Topics: ASHRAE/CMR
1: Pipe identification labels are required when the system contains more than
- 65 lbs
- 120 lbs
- 55 lbs
- 110 lbs
2: A professional or office building would be considered what type of occupancy?
- business
- public assembly
- mercantile
- commercial
3: What pipe can not be used for refrigeration?
- N
- M
- K
- L
4: 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 liquid side of the system
- the vapor side of the system
- high side of the system
5: What refrigerant is an inorganic compound?
- R-132A
- R-410A
- R-22
- Ammonia
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: The color code of a tank of ammonia is
- light green
- white
- silver
- lavender
8: A pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.
- 50
- 25
- 22
- 66
9: Group A2 refrigerants have a ______ toxicity rating than Group B1 refrigerants.
- lower
- there is no Group B1 refrigerants
- higher
- the same
10: How many CFMs are required per square foot of commercial office occupied space
- .5 CFM
- 15 CFM
- 20 CFM
- 5 CFM
11: What type of pressure relief device is used on a CO2 system?
- Gate valve
- Rupture disk
- Glove valve
- Fusible plug
12: What would be the classification for Stop & Shop grocery store?
- Large mercantile
- Place of assembly
- Industrial
- Instituional
13: R-123 belongs to Group
- B-3
- B-1
- A-3
- B-2
14: _____ alloys shall not be used in contact with an halogenated refrigerants.
- Copper
- Magnesium
- Nickel
- Zinc
15: What do you need to do when you install a new system?
- Insulate the suction line before you take a superheat reading
- Have it inspected
- Document the superheat and subcooling reading
- Add refrigerant
16: When must refrigeration system covered by the code be inspected?
- Not required
- Annually
- Annually and when installed
- Upon installation
17: Pressure vessels with an internal volume of 3 cubic feet or more
- do not need pressure relief protection
- shall use pressure relief devices or fusible plugs
- shall use fusible plugs
- shall use pressure relief devices
18: 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
19: 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
20: Doors communicating with outside from a mechanical room must be?
- Self-closing, aligned, fire door
- Self-closing, approved, fire door
- Steel, approved, weather-stripped
- Self-closing, wooden, fire door
21: What is the minimum height refrigeration piping should be placed against walls?
- 72"
- 7.25'
- Ceiling height
- 6'
22: A class B2 refrigerant is considered
- toxic and somewhat flammable
- non-toxic and non-flammable
- non-toxic and highly flammable
- toxic and non-flammable
23: What is an example of institutional occupancy?
- Football stadium
- Hospital
- Shopping mall
- Dorms
24: A pressure vessel having an inside diameter of 6” or less shall be sufficient to withstand ____times the pressure of the saturation temperature of the refrigerant or ____times the critical pressure of the refrigerant, whichever is less.
- 6.6, 6.6
- 3.0, 3.5
- 2.5, 2.5
- 2.5, 3.0
25: What refrigerant doesn't have to be classified?
- R-134A
- R-717
- R-718
- R-422A