Prepare for the NCCER Boilermaker certification exam with these practice questions and answers. This guide covers boiler systems, welding, rigging, tube installation, and safety procedures.
Q: Advanced steam boilers can operate at temperaturesas high a s _____ degrees.
Answer: 1,150
Q: One way of identifying insulation that maycontain asbestos is through_____.
Answer: testing by qualified person
Q: Supercritical boilers can operate at pressuresas high as_____psi.
Answer: 4,500
Q: The hazards associated with hot work performedon areas coated with lead-based paintare minimized in the workplace b y _____.
Answer: performing an area survey prior to performingcutting or grinding operations
Q: Grinding operations inside a boiler presentan explosion hazard due to _____.
Answer: combustible gases
Q: The weight of an object to be lifted should notexceed the_____of the lifting equipment.
Answer: safe working load
Q: The term that means asbestos insulation iseasily crumbled into fibers that become airborneis _____.
Answer: friability
Q: One of the places on a boiler where asbestosmay be found is _______ .
Answer: door seals
Q: Before entering a confined space, a workershould_____.
Answer: inspect the space’s shoring and support
Q: A boilermaker working at extreme heightsmust follow safety precautions not only toprevent falls but also to prevent causing ________
Answer: injury to personnel working below fromfalling objects
Q: When welding with shielding gas, extra ventilationis needed due to the fact that the gasused______.
Answer: is heavier than air and collects in low areas
Q: When working at heights,_____must beworn.
Answer: a safety hamess
Q: Suspended scaffolds are particularly usefulwhen working on_____.
Answer: boiler interiors
Q: At the beginning of a shift, boilermakers arenormally given a _____.
Answer: safety briefing
Q: Cutting metals inside a boiler presents anadded hazard due to _____ .
Answer: combustion residue fumes
Q: A material that can maintain its strength at a high temperature is called _______.
Answer: Lagging
Q: An insulating material that easily crumbles into fibers and may become airborne is said to havethe______characteristic.
Answer: Friability
Q: A buildup of solid combustion byproducts in a boiler is called _______.
Answer: Combustion Residue
Q: Using braces to ensure integrity of a confined space is called _______
Answer: Shoring
Q: An area that is large enough to work in but has limited means of entry or exit is considered a _______.
Answer: Confined Space
Q: A sheet metal covering used for protection is called______.
Answer: Refractory
Q: When using cutting tools, always____ .
Answer: wear safety glasses
Q: A pipe wrench that is too small will_____.
Answer: not hold the pipe firmly
Q: Larger sizes of pipe should be held using a(n) ______.
Answer: chain vise
Q: A torpedo level differs from a framing levelin that it_____.
Answer: is shorter
Q: The protractor head on a combination squareis used to _____.
Answer: lay out various angles
Q: The device used to hold a pipe flange onto apipe for welding is known as a(n)_____.
Answer: flange welding clamp
Q: A Hi-Lo gauge is used to_____.
Answer: check for pipe joint misalignment
Q: When using a hacksaw, the finest cut can beachieved when using a ____ .
Answer: 32 blade pitch
Q: The device used to remove a broken piece ofpipe or fitting is known as a(n)____ .
Answer: easy-out
Q: The device used to cut internal threads on aplate is known as a(n)____ .
Answer: pipe tap
Q: The device that allows multiple pneumatictools to be operated from the same compressoris known as a ______ .
Answer: manifold
Q: The pneumatic power tool used to lift andmove heavy loads is known as a(n)_____.
Answer: tugger
Q: At many work sites, the proper voltage is notavailable to power all tools. To correct theproblem, use a _____.
Answer: step-down transformer
Q: The device used when a perfectly perpendicularhole must be drilled into a surface isknown as a(n) ______.
Answer: magnetic base drill
Q: The hydraulic tool used to reposition parts orlift heavy objects short distances is known as a_____.
Answer: porta-power
Q: A machine that receives its power from liquid pressure is said to be
Answer: Hydraulic
Q: A device that allows a tool to rotate in only one direction is a(n)__
Answer: Ratchet
Q: A pneumatic winch used to move heavy objects is a(n)______.
Answer: Tugger
Q: A ( n )_______is a sharp, ragged edge of metal.
Answer: Burr
Q: The width of a circle is called the______ .
Answer: Diameter
Q: To line up two or more parts is to______ them.
Answer: Align
Q: The part of a tool that allows different attachments to be used with it is the ______.
Answer: Collet
Q: The saw that is guided by a track in order to make straight cuts is a(n)___ _
Answer: Panel saw
Q: A tool used to make male threads on a pipe is called a(n)______ .
Answer: Die
Q: A device used to expand boiler tubes from the inside is a(n)______
Answer: Tube roller/expander
Q: A device used to join several piping or tubing runs is a(n)_______ .
Answer: Manifold,
Q: The tool used to determine the number of threads per inch on a bolt or pipe is a(n) _________
Answer: Thread gauge
Q: A handheld device used to grind metal is a(n) _______.
Answer: Die grinder
Q: A tool that is powered by compressed air is a(n)______ tool.
Answer: Pneumatic
Q: A tool commonly used to prepare pipe ends for welding is a(n)______________
Answer: Tube beveler
Q: A material made by combining carbon and metal is ______ .
Answer: Carbide
Q: To prevent fume hazards, there must be atleast_____cubic feet of air for each welder.
Answer: 10,000
Q: A good safety practice is _____|
Answer: writing HOT on hot metal before leaving
Q: Cutting operations should never be performedwithout a _____ in the area.
Answer: fire watch
Q: When pure oxygen is combined with fuelgases, the pure oxygen produces_____|
Answer: a high-temperature flame needed forflame cutting
Q: The smallest standard oxygen cylinder holdsabout_____cubic feet of oxygen.
Answer: 85
Q: Acetylene gas must be withdrawn from a cylinderat an hourly rate that does not exceed _______percent of the cylinder capacity.
Answer: 10
Q: Safety fuse plugs in the top and bottom of anacetylene cylinder are designed to_____.
Answer: release acetylene gas in the event of a fire
Q: Methyl acetylene propadiene (MAPP*) gas, aliquefied fuel used in oxyfuel cutting, bumsat temperatures almost as high as acetyleneand has the stability of_____.
Answer: propane
Q: The amount of liquefied gas remaining in acylinder is determined by the _____of thecylinder.
Answer: weight
Q: The regulators used on fuel gas cylinders areoften painted red and always have_____ona 11 connections.
Answer: left-hand threads
Q: The attachment on the top of a fuel gas cylinderthat allows the gas to flow only in onedirection is called a _______.
Answer: check valve
Q: The cutting tips used with liquefied fuelgases must have at least_____preheat holes.
Answer: six
Q: When lifting oxyfuel cutting cylinders, alwaysuse a(n)_____ .
Answer: cylinder cage
Q: To avoid injury from dirt that may be lodgedin the valve and regulator seat of a gas cylinder,always stand _____the valve whenopening the valve to clear the regulator seat.
Answer: to the side of
Q: When clearing debris from new oxyfuel cuttingequipment hoses, blow the hoses outwith_____.
Answer: nitrogen
Q: The first step in selecting a cutting tip is to ______.
Answer: identify the thickness of the material to becut
Q: Before opening cylinder valves, verify thatthe adjusting screws on the oxygen and fuelgas regulators a re_____ .
Answer: loose
Q: When a cutting flame has an excess of fuel,the flame is called a(n)_____ flame.
Answer: carburizing
Q: When disassembling oxyfuel equipment, verifythat all pressure gauges read_____ beforestarting to take the equipment apart.
Answer: 0
Q: When inspecting a completed cut made withoxyfuel cutting equipment, the drag lines ofthe cut should be n e a r_____ and not verypronounced.
Answer: vertical
Q: The gap produced by a cutting process is called a(n)______
Answer: Kerf
Q: A loud snap or pop as a torch flame is extinguished is called a(n) _______
Answer: Backfire
Q: The soft, white material used to mark metal IS _____
Answer: Soapstone
Q: A flame burning with too much fuel is called ______
Answer: Carburizing flame
Q: A flame burning with too much oxygen is called_____.
Answer: Oxidizing flame
Q: When correct portions of fuel gas and oxygen are fed to a flame, the flame is said to be a(n) ______
Answer: Neutral flame
Q: When a thermal process is used for cutting, the material expelled from the kerf is called _______.
Answer: Dross
Q: When a flame burning back into the tip of a torch causes a high-pitched whistling sound condition is called ___________.
Answer: Flashback
Q: When metal plate is penetrated with an oxyfuel cutting torch, the action is called a(n)___
Answer: pierce
Q: On the edge of a cut, the lines resulting from the cutting oxygen steam into, through, and out ofthe metal are called______ .
Answer: Drag lines