Topics: ASHRAE/CMR
1: Pressure limiting devices are not required for systems containing less then ________ refrigerants.
- 13.9 lbs
- 44 lbs
- 22 lbs
- 6.6 lbs
2: Refrigeration piping before being buried shall be
- leak tested
- encased in pipe duct
- pressure tested
- All of the above
3: Halo-carbon refrigerants cannot be used with what material?
- Stainless Steel
- Magnesium alloy
- Aluminum
- Copper
4: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within
- 2 months
- 30 days
- 1 week
- 14 days
5: Which of the following are considered inorganic refrigerants?
- R-717 and R-718
- 410A and R-407C
- R-500 and R-502
- None of the above
6: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.
- 20
- 15
- 50
- 75
7: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.
- True
- False
8: Large mercantile occupancy is
- a premise of that portion of a premise where more than 100 persons congregate on levels above of below street level to purchase personal merchandise.
- a premise or that portion of a premise where more than 200 persons congregate on levels above or below street level to purchase personal merchandise
- a premise of that portion of a premise where more than 50 persons congregate on levels above of below street level to purchase personal merchandise.
- a premise or that portion of a premise where more than 1500 persons congregate on levels above or below street level to purchase personal merchandise
9: 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.
- ammonia
- HCFC-123
- Lithium bromide
- CFC-11
10: Name three things that must be done when changing refrigeration lubricant?
- Make sure it's compatible, notify owner, notify AHJ
- Place sign, check for leaks, insulate
- You can't change lubricants.
- Nothing must be done
11: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.
- UL and UR
- UL and UM
- UM or UL
- UV or UR
12: Ammonia is under what safety classification?
- B2
- B3
- A3
- B1
13: Refrigerant restricted in 2004 but used for transition for decades:
- R-22
- R-123
- R-134A
- R-11
14: What type of refrigerants are NOT flammable?
- CHC
- HFC
- HCFC
- All of the above
15: How are refrigerant blends classified?
- Blends don't have to be classified
- Based on worst case fractionation
- Based on the oil used
- Based on best case Fractionation
16: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
- 660 lbs
- 550 lbs
- 55 lbs
- 330 lbs.
17: How many refrigerant classifications are there for toxicity?
- 3
- 2
- 1
- 5
18: Which of the following is an inorganic refrigerant?
- R-22
- Ammonia
- Chlorofluorocarbons
- All of the above
19: Most CFC's are
- flammable
- toxic
- inert
- inert but toxic
20: R-22 is classified as a ____ refrigerant on the safety matrix.
- A-1
- B-2
- A-2
- B-1
21: Where are the three places that the discharge from an ammonia relief valve be piped?
- atmosphere, tank containing water, where the A.H.J. indicates
- underground, into drain, into mechanical room
- to chemical neutralizing tank only
- none of the above
22: 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
23: A premise or that portion of a premise where people transact business, receive personal service, or purchase foods, other goods is considered a
- mercantile occupancy
- public assembly occupancy.
- commercial occupancy
- business occupancy
24: Which refrigerant was still able to be vented to the atmosphere after July 1, 1992?
- R-22
- R-12
- R-113
- R-11
25: 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 volume of the compression chamber
- 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