ML20209C501
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g UNITED STATES NUCLEAR REGULATORY COMMisslON
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....J OCT t 21983 MEMORANDUM FOR:
FROM:
R. Wayne Houston, Assistant Director for Reactor. Safety Division of Systems Integration
SUBJECT:
DIABLO CANYON SER SUPPLEMENT INPUT P1 ant Name:
Diablo Canyon Unit 1 Docket No.:
50-275 Licensing Status:
Suspended License TAC No.:
48045 i
Responsible Branch:
LB #3 Project Manager:
H. Schierling Review Branch:
ICSB Review Status:
Complete By memorandum dated September 15, 1983, input for Supplement 19 of the Diablo Canyon SER was provided to close out one of the two remaining open items iden-tified in Section 4.2.3.1 of Suppelement 18.
In accordance with the project manager's request of October 7,1983, this input has been revised to reflect the format to be used for Supplement 19 and is enclosed.
By letter dated October 6,1983, "G&E provided a response to the other remaining open item identified in Section 4.2.3.1 of Supplement 18. The enclosed input for Supplement 19 also provides an evaluation of this item.
Based on our review we have found that the licensee has provided an acceptable response to these open items and these matters are now closed by the enclosed SER Supplement 19 input.
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y R. Wayne Houston, Assistant Director for Reactor Safety Division of Systems Integration
Enclosure:
As stated cc:
R. J. Mattson G. Knighton H. Schierling
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J. Wermiel
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Contact:
T. Dunning, ICSB X29457
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i DIABLO CANYON UNIT 1 & 2 SUPPLEMENT SAFETY EVALUATION REPORT
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4.2.3.
Instrumentation and Control Design 4.2.3.1 Auxiliary Feedwater System Classification of Valves FCV-37 and -38:
In Supplement 18 of the SER, the staff evaluated the IDVP review of the Auxiliary Feedwater (AFW) Systen as addressed by Interim Technical Report 27, Rev. 1.
As not ed, the staf f requi res that the valve operators and control circuits for the isolation valves ( F C V-3 7 & -3 8 ),
which provide the steam supply to the turbine-driven AFW pump, to be classified by PG8E as safety related.
This is consistent with the Diablo Canyon FSAR c om mi tme nt to GDC 57 fo r these valves.
The classification of these valves we re the subj ect of the IDVP E0I File 8018.
By letter dated August 10, 19 83, t he li censee noted t hat the subject valves were procured and installed as Class 1E conponents and the valve operators have been reclassi-fied as Instrument Class 1 A (s a f e ty related).
This change in the i ns t ru me nt classification for the valve ope rato rs involves revising appropriate documentation and qualifi-cation files to reflect this change and confi rming t hat the related reviews are not affected.
Further, by letter dated October 6, 1983, the Licensee noted that the control ci r cui ts f or the valves are now classified a s safety related.
Based on this action, the staf f considers this matter closed.
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. Single Relay Used to Terminate Steam Generator Blowdown:
In Supplement 18 of the.SER, the staff evaluated the IDVP review of the use of a single non safety related relay used to terminate steam generator blowdown on starting of of an AFW pump.
The IDVP had identified this aspect of
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the design as a potential concern with regard to the cap-ability of the AFW system to satisfy the minimum design flow requi rement s for event s which may not result in a safety injection signal.
This concern was identified in E0I File 8047 and was addressed in ITR 27.
The staff had concurred with the conslusions of the IDVP that the AFW system satisfied the minimum design flow requirement without reliance on termination of steam gene'rator blow-down.
However, the use of a single non-safety grade
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relay was not consistent with the design described on FSAR Figure 7.1-2, Sheet 15.
The staff noted that this was a matter it would pursue with the Licensee.
By Le tt er da ted Sep tembe r 9, a nd O ct obe r 6,1983, t he Licensee has committed to install a redundant relay as shown on Sheet 15 of FSAR Figure 7.2-1 and to classify the ci rcuits used to t erminate steam generator blowdown on start of an AFW pump as safety related.
These actions i
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, are to be completed prior to f ulL power operation.
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addition, in'the review of this matter the staf f had iden-tified other areas of the FSAR in which inconsistencies existed.
By letter dated October 6, 1983, the Licensee provided a commitment to correct the i dentified inconsis-tencies in the FSAR in the next FSAR update.
The staff finds that the Licensee's commitments to modify and re-classify as safety related the steam generator blowdown ci r cui t s, as noted above, resolve the conf li ct of the existing design with the design shown on FSAR Figure 7.2-1, sheet 15.
Further, the licensee's commitment to complete these modifications. prior to full power operation e
is acceptable since they do not involve protection which i s e s s e n't i a l t o p la nt saf ety nor wou Ld' t hey have any safety significance during low power testing.
- Finally, the Licensee's commitment to correct the di sc repenci es in the FSAR descriptive material identified during t his r evi ew is acceptable since in no inst,nce were any prob-Lems found that were contrary to any Licensing c ri t e ri a or requirements.
Therefore, based on these actions, the staf f conside rs this matter closed.
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- **%g UNITED STATES
[I o,j NUCLEAR REGULATORY COMMIS' ION S
c-y WASHINGTON, D. C. 20553
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0072 1 1983 Docket No.:
50-275 MEMORANDUM _FOR:
George W. Knighton, Chief Licensing B'anch No. 3 Division of Licensing FROM:
Hans Schierling, Project Manager Licensing Branch No. 3 Division of Licensing
SUBJECT:
MEETING NOTICE - DIABLO CANYON UNIT 1 IN REGARD TO ALLEGATIONS DELINEATED IN BOARD NOTIFICATION 161 AND 83-48 DATE & TIME:
October 25, 1983 9:00 am - 5:00 pm - Room C October 26, 1983 9:00 am 5:00 pm - Room F LOCATION:
Bechtel Offices 50 Beale Street San Francisco, California PURPOSE:
To conduct an audit of material related to allegations on design adequacy of certain structures, systems and components.
PARTICIPANTS:
NRC J. P. Knight, P. T. Kuo, M. Hartzman, P. Morrill, A. J. Philippacopoulos (BNL), P. Bezler (BNL)
PG&E G. Maneatis,.H. Friend, J. Hoch, et al.
Wans Schierling, Pro $det Manager Licensing Branch No. 3, DL cc: See next page
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Diablo Canyon j
Mr. J. O. Schuyler, Vice President Nuclear Power Generat' ion-c/o Nuclear Power Generation, Licensing Pacific Gas and Electric Company 77 Beale Street, Room 1435 San Francisco, California 94106 Philip A. Crane, Jr., Esq.
Resident Inspector /Diablo Canyon NPS Pacific Gas & Electric Compan.v c/o US Nuclear Regulatory Commission Post Office Box 7442 P. O. Box 369 San Francisco, California 94120 Avila Beach, California 93424 Mr. Malcolm:H. Furbush Ms. Raye Fleming Vice President - General Counsel 1920 Mattie Road Pacific Gas & Electric Company Shell Beach, California 93440 Post Office Box 7442 San Francisco, California 94120 Joel Reynolds, Esq.
John R. Phillips, Esq.
Janice E. Kerr, Esq.
Center for Law in the Public Interest California Public Utilities Commission 10951 West Pico Boulevard 350 McAllister Street Third Floor San Francisco, California 94102 Los Angeles, California 90064 Mr. Frederick Eissler, President "
Paul C. Valentine, Esq.
Scenic Shoreline Preservation 321 Lytton Avenue Conference, Inc.
Palo Alto, California 94302 4623 More Mesa Drive Santa Barbara, California 93105 Dr. William E. Cooper Project Manager - 5511 Ms. Elizabeth Apfelberg Teledyne Engineering Services 1415 Cozadero 130 Second Avenue
- San Luis Obispo, CA 93401 Waltham,, Massachusetts 02254 Mr. Gordon A. Silver Mr. Dick Blankenburg Ms. Sandra A. Silver Editor & Co-Publisher 1760 Alisal Street South County Publishing Company San Luis Obispo, CA 93401 P. O. Box 460 Arroyo Grande, California 93420 Harry M. Willis, Esq.
Seymour & Willis Norton, Burke. Berry & French, P.C.
601 California Street, Suite 2l00 2002 E. Osborn Road San Francisco, CA 94108 P. O. Box 10569 Phoenix, Arizona 85064 Mr. Richard Hubbard MHB Technical Associates Mr. W. C. Gangloff Suite K Westinghouse Electric Corporation 1725 Hamilton Avenue P. O. Box 355 San Jose, CA 96125 Pittsburg, Pennsylvania 15230 Mr. John Marrs, Managing Editor David F. Fleischaker, Esq.
San Luis Obispo County Telegram Tribune P. O. Box 1178 1321. Johnson Avenue Oklahoma City, Oklahoma 73101 P. O. Box 112 San Luis Obispo, CA 93406 i
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Diablo. Canyon 8
Arthur C. Gehr, Esq.
Snell & Wilmer 3100 Valley Center Phoenix, Arizona 85073,
Mr. Lee M. Gustafson, Director Federal Acency Relations Pacific Gas & Electric Company 1050 17th Street, N. W.
. Suite 1180 Washington, D. C.
20036
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Regional Administrator - Region Y US Nuclear Regulatory Commission 1450 Maria Lane Suite 210 Walnut Creek, California 94596 Dr. Jose Roesset 3506 Duval Road Austin, Texas 78759 Michael J. Strumwasser, Esq.
Special Council to the Attorney General State of California 3580 Wilshire Boulevard, Suite 800 Los Angeles 90010 Mr. Thomas H. Harris San Jose Mercury News 750 Ridder Park-Orive-San Jose, California 95190 Mr. Mark Gottlieb California Energy Commission 1111 Howe Avenue, MS 27 Sacramento, California 9c825 Maurice Axelrad, Esq.
Lowenstein, Newman, Reis and Axelrad 1025 Connecticut Avenue, '4W Washington, D. C.
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