Topics: ASHRAE/CMR
1: _____ alloys shall not be used in contact with an halogenated refrigerants.
- Copper
- Nickel
- Zinc
- Magnesium
2: Liquid level gauges shall have _____________ with one exception being that of the liquid level gauge bull’s eye type.
- color-coded glass to determine type of refrigerant
- moisture indicators
- automatic closing shut-off valves
- All of the above
3: What is the intention of the word “shall” as used in the code?
- A mandatory requirement
- A recommendation or advisory guideline
- A technician’s choice of how it should be done
- None of the above
4: How much refrigerant can be stored in a mechanical room outside of the system?
- 100
- 200
- 150
- 330
5: A restaurant is classified as a
- public assembly occupancy
- large mercantile occupancy
- mixed occupancy
- commercial occupancy
6: Indirect systems using Group II refrigerants
- shall be used for mechanical equipment only
- shall be used in refrigeration system less than 1,000 lbs
- shall be used in refrigeration system in excess of 1,000 lbs
- shall have all refrigerant containing parts except piping, installed in a Class T machine room
7: The main purpose of a refrigerant detector in a machinery room is to
- inform there is a refrigerant leak int he system
- detect toxins in the air caused by a refrigerant leak
- to set off an alarm when there is refrigerant present inside the room
- all of the above
8: What is R-611’s ASHRAE Safety Code?
- B2
- B3
- C3
- A2
9: What refrigerant doesn't have to be classified?
- R-718
- R-134A
- R-422A
- R-717
10: 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
11: Most CFC's are
- inert
- toxic
- inert but toxic
- flammable
12: What would be the classification of a church?
- Place of assembly
- Institutional
- Large mercantile
- Industrial
13: Where are the three places that the discharge from an ammonia relief valve be piped?
- To chemical neutralizing tank only
- Underground, into drain, into mechanical room
- Atmosphere, Tank containing water, where the AHJ indicates.
- None of the above.
14: Which of the following is an inorganic refrigerant?
- R-22
- Ammonia
- Chlorofluorocarbons
- All of the above
15: What refrigerant were phased out in 2004?
- R-12
- R-11
- R-22
- R-134a
16: Joints in refrigeration piping must be _____ before being covered?
- Pressurized
- Leak tested
- Insulated
- Inspected
17: The Board of Boilers adopts by reference
- MSCA Code
- Montreal Protocol Safety Code
- the 1997 ANSI/ASHRAE Safety Code
- the MACS Pressure Vessel Code of Massachusetts
18: When should a relief valve start to function?
- Two times it's working pressure
- Before the purge station discharges
- 10 psi before it's set pressure
- At it's set pressure
19: R-22 is considered a(n)
- HCFCH
- HFC
- CFC
- HCFC
20: Pressure vessels of 10 cubic feet or more gross volume shall use
- at least one rupture member
- a dual pressure-relief valve if charging into the atmosphere
- at least three means of discharge and/or rupture discs
- both a and b are correct
21: What section governs pressure vessels?
- Section 1 ASHREA 15 ASME fired
- Section ASHREA 34
- OSHA
- Section 8 ASHREA 15 ASME unfired
22: A pressure relief should be located at least _______ from windows and doors.
- 30'
- 15'
- 20'
- 25'
23: B3 refrigerants are considered
- toxic and highly flammable
- non-toxic but non-flammable
- toxic but non-flammable
- non-toxic but flammable
24: 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
25: Pressure vessels with an internal volume of 3 cubic feet or less
- do not need pressure relief protection
- shall use pressure relief devices
- shall use fusible plugs
- shall use pressure relief devices or fusible plugs