ML20129H950

Forwards Request for Addl Info on 840719 Submittal Re Purge/Vent Isolation Valve Leak Test Schedule.Response Requested within 45 Days of Ltr Receipt

ML20129H950
Person / Time
Site:	Cooper
Issue date:	07/11/1985
From:	Vassallo D Office of Nuclear Reactor Regulation
To:	Pilant J NEBRASKA PUBLIC POWER DISTRICT
References
NUDOCS 8507220081
Download: ML20129H950 (3)

Text

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __________________ _________ _____________________

o .

July 11, 1985 Docket No. 50-298 DISTRIBUTION

Docket File.

NRC PDR Local PDR ORB #2 Reading Mr. J. M. Pilant, Technical HThempson Staff Manager OELD Nuclear Power Group SNorris Nebraska Public Power District ESylvester Post Office Box 499 ELJordan Columbus, Nebraska 68601 JPartlow BGrimes

Dear Mr. Pflant:

ACRS (10)

Gray File

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION - PKapo PURGE / VENT ISOLATION VALVE LEAK TEST SCHEDULE Re: Cooper Nuclear Station We have reviewed your submittal dated July 19, 1984 relative to frequency of purge / vent isolation valve leak testing. An enclosure to your letter provided laboratory data on the valve seal material used at Cooper to justify continued leak testing on a once-per-cycle (one year) schedule. We l find that the laboratory data does not conclusively demonstrate that the seals need not be tested on a three-month schedule. Therefore, to permit completion of our review, we find that additional information is required.

Our Request for Additional Information (RAI) is enclosed. Please respond l to the RAI within 45 days of receipt of this letter.

l l The reporting and/or recordkeeping requirements of this letter affect fewer l than ten respondents; therefore, OMB clearance is not required under P.L.96-511.

1 Sincerely, i Original signed by/

Domenic B. Vassallo, Chief Operating Reactors Branch #2 Division of Licensing

Enclosure:

As stated cc w/ enclosure:

See next page DL: RB#2 DL:0RB#2 ORB #2 SN 1 :ajs ESylvester DVassallo 07/ll/85 07/n /85 07/p /85 8507220081 850711 PDR ADOCK 05000298 P PDR.

Mr. J. M. Pilant Cooper Nuclear Station Nebraska Public Power District ,

cc:

Mr. G. D'. Watson, General Counsel.

Nebraska Public Power District Post Office Box 499 Columbus, Nebraska 68601 Mr. Arthur C. Gehr, Attorney Snell & Wilmer 3100 Valley Center Phoenix, Arizona 85073 Cooper Nuclear Station '

ATTN: Mr. Paul Thomason, Division Manager of Nuclear Operations Post Office Box 98 Brownville, Nebraska 68321 o

Director Nebraska Dept. of Environmental Control Post Office Box 94877 State House Station Lincoln, Nebraska 68509 Mr. William Siebert, Commissioner

~

Nemaha County Board of Commissioners .

-~

Nemaha County Courthouse Auburn, Nebraska 68305 .

Mr. Dennis DuBois U. S. Nuclear Regulatory Commission Resident Inspector l - Post Office Box 218 Brownville, Nebraska 68321 Robert D. Martin l Regional Administrator Region IV Office U. S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76011 H. Ellis Simmons, Director Division of Radiological Health Department of Health 301 Centennial Mall, South Post Office Box 95007 Lincoln, Nebraska 68509

ENCLOSURE REQUEST FOR ADDITIONAL INFORMATION PURGE-VENT VALVE SEAL TEST SCHEDULE COOPER NUCLEAR STATION Docket No. 50-298

1. Describe the type of valve seal testing now being done. Include in your response the testing pressures used and your acceptance criteria.

2. Provide the leak rate data collected to date for the Nordel valve seals.

Indicate which leak rate data were collected after the valves were reworked. Also include the age of the seals for each leak rate.

, 3. Indicate the most severe environmental conditions the valves have seen and the most severe environmental conditions the valves may be expected to see. Note: You should indicate both the high and low temperature

. , _ extremes the valves may see.

I

_ _ _ _ _ _ . . _ _-