ML051050509
| ML051050509 | |
| Person / Time | |
|---|---|
| Site: | Point Beach  |
| Issue date: | 05/13/2004 |
| From: | Chernoff H Office of Nuclear Reactor Regulation |
| To: | Raghavan L Office of Nuclear Reactor Regulation |
| References | |
| FOIA/PA-2004-0282 | |
| Download: ML051050509 (4) | |
Text
Harold Chernoff - Fwd: RE: tack weld wording in Mod Paae 1 I Harold Chernoff - Fwd: RE: tack weld wording in Mod Page-1 1
.a 15.
From:
To:
Date:
Subject:
Harold Chemoff
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Thu, May 13, 2004 3:56 PM Fwd: RE: tack weld wording in Mod
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Harold Chernoff - Fwd: RE: tack weld wording in Mod a -II Paae A I From:
To:
-Date.
Subject:
Melvin Holmberg Harold Chernoff iJ t
-Thu-May-1S-204S:55-PM Fwd: RE: tack weld wording In Mod
.- 11,
- e_
CC:
Andrea Keim; Hills, David; Louden, Patrick; McLellan, Thomas; Morris, R. Michael; Terence Chan; Timothy Steingass; William Koo
larold Chernoff --RE: tack weld wording in Mod
-Page1 From:
'Kemp, Brian' <Brian.Kemp nmcco.com>
To:
'Chapman, Rob' <Rob.Chapman~nmcco.com>, "Brown, Roy"
<Roy.Brown@nmcco.com>
Date:
Thu. May 13, 2004 12:59 PM
Subject:
RE: tack weld wording in Mod
- Rob, Mel is cc'd on this reply but we should give him a hard-copy. Roy can you get someone to run it down. I am In the NES.
Brian
> ----Original Message-----
> From:
Chapman, Rob
> Sent:
Thursday, May 13,2004 11:13 AM
> To:
Kemp, Brian; Brown, Roy
Subject:
tack weld wording in Mod
> Importance:
High
> Brian / Roy-
> Mel Holmburg was asking questions about the tack weld. I wanted to email him wording from the mod, but he is not in the email system.
> The wording is below. Could one of you print off this email and give It to him when you see him next?
> Thanksl
> Rob
> Wording from MR 03-041 DRAFT design description (mod Is not yet approved):
> Framatome Drawing 501 9702E-03 shows that the repair of some penetration nozzles may require the temporary attachment of a nozzle extension. The purpose of the nozzle extension Is to facilitate the use of the remote tooling. The need for the nozzle extension will be determined during the repair process based on field measurements taken after the nozzle and old weld are machined away. The nozzle extension will be attached to a penetration nozzle by tack welding it to the remnant J-groove weld. After nozzle repair welding and NDE are complete, the nozzle extension and temporary tack welds will be
\\removed. ASME Section III NB-4435 requires a PT examination to be performed for the removal of
,emporary tack welds (nonstructural). Any flaws created In the remnant J-groove weld by the tack weld installation/removal are acceptable based on Framatome> '> s evaluation of leaving degraded J-groove weld material In the vessel head (Framatome Calculation 32-5019396). This evaluation was reviewed by the NRC and found to provide an acceptable basis for not fully characterizing flaws that might exist in the remnant J-groove weld (Relief Request MR 02-018-2). The Code requirement to perform a PT examination of the area of the tack weld will not be followed. Relief has already been granted by the NRC per SER 2003-0010 to deviate from Section Xl requirements to characterize flaws, and this approval is considered to bound this PT requirement. Although the SER exempted the overlap condition from their approval, this approval is being sought and will be documented once It is received.
arold Chernioff RIE tack weld wrigI o
- 1. e
> Rob Chapman
> Mechanical Design Engineering
> Point Beach Nuclear Plant
> Ph 920-755-7636
> Fax 920-755-7410
-M i
I Ii I
i Iii I
iIII CC:
<msh@nrc.gov>