ML17334B773

Provides Present Plans for Addressing CRDM Housing Issue at Plant

ML17334B773
Person / Time
Site:	Cook
Issue date:	05/13/1998
From:	Sampson J INDIANA MICHIGAN POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
AEP:NRC:1288, NUDOCS 9805200303
Download: ML17334B773 (4)

Text

CATEGORY REGULA'l%Y INFORMATION 1~

DISTRIBUTIOWSYSTEM (RIDS)

ACCESSION NBR:9805200303 DOC.DATE: 98/05/13 NOTARIZED: NO DOCKET I FACIL:50-315 Donald C. Cook Nuclear Power Plant, Unit 1, Indiana M 05000315

',50-3;L6 Donald C. Cook Nuclear Power Plant, Unit 2, Indiana M 05000316 AUTH. NAME AUTHOR AFFILIATION SAMPSON,J.R. Indiana Michigan Power Co.

RECIP'NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk) l

SUBJECT:

Provides present plans for addressing CRDM housing issue at plant.

DISTRIBUTION CODE: A001D COPIES RECEIVED:LTR ENCL SIZE:

TITLE: OR Submittal: General Distribution NOTES:

RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR E CL PD3-3 LA PD3-3 PD 1 0

STANG,J R

INTE FILE CEN NRR/DE/ECGB/A 1 NRR DE/EMCB NRR/DRCH/HICB 1 NRR/DSSA/SPLB NRR/DSSA/SRXB 1 NUDOCS-ABSTRACT OGC/HDS3 1 EXTERNAL: NOAC NRC PDR D

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N NOTE TO ALL "RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASTE. TO HAVE YOUR NAME OR ORGANIZATION REMOVED FROM DISTRIBUTION LISTS OR REDUCE THE NUMBER OF COPIES RECEIVED BY YOU OR YOUR ORGANIZATION, CONTACT THE DOCUMENT CONTROL DESK (DCD) ON EXTENSION 415-2083 TOTAL NUMBER OF COPTES REQUTRED: LTTR 13 ENCL Q'

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Indiana Michigan Power Company

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500 Circle Drive Buchanan, Ml 491071395 IN91ANSl StlCNISAN PQWM May 13, 1998 AEP:NRC:1288 Docket Nos. 50-315 50-316 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Mail Stop 0-Pl-17 Washington, D.C. 20555-0001 Gentlemen:

Donald C. Cook Nuclear Plant Units 1 and 2 PART LENGTH CONTROL ROD DRIVE MECHANISM (CRDM) HOUSING ISSUE In a letter to Mr. Frank J. Miraglia, Deputy Director, Office of Nuclear Regulation, WOG-98-037, dated March 6, 1998, the Westinghouse Owners Group (WOG) responded to the NRC's formal request to activate the regulatory response group (RRG), and address concerns regarding the generic implications of the part

~ length CRDM housing issue identified at Prairie Island unit 2.

Letter WOG-98-037 documented the information provided by the WOG during a meeting held with the NRC on February 27, 1998. At that meeting, the WOG presented information regarding the current assessment of the CRDM housing issue and the activities planned to continue to resolve the potential generic concerns. The condition assessment report provided to the NRC emphasized that the incident is an isolated one, and that it is unlikely to occur in other housings. Furthermore, even if it were to occur and it led to severence of a part length housing, the event has already been considered as part of the plant design basis; therefore, there is no safety concern.

The affected WOG member utilities met on March 2, 1998, to review and discuss the same information presented to the NRC. The outcome of this meeting was the formation of a subgroup that will continue to support Westinghouse member utilities in responding to this issue. From the discussions at that meeting, the WOG RRG recommended that the affected utilities voluntarily consider notifying the NRC of their plans to address this issue. For plants currently in refueling or cold shutdown, it was recommended that the utilities docket their plans to address this issue within thirty days, or prior to startup.

This letter provides our present plans for addressing the CRDM housing issue at Cook Nuclear Plant.

An ultrasonic inspection of the. eight part length CRDMs will be

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performed for units 1 and 2., The inspection will=be performed, on the upper and lower pressure. housing full penetration welds using

a. qualified ultrasonic inspection procedure for flaw detection;-

9805200303 980513 PDR ADOCK 05000815 p PDR

U. S. Nuclear Regulatory Commission AEP: NRC: 1288 Page 2 The unit 1 and 2 inspections are scheduled to start in early May 1998. The inspections will be completed in both units prior to restart. Further actions will be based on inspection results.

Sincerely,

,P.p~

J. R. Sampson Vice President

/vlb c: J. A. Abramson A. B. Beach MDEQ " DW 6 RPD NRC Resident Inspector