ML19322B566

Responds to AEC Dec 1973 Request for Info Re Electromagnetic Relief Valves.Forwards Repts 1143 & 1158

ML19322B566
Person / Time
Site:	Oconee
Issue date:	01/22/1974
From:	Thies A DUKE POWER CO.
To:	Moseley N NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19322B568	List: ML19322B566 ML19322B571 ML19322B574
References
NUDOCS 7912040595
Download: ML19322B566 (1)

Text

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.- Duxz Powra COMPAh7 Powum Burr.coro 4me Sourm Caunca Srazer, CmAmrorTz N.C.msmo.

A c. THits P. o. Box 2 7e Stassee VsCE P*EteDese?

P#00UCTeces aseO Taasosasseseose January 22, 1974 Mr. Norrrean C. Moseley, Director Directorate of Regulatory Operations Region 11 Suite 818 230 Peachtree St., N.W.

Atlanta, Ga. 30303 Re.: Oconee Nuclear Station Docket Nos. 50-269, -270, and -287 I Electromatic Pressurizer Relief Valves i

Dear Mr. Moseley:

Please find enclosed for your review, information supplementing Reports Nos.

1143 and 1158. This information is submitted in response to questions forwarded i to us informally in December, 1973.

It was requested that we statethe code and specifications under which the electro-matic pressurizr.r relief valves were purchased. The purchase specification (B&W Specification CS-3-79, " Technical Specification for Electrically Actuated Relief Valves for Reactor Coolant System Service") is available at the Oconee site and will be made available to your inspectors for review.

With respect to the comment concerning past performance of this valve design, it should be pointed out that the statements found in Report No. 1143 were not intended as supporting evidence or Justificatic.3, for valve acceptance. instead, they werr intended to show that the valve design d:d not represent a new concept.

In fac', similar type Joints have been utilized in other types of valves and components subject to high pressure service requirements. The statements in the report were intended to provide a general background of the prior use of this type Joint design in Dresser valves and in other valves and components installed in pressurized piping systems.

The information you requested is presented in the form of replacement pages for Reports Nos.1143 and 1158, dated November 3 and 4,1973, respectively.

Yours very truly, A. &. u d e A. C. Thies bl .

ACT/Jg y1 <

Enclosures 040$pg >

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