Topics: ASHRAE/CMR
1: Ammonia is under what safety classification?
- B1
- B3
- A3
- B2
2: A 3-cubic foot receiver must have what type of relief valve?
- fusible plug
- relief valve
- rupture device
- none of the above
3: How many different groups of refrigerants are there?
- 7
- 15
- 3
- 11
4: Ammonia shall be discharged into ____________ or a tank containing one gallon of water for every pound of ammonia.
- the atmosphere
- a de-pressurized recovery tank with a silver top and yellow bottom
- a tank containing two pounds of a water/lithium bromide mix for every pound of ammonia
- All of the above
5: How many refrigerant classifications are there for flammability?
- 7
- 1
- 2
- 3
6: Before determining if a machinery room equipment is excluded from following Ashrae 15, you must determine how many pounds of refrigerant per _____ cubic feet?
- 100
- 1,000
- 10,000
- 100,000
7: What does safe access mean?
- Well-lit exit signs
- A clear unobstructed path to the equipment and controls
- Locked doors
- OSHA approved
8: What is an example of institutional occupancy?
- Shopping mall
- Dorms
- Hospital
- Football stadium
9: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
- 550 lbs
- 55 lbs
- 330 lbs.
- 660 lbs
10: Ammonia can come in contact with _______ ?
- Brass
- Copper tubing
- Copper
- Aluminum
11: A declaration test is needed when the system contains more than
- 55 lbs
- 120 lbs
- 65 lbs
- 110 lbs
12: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered
- institutional occupancy
- mixed occupancy
- public assembly occupancy
- commercial occupancy
13: Which refrigerant was still able to be vented to the atmosphere after July 1, 1992?
- R-22
- R-113
- R-11
- R-12
14: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code
- Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
- over pressure protection
- over pressure protection as well as a temperature protection device
- over pressure protection and a rupture disc
15: Halogenated refrigerants cannot be used with what material?
- Aluminum
- Magnesium alloy
- Stainless steel
- Copper
16: A positive displacement compressor is
- a compressor in which the increase in pressure is attained by changing the internal pressure of the compression chamber
- where the compressor's suction pressure and the compressor;s discharge pressure is more than 50 PSI
- a compressor in which the increase in pressure is attained by changing the internal volume of the compression chamber
- is a reciprocating type compressor with 2 or more pistons
17: What pipe can not be used for refrigeration?
- N
- K
- L
- M
18: A pressure vessel having an inside diameter of 6” or less shall be sufficient to withstand ____times the pressure of the saturation temperature of the refrigerant or ____times the critical pressure of the refrigerant, whichever is less.
- 3.0, 3.5
- 2.5, 3.0
- 6.6, 6.6
- 2.5, 2.5
19: copper and its alloys shall not be used in contact with _____ except as a component of bronze alloys for bearing or other non-refrigerant containing uses.
- Lithium bromide
- ammonia
- CFC-11
- HCFC-123
20: Pipe identification labels are required when the system contains more than
- 110 lbs
- 55 lbs
- 120 lbs
- 65 lbs
21: What would be the classification of a prison?
- Institutional
- Place of assembly
- Large mercantile
- Industrial
22: What refrigerant doesn't have to be classifted?
- R-718
- R-711
- R-134a
- R-717
23: According to ASHRAE Standard-15 9.8 Positive Displacement Compressor Protection, the pressure-relief device discharge into
- the low-pressure side of the system
- the high side of the system
- the liquid receiver
- both a and c are correct
24: What would be the classification of a church?
- Large mercantile
- Place of assembly
- Institutional
- Industrial
25: R-410A is classified as a ____ refrigerant on the safety matrix.
- B-2
- A-2
- A-1
- B-1