ML17326A598

Advises That No Event 5 Valve Configurations Exist at Facility,In Response to NRC 800223 Ltr.Lists Valve Configurations Used at Facility

ML17326A598
Person / Time
Site:	Cook
Issue date:	03/24/1980
From:	Dolan J INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	Harold Denton Office of Nuclear Reactor Regulation
References
AEP:NRC:00371, AEP:NRC:371, NUDOCS 8004010325
Download: ML17326A598 (5)

Text

REGULATE INFORMATION DISTRIBUTION o STEM (RIDS)

ACCESSION NBR:8004010325 OOC ~ DATE. 80/03/24 NOTARIZED; YES DOCKET ¹ FACI - Donald C, Cook Nuclear Power PlantE Unit 1~ Indiana 8 05000315 0 316 D nald CD Cook Nuclear Power Plants Unit 2R Indiana L 05000316 R AUTHOR AFFILIATION DOL NEJ ~ ED Indiana L Michigan Electric Co ~

REC IP ~ NAME REC IP IEIVT AFFIL I AT ION DENTONEH ~ RE Office of Nuclear Reactor Regulation

SUBJECT:

Advises that no Event 5 valve configurations exist at facility~in response to NRC 800223 ltd Lists valve configurations used at facility.

DISTRIBUTION CODE: ADO IS COPIES RECEIVED:LTR ENCL/ SIZE:

TITLE: General Distribution for after Issuance of Operating Lic NOTES: 'K

$+ ~ C.~~

REC IP IENT COPIES RECIPIENT COPIES ID COOK/NAME LTTR ENCI ..ID CODE/NAME LTTR KNCI ACTION: 05 BC ~~@ ~f 7 7 INTERNAL: 01 G F ILF 1 1 02 NRC PDR 12 2 2 15 CORE PERP BR 17 ENGR BR 1 1 18 REAC SFTY, BR 19 PLANT SYS BR 1 1 20 EKB 21 EFLT TRT SYS 1 1 EPR<<OOR OELD 1 0 STS GROUP LEAOR EXTERNAL; 03 LPDR 1' 04 NSIC 23 ACRS 16 16 WC)~ ',

2 tg80 TOTAL NUMBER OF COPIES REQUIRED: LTTR EiVCL

INDIANA L MICHIGAN ELECTRIC COMPANY P. O. BOX 18 BOWLING GREEN STATION NEW YORK, N. Y. 10004 March 24, 1980 AEP'NRC:00371 Donald C. Cook Nuclear Plant Units No. 1 and 2 Dockets No. 50-315 and 50-316 Licenses No. DPR-58 and DPR-74 Reactor Coolant System Pressure Isolation Valves Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission ~

Washington, D.C. 20555

Dear Mr. Denton:

This letter responds to Mr. Darrell G. Eisenhut's letter of February 23, 1980 on the subject of LWR primary coolant system pressure isolation valves. We have reviewed the systems that use check valves to perform a pressure isolation function within the Class 1 boundary of the high pressure piping connecting the RCS piping to low pressure piping that could potentially allow a LOCA to bypass the containment and found that neither of the valve configurations described in Mr. Eisenhut's letter exist at Cook Plant. The following are the valve configurations used at Cook Plant:

1) A minimum of three check valves in series.

2) Two check valves with'a minimum of a closed motor operated valve'n series.

3) Two check valves with a closed hand operated valve in series.

4) A check valve with two closed air operated valves in series.

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Mr. Harold R. Denton, Director AEP:NRC:00371 Therefore no Event V configurations exist at the Cook Plant.

Consequently, the requests in Items 2 and 3 of Mr . Eisenhut's letter are not applicable to the Cook Nuclear Plant.

Very truly yours, Joan. E; Dolan,,

Viz'resident cc: R. C. Callen G. Charnoff D. V. Shaller - Bridgman E. Dolan R. W. Jurgensen R. S. Hunter

STATE OF NEW YORK COUNTY OF NEW YORK John E. Dolan, being duly sworn, deposes and says that he is the Vice President of licensee Indiana & Michigan Electric Company, that he has read the foregoing response to Mr. Darrell G. Eisenhut's letter of February 23, 1980 on the subject of LWR primary coolant system pressure isolation valves and knows the contents thereof, and that said contents are true to the best of his knowledge and belief.

John E. Dolan, Vice President Subscribed and sworn to'efore me this24thday of March, 1980.

Notary Public