Stress Bend

"so we pulled the existing length with crane and forcelly matched the joint fit and welded"

Is this is an accepted BP practice?

lyn

no it is not an acceptable practice in BP

but we are working on this issue , how to resolve it

when a joint forcely matches for welding ,and observe a distortion from its actual path what would be the acceptance critera to reject such practise

plz

guide me if u can

"no it is not an acceptable practice in BP"

What IS the accepted practice?

"how to resolve it"

Simply put, don't "forcefully" insert a replacement section.

"what would be the acceptance critera to reject"

Ideally, your company should provide the criteria, which would be based on standards established by an appropriate engineering organization. For example, we have the American Society of Mechanical Engineers (ASME) and the American Welding Society (www.aws.org).

A nice bend is also beautiful. As the picture shows, I see no way to do it straight on, since both ends do not seem to be in line.

As the photograph suggests, the lack of alignment appears due to bend in pipe route. It would be better to cut main pipe on both ends, instal straight lengths from both ends with a pipe bend in between where lengths meet. I am only estimating the solution with a conventional water piping system layout

This gives me a clue why it leaked in the first place. And if you don't remedy the cause it propably will again. What's the fluid-soil temp differences range? S.M.

Pulling and adjusting the axis is a normal practice in piping up to some extent, but effort should be to make it stress free as far as possible. Here, after welding pipe got bent means stress is too high. Better to redo the job.