ML20112G790

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Forwards for Review, Metallurgical Exam of CRD Cables. Rept Details Exam of CRD 25 Cable Failures.Safety Evaluation Re Use of Inconel 625 Cables to Replace Existing Stainless Steel Cables Will Be Provided by 850131
ML20112G790
Person / Time
Site: Fort Saint Vrain Xcel Energy icon.png
Issue date: 12/31/1984
From: Gahm J
PUBLIC SERVICE CO. OF COLORADO
To: Johnson E, Martin R
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML20112G800 List:
References
P-84539, NUDOCS 8501160528
Download: ML20112G790 (1)


Text

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16805 WCR 19 1/2, Platteville, Colorado 80651 December 31, 1984 Fort St. Vrain Unit #1 P-84539- $$$0N$ D Mr. Robert Martin, Regional Administrator U. S. Nuclear Regulatory Commission JAN I D E 611 Ryan Plaza Drive, Suite 1000 Arlington, TX 76100 U

-.. -: m m w Attention: Mr. E. H. Johnson

SUBJECT:

METALLURGICAL EXAMINATION OF THE CRD NO. 25 CABLE FAILURE AREA

REFERENCE:

PSC LETTER, GAHM TO MARTIN, DATED 11/8/84 (P-84460)

Dear Mr. Martin:

Attached for your review is a copy of the Public Service Company of Colorado report entitled Metallurgical Examination of Control Rod Drive Cables. This report details the examination of the CRD No. 25 cable failure and is being submitted to satisfy our commitment to you as stated in the referenced letter. A majority of the information in this report was presented to members of your staff during the meetings held at Fort St. Vrain on November 28 and 29 of this year.

A safety evaluation will be submitted for NRC review regarding the use of Inconel 625 cables to replace the existing stainless steel cables by January 31, 1985.

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If you have any questions, please contact Mr. M. H. Holmes at (303) 571-8409.

Sincerely,

./

J. W. Gahm Manager, Nu:: lear Production l

Fort St. Vrain Nuclear l

Generating Station JWG/dlb-60T I

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