ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

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

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

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

3: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered

  • commercial occupancy
  • institutional occupancy
  • public assembly occupancy
  • mixed occupancy

4: 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

5: Trichlorofluoromethane is the name of what refrigerant?

  • R-502
  • R-11
  • R-113
  • R-12

6: A Low-Probability System

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

7: Pressure limiting devices are not required for systems containing less then ________ refrigerants.

  • 6.6 lbs
  • 44 lbs
  • 13.9 lbs
  • 22 lbs

8: A High-Probability System

  • is such that a leak of refrigerant from a failed connection will 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 an unoccupied space

9: Machinery rooms must be vented to ______?

  • basement
  • neutralizing tank
  • unoccupied spaces
  • outdoors

10: All serviceable components of a refrigeration system shall be provided with

  • manufactures instructions on start-up procedures
  • service manuals
  • name plates with markings referring to pressure and temperature in accordance with ASME Boiler and Pressure Vessel Code
  • safe access

11: Which refrigerant(s) is an HFC?

  • R-22
  • R-410A
  • R-502
  • All of the above

12: 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
  • high and low pressure controls
  • a refrigerant detector located in an area where the refrigerant from a leak will concentrate
  • a toxicity detector where the presence of ammonia or lithium bromide from a leak will concentrate

13: A movie theater would be considered a

  • commercial occupancy
  • mixed occupancy
  • public assembly occupancy
  • institutional occupancy

14: How are refrigerant blends classified?

  • Based on the oil used
  • Based on best case Fractionation
  • Based on worst case fractionation
  • Blends don't have to be classified

15: Which of the following are considered inorganic refrigerants?

  • R-717 and R-718
  • 410A and R-407C
  • R-500 and R-502
  • None of the above

16: Ammonia belongs to Group

  • A-2
  • A-1
  • B-1
  • B-2

17: The 522 CMR 9.00 has adopted for reference ASHRAE ____

  • 25
  • 10
  • 15
  • III

18: A “U” or “UM” marking a on a nameplate of a pressure vessels signifies compliance with Section VIII of

  • the ASME Boiler and Pressure Vessel Code
  • Section 11.3.1.5 ASHRAE 15 Standard
  • the ANSI Standard 10.7.2
  • both the ANSI Standard 10.7.2 and ASHRAE 15 Standard 11.3.1.5

19: Ammonia is under what safety classification?

  • B1
  • A3
  • B3
  • B2

20: What is an example of institutional occupancy?

  • Football stadium
  • Dorms
  • Hospital
  • Shopping mall

21: An example of direct system is

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

22: 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.

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

23: How far from the window does a relief valve need to be according to ASHRAE-15?

  • At least 40'
  • At least 20'
  • There is no minimum for relief valve and windows.
  • At least 30'

24: 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
  • of Group B2 refrigerant shall be prohibited
  • shall be prohibited
  • shall not be prohibited

25: Low temperature systems should have what?

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