Topics: ASHRAE/CMR
1: The ASHRAE Standard 34 requires what type of alarm for equipment rooms using HCFC-123?
- refrigerant sensing
- A group sensing
- phosgene gas sening
- CO Sensing
2: Liquid level gauge glasses shall have automatic closing shut off valves, except Bull's eye or reflex type.
- True
- False
3: Which refrigerant class listed below is the most flammable?
- A2
- A3
- B2
- C3
4: Pressure relief valves shall be marked with the data from
- Section IV Division of the ASME Boiler & Pressure Code
- Section XIII Division of the ASME Boiler & Pressure Code
- Section I Division VIII of ASME Boiler & Pressure Code
- Section VIII Division of the ASME Boiler & Pressure Code
5: Refrigeration piping before being buried shall be
- leak tested
- encased in pipe duct
- pressure tested
- All of the above
6: 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
- the vapor side of the system
- high side of the system
- the liquid side of the system
7: Joints in refrigeration piping must be _____ before being covered?
- Pressurized
- Leak tested
- Insulated
- Inspected
8: 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
9: Single compound Refrigerants are classified by what two criteria?
- Weight and color
- Flammability and toxicity
- Temperature range and hazardousness
- Flammability and temperature range
10: R-22 is considered a(n)
- HCFCH
- HCFC
- HFC
- CFC
11: The certificate of inspection
- shall be $20 and an additional fee of $1 for each tone above 20 tons
- shall be posted on the compressor shell or electrical panel at the unit
- shall be posted and protected from dirt, water, and other elements
- shall be authorized by a notarized insurance company
12: 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
13: Dual-pressure relief devices should be installed on
- vessels of 3 cubic feet or less
- vessels of 3 cubic feet or more
- vessels of 10 cubic feet or less
- vessels of 10 cubic feet or more
14: Machinery rooms must be vented to ______?
- unoccupied spaces
- basement
- outdoors
- neutralizing tank
15: R-410A is classified as a ____ refrigerant on the safety matrix.
- A-1
- A-2
- B-2
- B-1
16: Which of the following is an inorganic refrigerant?
- R-22
- Ammonia
- Chlorofluorocarbons
- All of the above
17: R-717 is
- carbon dioxide
- trichloromethane
- ammonia
- water
18: Class T machine room
- has no flame producing apparatus permanently installed
- shall include closets used for setting equipment
- shall have refrigerant leak detecting systems installed inside and outside the room
- shall have remote controls to stop the action of the refrigerant compressor
19: How many gallons of water per pound of ammonia do you need?
- 15
- 5
- 1
- 20
20: Liquid shall not occupy more than ____ of the volume when the temperature of the refrigerant is 90F.
- 80%
- 90%
- 75%
- 100%
21: The test pressure applied to the high side of each factory-assembled refrigerating system shall be at least equal to the design pressure of
- 2.5 times the design pressure
- the high side
- the low side
- the aggregate of the high side and low side
22: What type of material can't be used on the outlet of a relief valve?
- PVC
- Magnesium alloy
- Stainless steel
- Copper
23: Which refrigerant replaced R-12?
- R-407A
- R-410A
- R-22
- R-134A
24: The Board of Boilers adopts by reference
- the MACS Pressure Vessel Code of Massachusetts
- MSCA Code
- Montreal Protocol Safety Code
- the 1997 ANSI/ASHRAE Safety Code
25: The Department that certifies the transportation of refrigerant is the
- EPO
- RSES
- EPA
- DOT