ML19331C840

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Responds to NRC Questions Re Methodology Used in Util Responding to NUREG-0588.Environ Conditions & Profiles Used in Review of Equipment Qualification Levels Were Determined by Techniques Exceeding NUREG Requirements
ML19331C840
Person / Time
Site: Sequoyah  
Issue date: 08/12/1980
From: Mills L
TENNESSEE VALLEY AUTHORITY
To: Schwencer A
Office of Nuclear Reactor Regulation
References
RTR-NUREG-0588, RTR-NUREG-588 NUDOCS 8008190614
Download: ML19331C840 (1)


Text

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400 Chestnut Street Tower II August 12, 1980 Director of Nuclear Reactor Regulation Attention:

Mr. A. Schwencer, Chief Light ' dater Reactors Branch No. 2 Division of Licensing U.S. Nuclear Regulatory Commission

'4ashington, DC 20555

Dear Mr. Schwencer:

In the Matter of the Application of

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Docket Nos. 50-327 Tennessee Valley Authority

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50-328 l

Reference:

Letter from L. M. Mills to A. Schwencer dated June 26, 1980 In the referenced letter, TVA provided a response for Sequoyah Nuclear Plant to NUREG-0588, " Interim Staff Position on Environmental Qualifi-cation of Safety-Related Electrical Equipment," for safety-related electrical equipment that could be exposed to a harsh environment during an accident. During an NRC review of the NUREG-0588 response at the Knoxville TVA office, F. Ashe of the Equipment Qualification Branch asked if the methodology used to calculate the environmental conditions and profiles was more or less conservative than the methodology outlined in NUREG-0588. In response to his question, TVA is providing the following statement.

The environmental conditions and profiles for radiation, pressure, temperature, etc., used in the review of equipment qualification levels for the Sequoyah Nuclear Plant were determined using analytical techniques and assumptions that encompass current NRC guidelines.

l This methodology meets or exceeds the requirements specified in NUREG-0588.

If you have any further questiens, please get in touch with D. L. Lambert at FTS 857-2581.

i Very truly yours, l

TENNESSEE VALLEY AUTHORITY L M MLLL y og, L. M. Mills, Manager Nuclear Regulation and Safety

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