Trade licensing overview · boilermaker
How boilermaker licensing works — Michigan
How this trade is regulated in Michigan. jurisdiction-inspector-required The framework below describes the national pathway most boilermakers in Michigan follow.
Boilermakers as a construction occupation are not state-licensed, but the boilers and pressure vessels they build, install, and repair are regulated through jurisdictional boiler inspectors under the National Board Inspection Code (NBIC), and the fabricating shops they work for hold ASME code stamps rather than the individual worker.
Boilermaker wages in Michigan · BLS OES A01 2024
Wages are state-level annual figures from the U.S. Bureau of Labor Statistics Occupational Employment and Wage Statistics program (A01 2024). Specific boilermaker earnings in Michigan vary by metro area, employer type, union membership, and years of experience. Verify the current state and metro figures on the BLS OES site (bls.gov/oes).
What this trade actually looks like in Michigan
Boilermakers in Michigan support power-plant outage work, refinery turnarounds, shipyard construction, and large-vessel fabrication. Work concentrates in the Grand Rapids-Wyoming-Kentwood and Detroit-Warren-Dearborn metro areas. The actual mix of project types depends on which segments of Michigan's economy are active in any given year.
Where they work
BLS reports boilermaker employment in Michigan concentrated in: Grand Rapids-Wyoming-Kentwood, MI (110 employed, median $45,330); Detroit-Warren-Dearborn, MI (median $96,510). Statewide reported employment is 500 workers (BLS OES, latest release).
Pay context
BLS OES reports a Michigan boilermaker median annual wage of $66,440 (SOC 47-2011, latest OES release), -5.3% versus the national median of $70,140. Cost-of-living, metro versus rural premium, union density, and years of experience all move the actual paycheck. Verify the current state and metro figures at https://www.bls.gov/oes/.
Training pathway
International Brotherhood of Boilermakers (IBB) is the dominant union pathway. The trade is almost entirely union and travel-heavy: the National Apprenticeship Program rotates members through outages and turnarounds across multiple states each year.
Considerations
State workforce projections (Projections Central, base 2022–2032) estimate -9.9% growth in boilermaker employment over the decade, with about 90 annual openings. If you care about top-quartile construction-trade wages and are willing to travel, boilermaking pays well but is rotational by design. If you want to be home every night, this trade is rarely a good fit outside a few power-plant or shipyard hub markets.
Michigan boilermaker snapshot
| MSA | Employed | Median wage |
|---|---|---|
| Grand Rapids-Wyoming-Kentwood, MI | 110 | $45,330 |
| Detroit-Warren-Dearborn, MI | — | $96,510 |
STATE LICENSE STATUS
No U.S. state issues a person-level boilermaker license for construction or repair work. Licensing authority attaches to the equipment, not the worker: most states and Canadian provinces have adopted the National Board Inspection Code (NBIC) into law and appoint a Chief Boiler Inspector who regulates installation, repair, and in-service inspection of boilers and pressure vessels (https://www.nationalboard.org/). A boilermaker's field work is therefore authorized indirectly. The repair organization holds the stamp, the jurisdictional inspector witnesses the job, and the welder on the seam holds a procedure-specific welder performance qualification. States that license welding or mechanical contractors separately still do not license boilermakers at the journeyworker level.
NATIONAL BOARD / NBIC
The National Board of Boiler and Pressure Vessel Inspectors publishes the NBIC and administers multiple accreditation marks that are adopted into law by most U.S. and Canadian jurisdictions (https://www.nationalboard.org/). The R stamp authorizes an organization to perform repairs and alterations to pressure-retaining items; the NR stamp applies to nuclear new construction repairs; the VR stamp covers pressure-relief valve repair (https://www.nationalboard.org/). Each stamp is held by an organization with an accepted Quality Control manual and in-scope personnel, not by the individual boilermaker. Field repairs are typically witnessed and signed off by a Commissioned Inspector who holds a National Board Commission, with data reports filed to the jurisdiction (https://www.nationalboard.org/).
ASME CODE STAMPS
ASME certification is issued to organizations rather than individuals through a four-phase preparation, application, assessment, and certification process (https://www.asme.org/certification-accreditation). Boiler and pressure-vessel shops carry BPVC certificates such as the S designation for power boilers, U for pressure vessels, PP for pressure piping, and H for heating boilers, among others referenced in ASME's Certificate Holder directory (https://www.asme.org/codes-standards/publications-information/bpvc-resources). A boilermaker does not personally carry an S or U stamp; the employing shop or field repair organization does, and the worker must operate under that shop's quality program to deposit code weld or perform stamp-governed fabrication.
APPRENTICESHIP PATHWAY
The International Brotherhood of Boilermakers, organized in 1880, services more than 200 local lodges across North America and administers the Boilermakers National Apprenticeship Program (BNAP), headquartered in Kansas City, Missouri (https://www.boilermakers.org/, https://bnap.com/). Entry is through a local lodge under the construction-sector or shop/maintenance-sector agreement covering the applicant's region. Per the union's public material, BNAP curriculum covers welding, rigging, and heavy fabrication (https://bnap.com/), with the classic four-year / 7,500-plus OJT-hour structure typical of DOL-registered construction apprenticeships (https://www.apprenticeship.gov/apprenticeship-job-finder). MOST, the labor-management trust covering training, safety, and workforce programs, is cited throughout the union's materials as the common-sense infrastructure behind those certifications.
WELDING CERTIFICATIONS
A working boilermaker typically stacks multiple welder performance qualifications because the governing code changes with the job. Pressure-boundary welds fall under ASME Boiler & Pressure Vessel Code Section IX, which sets variables for requalification when essential parameters change (https://www.asme.org/certification-accreditation). Structural attachments, platforms, and supports run under AWS D1.1 (https://www.aws.org/certification). Cross-country pipeline tie-ins follow API 1104 (https://www.api.org/). Individual qualifications are procedure-specific and can lapse if the welder stops using the process for a defined period, so boilermakers re-test routinely as they move between shops and turnarounds.