ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: How many flammability classifications are refrigerants in?

  • 3
  • 5
  • 7
  • 2

2: R-22 is classified as a ____ refrigerant on the safety matrix.

  • B-1
  • A-2
  • B-2
  • A-1

3: Refrigerants shall be classified by

  • color codes
  • toxicity and flammability
  • maximum permissible quantities of each group
  • requirements for commercial, industrial, and residential occupancies

4: A plug containing an alloy that will melt at a specific temperature to relief pressure is a

  • fusion plug
  • fusible plug
  • relief plug
  • rupture plug

5: Group A3 refrigerants have a ______ flammability rating than Group B1 refrigerants

  • higher
  • there is no Group B1 refrigerants
  • the same
  • lower

6: Where a refrigeration or air conditioning system is installed,

  • A field inspection shall be made before it is put into service
  • The company who installed the system must notify the fire department in the jurisdiction where installed
  • it shall not be operated below prescribed pressuers
  • the form or certificate shall be authorized by the Department of Public Safety

7: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within

  • 2 months
  • 1 week
  • 14 days
  • 30 days

8: Class A refrigerants are considered

  • flammable
  • non-flammable
  • toxic
  • non-toxic

9: A pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.

  • 50
  • 25
  • 66
  • 22

10: What is an example of institutional occupancy?

  • Shopping mall
  • Dorms
  • Hospital
  • Football stadium

11: Name an HCFC refrigerant(s):

  • R-22
  • R-123
  • R-11
  • both a & b

12: Systems containing more than 110 pounds must have stop valves located at the

  • compressor suction inlet
  • compressor discharge outlet
  • receiver inlet and outlet
  • All of the above

13: Liquid shall not occupy more than ____ of the volume when the temperature of the refrigerant is 90F.

  • 80%
  • 90%
  • 100%
  • 75%

14: What must be done to refrigerant pipes before being buried?

  • Encased
  • Coated
  • Leaked checked
  • Certified

15: Pressure vessel having an inside diameter exceeding 6” with an internal pressure greater than 15psig shall be marked directly on or on the nameplate the letters _______________ signifying compliance with the ASME Boiler & Pressure Vessel Code.

  • “U” or “UM”
  • “UV”
  • “UL”
  • “UM” and “UV”

16: Who is permitted to access a refrigeration machine room?

  • Any employee
  • Authorized persons only
  • Contractors only
  • Anyone, it's a completely safe area

17: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed

  • 500 lbs
  • 660 lbs
  • 55 lbs
  • 330 lbs

18: The dial of a pressure gauge, when installed on the high side of a system be graduated 1.2 times the designed pressure.

  • True
  • False

19: Ammonia can come in contact with _______ ?

  • Aluminum
  • Copper
  • Brass
  • Copper tubing

20: The main cause of enacting the "no vending rule" of July 1st 1992 was

  • global warming potential
  • ozone depletion
  • both a & b
  • None of the above

21: Where must a refrigeration contractor's license number be displayed?

  • Uniforms, checks, and invoices.
  • Truck, office, every job, and on all equipment
  • Trucks, license plates, and uniforms
  • Trucks, invoices, and advertising

22: What would be the classification for Stop & Shop grocery store?

  • Instituional
  • Large mercantile
  • Industrial
  • Place of assembly

23: Who authorizes changes to the safety codes?

  • Person who pulled the permit
  • Contractor who last serviced the system.
  • Person in charge of the facility
  • Board of Boilers

24: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.

  • 33
  • 22
  • 50
  • 18

25: A class B2 refrigerant is considered

  • toxic and non-flammable
  • non-toxic and non-flammable
  • toxic and somewhat flammable
  • non-toxic and highly flammable