Thank you Zapster, C2it and unclesyd. The issue with hydrotest is not the pressure, it is the complexity of the jacket and the fact that there is only a one inch inlet and outlet on each section. So if hydrotested there would be a problem with getting water out and drying. In conclusion, it...
Hello All, Here is a question for you. We have a 16" std shd pipe, flanged each end and welded to the flanges is bent plate in two semi circles to make a jacket. The inner pipe has sulphur flowing through it, the outer jacket has steam to heat the sulphur. The inner pipe is 10% Rad, and 10%...
Hi Starrproe,
You have got this the wrong way around. What is stopping you painting? Is there any part of spec or standard that says do not paint prior hydrotest. If there is then you need to put in a concession. If there is not then you are free to paint before hydrtotest.
Hi Sandra,
I think that you need to post a bit more info. Since you say that the pipe is clad with 625. What sort of thickness is this? what is inside pipe? Is overlay due to corrosive enviroment outside pipe? What is external enviroment? and finally what sort of pressure is inside carrier...
Thank you Deanc and DSB123 for you comments. Myself, for what it is worth, feel that you are both right and have valied views. I have never found any specific guidance from codes. Some Clients (eg. Shell) put riders into their DEPs instructing filling W-O-Ls out completely. I have always...
WOLs come in set scheds. Often we are setting wols on thin pipe and do not want to weld all wol prep out as it is not cost effective and causes distortion of carrier pipe. Anybody know of specification or "rule of thumb" for minimum amount of weld required on wol for given carrier or...
