Topics: ASHRAE/CMR
1: What is an example of institutional occupancy?
- Shopping mall
- Hospital
- Football stadium
- Dorms
2: What refrigerant were phased out in 2004?
- R-11
- R-22
- R-134a
- R-12
3: All welding done on any refrigeration system or piping covered by 522 CMR 9.00 shall be performed by a according to Section IX of the ASME code
- licensed welder
- competent welder
- licensed technician
- welder qualified
4: Pressure vessels with an internal volume of 3 cubic feet or more
- shall use pressure relief devices or fusible plugs
- shall use fusible plugs
- shall use pressure relief devices
- do not need pressure relief protection
5: Pressure vessels with an internal volume of 3 cubic feet or less
- shall use fusible plugs
- shall use pressure relief devices or fusible plugs
- shall use pressure relief devices
- do not need pressure relief protection
6: Pressure vessels with an internal volume of 10 cubic feet or more
- shall use rupture discs or duel pressure relief valves
- shall use pressure relief devices
- shall use pressure relief devices or fusible plugs
- shall use fusible plugs
7: A Category D fluid
- is when the fluid handled is non flammable, nontoxic, and not damaging to human as defined in ANSI/ASME Process Piping.
- is when the design pressure does not exceed 150 psi
- a fluid for service piping in which the potential for personnel exposure is judged to cause harm and irreversible damage to those persons exposed to it
- Both a and b are correct
8: The main cause of enacting the "no vending rule" of July 1st 1992 was
- global warming potential
- ozone depletion
- both a & b
- None of the above
9: How many refrigerant classifications are there for toxicity?
- 2
- 5
- 1
- 3
10: How many refrigerant classifications are there for flammability?
- 2
- 3
- 1
- 7
11: When this is installed on the high side of a system, it must be capable of reading 1.2 times the design pressure (ASHRAE 15 9.11.3)
- Pressure gauge
- Temperature gauge
- Sight glass gauge
- All of the above
12: 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
- the liquid side of the system
- low side of the system
- high side of the system
13: What must be done to refrigerant pipes before being buried ?(8.10.4)
- Certified
- Classifed
- Leak checked
- Insulated and installed in a pipe duct (Encased)
14: Ammonia can come in contact with _______ ?
- Brass
- Copper tubing
- Aluminum
- Copper
15: Setting a pressure relief device shall not exceed ___ of the design pressure
- 75%
- 80%
- 100%
- 90%
16: What section governs pressure vessels?
- Section 8 ASHREA 15 ASME unfired
- OSHA
- Section ASHREA 34
- Section 1 ASHREA 15 ASME fired
17: Liquid level gauge glasses shall have automatic closing shut off valves, except Bull's eye or reflex type.
- True
- False
18: What is R-22?
- HFC
- CCFCM
- Chlorodifluoromethane
- Chlorofluoromethane
19: What is the refrigerant chlorodifluoromethane?
- R-12
- R-22
- R-134a
- R-123
20: Field Inspections of refrigeration and A/C systems in Massachusetts shall be made by
- District Engineering Inspectors
- Commissioned Inspectors
- Master licensed Technician
- both a or b
21: How many different groups of refrigerants are there?
- 7
- 15
- 3
- 11
22: A hotel is considered a _______ occupancy.
- institutional
- commercial
- mercantile
- residential
23: Machinery rooms shall be vented to _____________ and utilizing mechanical ventilation.
- the mechanical room housing the refrigeration system
- the outdoors
- Machinery rooms need not be vented
- the return air ducted system
24: R-22 is considered a(n)
- HCFC
- CFC
- HCFCH
- HFC
25: Most CFC's are
- toxic
- flammable
- inert but toxic
- inert