NCCR Insulation Practice Test

These questions are part of the practice quiz. Start practicing

• What must be done to a surface before pins are welded?
• What is "continuous insulation" (CI) as defined in energy codes and why is it beneficial?
• How do you treat rim joists in a conditioned attic to prevent heat loss and air leakage?
• Which statement regarding energy-related benefits of cellulose insulation is true?
• Piping operating below ambient temperature must be vapor sealed.
• What is the height of the ventilation duct in feet?
• What will an insulator normally do when starting to insulate piping?
• Which statement best describes R-value?
• In a double-layer insulation configuration, if the first layer is 6" x 2", what top layer size is used to reach 6" x 4"?
• What does R-value represent in insulation performance?
• What is the inside diameter listed for a 10-inch insulation pipe covering?
• How long is the ventilation duct in feet?
• U-factor is related to R-value how?
• Which of the following is used to secure box rib lagging to equipment?
• Thermal bridging occurs when which of the following creates low-resistance paths through insulation?
• Unless otherwise specified, longitudinal laps on jacketing should be in what position?
• For insulating a vessel or tank with calcium silicate, at what length should you start the stagger?
• In cold climates, where is a vapor barrier typically placed in wall assemblies?
• A drawing scaled 1/8 inch = 1 foot and the distance on the drawing measures 3 inches. How many feet does it represent?
• What tool should be used to cut metal lath or chicken wire mesh
• What is the impact of insulation on HVAC sizing and energy consumption?
• How many three-foot sections are required to insulate 35 feet of straight pipe?
• What type of tape is used to wrap steam tracing lines?
• What is the first step in the recommended order of operations when upgrading insulation in a wall assembly?
• If the insulation thickness is 2 inches, what should the flange overlap distance be?
• What is the difference between a vapor retarder and a vapor barrier?
• What is the minimum capacity required for a lanyard anchoring point?
• To determine metal jacketing stretch-out length, you multiply the diameter by which constant and add how many inches?
• In which location are radiant barriers typically installed?
• Which of the following is a clear sign of moisture-related insulation failure?
• Which statement about spray polyurethane foam (SPF) safety is correct?
• In the sequence, which step comes directly before installing insulation?
• What thickness of foamglass is specified to cap the bonnet on a cold service valve insulation?
• What is a practical benefit of using double top plates in wood-framed walls?
• What should be used to insulate single traced piping?
• Which jacketing finish is NOT commonly used for the jacketing in large diameter vessels?
• Mineral wool is used for
• Among common insulation materials, which has the highest typical R-value per inch?
• Which of the following is a primary hazard when handling foam glass?
• How does humidity affect insulation performance?
• What is thermal bridging and how does exterior insulation mitigate it?
• What is the inside diameter listed for a 10-inch insulation pipe covering?
• What is the ASTM standard commonly used to evaluate flame spread and smoke development of insulation materials?
• Which two strategies are commonly used to reduce thermal bridging in wood-framed walls?
• What installation issue can cause attic insulation to become ineffective due to ventilation problems?
• Which statement best describes how flange overlap is determined relative to insulation thickness?
• How do you calculate overall U-factor for a multi-layer wall?
• Which insulation material is used for cold vessels?
• Who, other than the person authorized, may remove the tag or lock placed on a piece of equipment?
• Which insulation type is known for high fire resistance and compressive strength and can be used in exterior assemblies?
• Which shop tool would be used to cut insulation?
• XPS typically has an R-value per inch of about
• Jacketing around pipe bends or sweeps would require which component?
• What is the BEST source of information about safety hazards related to material disposal?
• Leftover materials in walkway indicate unsafe condition
• The MOST important aspect of installing the first course of jacketing on a vertical vessel is that it MUST be
• Manway covers and exchanger heads may be covered with jacketing material by the combined use of an end cap with which seam?
• Pistol grip banders are used to
• Center to center of welds is used to locate miters on what component?
• An insulator, inspecting the work area finds materials left in the walk way on the work platform. These materials represent:
• What type of insulation is used on boilers?
• What should be used to cap the bonnet on a cold service valve insulation with 3 in thick foamglass?
• Who is allowed to remove the tag or lock placed on equipment, aside from the authorized person?
• If a rectangle is 22 feet long and 15 feet 6 inches high, its area is approximately which of the following?
• Which statement best describes the role of an air barrier in a building envelope?
• Why is it important to install baffles in the attic when insulating above the ceiling?
• Where should a bevel cap be used?
• What is a blower door test and what is measured?
• What does SDS stand for in safety data documentation?
• Open-cell spray foam vs closed-cell spray foam: which statement is true?
• What item is commonly used to temporarily secure insulation in place?
• Which item helps prevent water intrusion in insulated assemblies when fastened to sheet metal and lagging?
• Which two pieces of information are needed before laying out a tee?
• What are common installation mistakes that undermine insulation performance in attics?
• Which component should be installed after sealing air leaks but before installing insulation?
• What is the width of the ventilation duct in feet?
• If a ladder is 16 feet tall, what is the correct base distance from the structure?
• Which statement best describes the binding process for contact adhesives due to their initial bonding capabilities?
• What type of insulation should be used on a cold vessel?
• Any piping that operates at a temperature lower than ambient air must be
• Air leaks affect insulation by
• A pin welder is used to?
• What decimal value is 3 feet 6 inches expressed as in feet?
• One step required in the take off when a head gore is laid out is to
• For heat traced piping, the insulation pipe cover is typically one size smaller than the pipe size.
• What type of staple gun is used to secure insulation jackets and facings?
• In the metalizing process for a valve, which action is performed last?
• Which method determines head gore length?
• Which of the following best describes an environmental performance benefit of cellulose insulation when installed properly?
• What should the top of ducks or equipment that are subject to foot traffic be insulated with?
• Due to their strong initial bonding capabilities, contact adhesives ________
• When beginning to insulate piping, you should do what?
• Which statement best describes window performance in reducing glazing heat gain?
• If the insulation thickness is 1 inch, what should the flange overlap distance be?
• Which value is the radius of a circle with an 8-foot diameter?
• Which practice most directly contributes to airtightness when installing cellulose insulation?
• What is STC and IIC in insulation and sound specs, and how can insulation influence them?
• What safety precaution should insulators take when mixing hydraulic setting cement?
• What practice helps prevent ice damming when insulating above the ceiling?
• Cellulose insulation can contribute to airtightness when installed correctly; which practice enhances this benefit?
• What size pipe insulation is required to insulate the line flange of 12 inch IPS iron pipe?
• What is the square foot area of the ventilation duct described as 32 feet long, 4 feet wide, and 3 feet 6 inches high, assumed open-ended and insulated?
• Which stapling configuration is used to secure insulation jackets and facings?
• Subgirts gauge range: which is correct?
• Define "R-value per inch" and how it informs selection for different climates?
• Sodium silicate-based adhesive CP-97 is used for fabricating fitting covers with which material?
• Neoprene washers are used with sheet metal and lagging to provide
• Which statement best describes the purpose of fab cloth in mastic applications?
• What is the purpose of foil-faced insulation boards and where should they be used?
• Which tool is used to attach insulation pins to a surface during insulation installation?
• Flange overlap should be placed at what distance relative to insulation thickness?
• Convert 1970 square inches to square feet.
• Explain the difference between batt insulation installation methods and where each is typically used.
• Dew point-related condensation risk can be mitigated by
• What is the last step in metalizing a valve?
• Longitudinal laps on jacketing are typically placed at which clock position?
• Which statement describes a sustainability advantage of cellulose insulation?
• What information is needed before a tee is laid out?
• During insulation installation, the pin welder's primary function is to attach insulation pins to the surface.
• What action should be completed before installing the mastic cap on cold service insulation?
• How much crimp would normally be put on a metal bevel for a 10" x 2" insulation?
• If the distance across a tank is 8 feet, what is the radius?
• Mineral wool is preferred over fiberglass in which scenario?
• Attic ventilation's role in insulation performance includes
• Mastic is normally used for what purpose?
• What is the square foot area of a rectangle measuring 22'0" in length and 15'6" in height?
• Wooder skewers are typically used for which purpose?
• How does blowing agent choice in spray foams affect environmental impact and R-value?
• How do you select insulation for foundations and basements to minimize moisture and heat loss?
• The length of a head gore can be determined by
• The technique an insulator uses to lay out a flange jacket should also be used to lay out which component?
• What is the minimum distance between the foot of a ladder and the base of the structure it's leaning against?
• What are the main differences among fiberglass batts, mineral wool boards, and cellulose loose-fill in terms of installation and performance?
• Which seam is used when combining an end cap with jacket material to cover manway covers and exchanger heads?
• Describe how to avoid compression of batt insulation during installation and why it matters.
• What is the square foot area of a rectangle measuring 22 feet in length and 15 feet 6 inches in height?
• Which attribute is a sustainability advantage of cellulose insulation?
• Which step comes after installing insulation in the sequence?
• Which measurement describes the inside dimension of the pipe covering when given as 3 inches by 1/2 inch?
• Vapor stops are commonly installed at expansion joints, valve joints, and insulation joints. Which location is NOT a typical place to install vapor stops?
• Subgirts are usually fabricated from which range of gauge metal sheets?
• Why is exterior insulation considered when building retrofit for existing buildings?
• What is the purpose of a continuous exterior insulation (CEI) layer?
• What is required to be in place on all stationary power tools?
• Why is 'fab' cloth used in mastic job?
• Which type of vessel or equipment jacketing material provides resistance to fire or caustic environments?
• Box rib lagging should be secured to equipment with which size self tapping screws?
• Which tool is used to make watertight seams when installing sheet metal lagging on flat sheets or complex shapes?
• Single traced piping insulation should be sized as
• What material is used to fill gaps in hot-service calcium silicate insulation?
• What is the primary purpose of a vapor barrier in cold climates?
• Jacketing used on a pipe bend or sweep would require
• What is glazing heat gain and how does insulation interact with windows?
• In what application is 1 1/4 in corrugated metal used?
• Which of the following is a common use of rubber bands made from inner tubes?
• Ice damming occurs when roof heat causes snow to melt and refreeze at the eaves. How can insulation help prevent damming?
• What is the primary hazard of working with foam glass?
• Pistol grip banders are used to
• Which factor most directly affects heat transfer through a multi-layer wall?
• In a take-off for head gore, which measurement is essential to determine the piece size?
• 3/4 in IPS pipe insulation will also fit copper tubing with a nominal size of what?
• Sodium silicate-based adhesive CP-97 is used to fabricate fitting covers for which material?
• Name three tests or standards used to evaluate insulation performance in buildings.
• Which option appears as a non-technical answer in the list, effectively a prompt to guess?
• What is the function of a radiant barrier and in which climate is it most effective?
• What size of insulation goes on top of double layer to make 6" x 4" if the first layer is 6" x 2"?
• In the ventilation duct scenario, what assumption is made about the ends of the duct?
• Which step is performed first in the sequence?
• What is the approximate inside measurement of a calcium silicate pipe covering labeled 3 inches by 1/2 inch?
• When sawing insulation material, the insulator should use which of the following?
• What type of layout is depicted?
• What is the purpose of air sealing tapes and sealants in the building envelope?
• Which is the best way to verify flatness when starting installation on vertical vessel?
• Open-cell spray foam density is approximately
• What is ACH50 and why is it important in insulation practice?
• For surfaces subject to foot traffic, which insulation form is specified?
• Where are miters started on a welded elbow?
• What results from compressing batt insulation?
• Which action best ensures the energy and safety benefits of cellulose insulation are realized?
• What is the sum of 140, 80, and 30?
• Why is it important to use a capillary break and moisture barrier in foundation insulation?
• Unless otherwise specified, valves and flanges on cold services insulation should be installed
• Which statement best explains the relationship between R-value and U-factor in wall assemblies?
• Assuming an iron pipe IPS size of 12 inches, what insulation size is required for insulating the line flange?
• What is an air barrier and how does it differ from a vapor barrier?
• In roof assemblies, what is the role of foil-faced insulation boards?
• Which step in the sequence comes after installing insulation and before finishing the interior?
• Without proper coating or ignition barrier, what hazard can SPF pose?
• How do you determine the appropriate thickness of insulation for a climate zone?
• In a sequence of items, what is the third entry described as?
• What health and safety considerations when handling fiberglass or mineral wool insulation?
• For heat traced piping, insulation pipe cover is typically
• What is the R-value per inch range for cellulose insulation?