Topics: ASHRAE/CMR
1: A High-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 will enter an unoccupied space
- is such that any leak will cause injury or death to anyone within a 100 square foot area
- is such that a leak of refrigerant from a failed connection will enter the occupied space
2: Pressure vessels with an internal volume of 3 cubic feet or more
- shall use fusible plugs
- do not need pressure relief protection
- shall use pressure relief devices
- shall use pressure relief devices or fusible plugs
3: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within
- 2 months
- 30 days
- 1 week
- 14 days
4: Pressure vessels with an internal volume of 10 cubic feet or more
- shall use rupture discs or duel pressure relief valves
- shall use fusible plugs
- shall use pressure relief devices or fusible plugs
- shall use pressure relief devices
5: What section of ASHRAE-15 governs pressure vessels?
- Section 6 ASHRAE-34 ASME VIII unfired
- Section 9 ASHRAE-15 ASME VIII unfired
- Section 7 ASHRAE-15 ASME VIII fired
- OSHA
6: Low temperature systems should have what?
- High pour point
- Low pour point
- High viscosity
- None of the above
7: A declaration test is needed when the system contains more than
- 65 lbs
- 55 lbs
- 110 lbs
- 120 lbs
8: R-717 is
- trichloromethane
- water
- ammonia
- carbon dioxide
9: Ammonia is under what safety classification?
- B2
- B3
- A3
- B1
10: What type refrigerant is NOT ozone depleting?
- CFC
- HCFC
- Halon
- HFC
11: Name an HCFC refrigerant(s):
- R-22
- R-123
- R-11
- both a & b
12: When is the only time you can leave a service container attached to a system?
- Leaking system
- Recovery
- Charging
- Both b and c
13: Machinery rooms shall be vented to _____________ and utilizing mechanical ventilation.
- the outdoors
- the mechanical room housing the refrigeration system
- Machinery rooms need not be vented
- the return air ducted system
14: The discharge relief valve is located (9.4.6)
- on top of the condensor
- between the compressor and reciever
- between the compressor and the stop valve
- between the compressor and oil separator
15: Pressure limiting devices are not required for systems containing less then ________ refrigerants.
- 6.6 lbs
- 13.9 lbs
- 22 lbs
- 44 lbs
16: 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
17: 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
18: What type of material can't be used on the outlet of a relief valve?
- Stainless steel
- PVC
- Magnesium alloy
- Copper
19: A relief valve discharge capacity is rated in
- Pounds of air per minute.
- PSIG
- PSIA
- temperature minus pounds of air per second divided by release rate squared
20: Joints in refrigeration piping must be _____ before being covered?
- Leak tested
- Inspected
- Pressurized
- Insulated
21: Pipe identification labels are required when the system contains more than
- 65 lbs
- 120 lbs
- 110 lbs
- 55 lbs
22: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
- 55 lbs
- 660 lbs
- 550 lbs
- 330 lbs.
23: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.
- True
- False
24: How many flammability classifications are refrigerants in?
- 2
- 7
- 5
- 3
25: What is an example of institutional occupancy?
- Hospital
- Shopping mall
- Football stadium
- Dorms