ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: 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 welder
  • licensed technician
  • competent welder

2: Liquid level gauges must be provided with what?

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

3: What is an example of institutional occupancy?

  • Dorms
  • Shopping mall
  • Hospital
  • Football stadium

4: What is the minimum size of the discharge pipe?

  • Same size as the outlet of the relief valve
  • One pipe size larger that the inlet of the relief valve
  • Depends on size of manifold
  • All of the above

5: The discharge relief valve is located (9.4.6)

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

6: What is an egress?

  • A valve put on the low side of the system to prevent frosting
  • An entrance or exit
  • A code violation
  • An escape route

7: A 3-cubic foot receiver must have what type of relief valve?

  • fusible plug
  • relief valve
  • rupture device
  • none of the above

8: Class A refrigerants are considered

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

9: A person holding a license as a refrigeration technician may connect or disconnect for the purpose of installation, repair, or replacement, any electrical device or control to be a part of a refrigeration or air conditioning system, from the

  • load-side of the contactor in
  • 24 volt secondary side of the Class 2 transformer to the thermostat
  • first disconnect in
  • breaker panel in

10: The certificate of inspection

  • shall be posted on the compressor shell or electrical panel at the unit
  • shall be authorized by a notarized insurance company
  • shall be posted and protected from dirt, water, and other elements
  • shall be $20 and an additional fee of $1 for each tone above 20 tons

11: Ammonia (NH3) is a group III refrigerant

  • True
  • False

12: What refrigerant is an inorganic compound?

  • Ammonia
  • R-22
  • R-132A
  • R-410A

13: Institutional occupancy is

  • a premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space.
  • a premise or that portion of a premise from which, because they are disabled, debilitated, or confined, occupants cannot readily leave without the assistance of others.
  • a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
  • None of the above

14: Where are the three places that the discharge from an ammonia relief valve be piped?

  • To chemical neutralizing tank only
  • Underground, into drain, into mechanical room
  • Atmosphere, Tank containing water, where the AHJ indicates.
  • None of the above.

15: Fusible plugs must have what marked on them?

  • Melting temperature in F
  • Melting temperature in C
  • Opening pressure
  • All of the above

16: 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.

  • 55
  • 50
  • 15
  • 75

17: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

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

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

19: How many refrigerant classifications are there for toxicity?

  • 3
  • 5
  • 1
  • 2

20: Industrial occupancy is

  • a premise or that portion of a premise that is not open to the public, where access by authorized persons is controlled, and that is used to manufacture, process, or store goods, such as chemicals, food, ice, meat, or petroleum.
  • is a premise or that portion of a premise where large number of people congregate and from which occupants cannot quickly vacate the space.
  • a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
  • Both a and b are correct

21: Refrigeration piping before being buried shall be

  • leak tested
  • encased in pipe duct
  • pressure tested
  • All of the above

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

  • True
  • False

23: How many CFMs are required per square foot of commercial office occupied space

  • .5 CFM
  • 5 CFM
  • 20 CFM
  • 15 CFM

24: Ammonia can come in contact with _______ ?

  • Brass
  • Copper tubing
  • Aluminum
  • Copper

25: Indirect systems using Group II refrigerants

  • shall be used for mechanical equipment only
  • shall be used in refrigeration system less than 1,000 lbs
  • shall be used in refrigeration system in excess of 1,000 lbs
  • shall have all refrigerant containing parts except piping, installed in a Class T machine room