ML17325A395
| ML17325A395 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 10/28/1987 |
| From: | Alexich M INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG |
| To: | Murley T NRC, NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| AEP:NRC:0838AA, AEP:NRC:838AA, GL-83-28, NUDOCS 8711030034 | |
| Download: ML17325A395 (6) | |
Text
REGULATOR NFORMATION DISTRIBUTION EM (RIDS)
A(;CESSION NBR: 87f f030034 DOC. DATE: 87/fO/28 NOTARIZED:
NO DOCKET ¹ FACIL: 50-3i5 Donald C.
Cook Nuclear Power Plant> Unit fi Indiana 5
05000315 50-3fh Donald C.
Cook Nuclear Power Plant.
Unit 2i Indiana h
050003fb AUTH. NAME AUTHOR AFFILIATION ALEXICHJ M. P.
Indiana F~ Michigan Electric Co.
RECIP. NAME RECIPIENT AFFILIATION MURLEYiT. E.
Document Control Branch (Document Control Desk)
SUBJECT:
Forwards Westinghouse 870803 cover ltr OG-87-35. Informs that Westinghouse variable timer design will be used in plant specific design.
DIBTRIBUTION CODE:
- 055D COPIEB RECEIVED: LTR Q ENCL j.
SIZE: 3 TITLE: OR/Licensing Submittal:
Salem ATWS Events GL-83-28 NOTES:
REC IP IENT ID CODE/NAME PD3-3 L*
WIGGINGTONi D INTERNAL: ARM/DAF/LFMB NRR/DEST/ESB NRR/DEST/PSB NRR/DLPG/GAB NR S/ILRB REG LE Oi EXTERNAL:
LPDR NSIC COPIES LTTR ENCL i
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REC IP IENT ID CODE/NAME PD3-3 PD NRR LASHER' NRR/DEBT/ICSB NRR/DEST/RSB NRR/DOEA/GCB OGC/HDSi RES/DE/EIB NRC PDR COPIES LTTR ENCL 3
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LTTR 20 ENCL f3
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Indiana Michigan Power Company One Summit Square P.O. Box 60 Fort Wayne, IN 46801 219 425 2111 AEP:NRC:0838AA 10 CFR 50.62 Donald C.
Cook Nuclear Plant Units l, and 2
Docket Nos.
50-315 and 50-316 License Nos.
DPR-58 and DPR-74 GENERIC LETTER 83-28, 10 CFR 50.62, AMSAC U.S. Nuclear Regulatory Commission Attn:
Document Control Desk Washington, D.C.
20555 Attn:
T.
E. Murley October 28, 1987
Dear Dr. Murley:
In Attachment 2 to our letter AEP:NRC:0838Z dated June 15,
- 1987, we provided the D.
C.
Cook Plant-specific Anticipated Transients Without Scram (ATWS) Mitigation System Actuation Circuitry (AMSAC) design.
At that time, however, we had not yet received the Westinghouse design for the variable timer used to initiate AMSAC.
Therefore,, Figure 2, page 4 simply showed the timer in place.
We have been informed that Westinghouse provided to Mr. James Lyons, Chief Technical
& Operations Support Branch,
- NRC, a proprietary and a non-proprietary version of the variable timer design.
This was transmitted by Westinghouse cover letter OG-87-35 dated August 3,
- 1987, a copy of which is attached for your convenience.
The purpose of this letter is to advise you that the Westinghouse variable timer design will be utilized in our D.
C.
Cook Nuclear Plant specific design.
We plan to use the Foxboro Spec 200 Micro Control Card, N2CCA-S, to perform the lag function on the turbine impulse chamber pressure signals from MPC253 and MPC254, to auctioneer high the two lagged signals, and to perform the timer function.
An input contact to the card will be provided from the 3/4 low feed water relay logic.
After we have received a low feed water flow signal and we have successfully completed the timing
- period, the N2CCA-S will provide an output to the initiate-relays via one of the relay output isolators.
~ (
Dr. T.
E. Murley AEP:NRC:0838AA This document has been prepared following Corporate procedures which incorporate a reasonable set of controls to ensure its accuracy and completeness prior to signature by the undersigned.
Sincerely, M. P. Alexich Vice President cm cc:
John E. Dolan W.
G. Smith, Jr.
- Bridgman R.
C. Callen G.
Bruchmann G. Charnoff NRC Resident Inspector
- Bridgman A. B. Davis
- Region III
ATTACHMENT 1 TO AEP:NRC:0838AA WESTINGHOUSE OWNERS GROUP LETTER OG-87-35