Hydrostatic Test Pipe Laydown Procedure
Hydrostatic Test Pipe Laydown Procedure
(OP)
Hi everyone!
I'm from piping design section and I'm currently doing a hydrotest diagram. My problem is that I dont really have any site experience for me to be very confident in providing test limits. I do know know that common test limits are where there is material and class break. In some cases where control valves are to be removed from the line for hydrotesting, some guys with site experience says that they usually provide removable spool at that area, they also said that they usually combine a couple of test limits into 1 hydrotest package.
My question here actually is how do they do it on site. Do they erect the piping comlpetely first as per design or they do hydrotest once a certain test limit has been completed? How do they do it in pipes running long through piperack? In cases where control valves, are to be removed from line, which is the better option to provide removable spool or use a blind flange and separate the line into two test sections?
Thanks!
I'm from piping design section and I'm currently doing a hydrotest diagram. My problem is that I dont really have any site experience for me to be very confident in providing test limits. I do know know that common test limits are where there is material and class break. In some cases where control valves are to be removed from the line for hydrotesting, some guys with site experience says that they usually provide removable spool at that area, they also said that they usually combine a couple of test limits into 1 hydrotest package.
My question here actually is how do they do it on site. Do they erect the piping comlpetely first as per design or they do hydrotest once a certain test limit has been completed? How do they do it in pipes running long through piperack? In cases where control valves, are to be removed from line, which is the better option to provide removable spool or use a blind flange and separate the line into two test sections?
Thanks!





RE: Hydrostatic Test Pipe Laydown Procedure
Regards,
Mike
RE: Hydrostatic Test Pipe Laydown Procedure
The equipment (control valves/pumps, etc.) to be removed from the test due to potential damage are defined by Engineering or the Owner.
Dummy spools may be used in place of equipment or pipe blinds can be used to isolate equipment. Flanged joints are recommended for equipment that will be removed.
Valves are often left in place or the pipe system is tested up to the valve(s) in the closed position.
RE: Hydrostatic Test Pipe Laydown Procedure
Thanks for the reply, I understand what your saying but I didnt really get the answer I needed in terms of how do they do it in site?
SntMan,
This is actually my first post and I might have been posted it in the wrong section, can this thread be moved?
RE: Hydrostatic Test Pipe Laydown Procedure
RE: Hydrostatic Test Pipe Laydown Procedure
RE: Hydrostatic Test Pipe Laydown Procedure