[MW:1429] Re: ASME B31.3-2006 Ed. Fig. 328.5.2.c

Gap should be given before fit up so that during welding there is shrinkage or expansion of the pipe and also RT should be performed in order to check wether there are any defects or cracks caused during  welding on the weld.If it is a pressure part it is compulsory to perform RT.

 

 

 

with regards

Durrga Prasad

---

From: tong tong <tong2je@gmail.com>
To: materials-welding@googlegroups.com
Sent: Friday, December 26, 2008 7:05:31 PM
Subject: [MW:1428] Re: ASME B31.3-2006 Ed. Fig. 328.5.2.c

Purpose of the gap is to allow the expansion of piping and fitting during welding. If there are no gap between piping and fitting may be can cause distortion. For my opinion, RT is not suitable for fillet weld but may be your client just want to ensure whether the gap is there or not.

Regards,
SBS

On Thu, Dec 25, 2008 at 5:34 PM, Jivan Dhamane <jivanadhamane@yahoo.co.in> wrote:

Dear Friends   As per ASME 3.31.3 gap is given at the time of fit-up and offcurse after weding that gap will be less than 1.5 mm because of  shrinkage due to welding heat. the meaning of RT is nothing but radiography test and i think your client might have asked you to perfom Rt to check whether 1.5mm gap has been provided or not not rejected. Regards,   Jivan Dhamane --- On Wed, 24/12/08, T. Rizal H. <aatkho@gmail.com> wrote: From: T. Rizal H. <aatkho@gmail.com> Subject: [MW:1419] Re: ASME B31.3-2006 Ed. Fig. 328.5.2.c To: materials-welding@googlegroups.com Date: Wednesday, 24 December, 2008, 11:35 PM 1.5 mm gap is set before welding, it is to accomodate shrinkage after welding. Of course, gap will be less than 1.5 after welding, but it is not rejected. What's the meaning after RT?, it is strange to perform RT on the fillet weld. Regards, Tex 2008/12/24 <nozhan@cimtas.com.tr>: > > > (Embedded image moved to file: pic14310.jpg) > After welding, less than 1.5 mm gap is the cause to reject the weld after > RT? > If yes, in accordance which criteria? > > Thanks... > > > > Nebi ÖZHAN > > e-mail:nozhan@cimtas.com.tr > > > -- Regards, T. Rizal Hidayat

---

Unlimited freedom, unlimited storage. Get it now

--~--~---------~--~----~------------~-------~--~----~
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding-unsubscribe@googlegroups.com
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.
-~----------~----~----~----~------~----~------~--~---