I asked my fitters. Here is what they normally use for reference (some have it in their shirt pockets, a 4"x7" blue book). Pipe Fitters Manual "Welding Fittings and Piping Components" by Tube Turn, Inc.
In my 32 years participation in piping projects for the nuclear,
cogen, refineries, pipelines, wastewater, and process industries (11
years as field project manager), I heard many "experienced" fitters
and welders telling tall stories about how they've saved the project
while office engineers screwed the design up. In fact, such stories
come from other crafts as well; the ironworkers, electricians, etc. I
guess ignorance IS bliss.
Paul, unless it is small-bore piping, fitters don't determine piping
layout at the detail level unless approved by the responsible
engineer. What's on the approved drawing is what's to be installed.
The reason why projects create FCNs and As-built documentations.
When it comes to questions of "how", none better then to ask your
pipe fitters, but when the questions are "why", "when" "where"
and "tell me more", the design engineers are the ones you deal with.
Many times fitters give valuable suggestions to improve the design
layout prepared by the engineers. So, it is prudent that engineers
are thoughtful of what pipe fitters run into when design information
are incomplete, incomprehensible, or sometimes downright ridiculous.
Analysis, design rules, specifications, Codes, reports, and drawings
are one side of the equation; Materials, fabrication, and
installation are another.
To become an experienced piping engineer you must understand problems
and frustrations the project encounters during fabrication,
installation, testing, and startup. Filed experience for engineers is
invaluable.
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