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NCCER BOILERMAKER MAINTENANCE EXAM
2024 - 2025 WITH ACTUAL CORRECT QUESTIONS
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Which of the following tools is used to shape a tube to fit a penetration Tube roller Which of the following is a typical characteristic of a yoke vice They are hinged to open vertically Insulation should be assumed to be asbestos if It is not marked otherwise Plumb means Vertically aligned In the top and bottom of an acetylene cylinder are safety plugs with a melting point of 220 degrees A gasket that has holes is a Full face gasket To get an accurate reading level between 2 distance points Tubing water level A cutting flame that has an excess of oxygen is called an oxidizing flame Most common tray
Value tray Spool drawings One piece of pipe only Which organization requires a person to be trained to operate personal lifting equipment OSHA Where would the usage of a RTJ Gasket be found high pressure system All of the following are examples of internal manway hardware except Slide fastener The fitting that makes it easy to dissemble threaded pipe is Union What type of wrench measures how much a fastener is being tightened Torque What is the purpose of a gasket? to create a seal between 2 stationary parts What is the first consideration when making a gasket material compatibility In order to get the bundle to line up with the shell side gasket the best tool to use to lift the bundle is a drift pin ring gaskets may be affected by all of the following except Number of bolts Which way should the teeth face on a hacksaw blade Away from handle Pressure of a 1" and 10" pipe when both are 20" tall The pressure is both the same When making a threaded connection and it stops on 2nd thread.... Stop, something is wrong When using a sealing ring on heat exchanger, what material is used to seal off in between the floating tube sheet and test ring?
On a variable can (spring can) support, when are the load straps removed Just prior to energizing the system When rigging a valve the spring should be placed around the body Minimum required oxygen and fuel gas storage separation when not in use and stored in open areas 20' When tightening up a manway or tower that has 1 1/4" x 8" stud bolts, what size wrench should you use 2" What should a worker do before removing flange bolts on the exchanger channel head verify blinds are in, bleeders are open, and loto is complete What does NPT stand for? National Pipe Thread Flange protector should be removed from the valve when ready for installation Which sling configuration has the greatest capacity basket Tube sheet To pull a bundle from the shell the eye bolts should be installed on the What is the standard pipe thread used in the USA NPT What type of metal would an oxyfuel torch be used to cut carbon steel When doing hydrostatic where should the gauge be installed in the system highest point All of the following would be reasons for rejecting a sling except ID tag on the wrong side Which of the special markings on the head of a bolt can be used to determine the quality of the fastener grade What type of tray had a flat perforated with a riser of chimney fitted over each
bubble What type of bolt can be used as a lifting device eye bolt To help control a load install a Tag line What is the first step when cutting a gasket Verify proper material According to osha the fall protection tie off point must have a minimum rating of 5000 lbs All of the following are standard methods for thread identification except Packing series symbol When plugging a straight tube exchanger in the shell all of the following heads need to be removed except Tub head Under which circumstances are the shell and tube side pressurized at the same time When performing a differential hydro test Where can an exchangers operating pressure be found On the name plate When blinding a tower it is common practice to install blinds As close as possible to the tower The correct tool to remove a broken pipe nipple is Easy out head pressure testing is used on what type of system gravity flow 3 basic type of hitches Basket, choker, vertical In an oxyfuel cutting torch system what color code are the flashback arrestors Red & Green Valves controlled by electric, pneumatic, or hydraulic actuators are called
What is the major component of a tower Down comer Best rigging material to lift coated pipe Nylon slings/ straps A channel head cover on an exchanger is used on the? Tube side What type of purge is used to remove catalyst from a reactor Nitrogen Why should boilermakers crack the cylinder valve before connecting the regulator to the oxyacetylene cylinder To clean the cylinder valve of foreign matter How many people can tie off to a vertical lifeline 1 Where should the wire plate be installed Top of the trays What can replace a shackle pin Nothing What are lifting lugs Eyelets welded to a steel plate for lifting What is dog plate used for Buffers to align vertical plates What is the proper way to attatchl 2 slings together Shackle What characteristic must be checked before a gasket is installed Material How should you determine the proper size gasket should be put in a set of flanges Size and rating stamped on flange Where can the pass partition of an exchanger be found Channel head
The most commonly used wrench size for tray work is 9/ Most common rigging hardware Eye bolts At what angle is a chain fall usually used? Vertical Pipeline PNID ask for what size the main line is 12" What does the PNID ask for material A- 335 When attaching two pipes together what fitting is used? Coupling When attaching two different pipe sizes together what fitting is used? Bushing What is a tigger? Winch What controls water in the towers? (Distributors) internally installed above a packed bed. Which performs the job in providing a finite liquid distribution over the packed bed. What is the minimum rated tie off point? 5,000lbs What causes a kink in a wire sling? Sling against a support/structure Where is the flame arrester located? At the handle All of the following are examples of the internal many hardware except? Slide fastener The fitting that makes it easy to disassemble threaded pipe is? Union
Bottom right corner Taps are used to cut what type of threads? Internal Oxyfuel torch what valve must be turned off first? Acetylene What does SWL stand for? Safe working load When tighten up a manway or tower that has 1" 1/4 by 8" stud bolts what size wrench should you use? 2" What valve can start and stop without regulating flow? Gate valve What valve can start & stop & WILL regulate flow? Globe valve What valve can be placed with out directional flow? Gate valve If crane booms up the load will? Go up and towards the crane If crane booms down the load will? Go down and away from crane How to you plug up exchanger tubes? Pop-A-Plug When making a Pipe thread connection where should you apply liquid lubricant? Male threads When making a tight close seal on a threaded pipe which wrench should you use? Pipe Wrench When is it allowed for the load not to have a tag line? Both OSHA and industry standards require the use of taglines unless the load configuration and weather conditions are such that load control is not needed What does packing do for the valve stem?
Stop it from leaking What is the safest way to light an oxy acetylene? Friction starter When sealing an exchanger tube how do you seal it? Pop-A-Plug How do you use two straps together? Shackle What way will the shackle bolt face when rigged with 4 slings? Bolt down What is a combination square (Picture) If you were needing to make a repair on a "U"tube bundle what needs to be removed? Dollar Plate What components are attached to the baffle on an exchanger tube bundle? Tie Rods In order to get the bundle to line up with the shell side gasket the best tool to use to lift the bundle is a? Drift Pin How far should a screw eye bolt be screwed in so it's properly seated? All the way in Pack beds are bound in all of the following except for? Furnaces What do baffles do for an exchanger bundle? Support the tubs during assembly and operations and help prevent vibration from flow-induced eddies What is the proper way to place a pin in a shackle? All the way and back it out a hair How should a gasket face when using nubbin? Smooth side towards the nubbin What is the purpose for nubbin? Predominately machined into a heat exchanger flange to create a high stress to produce a tighter seal
