Topics: ASHRAE/CMR
1: Pressure vessels with an internal volume of 10 cubic feet or more
- shall use rupture discs or duel pressure relief valves
- shall use fusible plugs
- shall use pressure relief devices or fusible plugs
- shall use pressure relief devices
2: When is the only time you can leave a service container attached to a system?
- Leaking system
- Recovery
- Charging
- Both b and c
3: Most CFC's are
- flammable
- inert but toxic
- toxic
- inert
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 VIII Division of the ASME Boiler & Pressure Code
- Section I Division VIII of ASME Boiler & Pressure Code
5: Ammonia shall be discharged into ____________ or a tank containing one gallon of water for every pound of ammonia.
- the atmosphere
- a de-pressurized recovery tank with a silver top and yellow bottom
- a tank containing two pounds of a water/lithium bromide mix for every pound of ammonia
- All of the above
6: When must refrigeration system covered by the code be inspected?
- Upon installation
- Not required
- Annually and when installed
- Annually
7: Ammonia is under what safety classification?
- B1
- B3
- B2
- A3
8: 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
9: Which refrigerant was still able to be vented to the atmosphere after July 1, 1992?
- R-22
- R-11
- R-113
- R-12
10: The dial of a pressure gauge, when installed on the high side of a system be graduated 1.2 times the designed pressure.
- True
- False
11: What kind of material can't be used on the outlet of a relief valve?
- Copper
- Stainless Steel
- Aluminum
- PVC
12: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within
- 14 days
- 30 days
- 2 months
- 1 week
13: How many CFMs are required per square foot of commercial office occupied space
- .5 CFM
- 5 CFM
- 15 CFM
- 20 CFM
14: What would be the classification of a prison?
- Industrial
- Large mercantile
- Place of assembly
- Institutional
15: 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
16: 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
17: 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
18: 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.
19: An example of direct system is
- rooftop unit
- chiller
- absorber
- none of the above
20: When should a relief valve start to function?
- Before the purge station discharges
- Two times it's working pressure
- At it's set pressure
- 10 psi before it's set pressure
21: It shall be the duty of the person in charge of the premises on which a refrigeration system containing more than ___ lbs of refrigerant is installed to provide a schematic drawing or panel giving directions for the operation of the system.
- 55
- 50
- 15
- 75
22: What type of material can't be used on the outlet of a relief valve?
- PVC
- Copper
- Stainless steel
- Magnesium alloy
23: When testing systems using non-positive displacement compressors, the entire system shall be considered for test purposes as the low side.
- True
- False
24: What section governs pressure vessels?
- Section 1 ASHREA 15 ASME fired
- OSHA
- Section 8 ASHREA 15 ASME unfired
- Section ASHREA 34
25: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.
- True
- False