ML17333A917
| ML17333A917 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 06/10/1997 |
| From: | Fitzpatrick E INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| AEP:NRC:1249C, IEB-96-001, IEB-96-1, NUDOCS 9706170264 | |
| Download: ML17333A917 (5) | |
Text
CATEGORY j.
REGULATO INFORMATION DISTRIBUTION TEM (RIDS)
ACCESSION NBR:9706170264 DOC.DATE: 97/06/10 NOTARIZED:
NO DOCKET
,FACIL:50-315 Donald C.
Cook Nuclear Power Plant, Unit 1, Indiana M
05000315
'90-.)16 Donald C.
Cook Nuclear Pokier Plant, Unit 2, Indiana M
05000316
~ 'AUTH;NAME AUTHOR AFFILIATION FITZPATRICK,E.
Indiana Michigan Power Co. (formerly Indiana
& Michigan Ele RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)
SUBJECT:
Requests extension of comment period 'expiration date from 970619 to'70719.
DISTRIBUTION CODE:
IE57D COPIES RECEIVED:LTR ENCL SIZE:
TITLE: NRC Bulletin-96-01 Control Rod Insertion Problems NOTES:
RECIPIENT ID CODE/NAME NRR/DRPW/PD4-2 HICKMAN,J INTERNAL: AEOD NRR/DRPM/PECB NRR/THOMAS,K EXTERNAL: NOAC COPIES LTTR ENCL RECIPIENT ID CODE/NAME PD3-3 PD IL'E, R
FOSSA R
RES NRC PDR COPIES LTTR ENCL NOTE TO ALL "RIDS" RECIPIENTS:
PLEASE HELP US TO REDUCE WASTE CONTACT THE DOCUMENT CONTROL DESKS ROOM OWFN 5D-5(EXT. 415-2083)
TO ELIMINATE YOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!
TOTAL'NUMBER OF COPIES REQUIRED:
LTTR 11 ENCL
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Indiana Iyiichlgan ~
Power Company 500 Circle Drive Buchanan, Ml 491071395 INDIANA MICHIGAN PQSFM June 10, 1997 Docket Nos.:
50-315 50-316 AEP:NRC:1249C U. S. Nuclear Regulatory Commission Attn:
Document Control Desk Washington, D.C.
20S55 Gentlemen:
DONALD C.
COOK NUCLEAR PLANT UNITS 1 AND 2 LICENSE NOS.
DPR-58 AND DPR-74 PROPOSED NRC BULLETIN 96-01 SUPPLEMENT 1
NOTICE OF OPPORTUNITY FOR PUBLIC COMMENT REQUEST FOR EXTENSION OF COMMENT PERIOD This letter requests an extension of the comment period expiration date from June 19,
- 1997, to July 19, 1997.
Given the limited notice of the changes in the NRC's proposed supplement, an extension is necessary to provide an opportunity to evaluate and develop a
response commensurate with the overall impact of the proposed supplement.
Proposed NRC bulletin 96-01, supplement 1,
contains dramatic differences from what was previously identified in NRC presentations and discussions.
Specifically, the proposed burnup limits for 12 ft.
cores with T,<610'F have changed from 45,000MWD/MTU to 35,000MWD/MTU for fuel assemblies without intermediate flow mixing grids (IFMs),
and from 50,000MWD/MTU to 40,000MWD/MTU for fuel assemblies with IFMs.
Based upon the expectation that the burnup limits as previously identified in NRC presentations and discussions would be imposed, core designs and fuel procurement strategies for unit 1 cycle 16 and unit 2 cycle 12 have been developed to meet "'the higher burnup limits expected for units that operate with T,<610'F.
In addition, preliminary analyses have been performed to show sufficient shutdown margin exists at end-of-cycle for unit 2 cycle 11.
These analyses have been performed with both the single control rod located above an assembly with a burnup in excess of 50,000MWD/MTU and the most reactive rod at that condition fully withdrawn.
Based on the differences identified
- above, we will require additional time to fully assess the impact of these more restrictive limits.
An extension of the comment period expiration date will permit sufficient time to assess the technical and economic impact of the proposed NRC bulletin 96-01, supplement 1.
Sincerely, E.
E. Fit patrick Vice President vlb V'7OS<7OZSe v7o6ao PDR
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U. S. Nuclear Regulatory Commission Page 2
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DW & RPD NRC Resident Inspector J.
R. Padgett