ML19263C326

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Responds to 790124 Telephone Request & Submits Info on Fluence Level Received by Lower Shell Weld Reactor Vessel After One Full Power Year
ML19263C326
Person / Time
Site: Sequoyah  Tennessee Valley Authority icon.png
Issue date: 02/14/1979
From: Gilleland J
TENNESSEE VALLEY AUTHORITY
To: Varga S
Office of Nuclear Reactor Regulation
References
NUDOCS 7902210256
Download: ML19263C326 (1)


Text

TENNESSEE VAL 8 7.Y AUTHORITY CHATTANOOGA. TENNESSEE 37401 500C Chestnut Street Tower II FEB 141979 Director of Nuclear Reactor Regulation Attention:

Mr. S. A. Varga, Chief Light Water Reactors Branch No. 4 Division of Project Management U.S. Nuclear Regulatory Commission Washington, DC 20555

Dear Mr. Varga:

In the hbtter of the Application of

)

Docket Nos. 50-327 Tennessee Valley Authority

)

50-328 The Materials Engineering Branch reviewer, during a telephone conversation with TVA on January 24, 1979, requested information concerning the fluence level received by the lower shell weld of the reactor vessel after one effective full power year. Westing'aouse has conservatively recalculated the fluence for the Sequoyah Nuclear Plant (gNP) unit 1lowershellweld 17 at the intetaal surface to be 6.8 x 10 n/cm (E>lMeV) after one effective full power year.

This value is lower than the value originally pro-vided for the SNP Final Safety Analysis Report (FSAR), figure 5.2-l!.

The FSAR will be revised to show the current specific fluence predie-tion for the unit 1 and unit 2 cores in Amendment 60.

Very truly yours,

[

h n.

J.

E. Gilleland Assistant Manager of Power

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