Hello!

Now I'm working for LNG Terminal project. Generally pipe size of LNG plant is too much big and temperature is around -196 deg C. In case of LNG rundown pipe, the bowing is occured due to delta T between top and bottom pipe. The bowing analysis should be considered when LNG is loading. However, I don't know how much delta T is applied, that is my query.
And also, is it required to calculate or assumption of engineering practice? please let me know if anybody know that delta T.

Best regards,
D.H.Seok

I think it is the process department to decide which lines need thermal bowing analysis based on size , service ( e.g. flare line),partial filled line . Delta T temperature also process to provide.