Topics: ASHRAE/CMR
1: Pressure vessels with an internal volume of 3 cubic feet or more
- shall use pressure relief devices
- shall use fusible plugs
- do not need pressure relief protection
- shall use pressure relief devices or fusible plugs
2: Where must a refrigeration contractor's license number be displayed?
- Trucks, invoices, and advertising
- Uniforms, checks, and invoices.
- Truck, office, every job, and on all equipment
- Trucks, license plates, and uniforms
3: 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
4: A person holding a license as a refrigeration technician may connect or disconnect for the purpose of installation, repair, or replacement, any electrical device or control to be a part of a refrigeration or air conditioning system, from the
- load-side of the contactor in
- breaker panel in
- 24 volt secondary side of the Class 2 transformer to the thermostat
- first disconnect in
5: The test pressure applied to the high side of each factory-assembled refrigerating system shall be at least equal to the design pressure of
- the low side
- the aggregate of the high side and low side
- the high side
- 2.5 times the design pressure
6: Can you use Ammonia in industrial applications?
- No, never
- When mixed with R-718
- Yes, Under certain condidtions
- Yes, always
7: How many refrigerant classifications are there for toxicity?
- 2
- 3
- 1
- 5
8: A room having machinery but no flame producing apparatus permanently installed and operated is considered a
- Class T machinery room
- Class M machinery room
- Class B machinery room
- Class A machinery room
9: A High-Probablity system
- is such that a leak of refrigerant from failed connections will enter the occupied space
- is a system highly likely to leak from a failed connection or component of such system
- is such that any leak will cause injury or death to anyone within a 100 square foot area
- is such that a leak of refrigerant from failed connections will enter the unoccupied space
10: Ammonia can come in contact with _______ ?
- Brass
- Aluminum
- Copper tubing
- Copper
11: A pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.
- 50
- 25
- 66
- 22
12: What should not (and can not) be located between a pressure imposing device and a pressure-limiting device?
- Muffler
- Stop valve
- Foot valve
- Moisture indicator
13: A Low-Probability System
- is such that a leak of refrigerant from a failed connection will enter the occupied space
- is such that a leak of refrigerant from a failed connection can not enter the occupied space
- is such that any leak will cause injury or death to anyone within a 100 square foot area
- is a system highly likely to leak form a failed connection or component of such system
14: _____ alloys shall not be used in contact with an halogenated refrigerants.
- Magnesium
- Copper
- Zinc
- Nickel
15: Defined process piping by code CMR (528)
- Any piping that conveys a solid, liquid or gas that is not part of the plumbing or fire protection system
- Any piping in an industrial space
- Any piping in an industrial or commercial space
- All of the above
16: Institutional occupancy is
- a premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space.
- a premise or that portion of a premise from which, because they are disabled, debilitated, or confined, occupants cannot readily leave without the assistance of others.
- a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
- None of the above
17: 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.
18: What section of ASHRAE-15 governs pressure vessels?
- Section 7 ASHRAE-15 ASME VIII fired
- Section 9 ASHRAE-15 ASME VIII unfired
- Section 6 ASHRAE-34 ASME VIII unfired
- OSHA
19: Which occupancy can ammonia be used in?
- industrial
- redifential
- depends on the quantity of freon
- commercial
20: Pipe identification labels are required when the system contains more than
- 110 lbs
- 55 lbs
- 120 lbs
- 65 lbs
21: Each machinery room shall contain
- smoke and fire alarms as well as three means of egress and that egress must meet 528 CMR ventilation requirements
- high and low pressure controls
- a toxicity detector where the presence of ammonia or lithium bromide from a leak will concentrate
- a refrigerant detector located in an area where the refrigerant from a leak will concentrate
22: Name a CFC refrigerant(s):
- R-11
- R-12
- R-123
- both a & b
23: What refrigerant is an inorganic compound?
- Ammonia
- R-410A
- R-132A
- R-22
24: How many different groups of refrigerants are there?
- 7
- 15
- 11
- 3
25: A total of all group A-2,B-2, A-3, and B-3 refrigerants shall not exceed ____ lb in the occupied areas and machinery rooms of institutional occupancies.
- 50
- 100
- 350
- 550