Topics: ASHRAE/CMR
1: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.
- True
- False
2: Refrigerant piping crossing an open space that affords passageway in any building shall not be less than _____ feet above the floor unless piping is located against the ceiling.
- 7.25'
- 8'4"
- 7.00'
- 9.00'
3: Doors communicating with outside from a mechanical room must be?
- Self-closing, wooden, fire door
- Self-closing, aligned, fire door
- Steel, approved, weather-stripped
- Self-closing, approved, fire door
4: 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
5: When releasing a hydrogenated hydrocarbon refrigerant to the atmosphere, ample ventilation must be provided and
- no flames shall be permitted
- gas masks must be worn
- the owner shall be informed
- explosion precautions must be taken
6: Where a refrigeration or air conditioning system is installed,
- The company who installed the system must notify the fire department in the jurisdiction where installed
- it shall not be operated below prescribed pressuers
- A field inspection shall be made before it is put into service
- the form or certificate shall be authorized by the Department of Public Safety
7: What is Trichlorotrifluoromethane?
- R-12
- R-113
- R-13
- R-11
8: Which refrigerant was still able to be vented to the atmosphere after July 1, 1992?
- R-12
- R-113
- R-22
- R-11
9: Who approves containers for refrigerants?
- D.O.D
- D.O.T
- E.P.A
- D.O.E
10: An example of direct system is
- rooftop unit
- chiller
- absorber
- none of the above
11: Where are the three places that the discharge from an ammonia relief valve be piped?
- To chemical neutralizing tank only
- Underground, into drain, into mechanical room
- Atmosphere, Tank containing water, where the AHJ indicates.
- None of the above.
12: What was the main reason for enacting the no venting rule of July 1, 1992?
- Ozone depletion
- Green house effect
- Global warming potential
- All of the above
13: What is not a requirement of a Class T machine room?
- Self-closing doors
- Fire hose connected to the building fire protection system.
- Tight fitting doors
- Automatic ventilation
14: Ammonia can come in contact with _______ ?
- Aluminum
- Copper
- Copper tubing
- Brass
15: Large Mercantile occupancy is a premise or that portion of a premise where more than ____ persons congregate on levels above or below the street level to purchase personal merchandise.
- 350
- 250
- 400
- 100
16: Which refrigerant replaced R-12?
- R-407A
- R-410A
- R-134A
- R-22
17: Which refrigerant(s) is an HFC?
- R-22
- R-410A
- R-502
- All of the above
18: Relief valves are rated in
- pounds of air per minute
- gallons of water per minute
- pounds of air per hour
- gallons of water per hour
19: What is an egress?
- A code violation
- A valve put on the low side of the system to prevent frosting
- An escape route
- An entrance or exit
20: Pipe identification labels are required when the system contains more than
- 65 lbs
- 110 lbs
- 55 lbs
- 120 lbs
21: What refrigerant has zero ozone depletion
- HFC
- CFC
- HCFC
- None of the above
22: 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
- high side of the system
- the vapor side of the system
- the liquid side of the system
23: When is the space above a drop ceiling calculated as space for refrigerant limit quantities?
- When its white
- When it's used as part of a supply or return air system
- When there are sprinklers above
- When there is a space 6' or more above it
24: What refrigerant doesn't have to be classifted?
- R-717
- R-711
- R-718
- R-134a
25: 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
- 330 lbs
- 500 lbs