ML17333A429
| ML17333A429 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 04/17/1996 |
| From: | Fitzpatrick E INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| AEP:NRC:1246, GL-96-01, GL-96-1, NUDOCS 9604220180 | |
| Download: ML17333A429 (4) | |
Text
CATEGORY 1
- REGULAT, INFORMATION DISTRIBUTION STEM (RIDS)
ACCESSION NBR:9604220180 DOC.DATE: 96/04/lj NOTARI'ZED: YES DOCKET FACIL:50-315 Donald C.
Cook Nuclear Power Plant, Unit 1, Indiana M
05000315 50-316 Donald C.
Cook Nuclear Power Plant, Unit 2, Indiana M
05000316 AUTH.NAME AUTHOR AFFILIATION FITZPATRICK,E.
(formerly Indiana
& Michigan Ele RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)
SUBJECT:
Informs NRC of plant response to GL 96-01, "Testing of Safety Related Logic Circuits."
DISTRIBUTION CODE:
R067D COPIES RECEIVED:LTR I
ENCL 0 BISE:
TITLE: GL 96-01 Response-Testing of Safety-Related Logic NOTES:
INTERNA RECIPIENT ID CODE/NAME PM/KELLY,G ILE CENTEQ~g DR~P/P D3-3 COPIES LTTR ENCL RECIPIENT ID CODE/NAME NRR/DRCH/HICB COPIES LTTR ENCL EXTERNAL: NOAC NRC PDR NOTE TO ALL "RIDS" RECIPIENTS; PLEASE HELP US TO REDUCE WASTEI CONTACT THE DOCUMENT CONTROL DESK, ROOM OWFN 5D-5 (EXT. 415-2083)
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LTTR 6
ENCL
indiana Michigan Power Company P.O. Box 16631 Columbus, OH 43216 8
April 17, 1996 AEP:NRC:1246 Docket Nos.:
50-315 50-316 U. S. Nuclear Regulatory Commission ATTN:
Document Control Desk Washington, D.
C.
20555 Gentlemen:
Donald C.
Cook Nuclear Plant Units 1 and 2
RESPONSE
TO GENERIC LETTER (GL) 96-01, TESTING OF SAFETY RELATED LOGIC CIRCUITS The purpose of this letter is to inform you of the Donald C.
Cook Nuclear Plant's response to GL 96-01.
We intend to implement the following actions which fulfillthe requested actions of GL 96-01.
We intend to compare electrical elementary drawings for the reactor protection system (RPS),
emergency diesel generator (EDG) load shedding and sequencing, and actuation logic for the engineered safety features actuation systems (ESFAS) against plant surveillance test procedures to ensure that all portions of the logic circuitry including the parallel logic, interlocks, bypasses and inhibit circuits are adequately covered in the surveillance proce'dures to fulfill the technical specification (T/S) requirements.
This review will also include relay
- contacts, control switches, and other relevant electrical components within these systems, utilized in the logic circuits performing a safety function.
To implement GL 96-01 we propose to use T/S table 3.3-1 as the basis for the RPS T/S requirements, T/S section 3/4,8.1 as the basis for the EDG load shedding and sequencing requirements, and T/S table 3.3-3 as the basis for the ESFAS requirements.
The safety related functions described in these T/Ss establish the "functional" scope of the GL 96-01 review.
The hardware scope of GL 96-01 for RPS and ESFAS consists of the initiating bi-stable contacts from the control circuitry, through the solid state protection system, to the contacts that actuate the equipment that accomplishes the required safety functions.
220024 f
9S042aoiso 9S0417~t PDR ADQCK 050003i5 P
PDQR
U. S. Nuclear Regulatory Commission Page 2
AEP'NRC:1246 The hardware scope of GL 96-01 for the EDG load shedding and sequencing requirements consists of the initiating undervoltage
- relays, the master relay that starts the EDGs, various breakers through the breaker timing and control circuitry (as determined by the initiating event),
to the contacts that actuate the equipment that accomplishes the required safety functions.
The surveillance procedures willbe reviewed against the electrical elementary drawings containing the logic circuits for safety related functions within the scope of GL 96-01, as defined above.
We intend to accomplish these actions prior to startup from the first refueling outage for each unit commencing one year after the issuance of GL 96-01; that is, the unit 1 and unit 2 refueling outages scheduled for 1997.
Sincerely, 8d~p Vice President SWORN TO AND SUBSCRIBED BEFORE ME THIS~X~ DAY OF 1996 No ry Public W"
eh CC:
A. A. Blind G. Charnoff H. J. Miller NFEM Section Chief NRC Resident Inspector
- Bridgman J.
R. Padgett
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