ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: R-11 belongs to Group

  • B-1
  • B-3
  • A-2
  • A-1

2: A declaration test is needed when the system contains more than

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

3: 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

4: 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 technician
  • licensed welder
  • competent welder

5: A class A3 refrigerant is considered

  • non-toxic and non-flammable
  • non-toxic but highly flammable
  • toxic and non-flammable
  • toxic and somewhat flammable

6: Direct systems using Group II refrigerants

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

7: A class B1 refrigerant is considered

  • toxic and somewhat flammable
  • non-toxic and non-flammable
  • toxic but non-flammable
  • non-toxic but highly flammable

8: What would be the classification of a prison?

  • Place of assembly
  • Industrial
  • Institutional
  • Large mercantile

9: The Board of Boilers adopts by reference

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

10: A class B2 refrigerant is considered

  • toxic and non-flammable
  • non-toxic and non-flammable
  • toxic and somewhat flammable
  • non-toxic and highly flammable

11: What type of pressure relief device is used on a CO2 system?

  • Glove valve
  • Gate valve
  • Rupture disk
  • Fusible plug

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

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

13: A Low-Probability System

  • is such that a leak of refrigerant from a failed connection can not enter the occupied space
  • is such that any leak will cause injury or death to anyone within a 100 square foot area
  • is a system highly likely to leak form a failed connection or component of such system
  • is such that a leak of refrigerant from a failed connection will enter the occupied space

14: What is the refrigerant chlorodifluoromethane?

  • R-123
  • R-134a
  • R-22
  • R-12

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

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

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

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

17: The discharge relief valve is located (9.4.6)

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

18: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

19: Name a CFC refrigerant(s):

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

20: What must be done to all doors and access points in duct work going through a mechanical room?

  • Must be hindged
  • Must be screwed shut
  • Must be sealed and gasketed
  • All of the above

21: How far from the ground does a relief valve need to be?

  • At least 25' above grade
  • Not more than 3' above grade
  • At least 20' above grade
  • At least 15' above grade

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

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

23: Fusible plugs shall not be used with pressure vessels of

  • 15 cubic feet or more
  • 3 cubic feet or more
  • 3 cubic feet or less
  • 15 square feet or less

24: What pipe can not be used for refrigeration?

  • L
  • K
  • N
  • M

25: What is an egress?

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