ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

  • EPA
  • EPO
  • DOT
  • RSES

2: Pressure vessels nameplate markings must be compliant with the

  • ASHRAE 34 Standards
  • CMR-588 & CMR-528
  • ASME Boiler and Pressure Vessel Code
  • All of the Above

3: How many refrigerant classifications are there for toxicity?

  • 2
  • 1
  • 3
  • 5

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

5: Direct systems using Group II refrigerants

  • shall be installed per instruction of the AHJ
  • shall not be used for air condition for human comfort
  • shall be allowed to be used for human comfort.
  • shall be installed in Class T machinery rooms

6: 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

7: What is a Category "M" fluid?

  • 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
  • Any fluid that exceeds 150 psig and has design temperatures over 366F
  • 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

8: Large vessels containing refrigerant ______________________ from using two or more pressure-relief devices in parallel to obtain the required capacity.

  • shall be prohibited
  • of Group B2 refrigerant shall be prohibited
  • shall not be prohibited
  • containing R-11, R-123 & R-717 exclusively shall not be prohibited

9: R-11 belongs to Group

  • B-3
  • A-1
  • A-2
  • B-1

10: Large Mercantile occupancy is a premise or that portion of a premise where more than ____ persons congregate on levels above or below the street level to purchase personal merchandise.

  • 400
  • 100
  • 350
  • 250

11: When a refrigeration or air conditioning system is installed

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

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

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

13: Relief valves are rated in

  • pounds of air per hour
  • gallons of water per minute
  • gallons of water per hour
  • pounds of air per minute

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

  • 600F
  • 800F
  • 700F
  • 1000F

15: Pressure vessels with an internal volume of 3 cubic feet or less

  • shall use pressure relief devices
  • shall use pressure relief devices or fusible plugs
  • shall use fusible plugs
  • do not need pressure relief protection

16: All electrical work done on refrigeration systems must comply with

  • Department of Energy
  • OSHA
  • NEC and Massachusetts Modifications
  • ASHREA-15 Section 9.2.1

17: Pressure vessels with an internal volume of 10 cubic feet or more

  • shall use rupture discs or duel pressure relief valves
  • shall use fusible plugs
  • shall use pressure relief devices or fusible plugs
  • shall use pressure relief devices

18: The gauge thickness required on a CO2 tank construction is

  • 3/32"
  • 1/8"
  • 1/16"
  • 5/16"

19: When testing systems using non-positive displacement compressors, the entire system shall be considered for test purposes as the low side.

  • True
  • False

20: Pipe identification labels are required when the system contains more than

  • 65 lbs
  • 120 lbs
  • 110 lbs
  • 55 lbs

21: A relief valve discharge capacity is rated in

  • Pounds of air per minute.
  • PSIG
  • PSIA
  • temperature minus pounds of air per second divided by release rate squared

22: The test pressure applied to the high side of each factory-assembled refrigerating system shall be at least equal to the design pressure of

  • the high side
  • the low side
  • 2.5 times the design pressure
  • the aggregate of the high side and low side

23: Class 3 refrigerants are

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

24: R-717 is

  • trichloromethane
  • water
  • ammonia
  • carbon dioxide

25: Each machinery room shall contain

  • a toxicity detector where the presence of ammonia or lithium bromide from a leak will concentrate
  • smoke and fire alarms as well as three means of egress and that egress must meet 528 CMR ventilation requirements
  • a refrigerant detector located in an area where the refrigerant from a leak will concentrate
  • high and low pressure controls