ML041410095

E-mail Dated 04/01/04 - ANO 1, Questions on Residual Stresses

ML041410095
Person / Time
Site:	Arkansas Nuclear
Issue date:	04/01/2004
From:	Alexion T NRC/NRR/DLPM/LPD4
To:	Davant G Entergy Operations
Alexion T W, NRR/DLPM, 415-1326
References
Download: ML041410095 (3)

Text

LThomas Alexion - QUESTIONS ON RESIDUAL STRESSES Paae 1 1 From: Thomas Alexion To: DAVANT, GUY H Date: 4/1/04 12:46PM

Subject:

QUESTIONS ON RESIDUAL STRESSES Guy, See the attached.

Tom

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Subject:

QUESTIONS ON RESIDUAL STRESSES Creation Date: 4/1/04 12:46PM From: Thomas Alexion Created By: TWA@nrc.gov Recipients Action Date & Time entergy.com GDAVANT (DAVANT, GUY H)

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QUESTIONS RELATED TO RESIDUAL STRESSES RELIEF REQUEST R&R-006 ARKANSAS NUCLEAR ONE, UNIT 1

1. In the ANO Calculation 86-E-0074-156, weld residual stresses were not considered.

The revised analysis considered the weld residual stresses. Discuss the technical basis for including the residual stresses in the revised analysis and excluding the residual stresses in the previous analysis.

2. Clarify whether the J-groove weld and butter weld were heat treated to relieve residual stresses during ANO-1 reactor vessel head fabrication.

3. How many plants has Framatome performed the same J-groove weld calculations, as performed for the ANO-1 plant?