When fabricated spools come up short or a section has been cut out, fitters measure the gap, cut a dutchman to length and weld it in with two new joints. The word also covers patch pieces and short sections used to correct alignment. Supervisors dislike them because each one adds welds, inspection and fit-up time, and they hint that someone measured wrong.
Spool came in two inches short, we'll have to cut a dutchman in, tell QC we've got two more welds to shoot.
Also heard as
- filler piece
- pup
Related terms
Butt weld
An end connection where a beveled valve or fitting end is welded straight to beveled pipe with full penetration.
Two-holing
Orienting a flange so two bolt holes straddle the top centerline instead of one hole sitting dead on top.
Golden weld
The final tie-in weld between new and existing piping that cannot be included in the hydrotest.