Pipefitter / Steamfitter

1. 1
   Apply to UA Local Pipefitter Apprenticeship

   The United Association (UA) sponsors pipefitter apprenticeships through local chapters. Find your local at ua.org. Requirements: 18+, high school diploma, basic math aptitude (algebra), valid driver's license. UA pipefitter applications typically open annually — some locals have waitlists.

   UA local pipefitter application
2. 2
   Complete 5-Year UA Apprenticeship

   UA pipefitter apprenticeships are 5 years combining 9,000+ hours of OJT with classroom instruction: process piping systems, pipe fabrication (threading, welding, flanging, grooved coupling), blueprint and isometric drawing reading, pipe stress and support, steam trap and valve maintenance, instrumentation basics, and industrial safety (OSHA 30, confined space, hot work). Starting wages 40–50% of journeyman scale.

   5-year UA apprenticeship
3. 3
   Earn ASME Welding Qualifications

   Industrial pipefitters weld pipe to ASME B31.1 (power piping) and B31.3 (process piping) standards — similar to boilermaker ASME qualifications. ASME pipe welding qualification (6G test position) is the most demanding and most valuable welding credential a pipefitter can hold. Pipe welders at nuclear plants and refineries earn the top of the journeyman scale.

   ASME B31.1/B31.3 pipe welding
4. 4
   Develop Instrumentation and Controls Knowledge

   Industrial pipefitters who understand process instrumentation — pressure gauges, flow meters, control valves, safety relief valves, and transmitters — provide more comprehensive maintenance capability and access roles in instrument technician or process engineering support positions. Some UA locals provide instrumentation training within the pipefitter curriculum.

   Instrumentation and controls basics
5. 5
   Target Power Plant or Refinery for Peak Income

   UA pipefitters working in nuclear power plants, fossil fuel power stations, and petroleum refineries earn the highest wages in the trade. Nuclear pipefitters with ASME N-stamp qualifications and nuclear QA training earn $90K–$105K+. Refinery turnaround pipefitters earn premium overtime during scheduled shutdowns.

   Nuclear or refinery specialty

• 6:00 AMJob scope review — continuing the high-pressure steam header replacement on a power plant unit. Today: complete the welding on the last three field joints (2-inch chrome-moly pipe), perform visual and dimensional checks, and prepare for the radiographic examination tomorrow.
• 6:30 AMPre-heat setup — chrome-moly pipe requires pre-heating before welding to prevent cracking (PWHT requirements per ASME B31.1). Set up the resistance heating elements on the pipe adjacent to the weld. Verify preheat temperature with a contact pyrometer: 400°F minimum required, currently reading 425°F. Good.
• 7:00 AMRoot pass — GTAW (TIG) root pass on the first joint. Position: 6G fixed pipe. Precise fit-up, correct root gap, consistent travel speed. Root pass complete. Visual examination: full fusion, acceptable profile. Move to fill passes.
• 9:00 AMFill and cap — SMAW fill and cap passes (E9018 electrode for P91 chrome-moly). Multiple passes, cleaning between each, monitoring interpass temperature. Final visual on the completed weld: profile acceptable, no visible defects.
• 11:00 AMJoint 2 and 3 — complete the remaining two weld joints using the same procedure. Mark each weld with welder ID and weld number per the QA traveler.
• 12:00 PMLunch — 30 minutes.
• 12:30 PMDimensional check — measure the as-installed pipe routing against the isometric drawing. All dimensions within tolerance. Verify support locations and hanger rod plumb.
• 2:00 PMRT preparation — the NDE contractor will radiograph all three weld joints tomorrow. Mark each weld location with paint stick (weld number, radiograph location markers). Confirm the radiation area will be properly cordoned for the X-ray work.
• 4:00 PMPWHT documentation — complete the weld data cards for each joint: material heat numbers, filler metal lot numbers, preheat/interpass temperatures recorded, welder qualification number. Documentation is as important as the weld itself in power plant quality work.

Industrial pipefitting and steamfitting — ASME code pipe welding, pressure system installation, and industrial process piping — is physical, precision craft work in industrial environments that current robotics cannot perform at any meaningful scale. AI is influencing design coordination and inspection but the pipe goes in by human hands.