ML17331A753

Forwards Addl Info on Hydrogen Mitigation & Control, Including Containment Internal Pressure Capacity,Dc Cook Nuclear Generating Station,Phase II - Probabilistic Evaluation. Eight Aperture Cards Are Available in PDR

ML17331A753
Person / Time
Site:	Cook
Issue date:	07/02/1981
From:	Hunter R INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	Harold Denton Office of Nuclear Reactor Regulation
Shared Package
ML17319A950	List: ML17319A949 ML17319A951 ML17319A952 ML17319A953 ML17319A954 ML17319A955 ML17319A956 ML17331A753 ML17331A754 ML17331A764
References
AEP:NRC:00500E, AEP:NRC:500E, NUDOCS 8107080243
Download: ML17331A753 (7)

Text

Ab)ERICAN ELECTRIC PO% SERVICE CORPORATION DATE MEMO YO:

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ACCESSION'BR:8107080243>> DOC ~ DATE! 81/07/02 NOTARIZED:" NO DOCKET-'

FACIL::50<<.315 Donal d C; Cook Nucl ear Powe'r>> P)ant~ Unit 1~ Indiana 50-316 Donald C'. Cook Nuclear Power>> Plant~ Unit 2'~ Indiana L 0 AUTH', NAME~ 'UTHOR AFF ILIATION HUNTER.g R'+ S ~ Indiana L Michigan E~lectric Co.,

RECIP'eiVAMEl REC'IPIENT AFFILIATION DENTONgH',RE Office>> of Nuclear Reactor~ Regulationg Dir ector>>

SUBJECT;: Forwards addi info. on hydrogen mitigation 8 controls including "Containment Inte'mal Pressure'apacity~DC Cook Nuclear Generation, Stat'ion~phase II - Probabilistic 05000316'EGULAT Evaluation;"

DISTRIBUTION CODE':, A001S 'COPIES RECEI VED: L> af ter~ Issuance! of Oper~ting, License NOTES: ILE:3>> copies all materials 05000315 Send 3 copies of a) l material'o ILE'. E PIENT'D COPIES RECIPIENT 'D COPIES CODE/NAMEi LTTR ENCL>> LTTR~ ENCL>> AC.T'I.O:: ORS.. ¹1. BC" OQ 13>> 13 CODE.'/NAME'IRgDIV INTERNAL:: D/DIRgHUM FAC08 1 1 OF, LIC 1 IaE~ 2 2 NRC'DR>> 02' 1 1' 11 06'Ef.D

1. 0 BR 10 0 RAD ASMT BR 1 I 01=- 1 1 EXTERNAL" ACRS" 09. 16 16 LPDR 03 1 1.

'SiC 05>> 1 1 NTIS 1 . 1-L/L/ TOTAL NUMBER>> OF" COPIES REQUIRED LiTTR <<ENCL> 3 II'K 1 0 4 ) f o< ~ 5 ~ R l 1I l t INDIANA L MICHIGAN ELECTRIC COMPANY P O. BOX 18 BOWLING GR E EN STATION NEW YORK, N. Y 10004 ~ July 2, 1981 AEP:NRC:00500E yX-gp! I I e~ Donald C. Cook Nuclear Plant Unit Nos. 1 and 2 Docket Nos. 50-315 and 50-316 License Nos. DPR-58 and DPR-74 Hydrogen Mitigation and Control Studies Ago Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C. 20555

Dear Mr. Denton:

This letter and its attachments provide additional information on Hydrogen Mitigation and Control for the Donald C. Cook Nuclear Plant.

The information submitted herein supplements our previous transmittals on this topic and fulfills the commitments made in our AEP:NRC:0500C letter dated May 29, 1981.

Attachment No. 1 contains supplementary information on the Distributed Ignition System (DIS), instrument room isolation, and Containment Air Recirculation/Hydrogen Skimmer System fan survivability. Attachment No. 2 contains the preliminary results of a Cook Plant analysis performed with the modified CLASIX computer code. Attachment No. 3 contains a report on the probabilistic analysis of the calculated limiting pressure capacity of the Cook Plant containment. Attachment No. 4 contains modified pages for the DIS Technical Specifications previously submitted. These changes have been reviewed by the PSNRC and'.will be reviewed by AEPSC's NSDRC at their next meeting. As requested during a telephone conversation with members of your staff, drawings of the crane wall are attached to Mr. S. Miner's copy of this transmittal as Attachment 5.

The Unit DIS will be operational by September 1, 1981. i 1

)0S Very truly yours, (Jr

. Hunter Vice President Attachments (cc: attached) 8107080>43 PDR Aogc K 8 702 p 05000315 PDR

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Hr. Harold R. Denton AEP:NRC:00500E cc: 'ohn E. Dolan R. Pl. Jurgensen G. Charnoff R. C. Cal 1 en D. V. Shaller Bridgman Region III Resident Inspector - Bridgman

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