ML19326A120

Interim Deficiency Rept Re Facility Reactor Vessel Surveillance Capsule Holder Tube Holddown Mechanism.B&W Attempting Design Mod Completion Prior to Hot Functional Testing.Definitive Rept to Be Submitted Following Study

ML19326A120
Person / Time
Site:	Davis Besse
Issue date:	05/07/1976
From:	Roe L TOLEDO EDISON CO.
To:
Shared Package
ML19326A118	List: ML19326A120
References
NUDOCS 8001310677
Download: ML19326A120 (1)

Text

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Toteco EDISON Docket No. 50-346 7 'OWELL L E. ROE Wee President May 7,1976 -

84191 259-5242 Dr. Emst Volgenau, Director Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C. 20555

Dear Dr. Volgenau:

This letter is submitted as an Interim Report regarding Davis-Besse Nuclear Power Station Unit I reactor vessel surveillance capsule holder tube holddown mechanism as Mr. J. D.

Lenardson, Toledo Edison Quality Assurance Manager, discussed by telecon witti your Mr. D. Hayes, NRC Region ill Office of Inspection and Enforcement on April 8,1976.

The design of the subject holddown mechanism is viewed as a significant deficiency pursuant to 10 CFR 50.55(e).

The present surveillance capsule holder tubes are being removed and the reactor vendor, i The Babcock and Wilcox Company, is attempting to complete the design modifications

• in time to install the modified system in the Davis-Besse Unit I reactor vessel prior to '

, v/ Hot Functional Testing.  !

A definitive report of the deficiency, analysis of the safety implications, and the corrective action taken will be submitted to your office in accordance with 10 CFR 50.55(e) upon completion of our study of this problem.

Yours very truly, cp 2ee/3 ,

cc: .

J. G. Keppler, Regional Director .

Office of Inspection and Enforcement Region III l

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THE TOLEDO EDISON COMPANY EDISON PLAZA 300 MADISON AVENUE TOLEDO. CHIO 43552 '

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