The minimum flow entering the reactor ccciant sys-.em d"ring and after the switchover, shall be sufficient to rcmove fission product aecay heat a'ssuming any single active failur The design o
the controls and ins.ru;.e.; at on shall permit manual operation of the ECC and containment spray systems from the con-.rol room at the component level both prior to and after the transfer to the recirculation mode has been accomplisned.
3.
The switchover of the ECCS from the injection to the recirculation mode of operation shall be automated such that required operator actions are minimized, and uninterrupted ECCS flow is provided to the core.
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4.
The systems must be able to perform their function despite any single postulated instrumentation and control failure, or any postulated single active failure in a,fluid system.
No single failure shall:
a.
Prevent automatic transfer to the recirculation mode of operation, or b.
Cause inadvertent automatic transfer to the recirculation mode of operation of both trains of the ECC or the containment spray systems.
5.
The design of the controls and instrumentation shall meet IEEE Std. 279-1971.
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6.
The ESF switchover system shall use seismically qualified components and the switchover shall be to a seismically quali ied water supply.
7.
To reduce the probability of the operator prematurely performing manual actions in the switchover procedure, the procedures shall include provisions for the verification of the water storage tank level prior to beginning the manual switchover actions.
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SO D51A Go&
APR 21 ]980 Docket Nos:
50-275 and 50-323 Mr. Malco1m H. Furbush Vice Pres'ident 8 General Counsel Pacific Gas 8 Electric Company 77 Beale Street San Francisco, California 94106
Dear Mr. Furbush:
et oe NRC PDR Local PDR NSIC TIC TERA ACRS (16)
NRR Reading LWR 81 File D. F. ooss D. B. Vassallo S. A. Varga F. J. Williams R. J. Mattson J.
F. Stolz
" B. C. Buckley E.
G. Hylton S.
H. Hanauer J.
P. Kni'ght R. L. Tedesco R.
C.
DeYoung'.
A. Moore W. Kreger M. L. Ernst R. P. Denise ELD IE (3).
SUBJECT:
GUIDE TUBE WEAR - TECHNICAL REFERENCE SOURCES (DIABLO CANYON, Ut)ITS 1
Ec 2)
During our review of the Diablo Canyon FSAR, we requested that you incorporate-by reference the i,tems listed below, Since substantial technical information.
on which we based our conclusions is presented in these items, and since these proprietary letters are not generally available we request that references 1,
2 and 3 be submitted on your docket to provide a retrievable reference on the subject of guide tube wear.
1.
T. M. Anderson (QW letter (NS-TtlA-1936) to D. G. Eisenhut
('USNRC), dated September 12, 1970.
2.
T. M, Anderson (W} letter (NS-TtlA-1992) to D. G. Eisinhut (USttRC), dated December 15, 197K 3.
T.
M. Anderson (W) letter (NS-TNA-2102) to D. G. Eisenhut (USNRC), dated June 27, 1979.
lte request that this information be incorporated in your next revision to the FSAR.
Sincerely, gj118I1 QigQB gl0g11 F.
St012'ohn F..Stolz, Chief Light Water Reactors Branch No.
1 Division of Prospect Management CC'o See next page OFFICE SURNAME OATE1
,DPM:LWR.Impel...
BCBuckley:pc 04/
/80 DPH: NR.N.
JFStolz 04/
/80 NRC FORM 318 (9-76) NRCM 0240
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4U.S. GOVERNMENT PRINTING OFFICE: 1979'289 369 '
I C*
Y4
~ I C
Hr. Malcolm H. Furbush I
cc:
Philip A. Crane, Jr.,
Esq.
Pacific Gas 8 Electric Company 77'eal@ Street San Francisco, California 94106 Janice E. Kerr, Esq.
California Public Utilities Commission 350 HcAllister Street San Francisco, California 94102 Hr. Frederick Eissler, President Scenic Shoreline Preservation Conference, Inc.
4623 More Mesa Drive Santa
- Barbara, California 93105 Ms.
E 1 izabe th E.
Apfel be rg c/o Nancy Culver 192 Luneta San Luis Obispo, California 93401 Ms. Sandra A. Silver 1760 Alisal Street San Luis Obispo, California 93401 Mr. Gordon A. Silver 1760 Alisal Street San Luis Obispo, California 93401 Paul C. Valentine, Esq.
321 Lytton Avenue Palo Alto, California 94302 Yale I. Jones, Esq.
19th Floor 100 Van'Ness Avenue San Francisco, California 94102 Hr. Richard Hubbard MHB Technical Associates
'.Suite K
1723 Hamilton Avenue San Jose, C'alifornia 95125 Hr. John Marrs Managing Editor San Luis Obispo County Telegram - Tribune 1321 Johnson Avenue PE 0.
Box 112 San Luis Obispo, California 93406 Elizabeth S.
- Bowers, Esq.,
Chairman Atomic Safety
& Licensjpg Board U.
S. Nuclear Regulatory pygmy]ljssion Washington, D.
C.
20555 Hr. Glenn 0. Bright Atomic Safety
& Licensing Board U.
S. Nuclear Regulatory Commission Washington, D.
C.
20555 Tolbert Young P.
0.
Box 219 Avila Beach, California 9'3424 Richard S.
- Salzman, Esq.,
Chairman Atomic Safety 8 Licens'ing.Appeal Board U.
S. Nuclear Regulatory Commission Washington, D.
C.
20555 Dr.
W.
Reed Johnson Atomic Safety
& Licensing Appeal Board U.
S. Nuclear Regulatory Commission Washington, D.
C.
20555 Alan S. Rosenthal, Esq.
Atom>c Safety 8 Lscens>ng Appeal Borad U.
S. Nuclear Regulatory Commission Washington, DE CD 20555 Hs.
Raye Fleming 1920 Mattie Road Shell Beach, California 93440 Brent Rushforth, Esq.
Center for Law in the Public Interest 10203 Santa Monica Boulevard Los Angeles, Californ'ia 90067 Arthur B. Gehr, Esq.
Snell
& Wilmer 3100 Valley Center Phoenix, Arizona 85073 Hr.
James
- 0. Schuyler, Nuclear Projects Engineer Pacific Gas
& Electric Company 77 Beale Street San Francisco, California 94106
Mr. Malcolm H. Furbush cc:
Bruce Norton, Esq.
3216 North 3rd Street Suite 202 Phoenix, Arizona 85012 Mr.
W.
C. Gangloff Westinghouse Electric Corporation P.
0.
Box 355 Pittsburgh, Pennsylvania 15230 Michael R. Klein, Esq.
Wilmer, Cutler 5 Pickering 1666 K Street, N.
W.
~ Washington, D.
C.
20006 David F.
Fl ei schaker, Esq.
Suite 709 1735 Eye Street, N.
W.
Washington, D.
C.
20006 Dr. William E. Martin Senior Ecologist Battelle Memorial Institute
- Columbus, Ohio 43201 W. Andrew Baldwin, Esq.
124 Spear Street San Francisco, California 94105 Resident Inspector/Diablo Canyon NPS c/o U,
S ~
NRC P. 0.
Box 219 Avila Beach, California 93424