Topics: ASHRAE/CMR
1: 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
2: 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
3: 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 and a rupture disc
- over pressure protection
- over pressure protection as well as a temperature protection device
4: How far from the ground does a relief valve need to be?
- Not more than 3' above grade
- At least 25' above grade
- At least 20' above grade
- At least 15' above grade
5: Halogenated refrigerants cannot be used with what material?
- Copper
- Stainless steel
- Magnesium alloy
- Aluminum
6: When is the only time you can leave a service container attached to a system?
- Leaking system
- Recovery
- Charging
- Both b and c
7: How many refrigerant classifications are there for toxicity?
- 1
- 2
- 5
- 3
8: R-123 belongs to Group
- B-2
- A-3
- B-3
- B-1
9: When releasing a hydrogenated hydrocarbon refrigerant to the atmosphere, ample ventilation must be provided and
- gas masks must be worn
- explosion precautions must be taken
- the owner shall be informed
- no flames shall be permitted
10: Pressure vessels with an internal volume of 3 cubic feet or less
- shall use pressure relief devices or fusible plugs
- shall use pressure relief devices
- do not need pressure relief protection
- shall use fusible plugs
11: 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
- A field inspection shall be made before it is put into service
- it shall not be operated below prescribed pressuers
- the form or certificate shall be authorized by the Department of Public Safety
12: Walls and doors of a machinery room shall be at least _____ hour(s) fire rated.
- 1
- 5
- 3
- 2
13: When an inspection is needed, how often must it be done?
- annually
- every 36 months
- every 18 months
- every 24 months
14: Evaporators located ____inches of a heating coil shall be equipped whit a pressure relief device.
- 10
- 15
- 24
- 18
15: What would be the classification of a church?
- Institutional
- Industrial
- Place of assembly
- Large mercantile
16: Doors communicating with outside from a mechanical room must be?
- Self-closing, approved, fire door
- Self-closing, wooden, fire door
- Steel, approved, weather-stripped
- Self-closing, aligned, fire door
17: A hotel is considered a _______ occupancy.
- mercantile
- commercial
- residential
- institutional
18: A factory-sealed system containing less than 22lbs. of Group A1 refrigerant
- shall have a pressure limiting device installed on the high side of the system
- shall have a pressure limiting device and a pressure relief valve installed
- does not require a pressure-limiting device
- shall be inspected by the Boiler of Inspectors bi-annually
19: What is R-22?
- Chlorodifluoromethane
- Chlorofluoromethane
- CCFCM
- HFC
20: 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.
- 100
- 80
- 90
- 110
21: _____ and its alloys are suitable for use with ammonia systems.
- Aluminum
- Copper
- Magnesium
- Zinc
22: R-22 falls under which safety classification?
- A-1
- A-2
- B-1
- B-2
23: The Department that certifies the transportation of refrigerant is the
- EPA
- DOT
- RSES
- EPO
24: A professional or office building would be considered what type of occupancy?
- mercantile
- commercial
- business
- public assembly
25: What must be done to refrigerant pipes before being buried ?(8.10.4)
- Leak checked
- Certified
- Classifed
- Insulated and installed in a pipe duct (Encased)