NCCER BOILERMAKER MAINTENANCE EXAM QUESTIONS AND
ANSWERS 100% VERIFIED GUARANTEED 2026/2027
BoilerMaker Maintenance NCCER
1. At what angle is a chain fall usually used?
ANSWER : Vertical
2. A Pipeline P&ID asks for what size the main line is?
ANSWER : 12"
3. What does the P&ID ask for regarding material?
ANSWER : A-335
4. When attaching two pipes together, what fitting is used?
ANSWER : Coupling
5. When attaching two different pipe sizes together, what fitting is used?
ANSWER : Bushing
6. What is a tigger?
ANSWER : Winch
7. What controls water in the towers?
ANSWER : Distributors; internally installed above a packed bed to provide
finite liquid distribution over the bed.
8. What is the minimum rated tie-off point?
ANSWER : 5,000 lbs
9. What causes a kink in a wire sling?
ANSWER : The sling pulling against a support or structure.
, 10.Where is the flame arrester located?
ANSWER : At the handle.
11.All of the following are examples of internal hardware except?
ANSWER : Slide fastener.
12.The fitting that makes it easy to disassemble threaded pipe is?
ANSWER : Union
13.What is the purpose of a gasket?
ANSWER : To create a seal between two stationary parts.
14.What is the first consideration when making a gasket?
ANSWER : Material compatibility.
15.Ring gaskets may be affected by all of the following except?
ANSWER : Number of bolts.
16.Which way should the teeth face on a hacksaw blade?
ANSWER : Away from the handle.
17.What is the pressure of a 1" and a 10" pipe when both are 20' tall?
ANSWER : The pressure is the same for both.
18.What should you do when making a threaded connection and it stops on
the second thread?
ANSWER : Stop; something is wrong.
19.When using a sealing ring on heat exchangers, what material is used to
seal between the floating tube sheet and test ring?
ANSWER : Permatex
20.For duct bolted together, what is usually used between sections?
ANSWER : Gasket
21.If the end of a tube sheet on an exchanger has been smashed, it could be
caused by all of the following except?
ANSWER : Partition plate being too short.
22.Which of the following should be removed when pressure testing a
vessel?
ANSWERS 100% VERIFIED GUARANTEED 2026/2027
BoilerMaker Maintenance NCCER
1. At what angle is a chain fall usually used?
ANSWER : Vertical
2. A Pipeline P&ID asks for what size the main line is?
ANSWER : 12"
3. What does the P&ID ask for regarding material?
ANSWER : A-335
4. When attaching two pipes together, what fitting is used?
ANSWER : Coupling
5. When attaching two different pipe sizes together, what fitting is used?
ANSWER : Bushing
6. What is a tigger?
ANSWER : Winch
7. What controls water in the towers?
ANSWER : Distributors; internally installed above a packed bed to provide
finite liquid distribution over the bed.
8. What is the minimum rated tie-off point?
ANSWER : 5,000 lbs
9. What causes a kink in a wire sling?
ANSWER : The sling pulling against a support or structure.
, 10.Where is the flame arrester located?
ANSWER : At the handle.
11.All of the following are examples of internal hardware except?
ANSWER : Slide fastener.
12.The fitting that makes it easy to disassemble threaded pipe is?
ANSWER : Union
13.What is the purpose of a gasket?
ANSWER : To create a seal between two stationary parts.
14.What is the first consideration when making a gasket?
ANSWER : Material compatibility.
15.Ring gaskets may be affected by all of the following except?
ANSWER : Number of bolts.
16.Which way should the teeth face on a hacksaw blade?
ANSWER : Away from the handle.
17.What is the pressure of a 1" and a 10" pipe when both are 20' tall?
ANSWER : The pressure is the same for both.
18.What should you do when making a threaded connection and it stops on
the second thread?
ANSWER : Stop; something is wrong.
19.When using a sealing ring on heat exchangers, what material is used to
seal between the floating tube sheet and test ring?
ANSWER : Permatex
20.For duct bolted together, what is usually used between sections?
ANSWER : Gasket
21.If the end of a tube sheet on an exchanger has been smashed, it could be
caused by all of the following except?
ANSWER : Partition plate being too short.
22.Which of the following should be removed when pressure testing a
vessel?
