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Re: [SUSPECTED SPAM] Re: [MW:14690] P1 Material Pipe welding Joints RT and MT before PWHT is Acceptable or not ?

By Materials & Welding
Hi friends
 
It is acceptable because your performend before PWHT is not ignore the code reference. This NDT to check any discontinuities ,if any finding  you can repair with out PWHT. .Most of the contrctor /company impliment NDT before PWHT because:
1. Check any discontinuities
2. To confirm and remove  the minor doscontinuities to ensure it did not contribute or accumulate become major defect
3.to reduce cost of repair better carry out before PWHT
4. To compare any discontinuities sizing before and after pwht
5. If NDT after  PWHT,you found non acceptable defect that become very costly for repair.
6.Normally NDT after PWHT check "0 tolerance defect" (crack)

regards
On Mon, Jun 25, 2012 at 9:21 PM, Ramchandra vichare <vicharerke@indiatimes.com> wrote:

----- Original Message -----
From: mpk mpk
To: materials-welding
Sent: Mon, 25 Jun 2012 15:18:08 +0530 (IST)
Subject: [MW:14676] P1 Material Pipe welding Joints RT and MT before PWHT is Acceptable or not ?


Dear friend,

It can be acceptable but, only for internal judgement of workmanship/quality of weld (i.e.to observed any repair etc.) but If your job requirement is heat treatment you must go for RT after Heat treatment eventhough you attend RT or any NDT (as required)  before heat treatment & it may be acceptable before heattreatment .

Regards,
RKVichare






Dear experts,


P1
Material Pipe welding Joints  RT and MT examination  before PWHT  is Acceptable or not ?


As per 2010  ASME B.31.3 para 341.3 Examination requirements,


(a) for P.nos 3,4 and 5 materials Examination shall be performed after completion of any heat treatment.


Thank you


YEM.





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The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.

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To post to this group, send email to materials-welding@googlegroups.com
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For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.

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