NCCER Boilermaker

Expect multiple-choice written items, often delivered as module tests through NCCER's online testing links, combined with hands-on performance verification of trade tasks. The written portion checks recall and code knowledge, while the performance portion confirms you can actually lay out, cut, fit, and rig safely under an instructor's observation.

Difficulty tracks the level you are testing at. Early modules lean on safety, tools, and basic math; later modules combine blueprint reading, layout, rigging calculations, and vessel terminology. Candidates who only memorize definitions usually struggle with applied layout and rigging items, so practice the calculations as well as the vocabulary.

Retake rules are set by the accredited training or assessment program that administers your testing, not by a single public policy. Ask your instructor or center before you test so you know the waiting period and any limits. The source material reviewed for this page does not publish a universal retake policy.

Module tests are short, module-specific checks; journey-level assessments cover broader content. NCCER's public site does not list a single question count or time limit for Boilermaker testing, so confirm the length and any time limit with your accredited center when you schedule.

Start with safety and tools, because those concepts reappear in every later module. Then move to oxyfuel cutting and welding practice, followed by layout and blueprint reading, then rigging and material handling, and finish with boilers, pressure vessels, and heat exchangers. Each layer assumes the one before it.

Weak blueprint and layout fundamentals, skipped safety details, and poor rigging math. Candidates also lose points by rushing performance tasks instead of demonstrating the sequence an evaluator is checking. Slow down, state your safety checks out loud, and verify dimensions twice before cutting or fitting.

NCCER provides a Verify Credentials tool on its website, along with options to create or find your NCCER number. Employers can use these to confirm training completions and credentials. Keep your NCCER number accessible and make sure your name matches your training records exactly.

Testing is generally delivered through accredited training and assessment programs, so you will normally register through a center rather than testing entirely on your own. Use NCCER's Find a Center tool to locate an accredited site near you. Some online module testing is available once you are set up in the system.

The source material reviewed for this page does not state a Boilermaker exam fee or a credential validity period. Pricing depends on the accredited center, the modules purchased, and any assessment fees. Contact your local NCCER-accredited program directly for current costs and renewal guidance.