Topics: ASHRAE/CMR
1: How many gallons of water per pound of ammonia do you need?
- 1
- 15
- 5
- 20
2: When a refrigerating machinery room is used, the emergency procedures shall be posted
- inside the room, immediately adjacent to each door
- on a conspicuous card located near the compressor
- outside the room, immediately adjacent to each door
- on a conspicuous card located near the evaporator
3: Where are the three places that the discharge from an ammonia relief valve be piped?
- To chemical neutralizing tank only
- Underground, into drain, into mechanical room
- Atmosphere, Tank containing water, where the AHJ indicates.
- None of the above.
4: What is not a requirement of a class T machine room?
- tight fitting doors
- self-closing doors
- fire hose connection to the building fire protection system
- automatic ventilation
5: When is the space above a drop ceiling calculated as space for refrigerant limit quantities?
- When there is a space 6' or more above it
- When it's used as part of a supply or return air system
- When its white
- When there are sprinklers above
6: Refrigerant restricted in 2004 but used for transition for decades:
- R-11
- R-22
- R-123
- R-134A
7: When can recovered refrigerants be reused?
- They can't
- Only when used in original owner's equipment
- Only if used in 30 days of recovery
- None of the above
8: When testing systems using non-positive displacement compressors, the entire system shall be considered for test purposes as the low side.
- True
- False
9: What refrigerant is an inorganic compound?
- Ammonia
- R-22
- R-132A
- R-410A
10: Who is permitted to access a refrigeration machine room?
- Any employee
- Anyone, it's a completely safe area
- Authorized persons only
- Contractors only
11: 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
12: What was the main reason for enacting the no venting rule of July 1, 1992?
- Ozone depletion
- Green house effect
- Global warming potential
- All of the above
13: A relief valve discharge capacity is rated in
- temperature minus pounds of air per second divided by release rate squared
- PSIG
- Pounds of air per minute.
- PSIA
14: Liquid level gauges must be provided with what?
- A low level mark
- A relief valve
- Automatic shut-offs
- A red line
15: Stop valves shall not be permitted between the system and the
- relief valve
- condenser
- service valve
- bleed valve
16: What is the refrigerant dichlorodifluoromethane?
- R-12
- R-123
- R-134A
- R-22
17: Trichlorofluoromethane is the name of what refrigerant?
- R-12
- R-113
- R-11
- R-502
18: R-123 belongs to Group
- B-1
- B-2
- B-3
- A-3
19: What is not a requirement of a Class T machine room?
- Automatic ventilation
- Fire hose connected to the building fire protection system.
- Tight fitting doors
- Self-closing doors
20: Which refrigerant(s) is an HFC?
- R-22
- R-410A
- R-502
- All of the above
21: What refrigerant doesn't have to be classifted?
- R-718
- R-717
- R-711
- R-134a
22: What kind of material can't be used on the outlet of a relief valve?
- Stainless Steel
- Aluminum
- Copper
- PVC
23: Liquid level gauge glasses shall have automatic closing shut off valves, except Bull's eye or reflex type.
- True
- False
24: What refrigerant doesn't have to be classified?
- R-718
- R-134A
- R-422A
- R-717
25: What is R-290’s ASHRAE safety code?
- B1
- A2
- A3
- B2