Topics: ASHRAE/CMR
1: The pressure relief device of a positive displacement compressor shall discharge in the ______________or in accordance with 9.7.8
- the vapor side of the system
- high side of the system
- the liquid side of the system
- low side of the system
2: A professional or office building would be considered what type of occupancy?
- commercial
- business
- public assembly
- mercantile
3: Pressure vessels having design pressures of 15 psig or less shall have the strength to withstand at least ______times the design pressure.
- 2.5
- 3.0
- 2.0
- 5.5
4: Which of the following is an inorganic refrigerant?
- R-22
- Ammonia
- Chlorofluorocarbons
- All of the above
5: All machine rooms must be outfitted with a detector that _______?
- activates an audible alarm
- activates a visual alarm
- starts the ventilation system
- All of the above
6: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
- 330 lbs.
- 660 lbs
- 55 lbs
- 550 lbs
7: Pressure vessels with an internal volume of 3 cubic feet or more
- do not need pressure relief protection
- shall use fusible plugs
- shall use pressure relief devices
- shall use pressure relief devices or fusible plugs
8: 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
- 400
- 250
- 100
9: The Department that certifies the transportation of refrigerant is the
- DOT
- RSES
- EPO
- EPA
10: 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
11: How many flammability classifications are refrigerants in?
- 7
- 5
- 2
- 3
12: R-22 is classified as a ____ refrigerant on the safety matrix.
- B-2
- B-1
- A-2
- A-1
13: How are refrigerant blends classified?
- Based on the oil used
- Based on best case Fractionation
- Blends don't have to be classified
- Based on worst case fractionation
14: A pressure relief should be located at least _______ from windows and doors.
- 20'
- 30'
- 25'
- 15'
15: A plug containing an alloy that will melt at a specific temperature to relief pressure is a
- fusion plug
- relief plug
- rupture plug
- fusible plug
16: How much clearance do you need around the perimeter of electrical panels?
- 24"
- 36"
- 18"
- 12"
17: Can you use Ammonia in industrial applications?
- Yes, Under certain condidtions
- No, never
- When mixed with R-718
- Yes, always
18: 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
- 100,000
- 10,000
- 1,000
19: A person holding a license as a refrigeration technician may connect or disconnect for the purpose of installation, repair, or replacement, any electrical device or control to be a part of a refrigeration or air conditioning system, from the
- 24 volt secondary side of the Class 2 transformer to the thermostat
- first disconnect in
- breaker panel in
- load-side of the contactor in
20: Indirect systems using Group II refrigerants
- shall be used for mechanical equipment only
- shall have all refrigerant containing parts except piping, installed in a Class T machine room
- shall be used in refrigeration system in excess of 1,000 lbs
- shall be used in refrigeration system less than 1,000 lbs
21: 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.
22: 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
23: What would be the classification for Stop & Shop grocery store?
- Instituional
- Large mercantile
- Industrial
- Place of assembly
24: Which refrigerant was still able to be vented to the atmosphere after July 1, 1992?
- R-11
- R-113
- R-12
- R-22
25: Before you change the type of refrigerant in a refrigeration system, what three things must be done?
- you can never change refrigerants
- Nothing must be done
- Make sure its compatible, notify owner, and notify AHJ.
- Place sign, check for leaks, and insulate suction line