Topics: ASHRAE/CMR
1: What section governs pressure vessels?
- Section 1 ASHREA 15 ASME fired
- Section ASHREA 34
- OSHA
- Section 8 ASHREA 15 ASME unfired
2: Class 3 refrigerants are
- toxic
- non-toxic
- highly flammable
- non-flammable
3: How many gallons of water do you need per pound of ammonia?
- 10
- 50
- 1
- 100
4: Evaporators located ____inches of a heating coil shall be equipped whit a pressure relief device.
- 10
- 24
- 15
- 18
5: Name three things that must be done when changing refrigeration lubricant?
- Place sign, check for leaks, insulate
- Nothing must be done
- Make sure it's compatible, notify owner, notify AHJ
- You can't change lubricants.
6: How many flammability classifications are refrigerants in?
- 3
- 5
- 2
- 7
7: B3 refrigerants are considered
- toxic and highly flammable
- non-toxic but flammable
- toxic but non-flammable
- non-toxic but non-flammable
8: Trichlorofluoromethane is the name of what refrigerant?
- R-502
- R-12
- R-11
- R-113
9: Setting a pressure relief device shall not exceed ___ of the design pressure
- 75%
- 90%
- 100%
- 80%
10: The pressure relief device of a positive displacement compressor shall discharge in the ______________or in accordance with 9.7.8
- low side of the system
- the vapor side of the system
- high side of the system
- the liquid side of the system
11: How many CFMs are required per square foot of commercial office occupied space
- 15 CFM
- 20 CFM
- .5 CFM
- 5 CFM
12: A pressure relief should be located at least _______ from windows and doors.
- 30'
- 15'
- 20'
- 25'
13: The color code of a tank of ammonia is
- light green
- lavender
- silver
- white
14: 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
15: When liquid receivers are used, the liquid refrigerant shall not exceed _______percent of the volume at 90F.
- 90%
- 99%
- 80%
- 75%
16: Machinery rooms shall be vented to _____________ and utilizing mechanical ventilation.
- the mechanical room housing the refrigeration system
- the return air ducted system
- Machinery rooms need not be vented
- the outdoors
17: What type of copper is not permitted on refrigeration systems?
- Type N
- Type K
- Type L
- Type M
18: The test pressure applied to the high side of each factory-assembled refrigerating system shall be at least equal to the design pressure of
- the high side
- 2.5 times the design pressure
- the aggregate of the high side and low side
- the low side
19: A class B2 refrigerant is considered
- toxic and somewhat flammable
- non-toxic and non-flammable
- non-toxic and highly flammable
- toxic and non-flammable
20: _____ alloys shall not be used in contact with an halogenated refrigerants.
- Copper
- Nickel
- Magnesium
- Zinc
21: Most CFC's are
- inert but toxic
- inert
- flammable
- toxic
22: Systems containing more than 110 pounds must have stop valves located at the
- compressor suction inlet
- compressor discharge outlet
- receiver inlet and outlet
- All of the above
23: When air is ducted through a machine room that services occupied space, What must be done?
- Ducted and sealed
- Flanged and gasketed
- Welded and seamed.
- Insulated and cross broke
24: How many gallons of water per pound of ammonia do you need?
- 5
- 15
- 1
- 20
25: Which of the following is an inorganic refrigerant?
- R-22
- Ammonia
- Chlorofluorocarbons
- All of the above