ML17306B072

Forwards SE Re Inservice Testing for Safety Injection Check Valves

ML17306B072
Person / Time
Site:	Palo Verde
Issue date:	10/23/1992
From:	Quay T Office of Nuclear Reactor Regulation
To:	Conway W ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
Shared Package
ML17306B074	List: ML17306B072 ML17306B076
References
TAC-M84536, TAC-M84537, TAC-M84538, NUDOCS 9210280320
Download: ML17306B072 (6)

Text

Docket Nos.

50-528, 50-and 50-530 Mr. William F.

Conway Executive Vice President, Nuclear Arizona Public Service Company Post Office Box 53999

Phoenix, Arizona 85072-3999

Dear Hr. Conway:

October 23, 92

SUBJECT:

REVISED INSERVICE TESTING FOR SAFETY INJECTION CHECK VALVES PALO VERDE NUCLEAR GENERATING STATION (TAC NOS.

M84536, H84537, AND M84538)

By letter dated September 8,

1992, you submitted two revised relief requests from the requirements of Section XI of the ASME Boiler and Pressure Vessel Code.

These are designated as revised Relief Requests Nos.

33 and 34 regarding a new method for testing the four safety injection tank discharge check valves and the four safety injection line check valves.

The NRC staff has completed its review of the proposed change in test method for exercising these valves.

We find the proposed change to be acceptable, provided that these check valves are partial-stroke exercised each cold shutdown and one valve of each type is confirmed to have opened fully by a

non-intrusive method each refueling outage on a rotating schedule.

Our Safety Evaluation is enclosed.

The NRC staff has determined that, pursuant to 10 CFR 50.55a(f)(6)(i),

granting this relief is authorized by law and will not endanger life or property or the common defense and security and is otherwise in the public interest giving due consideration to the burden upon the licensee that could result if the requirements were imposed on the facility.

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Enclosure:

Safety Evaluation cc w/enclosure:

See next page Sincerely, Original signed by Theodore R.

Quay, Director Project Directorate V

Division of Reactor Projects III/IV/V Office of Nuclear Reactor Regulation DISTRIBUTION:

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UNITED STATES NUCLEAR REGULATORY COMIVIISSION WASHINGTON. D.C. 20555 October 23, 1992 Docket Nos. 50-528, 50-529 and 50-530 Mr. William F.

Conway Executive Vice President, Nuclear Arizona Public Service Company Post Office Box 53999 Phoenix, Arizona 85072-3999

SUBJECT:

REVISED INSERVICE TESTING FOR SAFETY INJECTION CHECK VALVES PALO VERDE NUCLEAR GENERATING STATION (TAC NOS. M84536,

M84537, AND M84538)

By letter dated September 8,

1992, you submitted two revised relief requests from the requirements of Section XI of the ASME Boiler and Pressure Vessel Code.

These are designated as revised Relief Requests Nos.

33 and 34 regarding a new method for testing the four safety injection tank discharge check valves and the four safety injection line check valves.

The NRC staff has completed its review of the proposed change in test method for exercising these valves.

We"find the proposed change to be acceptable, provided that these check valves are partial-stroke exercised each cold shutdown and one valve of each type is confirmed to have opened fully by a non-intrusive method each refueling outage on a rotating schedule.

Our Safety Evaluation is enclosed.

The NRC staff has determined that, pursuant to 10 CFR 50.55a(f)(6)(i),

granting this relief is authorized by law and will not endanger life or property or the common defense and security and is otherwise in the public interest giving due consideration to the burden upon the licensee that could result if the requirements were imposed on the facility.

Sincerely,

Enclosure:

Safety Evaluation cc w/enclosure:

See next page Theodore R. quay, Director Project Directorate V

Division of Reactor Projects III/IV/V Office of Nuclear Reactor Regulation

I f

Mr. William F.

Conway Arizona Public Service Company Palo Verde CC:

Nancy C.

Loftin, Esq.

Corporate Secretary 8 Counsel Arizona Public Service Company P. 0.

Box 53999, Mail Station 9068

Phoenix, Arizona 85072-3999 James A. Beoletto, Esq.

Southern California Edison Company P. 0.

Box 800

Rosemead, California 91770 Senior Resident Inspector U.S. Nuclear Regulatory Commission HC-03 Box 293-NR Buckeye, Arizona 85326 Regional Administrator, Region V

U. S. Nuclear Regulatory Commission 1450 Maria Lane Suite 210 Walnut Creek, California 94596 Mr. Charles B. Brinkman, Manager Washington Nuclear Operations ABB Combustion Engineering Nuclear Power 12300 Twinbrook Parkway, Suite 330 Rockville, Maryland 20852 Mr. William A. Wright, Acting Director Arizona Radiation Regulatory Agency 4814 South 40 Street

Phoenix, Arizona 85040 Chairman Maricopa County Board of Supervisors 111 South Third Avenue

Phoenix, Arizona 85003 Jack R.

Newman, Esq.

Newman 8 Holtzinger, P.C.

1615 L Street, N.W., Suite 1000 Washington, D.C.

20036 Curtis Hoskins Executive Vice President and Chief Operating Officer Palo Verde Services 2025 N. 3rd Street, Suite 220

Phoenix, Arizona 85004 Roy P.

Lessey, Jr.,

Esq.

Bradley W. Jones, Esq.

Arkin, Gump, Strauss, Hauer and Feld El Paso Electric Company 1333 New Hampshire Ave., Suite 400 Washington, D.C.

20036