ML18219D111
| ML18219D111 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 03/08/1978 |
| From: | Tillinghast J Indiana Michigan Power Co, (Formerly Indiana & Michigan Power Co) |
| To: | Case E Office of Nuclear Reactor Regulation |
| References | |
| Download: ML18219D111 (4) | |
Text
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=. Mri Edson Q~ Case FROM:
& Michigan Power Co New York, NY 10004-INPUT NORM Or<<TK OP OCCVMRECT 03/08/78 cATK:Hccalv p 0'3/14/78 NUMSCR OI< C PIKS RFMIVKD
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Response
to NRC's ltr.dtd 01/25/78
~ ~ oFuxni shing info concern ng Applicant."s int
'o proceed with an evaluation of the overall I asynunetric loads due to. a loss of coolant acc I as described in 01/25/78 ltr.~.Notorized 03/
ntions dent 8/ 78 ~ ~ ~
2p DONALD C COOK UNITS 1 &. 2
..jcm 03/08/78 I
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FOR A ON/INFOR<<AATION IQ=Q7'NTcRNAIOI~<IHUTIQN r T-T<l I.YM<ZOc ~
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P. O. BOX 18 BO WLI H G 'G R E EH STAT IOH HEW YORK, H. Y. 10004 CP March. 8 1978
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Donald C. Cook Nuclear Plant Units 1
& 2 Docket Nos.
50-315 6 50-316 DPR Nos.
58
& 74 Mr. Edson G. Case, Acting Director Office of Nuclear Reactor Regulation U. S.. Nuclear Regulatory Commission Nashington, D.C.
20555
Dear 'Mr. Case:
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Stmmr INDiANA L MICHIGAN OWER <ONPAN This letter is in response to Mr. Victor Stello's letter to all PNR licensees dated January 25, 1978 which requested that we indicate our intent to proceed with an evaluation of the overall asymmetric loads due to a loss of coolant accident as de-scribed in that letter and the attachments thereto.
You also re-quested that within 90 days we submit our detailed schedule for providing the required evaluation.
This letter is to notify you that a task group of utilities with Westinghouse NSSS plants has been formed, of which indiana Michigan Power Company is a participant, to examine the complexity of primary system main coolant piping system breaks as outlined in-Mr. Stello's January 25 letter and to identify similarities be-tween Westinghouse plants f'r the purpose of determining a con-sistent-evaluation of this. issue.
The task group has met with Westinghouse and with the NRC during the past several months to develop a program that is acceptable to both parties.
Preliminary work, in progress, will allow the task group to outline a realistic program within the 90 days you requested.
The exact content of this program is not known at this time, but its purpose will be to reassess the original plant design and assure the safety of the plants should a pipe break occur at, specified lo-cations in the reactor coolant system.
The particular resolution of this issue will vary from plant to plant, but as a minimum it will include an analytical evaluation that, assesses the safety of the plant.
.The, information generated's part of this task, group will also
'"'fulf'ill'the 'rectuirements of Ztem C,3. (af of the DonalcL C. Cook Nuclear Plant Unit 2 operating license DPR-74, Very truly yours, JT:em ice President
""'"84'or'h "CM"'s'dbsrc'rz!bed"'t'o" 'be'fore me on this.
8+ day of March, 1978 in New York County, New York Notary Public FAYEELFKN BA'KS NOTARY t'U8uC, Steato of 'Ae'w Yort, iso. 41-Vil6792 Qoeiifiw.'<<g;aors Covnty C+rtif<ro:o t:t:-'o Y"rs York County av'e 7)'c:
R.
C. Callen G." Charnoff P.
W. Steketee.
R. J. Vollen R. Walsh R.
W. Jurgensen C. V. Shaller -Bridgman
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