Learn · Boilermaking
Boilermaking
Pressure vessels, tube work and code repairs under ASME rules.
Learning paths
Just browsing? Start here: Boilers and Pressure Vessels →
Content
Pressure Work 9 lessons
Vessels
- Boilers and Pressure Vessels
What a boiler and a pressure vessel actually are, why they are built to a code rather than to a drawing, and which ASME section governs which kind of equipment.
- Tube Rolling and Replacement
Rolling, expanding and replacing boiler tubes: the bread-and-butter repair skill of the trade, and why a tube is not a pipe.
- ASME Welding Qualifications for Boiler Work
How welding qualification works for pressure equipment: the employer qualifies the procedure, then qualifies the welder against it, all under ASME Section IX.
- Code Repairs and R-Stamp Work
Repairing pressure equipment that is already in service, under the NBIC rather than the original construction code, and why the R stamp belongs to the shop and not to you.
- Watertube and Firetube Boilers
The two families of boiler, what puts the water inside the tubes or outside them, the drums and headers that hold the pressure, and why the choice changes everything about how you repair one.
Testing
- Hydrostatic Testing
Filling a vessel with water and pressurising it to prove the joints, why water and not air, and who has to witness the test.
- Nondestructive Examination of Pressure Welds
Radiography, ultrasonics, magnetic particle and dye penetrant: what each one can see inside a weld, and why pressure work leans on them so heavily.
Welding
- WPS, PQR and WPQ
Three documents that people mix up constantly: the procedure you follow, the record that proves the procedure works, and the paper that says you can follow it.
- Section IX vs AWS D1.1
Why a structural welding certificate does not let you weld on a boiler, and why the two qualification systems answer different questions.
Career 4 lessons
- The Boilermaker Apprenticeship (BNAP)
The four-year Boilermakers National Apprenticeship Program: 6,000 field hours, 576 classroom hours, and how you apply through a local Lodge.
- Outage and Turnaround Work
Why boilermaker work follows outages and turnarounds, what a travelling schedule really looks like, and how that shapes pay and life.
- Stationary Engineer and Boiler Operator Licensing
Building a boiler and operating one are different jobs with different rules: operating a plant is licensed by your city or state, and the boilermaker trade itself is not.
- Becoming a Commissioned Inspector
The second career at the end of the trade, and the catch nobody mentions: you cannot hold the commission unless an inspection organization or a jurisdiction employs you.
Safety 2 lessons
Confined Space
- Confined Space Entry in Boilers and Vessels
A boiler drum is the textbook permit-required confined space, and which OSHA rule governs your entry depends on whether the job is construction or general industry.
Hot Work
- Welding, Cutting and Hot Work Safety
Fire watch, ventilation, preservative coatings and fuel gas: the hazards that come with cutting and welding inside a vessel, and the two OSHA subparts that cover them.
Code and Inspection 7 lessons
Code
- The ASME BPVC Sections
A map of the Boiler and Pressure Vessel Code: which section governs power boilers, which governs heating boilers, which governs pressure vessels, and which governs welding.
- Section I: Power Boilers
The construction rules for power boilers, the equipment most boilermakers spend their careers on, and where Section I stops.
- Section VIII: Pressure Vessels
Where pressure vessels part company from boilers, and what Divisions 1, 2 and 3 are actually dividing.
Stamps
- The ASME Certification Mark and Its Designators
What that stamp on the nameplate means, why it certifies a company's quality system rather than any person's skill, and what the letters after it are telling you.
- The NBIC and the R Certificate of Authorization
Once equipment is in service the construction code hands over to the NBIC, and repair work runs under a shop's R certificate rather than the original stamp.
- Repair vs Alteration Under the NBIC
One word decides how much paperwork, engineering and inspection a job needs, and getting it wrong is the classic way a shop loses its certificate.
Inspection
- Who Signs Off Your Work
Authorized Inspectors, Inservice Inspectors and the agencies that employ them: the people whose acceptance turns finished welding into code work.
Credentials in this trade
- AWS Certified Welder
- ASME Section IX Welder Qualification
- National Board R Certificate of Authorization (R Stamp)
- National Board Commissioned Inspector
- ASME Certificate of Authorization
- ASME Authorized Inspection Agency (AIA) Accreditation
- Stationary Engineer / Boiler Operator License
- Boilermaker Apprenticeship Completion