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[MW:9396] Procedure to measure pipe ends dimensions

Dear all, I'd like to get a procedure to measure the ends of pipes: Methods, instruments to be used, etc. for thickness, ovality, internal and external diameter.
 
Thanks for your help.


Eduardo Calva



 

Subject: Re: [MW:9332] Hardness Issue
From: FMajdnia@technip.com
To: materials-welding@googlegroups.com
Date: Wed, 19 Jan 2011 18:10:26 +0100

Dear Edvardo,
We had a similar case in 1999 when we were running PQR. The hardness on the weld cap was around 270 HV10 against 248. Several attempts were made to achieve the target with control of heat input with consultation of a Welding Institute in Scotland. The final result of this qualification and R&D was that the C eq of the the pipe material used had the ruling effect. With a Ceq of o.42 it was impossbile to meet the project requirements. The suggested Ceq was 0.39 which no supplier could commit for that. 
 
To make the long story short, it was finally suggested to accept the hardness of  275 HV10 on the cap layer and 248 around root passes. This was accepted by Client. Now the hardness of 275 is easily set as acceptable value worldwide for obvious reasons.
You can search the web for papers on the subject. Let me know if I can help on this.
 
Regards
 
-----materials-welding@googlegroups.com wrote: -----

To: <materials-welding@googlegroups.com>
From: "Kathalingam Babu" <kathalingam.qaqc@ppl.com.sg>
Sent by: materials-welding@googlegroups.com
Date: 01/16/2011 05:53PM
Subject: Re: [MW:9248] Hardness Issue

Hi
 
It has to satisfy the requirement of H.7.3.3 (Page 113) of API 5L spec (2010 Ed.),
 
Thanks & Regards,
 
K. Babu
 

----- Original Message -----
Sent: Sunday, January 16, 2011 2:44 PM
Subject: Re: [MW:9235] Hardness Issue

Clava,
 
Just take 2,3 reading just near to high hardness value and check weather it repeats or not.If it does not repeat you can convince ur client.
 
Regards,
 
Manish Kulkanri

--- On Sat, 15/1/11, Eduardo Calva <eduardocalva@hotmail.com> wrote:

From: Eduardo Calva <eduardocalva@hotmail.com>
Subject: [MW:9228] Hardness Issue
To: materials-welding@googlegroups.com
Date: Saturday, 15 January, 2011, 11:40 PM


Dears:
 
Could you please tell me what can I do to solve this issue?:
 
1.- HV hardness requirement for X-60 1" wt pipeline girth welds: 248 HV
2.- Of 15 measurements one value reached 285 HV .
3.- The weld is under water righ now.
 
How can we solve this?, I think just to support, because we can't take the pipe out.
 
Regards.


Eduardo Calva



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