ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Can you use Ammonia in industrial applications?

  • Yes, always
  • Yes, Under certain condidtions
  • When mixed with R-718
  • No, never

2: The Department that certifies the transportation of refrigerant is the

  • EPA
  • DOT
  • EPO
  • RSES

3: Liquid level gauges must be provided with what?

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

4: It shall be the duty of the person in charge of the premises on which a refrigeration system containing more than ___ lbs of refrigerant is installed to provide a schematic drawing or panel giving directions for the operation of the system.

  • 75
  • 55
  • 15
  • 50

5: Name a CFC refrigerant(s):

  • R-11
  • R-12
  • R-123
  • both a & b

6: R-718 is rated unlimited for refrigeration quantity contained in a system. Why?

  • Because it's cheap
  • Because it's a non-flammable refrigerant
  • Because it's water
  • R-718 is not rated unlimited because it's a dangerous refrigerant

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

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

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

  • True
  • False

9: What would be the classification of a church?

  • Industrial
  • Large mercantile
  • Place of assembly
  • Institutional

10: When must refrigeration system covered by the code be inspected?

  • Upon installation
  • Not required
  • Annually and when installed
  • Annually

11: Can a R22 line set be reused for a 410A system and if it can be reused, what must be done to it?

  • Flush with ammonia
  • Flush with R-718
  • Flush with RX-11
  • Flush with R-11

12: What happens after your initial inspection of a pressure vessel?

  • Notify the AHJ to let them know that the system been inspected
  • Inspector leaves a metal tag with a certification listed on it
  • Notify the Fire Marshal that the system has been inspected and approved
  • There is a temporary shut-down until a final inspection can be performed.

13: A hotel is considered a _______ occupancy.

  • commercial
  • residential
  • institutional
  • mercantile

14: According to the 522 CMR Board of Boilers, refrigerant detectors, alarms, and the refrigeration mechanical room ventilating systems shall be tested

  • bi-annually
  • quarterly
  • regularly
  • annually

15: Can ammonia be used on domestic system?

  • no, unless there is proper ventilation system installed
  • yes
  • yes, for systems under 10 tons
  • no

16: Halogenated refrigerants cannot be used with what material?

  • Stainless steel
  • Magnesium alloy
  • Copper
  • Aluminum

17: What is the refrigerant dichlorodifluoromethane?

  • R-22
  • R-123
  • R-12
  • R-134A

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

  • A-2
  • B-1
  • B-2
  • A-1

19: The discharge relief valve is located (9.4.6)

  • between the compressor and reciever
  • between the compressor and oil separator
  • on top of the condensor
  • between the compressor and the stop valve

20: How much refrigerant can be stored in a mechanical room outside of the system?

  • 150
  • 200
  • 330
  • 100

21: When a refrigeration or air conditioning system is installed

  • a field inspection shall be made before it is put into service
  • the form of certificate shall be authorized by the Department of Pubic safety
  • it shall not be operated below prescribed pressures
  • it shall be approved by the owner for proper operation.

22: When a refrigerating machinery room is used, the emergency procedures shall be posted

  • on a conspicuous card located near the compressor
  • inside the room, immediately adjacent to each door
  • outside the room, immediately adjacent to each door
  • on a conspicuous card located near the evaporator

23: What is a Category "M" fluid?

  • A fluid which is nonflammable, nontoxic, not damaging to human tissues, does not exceed 150 psig, and the designed temperature is between -20F to 366F
  • Any fluid that exceeds 150 psig and has design temperatures over 366F
  • A typical refrigerant used on newer air conditioning and heat pump systems
  • A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily content

24: Stop valves shall not be permitted between the system and the

  • service valve
  • relief valve
  • condenser
  • bleed valve

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

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