ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: 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

2: What refrigerant is an inorganic compound?

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

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

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

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

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

5: What section governs pressure vessels?

  • Section 8 ASHREA 15 ASME unfired
  • Section 1 ASHREA 15 ASME fired
  • Section ASHREA 34
  • OSHA

6: When a refrigeration or air conditioning system is installed

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

7: 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

  • compressor
  • boiler
  • outside the machinery room
  • evaporator

8: System design pressures must take into consideration, not only, pressures found during normal operation but also what?

  • When it's cold out
  • When there is a malfunction on the high side
  • When its warm out
  • All of the above

9: Refrigerant restricted in 2004 but used for transition for decades:

  • R-22
  • R-123
  • R-134A
  • R-11

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

  • 10'
  • 25'
  • 36'
  • 15'

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

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

12: 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

13: The main cause of enacting the "no vending rule" of July 1st 1992 was

  • global warming potential
  • ozone depletion
  • both a & b
  • None of the above

14: Large Mercantile occupancy is a premise or that portion of a premise where more than ____ persons congregate on levels above or below the street level to purchase personal merchandise.

  • 350
  • 250
  • 400
  • 100

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

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

16: A class A3 refrigerant is considered

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

17: Class 3 refrigerants are

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

18: Evaporators located ____inches of a heating coil shall be equipped whit a pressure relief device.

  • 15
  • 10
  • 18
  • 24

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

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

20: What would be the classification of a church?

  • Large mercantile
  • Institutional
  • Industrial
  • Place of assembly

21: A class B1 refrigerant is considered

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

22: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.

  • UL and UR
  • UM or UL
  • UL and UM
  • UV or UR

23: How many flammability classifications are refrigerants in?

  • 3
  • 7
  • 5
  • 2

24: A class B2 refrigerant is considered

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

25: 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
  • 75
  • 15