How to define a pipe lot size?
How to define a pipe lot size?
(OP)
Hi all,
Can someone show me how to define a pipe lot size for the purpose of NDE? I heard there could be many ways to do this but I don't know what they are as I don't do piping much. B31.3 specifically tells you that the amount of RT, or any NDE, is to be applied to a "lot" of pipe. So for RT, tracers is applied to a "lot", whatever that lot is as defined by the Owner. I would like to know the correct way and typical way people have define the "lot".
Thank you.
Can someone show me how to define a pipe lot size for the purpose of NDE? I heard there could be many ways to do this but I don't know what they are as I don't do piping much. B31.3 specifically tells you that the amount of RT, or any NDE, is to be applied to a "lot" of pipe. So for RT, tracers is applied to a "lot", whatever that lot is as defined by the Owner. I would like to know the correct way and typical way people have define the "lot".
Thank you.





RE: How to define a pipe lot size?
Per 344.1.3 Note 2, "The quantity or extent of of a designated lot should be established by agreement between the contracting parties before the start of the work."
RE: How to define a pipe lot size?
Steve Jones
Materials & Corrosion Engineer
http://www.pdo.co.om/pdoweb/
RE: How to define a pipe lot size?
Thank you for your suggestion; it is one choice for lot definition I could consider with my inspector to define before we start the job.
The other choice I have been advised (by piping fab shop) to use for field piping is to define the lot as the amount of welds done in a day. I know where they are coming from: it is to the fabricator's advantage. For the Owner's advantage point of view, I would think it is not a good idea as we have to pay for all those RT.
RE: How to define a pipe lot size?
Thanks for your reply.
RE: How to define a pipe lot size?