ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: How many flammability classifications are refrigerants in?

  • 5
  • 3
  • 7
  • 2

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

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

3: Liquid level gauges shall have _____________ with one exception being that of the liquid level gauge bull’s eye type.

  • color-coded glass to determine type of refrigerant
  • moisture indicators
  • automatic closing shut-off valves
  • All of the above

4: A relief valve shall be located at least ___ above grade.

  • 36'
  • 10'
  • 15'
  • 25'

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

  • PVC
  • Aluminum
  • Stainless Steel
  • Copper

6: Low temperature systems should have what?

  • High pour point
  • Low pour point
  • High viscosity
  • None of the above

7: An example of direct system is

  • rooftop unit
  • chiller
  • absorber
  • none of the above

8: A plug containing an alloy that will melt at a specific temperature to relief pressure is a

  • fusible plug
  • relief plug
  • fusion plug
  • rupture plug

9: Direct systems using Group II refrigerants

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

10: What refrigerant doesn't have to be classified?

  • R-422A
  • R-134A
  • R-717
  • R-718

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

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

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

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

13: The Board of Boilers adopts by reference

  • MSCA Code
  • Montreal Protocol Safety Code
  • the 1997 ANSI/ASHRAE Safety Code
  • the MACS Pressure Vessel Code of Massachusetts

14: Liquid level gauges must be provided with what?

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

15: Large mercantile occupancy is

  • a premise of that portion of a premise where more than 50 persons congregate on levels above of below street level to purchase personal merchandise.
  • a premise of that portion of a premise where more than 100 persons congregate on levels above of below street level to purchase personal merchandise.
  • a premise or that portion of a premise where more than 200 persons congregate on levels above or below street level to purchase personal merchandise
  • a premise or that portion of a premise where more than 1500 persons congregate on levels above or below street level to purchase personal merchandise

16: A restaurant is classified as a

  • mixed occupancy
  • commercial occupancy
  • public assembly occupancy
  • large mercantile occupancy

17: The certificate of inspection

  • 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
  • shall be posted on the compressor shell or electrical panel at the unit

18: What refrigerant were phased out in 2004?

  • R-134a
  • R-12
  • R-11
  • R-22

19: Class A refrigerants are considered

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

20: Class T machine room

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

21: 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
  • 15
  • 50
  • 75

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

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

23: Pressure vessels having an inside diameter of 6” or less shall be protected by

  • either a fusible plug or a pressure relief device
  • Pressure vessels having an inside diameter of 6” or less need no such protection unless otherwise specified
  • a pressure relief device
  • a fusible plug

24: Ammonia (NH3) is a group III refrigerant

  • True
  • False

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

  • A-2
  • B-2
  • A-1
  • B-1