BOILERMAKER VERIFIED EXAM QUESTIONS AND
ANSWERS - LATEST VERSION 2026
1. Advanced steam boilers can operate at temperatures as high as how many
degrees?
ANSWER : 1,150
2. What is one way of identifying insulation that may contain asbestos?
ANSWER : Testing by a qualified person
3. Supercritical boilers can operate at pressures as high as how many psi?
ANSWER : 4,500
4. How are hazards minimized when performing hot work on areas coated with
lead-based paint?
ANSWER : By performing an area survey prior to cutting or grinding
operations
5. Grinding operations inside a boiler present an explosion hazard due to what?
ANSWER : Combustible gases
6. The weight of an object to be lifted should not exceed what limit of the lifting
equipment?
ANSWER : Safe working load
7. What term describes asbestos insulation that is easily crumbled into fibers that
become airborne?
ANSWER : Friability
8. Where is one specific place on a boiler where asbestos may commonly be
found?
ANSWER : Door seals
, 9. What should a worker do before entering a confined space?
ANSWER : Inspect the space's shoring and support
10.Why must a boilermaker at extreme heights prevent falling objects?
ANSWER : To prevent injury to personnel working below
11.Why is extra ventilation needed when welding with shielding gas?
ANSWER : The gas is heavier than air and collects in low areas
12.What must be worn when working at heights?
ANSWER : A safety harness
13.When are suspended scaffolds particularly useful?
ANSWER : When working on boiler interiors
14.What are boilermakers normally given at the beginning of a shift?
ANSWER : A safety briefing
15.Why does cutting metals inside a boiler present an added hazard?
ANSWER : Combustion residue fumes
16.What is a material called that can maintain its strength at high temperatures?
ANSWER : Refractory (Note: The user's list originally stated "Lagging," but
technically Refractory fits this definition best in a boiler context).
17.An insulating material that easily crumbles into fibers is said to have what
characteristic?
ANSWER : Friability
18.What is a buildup of solid combustion byproducts in a boiler called?
ANSWER : Combustion residue
19.What is the act of using braces to ensure the integrity of a confined space
called?
ANSWER : Shoring
ANSWERS - LATEST VERSION 2026
1. Advanced steam boilers can operate at temperatures as high as how many
degrees?
ANSWER : 1,150
2. What is one way of identifying insulation that may contain asbestos?
ANSWER : Testing by a qualified person
3. Supercritical boilers can operate at pressures as high as how many psi?
ANSWER : 4,500
4. How are hazards minimized when performing hot work on areas coated with
lead-based paint?
ANSWER : By performing an area survey prior to cutting or grinding
operations
5. Grinding operations inside a boiler present an explosion hazard due to what?
ANSWER : Combustible gases
6. The weight of an object to be lifted should not exceed what limit of the lifting
equipment?
ANSWER : Safe working load
7. What term describes asbestos insulation that is easily crumbled into fibers that
become airborne?
ANSWER : Friability
8. Where is one specific place on a boiler where asbestos may commonly be
found?
ANSWER : Door seals
, 9. What should a worker do before entering a confined space?
ANSWER : Inspect the space's shoring and support
10.Why must a boilermaker at extreme heights prevent falling objects?
ANSWER : To prevent injury to personnel working below
11.Why is extra ventilation needed when welding with shielding gas?
ANSWER : The gas is heavier than air and collects in low areas
12.What must be worn when working at heights?
ANSWER : A safety harness
13.When are suspended scaffolds particularly useful?
ANSWER : When working on boiler interiors
14.What are boilermakers normally given at the beginning of a shift?
ANSWER : A safety briefing
15.Why does cutting metals inside a boiler present an added hazard?
ANSWER : Combustion residue fumes
16.What is a material called that can maintain its strength at high temperatures?
ANSWER : Refractory (Note: The user's list originally stated "Lagging," but
technically Refractory fits this definition best in a boiler context).
17.An insulating material that easily crumbles into fibers is said to have what
characteristic?
ANSWER : Friability
18.What is a buildup of solid combustion byproducts in a boiler called?
ANSWER : Combustion residue
19.What is the act of using braces to ensure the integrity of a confined space
called?
ANSWER : Shoring
