ML19312C705

Responds to NRC Re Use of Throttle Valves to Obtain Required Flow Distribution in Hpis & Lpis.Manual or Motor Operated Valves Not Necessary in Lines W/Electrical or Mechanical Stops

ML19312C705
Person / Time
Site:	Oconee
Issue date:	08/11/1977
From:	Parker W DUKE POWER CO.
To:	Schwencer A Office of Nuclear Reactor Regulation
References
NUDOCS 7912190911
Download: ML19312C705 (2)

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Duke Power Company 8/11/77 Mr. E. G. Case Charlotte, North Carolina cATE RECEivEo William O. Parker, Jr.

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S ESCmPTICN ENCLCSURE Response to NRC's ltr. of 7/18/77 concerning j

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August 11, 1977

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• E.E*=aCN E: A# Ca 704 S *taan P*CD. C?'ON 373-4093 Mr. E. G. Case, Acting Director

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Of fice of Nuclear Reactor Regulation- ' ' 'u i U. S. Nuclear Regulatory Commission Washington, D. C.

20555 Attention:

Mr. A. Schwencer, Chief Operating Reactors Branch #1

Reference:

Oconee Nuclear Station Docket Nos. 50-269, -270, -287

Dear Sir:

In response to your letter of July 18, 1977 concerning the use of throttle valves to obtain the required flow distribution in the HPSI or LPSI systems, a review of the Oconee design was performed. The design of the Oconee Nuclear Station does not require the use of either manual or motor operated valves in these lines that have electrical or mechanical stops which must be adjusted to insure that flow requirements are satisfied.

4 Very ruly yours, q,

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=a William O. Parker, Jr.

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