Topics: ASHRAE/CMR
1: Evaporators located ____inches of a heating coil shall be equipped whit a pressure relief device.
- 10
- 18
- 15
- 24
2: What is not a requirement of a Class T machine room?
- Self-closing doors
- Fire hose connected to the building fire protection system.
- Tight fitting doors
- Automatic ventilation
3: Name a CFC refrigerant(s):
- R-11
- R-12
- R-123
- both a & b
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
- competent welder
- licensed welder
5: NH3 is
- lithium bromide
- ammonia
- R-718
- R-508A
6: The ASHRAE Standard 34 requires what type of alarm for equipment rooms using HCFC-123?
- phosgene gas sening
- CO Sensing
- refrigerant sensing
- A group sensing
7: How many flammability classifications are refrigerants in?
- 7
- 2
- 3
- 5
8: How many gallons of water per pound of ammonia do you need?
- 1
- 5
- 20
- 15
9: What is R-22?
- Chlorodifluoromethane
- CCFCM
- HFC
- Chlorofluoromethane
10: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.
- 75
- 20
- 15
- 50
11: 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
12: 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
13: What type refrigerant is NOT ozone depleting?
- HFC
- CFC
- Halon
- HCFC
14: The color code of a tank of ammonia is
- silver
- lavender
- white
- light green
15: Pressure vessels with an internal volume of 3 cubic feet or more
- shall use pressure relief devices
- do not need pressure relief protection
- shall use pressure relief devices or fusible plugs
- shall use fusible plugs
16: The Department that certifies the transportation of refrigerant is the
- RSES
- EPA
- EPO
- DOT
17: What would be the classification of a prison?
- Place of assembly
- Industrial
- Institutional
- Large mercantile
18: R-22 falls under which safety classification?
- A-1
- A-2
- B-1
- B-2
19: Who approves containers for refrigerants?
- D.O.D
- D.O.T
- E.P.A
- D.O.E
20: 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
21: Class A refrigerants are considered
- non-toxic
- flammable
- non-flammable
- toxic
22: The main purpose of a refrigerant detector in a machinery room is to
- inform there is a refrigerant leak int he system
- detect toxins in the air caused by a refrigerant leak
- to set off an alarm when there is refrigerant present inside the room
- all of the above
23: What must be done if refrigeration lines pass through a concrete floor?
- installed through a pipe casing
- leak checked
- insulated
- moisture barrier
24: _____ and its alloys are suitable for use with ammonia systems.
- Magnesium
- Copper
- Aluminum
- Zinc
25: Ammonia (NH3) is a group III refrigerant
- True
- False