ML17299A855
| ML17299A855 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 11/25/1985 |
| From: | Knighton G NRC |
| To: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| References | |
| NUDOCS 8512100123 | |
| Download: ML17299A855 (7) | |
Text
Docket Nos.:
50-528, 50-529 and 50-530 Mr. E. E.
Van Brunt, Jr.
Executive Vice President Arizona Nuclear Power Project Post Office Box 52034 Phoenix, Arizona 85072-2034
Dear Mr. Van Brunt:
DISTRIBUTION 2~50:525/520/520 >
NRC,PDR LPDR J Pa'rt1 ow NSIC BGrimes PRC System EJordan LB¹3 Reading Attorney, ELD, JLee ACRS (16)
MLey CLiang I
LMarsh BSheron
Subject:
Request for Additional Information The staff is currently reviewing your recent submittals dated October 15, 22 and November 4, 1985 concerning the Auxiliary Presurizer Spray System and the Pressurizer Gas Vent System.
However, additional information is needed to complete the review.
This is described in the enclosed Request for Additional Information and was discussed with your staff in a telecon on November 20, 1985.
Your response to the enclosed request is needed as soon as possible.
Staff resolution of this issue is needed prior to low power licensing of Palo Verde Unit 2. If you have any questions concerning this request, please contact Ms. Marilyn Ley, Licensing Project Manager for Unit 2, at (301) 492-7792.
Sincerely,
Enclosure:
Request for Additional Information George W. Knighton, Chief Licensing Branch No.
3 Division of Licensing cc:
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Mr. E.
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Van Brunt, Jr.
Arizona Nuclear Power Project Pal o Ver de CC:
Arthur C. Gehr, Esq.
Snell
& Wilmer 3100 Valley Center Phoenix, Arizona 85073 Mr. James M. Flenner, Chief Counsel Arizona Corporation Commission 1200 West Washington Phoenix, Arizona 85007 Charles R. Kocher, Esq. Assistant Council James A. Boeletto, Esq.
Southern California Edison Company P. 0.
Box 800
- Rosemead, California 91770 Mr. Mark Ginsberg Energy Director Office of Economic Planning and Development 1700 West Washington - 5th Floor Phoenix, Arizona 85007 Mr. Wayne Shirley Assistant Attorney General Bataan Memorial Building Santa Fe, New Mexico 87503 Mr. Roy Zimmerman U.S. Nuclear Regulatory Commission P. 0.
Box 239 Arlington, Arizona 85322 Ms. Patricia Lee Hourihan 6413 S. 26th Street Phoenix, Arizona 85040 Regional Administrator, Region V
U. S. Nuclear Regulatory Commission 1450 Maria Lane Suite 210 Walnut Creek, California 94596 Kenneth Berlin, Esq.
Winston
& Strawn Suite 500 2550 M Street, NW Washington, DC 20037 Ms. Lynne Bernabei Government Accountability Project of the Institute for Policy Studies 1901 gue Street, NW Washington, DC 20009 Ms. Jill Morrison 522 E. Colgate Tempi, Arizona 85238 Mr. Charles B. Brinkman, Manager Washington Nuclear Operations
,'ombustion Engineering, Inc.
7910 Woodmont Avenue Suite 1310
- Bethesda, Maryland 20814 Mr. Ron Rayner P. 0.
Box 1509
- Goodyear, AZ 85338
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ENCLOSURE PALO VERDE UNITS 1, 2, AND 3 REQUEST FOR ADDITIONAL INFORMATION CONCERNING THE MATER SUPPLIES TO CHARGING PUMPS 1.
Discuss the procedures to be used for venting the charging pump suction and discharge piping following an introduction of hydrogen from the Volume Control Tank.
Address the following staff concerns related to this potential:
a.
Possible hydrogen explosion during the gas venting process; b.
Possible damage to the charging pumps; c.
Operator's safety while performing the venting process.
The Arizona Nuclear Power Project (ANPP) should propose an appropriate demonstration of the gas venting process to ensure that the procedures are viable.
2.
Provide system description and PI8Ds of the reactor gas vent system from the pressurizer.
The;information currently available in the FSAR is inconsistent with the ANPP's presentation to the ACRS during the November 5, 1985 meeting.
Confirm that the gas vent valves are safety grade solenoid operated valves and the entire gas vent system is designed to safety grade standards.
(The schematic diagram of the gas vent system in the FSAR indicated that the gas vent valves are air operated valves.)
3.
The forthcoming natural circulation cooldown test should demonstrate that the water inventory above the upper connection of the refueling water
, tank is sufficient for a plant cooldown to the cold shutdown condition.
-2" 4.
It is the staff's understanding that the charging loop isolation valves (CH-239 and CH-240) are environmentally qualified.
Provide clarification of the information presented in Attachment 2(a), sheet 3 of 4, of the ANPP letter dated October 15, 1985 (ANPP-33713) which indicated that these loop isolation valves are not environmentally qualified.