Pipeline Lay-up
Pipeline Lay-up
(OP)
For a 230 km 26" CS pipeline that has been hydrotested (by sections), we need to perform the final lay-up.
After the pipeline sections have been hydrotested separately with the valves being not installed; the golden joints for the valves and the hydrotest limits have been completed.
The drying of each tested section, after disposing the water, was achieved by performing several runs of foam pigs.
The question is: Now, we already completed the whole pipeline, do we need a final complete run of additional pig(s) before the lay-up ?
Note: Lay-up will be done by dry air.
After the pipeline sections have been hydrotested separately with the valves being not installed; the golden joints for the valves and the hydrotest limits have been completed.
The drying of each tested section, after disposing the water, was achieved by performing several runs of foam pigs.
The question is: Now, we already completed the whole pipeline, do we need a final complete run of additional pig(s) before the lay-up ?
Note: Lay-up will be done by dry air.
Mohammed Diab.
Inspection Supervisor - Saudi Aramco.





RE: Pipeline Lay-up
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: Pipeline Lay-up
RE: Pipeline Lay-up
Fuel gas? Really? 230 km of 26" fuel gas pipe?
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: Pipeline Lay-up
RE: Pipeline Lay-up
B.E.
The good engineer does not need to memorize every formula; he just needs to know where he can find them when he needs them. Old professor
RE: Pipeline Lay-up
http://www.satelliteviews.net/cgi-bin/w.cgi/?c=sa&...
"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek
RE: Pipeline Lay-up
Mohammed Diab.
Inspection Supervisor - Saudi Aramco.
RE: Pipeline Lay-up
Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04
RE: Pipeline Lay-up
"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek
RE: Pipeline Lay-up
My apologies for not running this question through “quality control” first! ;)
RE: Pipeline Lay-up
Don't know that it is a "quality control" thing, more a reasonableness thing. It just didn't seem reasonable to conclude that a pipe that big and that long was for fuel gas. Maybe it did to you. My experience is that you can get an awful lot of fuel through a 2-inch line and the biggest I've ever seen was feeding a boiler with a 6-inch line. Sorry you got you nose disjointed over it.
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.