Topics: ASHRAE/CMR
1: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
- 55 lbs
- 500 lbs
- 660 lbs
- 330 lbs
2: R-717 is
- water
- ammonia
- carbon dioxide
- trichloromethane
3: What would be the classification for Stop & Shop grocery store?
- Industrial
- Place of assembly
- Large mercantile
- Instituional
4: Evaporators within 18" of a heating coil must be equipped with a
- zone valve
- pressure relief device
- low limit control
- high limit control
5: The dial of a pressure gauge, when installed on the high side of a system be graduated 1.2 times the designed pressure.
- True
- False
6: What type of pressure relief device is used on a CO2 system?
- Glove valve
- Rupture disk
- Fusible plug
- Gate valve
7: R-22 is considered a(n)
- HFC
- HCFC
- HCFCH
- CFC
8: What refrigerant were phased out in 2004?
- R-134a
- R-12
- R-22
- R-11
9: The discharge relief valve is located (9.4.6)
- between the compressor and reciever
- between the compressor and oil separator
- on top of the condensor
- between the compressor and the stop valve
10: What is the minimum size of the discharge pipe?
- Same size as the outlet of the relief valve
- One pipe size larger that the inlet of the relief valve
- Depends on size of manifold
- All of the above
11: R-22 falls under which safety classification?
- A-1
- B-1
- A-2
- B-2
12: What would be the classification of a prison?
- Place of assembly
- Large mercantile
- Industrial
- Institutional
13: Pressure vessels with an internal volume of 10 cubic feet or more
- shall use pressure relief devices
- shall use rupture discs or duel pressure relief valves
- shall use fusible plugs
- shall use pressure relief devices or fusible plugs
14: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within
- 30 days
- 14 days
- 2 months
- 1 week
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: A premise or that portion of a premise where people transact business, receive personal service, or purchase foods, other goods is considered a
- public assembly occupancy.
- business occupancy
- mercantile occupancy
- commercial occupancy
17: No open flames are allowed in the machinery room unless?
- Only when combustion air is provided from outside of the machinery room
- Approved by the authorized person
- Approved by the installing contractor
- Never can be allowed
18: When a pressure gauge is permanently installed on a system, it must be ___ times the design pressure of the system.
- 1.2
- 1
- 2.2
- 1.5
19: When a refrigerating machinery room is used, the emergency procedures shall be posted
- on a conspicuous card located near the compressor
- inside the room, immediately adjacent to each door
- outside the room, immediately adjacent to each door
- on a conspicuous card located near the evaporator
20: Name an HCFC refrigerant(s):
- R-22
- R-123
- R-11
- both a & b
21: How many refrigerant classifications are there for toxicity?
- 2
- 1
- 3
- 5
22: Most CFC's are
- inert but toxic
- inert
- flammable
- toxic
23: When systems are protected by a high pressure relief device, the compressor's pressure limiting device shall be set at or below ____ % of the operating pressure of the high side relief device.
- 80
- 100
- 90
- 110
24: What happens after your initial inspection of a pressure vessel?
- Notify the AHJ to let them know that the system been inspected
- Inspector leaves a metal tag with a certification listed on it
- Notify the Fire Marshal that the system has been inspected and approved
- There is a temporary shut-down until a final inspection can be performed.
25: What is the refrigerant chlorodifluoromethane?
- R-22
- R-134a
- R-12
- R-123