ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Name an HCFC refrigerant(s):

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

2: A room having machinery but no flame producing apparatus permanently installed and operated is considered a

  • Class A machinery room
  • Class B machinery room
  • Class T machinery room
  • Class M machinery room

3: R-123 belongs to Group

  • B-2
  • B-1
  • A-3
  • B-3

4: Joints in piping for refrigeration containing parts must withstand temperatures of ___?

  • 800F
  • 600F
  • 1000F
  • 700F

5: Which refrigerant class listed below is the most flammable?

  • B-2
  • A-1
  • A-3
  • C-3

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

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

7: What do you need to do when you install a new system?

  • Add refrigerant
  • Insulate the suction line before you take a superheat reading
  • Document the superheat and subcooling reading
  • Have it inspected

8: A movie theater would be considered a

  • institutional occupancy
  • commercial occupancy
  • mixed occupancy
  • public assembly occupancy

9: How many groups of refrigerants are there?

  • 7
  • 3
  • 5
  • 1

10: According to ASHRAE Standard-15 9.8 Positive Displacement Compressor Protection, the pressure-relief device discharge into

  • the low-pressure side of the system
  • the high side of the system
  • the liquid receiver
  • both a and c are correct

11: copper and its alloys shall not be used in contact with _____ except as a component of bronze alloys for bearing or other non-refrigerant containing uses.

  • CFC-11
  • HCFC-123
  • ammonia
  • Lithium bromide

12: What is an example of institutional occupancy?

  • Hospital
  • Dorms
  • Football stadium
  • Shopping mall

13: Liquid level gauge glasses shall have automatic closing shut off valves, except Bull's eye or reflex type.

  • True
  • False

14: Class A refrigerants are considered

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

15: A class B1 refrigerant is considered

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

16: The color code of a tank of ammonia is

  • lavender
  • white
  • light green
  • silver

17: What section of ASHRAE-15 governs pressure vessels?

  • Section 7 ASHRAE-15 ASME VIII fired
  • Section 6 ASHRAE-34 ASME VIII unfired
  • OSHA
  • Section 9 ASHRAE-15 ASME VIII unfired

18: Ammonia belongs to Group

  • A-1
  • B-2
  • B-1
  • A-2

19: What is the minimum height refrigeration piping should be placed against walls?

  • 72"
  • Ceiling height
  • 6'
  • 7.25'

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

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

21: Which refrigerant class listed below is the most flammable?

  • A2
  • C3
  • B2
  • A3

22: Liquid level gauges must be provided with what?

  • A red line
  • A relief valve
  • A low level mark
  • Automatic shut-offs

23: 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

24: A factory-sealed system containing less than 22lbs. of Group A1 refrigerant

  • does not require a pressure-limiting device
  • shall have a pressure limiting device and a pressure relief valve installed
  • shall be inspected by the Boiler of Inspectors bi-annually
  • shall have a pressure limiting device installed on the high side of the system

25: All welding done on any refrigeration system or piping covered by 522 CMR 9.00 shall be performed by a according to Section IX of the ASME code

  • welder qualified
  • licensed technician
  • competent welder
  • licensed welder