Friday, April 23, 2010

RE: [MW:4939] FCAW welding for pressure part

Can ayone explain to me why one goes for FCAW - manual? As I see it, it is intended for automated welding (like SAW). But then again, while SAW is relatively safe and efficient mode of welding, FCAW seems to plentily flawed.   So, why FCAW? And if it HAS to be FCAW, what are the pros and cons - meaning how to get the best out of it?

--- On Thu, 22/4/10, BHARAT GOLE <bharatgole@hotmail.com> wrote:

From: BHARAT GOLE <bharatgole@hotmail.com>
Subject: RE: [MW:4927] FCAW welding for pressure part
To: "Material Welding" <materials-welding@googlegroups.com>
Date: Thursday, 22 April, 2010, 3:56 PM

Its true that LOF is not easy to detect by RT if its not preferenatially oriented.But no NDT method can be replaced by other since each method has its own advantage & disadvantage over each other. So decision of change of RT with UT is depend on so many other factors such as time,economics, skill, retention of records and last but not least recommandation of code of construction.

Bharat B. Gole




Subject: Re: [MW:4917] FCAW welding for pressure part
From: george.dilintas@gr.bureauveritas.com
Date: Thu, 22 Apr 2010 09:58:11 +0200
To: materials-welding@googlegroups.com

The new UT techniques are more accurate than RT


  From: "sachin sankhe" [sachin.sankhe@rediffmail.com]
  Sent: 22/04/2010 06:12 GMT
  To: <materials-welding@googlegroups.com>
  Subject: [MW:4915] FCAW welding for pressure part


Hi,

We`have FCAW welding for pressure part in refinery service

As FCAW welding mainly have discontinuities like incomplete fusion

So we have specified 100 % RT/MP/DP
However UT is more preferred over RT for planar defect due to incomplete fusion
I feel 100 % RT to be replaced by 100% UT

Request you to give your opinion
Regards
Sachin.Sankhe

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