ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: What kind of material can't be used on the outlet of a relief valve?

  • Stainless Steel
  • Copper
  • Aluminum
  • PVC

2: When releasing a hydrogenated hydrocarbon refrigerant to the atmosphere, ample ventilation must be provided and

  • no flames shall be permitted
  • gas masks must be worn
  • explosion precautions must be taken
  • the owner shall be informed

3: Joints in refrigeration piping must be _____ before being covered?

  • Inspected
  • Leak tested
  • Insulated
  • Pressurized

4: An evaporator coil located near heating coil shall have a pressure-relief device installed within ______ inches of the evaporator.

  • 24
  • 36
  • 48
  • 18

5: What section governs pressure vessels?

  • Section ASHREA 34
  • Section 8 ASHREA 15 ASME unfired
  • Section 1 ASHREA 15 ASME fired
  • OSHA

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

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

7: 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 installed on the high side of the system
  • shall have a pressure limiting device and a pressure relief valve installed
  • shall be inspected by the Boiler of Inspectors bi-annually

8: Pressure vessels having design pressures of 15 psig or less shall have the strength to withstand at least ______times the design pressure.

  • 2.5
  • 5.5
  • 2.0
  • 3.0

9: R-22 is considered a(n)

  • HCFC
  • CFC
  • HFC
  • HCFCH

10: Direct systems using Group II refrigerants

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

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

  • RSES
  • DOT
  • EPA
  • EPO

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

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

13: How many groups of refrigerants are there?

  • 1
  • 5
  • 3
  • 7

14: Ammonia (NH3) is a group III refrigerant

  • True
  • False

15: What is a Category "D" fluid?

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

16: What type of copper is not permitted on refrigeration systems?

  • Type L
  • Type M
  • Type N
  • Type K

17: 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

18: Each machinery room shall contain

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

19: Refrigeration devices shall be equipped with a ____ to protect against unexpected pressure due to a malfunction or fire?

  • Relief valve
  • Temperature limiter device
  • T&P device
  • Circuit Breaker

20: Class T machine room

  • shall include closets used for setting equipment
  • shall have refrigerant leak detecting systems installed inside and outside the room
  • has no flame producing apparatus permanently installed
  • shall have remote controls to stop the action of the refrigerant compressor

21: Ammonia can come in contact with _______ ?

  • Copper
  • Brass
  • Copper tubing
  • Aluminum

22: When an inspection is needed, how often must it be done?

  • every 18 months
  • every 36 months
  • annually
  • every 24 months

23: When this is installed on the high side of a system, it must be capable of reading 1.2 times the design pressure (ASHRAE 15 9.11.3)

  • Pressure gauge
  • Temperature gauge
  • Sight glass gauge
  • All of the above

24: What is not a requirement of a class T machine room?

  • self-closing doors
  • fire hose connection to the building fire protection system
  • automatic ventilation
  • tight fitting doors

25: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.

  • True
  • False