API 1104 Dissimilar Thickness please help
API 1104 Dissimilar Thickness please help
(OP)
Dear friends,
In cross country pipe line as per API 1104,i have three different thickness 7.6mm,10.3mm,11.9mm.I qualified PQT for 7.6mm its supports thickess ranges from 4.9 mm to 19.1 mm.The problem is i have the joint between 7.6 mm to 10.3 mm and 7.6mm to 11.9mm.Is it require PQT for these dissimilar thickness seperately?If not required please explain where it specified in API 1104.
In cross country pipe line as per API 1104,i have three different thickness 7.6mm,10.3mm,11.9mm.I qualified PQT for 7.6mm its supports thickess ranges from 4.9 mm to 19.1 mm.The problem is i have the joint between 7.6 mm to 10.3 mm and 7.6mm to 11.9mm.Is it require PQT for these dissimilar thickness seperately?If not required please explain where it specified in API 1104.




