COLD SERVICE
COLD SERVICE
(OP)
Hy All
M currently working in a cold service project.....I understand fairly that you need a cold service qualified wps for work on any cold service piping,but i wana make a scenario to ask my question clearly....
Say I Have to fabricate a section of a line Stainless steel pipe, Design pressure: 2000kpa Design Temp: -109 Degrees celcius.
I know that u cant use a wps thats qualified on -45 deg celc atleast you must use -196 Degrees celcius.
Can a welder qualified on -45 be allowed to weld my line?
Given the process to be used,filler,thickness range, F-No and all required qualification are within.
Do I need to requalify him at -196 to meet the full requirements to weld the above mentioned pipe?
Best Regards.
M currently working in a cold service project.....I understand fairly that you need a cold service qualified wps for work on any cold service piping,but i wana make a scenario to ask my question clearly....
Say I Have to fabricate a section of a line Stainless steel pipe, Design pressure: 2000kpa Design Temp: -109 Degrees celcius.
I know that u cant use a wps thats qualified on -45 deg celc atleast you must use -196 Degrees celcius.
Can a welder qualified on -45 be allowed to weld my line?
Given the process to be used,filler,thickness range, F-No and all required qualification are within.
Do I need to requalify him at -196 to meet the full requirements to weld the above mentioned pipe?
Best Regards.





RE: COLD SERVICE
RE: COLD SERVICE
Steve Jones
Corrosion Management Consultant
http://www.linkedin.com/pub/8/83b/b04
All answers are personal opinions only and are in no way connected with any employer.