NCCER Industrial Boilermaker – Maintenance Knowledge Verified credential — Requirements & Free Practice

US · License preparation

200 free questions · Answer explanations · No signup required

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Licenses, application pathways and examination requirements

Each license and applicant pathway has its own requirements and exemptions. Choosing practice questions does not determine your eligibility.

Knowledge Verified credential for the Industrial Boilermaker – Maintenance journey-level assessment.

Initial by examination

Administration: NCCER-accredited Assessment Program; public centers may offer access.
Boundary: Knowledge Verified follows a passed assessment; full craft certification additionally requires performance verification.

Examination outline

Safety (8.45%)
Welding Basics (8.45%)
Gaskets (7.04%)
Boilermaking Fundamentals (23.94%)
Construction Drawings (2.82%)
Rigging (18.31%)
Tubing and Piping (12.68%)
Towers and Exchangers (18.31%)

Examination sources