Sunday, March 13, 2011

Re: [MW:10313] pqr api 1104



Dear Sir,

Please refer Table 2 , you can come to know the relation of Diameter and wall thickness



Thanking You,

Honesty is the best Policy

With Warm Regards,

Muthu Barathi P
Mobile No:00962788269821 (Jordan)
00962775401951

On Sun, 13 Mar 2011 13:40:51 +0530 Geoff Rogers <gbr476@gmail.com> wrote
>What you want to do is acceptable per API 1104.  More detail is provided below.
>
>API 1104 does not predefine the diameter or wall thickness ranges/limits for welding procedures when they are qualified to the section 5 and 12 requirements which covers all welding processes except welds that will be evaluated to the Appendix A ECA weld acceptance criteria.  It is up to the owner company or contractor to set the wall thickness and diameter ranges.  Many used the suggested limits which are the ones specified for welder qualifications.  API 1104 does consider wall thickness range/group an essential variable; therefore, once the wall thickness range is specified on the WPS, it cannot be changed without qualifying a new procedure.  The diameter range is not an essential variable and therefore it can be changed without qualifying a new procedure.
>
>Only welder qualifications have defined diameter and wall thickness limits for single qualification.  Diameter 2.375" - 12.75"; greater than 12.75". Wall thickness 4.8mm - 19.1mm; greater than 19.1mm. 
>
>
>
>
On Sat, Mar 12, 2011 at 5:04 AM, vijay kumar <vijaykumaar80@gmail.com> wrote:
>
Dear All,
>
>i have a pqr 20" thk 11.91 mm as per api1104 ,for the production weld
>we can apply this to 10" pipe of same grade material.
>
>--
>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.
>

>

--
>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.
>

--
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.

No comments:

[MW:34820] RE: 34813] Clarification in Rate of heating and cooling.

Hello,   Please see the response below.   Regards.   P. Goswami, P. Eng, IWE.   From: materials-welding@googlegroups.com <materials-weld...