Topics: ASHRAE/CMR
1: The certificate of inspection
- shall be authorized by a notarized insurance company
- shall be $20 and an additional fee of $1 for each tone above 20 tons
- shall be posted and protected from dirt, water, and other elements
- shall be posted on the compressor shell or electrical panel at the unit
2: pressure relief valves must discharge to the atmosphere at a location not less than 15 feet from ground level and ____ feet from any window, ventilation opening, or exits of buildings.
- 20
- 10
- 15
- 25
3: A class A3 refrigerant is considered
- non-toxic but highly flammable
- non-toxic and non-flammable
- toxic and non-flammable
- toxic and somewhat flammable
4: _____ and its alloys are suitable for use with ammonia systems.
- Aluminum
- Copper
- Magnesium
- Zinc
5: What is the refrigerant chlorodifluoromethane?
- R-134a
- R-12
- R-22
- R-123
6: 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
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: A declaration test is needed when the system contains more than
- 110 lbs
- 55 lbs
- 65 lbs
- 120 lbs
9: Which refrigerant class listed below is the most flammable?
- A-1
- C-3
- B-2
- A-3
10: Can you use Ammonia in industrial applications?
- Yes, always
- Yes, Under certain condidtions
- No, never
- When mixed with R-718
11: Class 3 refrigerants are
- highly flammable
- non-flammable
- toxic
- non-toxic
12: Refrigerant piping crossing an open space that affords passageway in any building shall not be less than _____ feet above the floor unless piping is located against the ceiling.
- 9.00'
- 8'4"
- 7.00'
- 7.25'
13: Pipe identification labels are required when the system contains more than
- 55 lbs
- 120 lbs
- 110 lbs
- 65 lbs
14: 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.
- 2.5, 3.0
- 3.0, 3.5
- 6.6, 6.6
- 2.5, 2.5
15: 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
16: 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
17: Doors communicating with outside from a mechanical room must be?
- Self-closing, wooden, fire door
- Self-closing, approved, fire door
- Self-closing, aligned, fire door
- Steel, approved, weather-stripped
18: When air is ducted through a machine room that services occupied space, What must be done?
- Ducted and sealed
- Insulated and cross broke
- Welded and seamed.
- Flanged and gasketed
19: R-12. R-22, and R-40 are considered Group I refrigerants.
- True
- False
20: Ammonia (NH3) is a group III refrigerant
- True
- False
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
- 15
- 50
- 75
22: What would be the classification of a church?
- Institutional
- Industrial
- Place of assembly
- Large mercantile
23: What type of relief valve is used on low pressure centrifugal compressor systems?
- Spring-loaded relief valve
- Rupture disc
- Purge relief
- None of the above
24: A factory-sealed system containing less than 22lbs. of Group A1 refrigerant
- shall have a pressure limiting device installed on the high side of the system
- shall have a pressure limiting device and a pressure relief valve installed
- shall be inspected by the Boiler of Inspectors bi-annually
- does not require a pressure-limiting device
25: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
- 330 lbs
- 55 lbs
- 660 lbs
- 500 lbs