Further to trailing mail, welding electrodes E6010 and E7010 are not suitable for welding of API 5L X65.
Check the strength.
Regards.
John
The Pipe is = API 5L -Gr.X65Electrodes are E6010 (Root) and E7010(Filler+ Capping)Code : API 1104.
On Sat, 12 Feb 2011 19:09:34 +0530 wrote
>Eldho,
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Good morning,
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If there is specifiction for this project, it will dominate requirements of API 1104. My advise for you is as below.
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Check the time between weld passes listed on WPS. Time beween passes is essential variable as per API 1104, clause 5.4.2.8.
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Clause says "An increase in maximum time bteween completion of root bead and start of second bead (hot pass) constitute an essential veriable"
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What to do after hot pass or second bead? Code is silent. It does not say anythig.
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It is upto manufacturer to decide. In other words, time between weld passes after hot pass (second bead after root pass) is non-essential variable.
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There is no need to cut the joints. You can proceed with welding provided,
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1. Proper buffing is carried out to remove rust
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2. Maintain interpass temperature as per project approved procedure.
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I told you earlier as well, all answers are in code book. Do you remember? Just read it with interest.
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Have a nice day.
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John Rodrigues
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On Sat, 12 Feb 2011 18:50:34 +0530 wrote
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>Dear All,
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Presently I am working in a crosspipelineproject, an unexpected problem hasoccurredduring the production,due towhichthe welding had to be stopped,but there is 19 joints which has completed only the (root +hot-pass),still there is (Filler 1 + Filler 2 + Capping) balance and the joints has been left open for more than 48hrs.
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My doubt is, if I want to resume the welding now ,whether I have to cut out all the 19 joints andre-weld ?orShould I reheat and resume with the welding.?
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If the joints has to be cut out where is it mentioned so (any applicable code)
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The Pipe is = API 5L -Gr.X65Electrodes are E6010 (Root) and E7010(Filler+ Capping)Code : API 1104.
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Kindly please suggest your expert advices on this issue.
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Thanking You,
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Eldho Isaac.
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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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John Rodrigues
John Rodrigues
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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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