pig stuck in pipeline
pig stuck in pipeline
(OP)
During water filling in pipeline we lunch 2 pigs in the pipe one of them arrived in the receiver while the other one seems to be stuck somewhere. The question is can we start the hydrotest and apply the pressure while the pig still inside?
Note that theoretically the pipe is full with water.
Appreciate if someone can advise me.
Note that theoretically the pipe is full with water.
Appreciate if someone can advise me.





RE: pig stuck in pipeline
IMO if you measure the pressure in both ends and its only one pig then there cant be a "low pressure pocket" and it should be OK. You have to consider if you will pressurize from both ends though?
Best regards
Morten
RE: pig stuck in pipeline
David Simpson, PE
MuleShoe Engineering
"Belief" is the acceptance of an hypotheses in the absence of data.
"Prejudice" is having an opinion not supported by the preponderance of the data.
"Knowledge" is only found through the accumulation and analysis of data.
RE: pig stuck in pipeline
the reason why we dont take the pig out because our contractor dont want to take the water out from the line and fill it again.
the pig is by-directional type.
the idea is to apply the pressure and monitor it to make sure there are no pressure difference between both ends.