ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: When a refrigeration or air conditioning system is installed

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

2: What would be the classification of a church?

  • Industrial
  • Place of assembly
  • Large mercantile
  • Institutional

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

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

4: Emergency shutdown procedures, including precautions to be observed in case of a breakdown or leak over 55 lbs of refrigerant charge, shall be displayed on a conspicuous card located as near as possible to the

  • outside the machinery room
  • evaporator
  • boiler
  • compressor

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

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

6: What type of relief valve is used on a CO2 system?

  • fusible plug
  • rupture disc
  • glove disc
  • gate valve

7: Refrigeration piping before being buried shall be

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

8: B3 refrigerants are considered

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

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

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

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

  • Insulated
  • Inspected
  • Pressurized
  • Leak tested

11: The pressure relief device of a positive displacement compressor shall discharge in the ______________or in accordance with 9.7.8

  • high side of the system
  • the liquid side of the system
  • the vapor side of the system
  • low side of the system

12: Whoever owns/uses a refrigeration or air conditioning system covered by this code

  • must notify the Department of Public Safety prior to starting the system
  • shall be licensed by the Commonwealth of Massachusetts according to CMR 522
  • shall make application for inspections to the Chief of Inspectors
  • None of the above

13: Which refrigerant replaced R-12?

  • R-410A
  • R-134A
  • R-407A
  • R-22

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

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

15: Who is permitted to access a refrigeration machine room?

  • Contractors only
  • Authorized persons only
  • Anyone, it's a completely safe area
  • Any employee

16: A professional or office building would be considered what type of occupancy?

  • mercantile
  • public assembly
  • business
  • commercial

17: What should not (and can not) be located between a pressure imposing device and a pressure-limiting device?

  • Moisture indicator
  • Muffler
  • Stop valve
  • Foot valve

18: Setting a pressure relief device shall not exceed ___ of the design pressure

  • 75%
  • 80%
  • 90%
  • 100%

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

  • Copper
  • PVC
  • Aluminum
  • Stainless Steel

20: What must be done if refrigeration lines pass through a concrete floor?

  • installed through a pipe casing
  • moisture barrier
  • insulated
  • leak checked

21: Direct systems using Group II refrigerants

  • 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.
  • shall not be used for air condition for human comfort

22: Stop valves shall not be permitted between the system and the

  • condenser
  • relief valve
  • bleed valve
  • service valve

23: 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
  • do not need pressure relief protection
  • shall use fusible plugs

24: R-22 falls under which safety classification?

  • A-2
  • B-1
  • B-2
  • A-1

25: Pressure vessel having an inside diameter exceeding 6” with an internal pressure greater than 15psig shall be marked directly on or on the nameplate the letters _______________ signifying compliance with the ASME Boiler & Pressure Vessel Code.

  • “UV”
  • “UL”
  • “UM” and “UV”
  • “U” or “UM”