Category: Section 13 - Pipe Fabrication Shop Issues
This article pertains to the shop spooling of butt-welded pipe, fittings and flanges.
Commonly the butt-welded piping is NPS 2 or NPS 2½ and above, depending on the company piping specifications.
The goal of all projects is to do as much welding as is possible in the controlled environment of a fabrication shop in order to minimize the costlier field welding, and while it would be nice to be able to fabricate whole piping systems and ship them to site in one piece, this is of course impossible.
Therefore, shop fabricated piping systems must be broken into convenient pieces (spools) for transportation to the field.
This is accomplished by breaking the system down into multiple spools that will fit within a pre-determined shipping box size for later field erection.