ML17303A240

Forwards Rev 0 to Study 03-NS-110, 10CFR50,App R Safe Shutdown Evaluation.Outside Control Room Fire Spurious Actuation Study For..., in Response to App R Audit Open Item 50-530/85-08-01

ML17303A240
Person / Time
Site:	Palo Verde
Issue date:	01/22/1987
From:	Haynes J ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	Knighton G Office of Nuclear Reactor Regulation
Shared Package
ML17303A241	List: ML17303A240 ML17303A242
References
ANPP-39788-JGH, TAC-64514, NUDOCS 8701280165
Download: ML17303A240 (6)

Text

REQUL'ATQR. NFORNATION DISTR IBUTIQN S EN (R IDS)

ACCESSIQN NBR: 8701280165 DQC. DATE: 87/01/27 NOTARIZED: NO DOCKET FACIL: STN-50-530 Palo Verde, Nuclear Station> Uni't 3i Arizona Pub)i 05000530 AUTH. NAME AUTHOR AFFILIATION HAYNES> J. Q. Arizona Nuclear Pouer Prospect (formerly Arizona Public Serv RECIP. NANE ,RECIPIENT AFFILIATION KNICHTON> Q. M. PMR Prospect Directorate 7

SUBJECT:

Forwards Rev 0 to Study 03-NS-110> "10CFR50i,hpp R Safe Shutdown Evaluation. Outside Control Room Fire Spurious Acutuation Study for... " in response to

~ App R audi't Open Item 50-530/85-08-01.

DISTRIBUTION CODE: .ADDED COPIES RECEIVED: LTR ENCL / SIZE: 0 +

TITLE: QR/Licensing Submittal: Fire Protection.

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Arizona Nuclear Power Project P.O. BOX 52034 ~ PHOENIX. ARIZONA85072-2034 January 22, 1987 ANPP-39788-JGH/JKR/98.05 Director of Nuclear Reactor Regulation Attention: Mr. George M. Knighton, Project Director PMR Project Directorate 87 Division of Pressurized Mater Reactor Licensing B U.S. Nuclear Regulatory Commission Mashington, D.C. 20555

Subject:

Palo Verde Nuclear Generating Station (PVNGS)

'Unit 3 Docket No. STN 50-530 Appendix R Audit Open Item (50-530/85-08-01)

File: 87-G-056-026 87-019-026

References:

1) Letter to G. M. Knighton, NRC, from E. E. Van Brunt, Jr., ANPP, dated May 22, 1985;

Subject:

Appendix R Audit Open Items 50-529/85-11-01 and 50-530/85-08-01 (ANPP-32700).

2) Letter to G. M. Knighton, NRC, from E. E. Van Brunt, Jr., ANPP, dated November 13, 1984;

Subject:

10CFR50, Appendix R, Spurious Analysis (ANPP-31101).

Dear Hr. Knighton:

In response to NRC Appendix R Audit open item 50-530/85-08-01 requesting plant differences between Unit 3 and Unit 1 (Reference 1), we advised that the results of the Unit 3 safe shutdown, spurious actuation and,cable routing differences from Unit 1 would be submitted to the staff for review prior to fuel load of Unit 3.

Enclosed is the Unit 3 Outside Control Room Fire Spurious Actuation Study for your use in reviewing the 10CFR50 Appendix R spurious actuation concerns. This evalua-tion has been performed based, on methodology discussed in Reference 2.

Please note that the Control Room Fire Spurious Actuation Study was previously completed for all three units and submitted with Reference 2.

The only significant routing difference found was the Shutdown Cooling Contain-ment Isolation Valve J-SIC-UV-653. The safe shutdown circuit going to valve J-SIC-UV-653 is routed in a cable tray which circles the charging pump rooms. This tray is located in fire zone 42C, which is predominately Train B, and is protected by a 1-hour fire wrap. In Unit 3, the same shutdown circuit is routed within a conduit through fire zone 42D with a small portion of conduit passing through fire zone 42C. That portion of the conduit which passes through fire zone 42C is pro-tected by a 1-hour fire wrap. The portion passing through 42D does not require any protection since fire zone 42D is Train A area. This change has eliminated Unit 3 protection for the cable tray located in zone 42C because the circuit was the only safe shutdown circuit pulled through the tray.

8701280165 8701Rcib PDR ADOCK 05000530 F PDR

0 C

Mr. George W. Knighton

Subject:

Appendix R Audit Open Item (50-530/85-08-01)

ANPP- 39788 Page 2 If you have any further questions, please contact Mr. W. F. Quinn of my staff.

Very truly yours, J. G. Haynes Vice President Nuclear Production JGH/JKR/rw cc: 0. M. De Michele E. E. Van Brunt, Jr.

E. A. Licitra R. P. Zimmerman A. C. Gehr

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