Topics: ASHRAE/CMR
1: Can you use Ammonia in industrial applications?
- No, never
- Yes, always
- When mixed with R-718
- Yes, Under certain condidtions
2: Ammonia can come in contact with _______ ?
- Brass
- Copper tubing
- Aluminum
- Copper
3: Defined process piping by code CMR (528)
- Any piping that conveys a solid, liquid or gas that is not part of the plumbing or fire protection system
- Any piping in an industrial space
- Any piping in an industrial or commercial space
- All of the above
4: A restaurant is classified as a
- mixed occupancy
- public assembly occupancy
- large mercantile occupancy
- commercial occupancy
5: 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
- 110
- 100
- 90
6: R-22 is classified as a ____ refrigerant on the safety matrix.
- A-2
- B-1
- A-1
- B-2
7: There can be no airflow from an occupied space through a machine room unless what?
- System is high velocity
- System is ducted and sealed
- Duct is not located in the ceiling
- None of the above.
8: What would be the classification of a church?
- Industrial
- Large mercantile
- Place of assembly
- Institutional
9: 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
10: Most CFC's are
- flammable
- inert
- toxic
- inert but toxic
11: What kind of material can't be used on the outlet of a relief valve?
- Aluminum
- Copper
- Stainless Steel
- PVC
12: Machinery rooms must be vented to ______?
- unoccupied spaces
- neutralizing tank
- outdoors
- basement
13: A class B2 refrigerant is considered
- non-toxic and highly flammable
- non-toxic and non-flammable
- toxic and somewhat flammable
- toxic and non-flammable
14: Where must a refrigeration contractor's license number be displayed?
- Truck, office, every job, and on all equipment
- Trucks, invoices, and advertising
- Uniforms, checks, and invoices.
- Trucks, license plates, and uniforms
15: What type of pressure relief device is used on a CO2 system?
- Rupture disk
- Fusible plug
- Gate valve
- Glove valve
16: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered
- institutional occupancy
- public assembly occupancy
- mixed occupancy
- commercial occupancy
17: A total of all group A-2,B-2, A-3, and B-3 refrigerants shall not exceed ____ lb in the occupied areas and machinery rooms of institutional occupancies.
- 550
- 50
- 350
- 100
18: Pipe identification labels are required when the system contains more than
- 120 lbs
- 55 lbs
- 65 lbs
- 110 lbs
19: When a refrigerating machinery room is used, the emergency procedures shall be posted
- on a conspicuous card located near the evaporator
- outside the room, immediately adjacent to each door
- inside the room, immediately adjacent to each door
- on a conspicuous card located near the compressor
20: A positive displacement compressor is
- is a reciprocating type compressor with 2 or more pistons
- a compressor in which the increase in pressure is attained by changing the internal pressure of the compression chamber
- a compressor in which the increase in pressure is attained by changing the internal volume of the compression chamber
- where the compressor's suction pressure and the compressor;s discharge pressure is more than 50 PSI
21: What must be done to refrigerant pipes before being buried?
- Coated
- Leaked checked
- Encased
- Certified
22: Methyl Chloride is a halogenated refrigerant and should not come in contact with
- aluminum
- zinc
- magnesium
- all of the above
23: When liquid receivers are used, the liquid refrigerant shall not exceed _______percent of the volume at 90F.
- 90%
- 99%
- 75%
- 80%
24: The color code of a tank of ammonia is
- silver
- white
- lavender
- light green
25: What does safe access mean?
- OSHA approved
- Locked doors
- A clear unobstructed path to the equipment and controls
- Well-lit exit signs