Topics: ASHRAE/CMR
1: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.
- 15
- 75
- 20
- 50
2: What refrigerant doesn't have to be classifted?
- R-134a
- R-718
- R-711
- R-717
3: R-11 belongs to Group
- B-3
- A-2
- A-1
- B-1
4: How are refrigerant blends classified?
- Based on worst case fractionation
- Based on best case Fractionation
- Blends don't have to be classified
- Based on the oil used
5: Halo-carbon refrigerants cannot be used with what material?
- Aluminum
- Magnesium alloy
- Stainless Steel
- Copper
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: 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
8: 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
9: When releasing a hydrogenated hydrocarbon refrigerant to the atmosphere, ample ventilation must be provided and
- explosion precautions must be taken
- the owner shall be informed
- gas masks must be worn
- no flames shall be permitted
10: A machine room with a refrigerant system using ammonia shall
- be provided with a continuously operated ventilation system
- be considered a non-hazardous location in accordance with National Electrical code
- have no flame producing apparatus permanently installed and operated
- All of the above
11: Pressure vessels having an inside diameter of 6” or less shall be protected by
- Pressure vessels having an inside diameter of 6” or less need no such protection unless otherwise specified
- either a fusible plug or a pressure relief device
- a pressure relief device
- a fusible plug
12: Machinery rooms must be vented to ______?
- neutralizing tank
- basement
- outdoors
- unoccupied spaces
13: Trichlorofluoromethane is the name of what refrigerant?
- R-11
- R-12
- R-113
- R-502
14: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.
- UL and UR
- UL and UM
- UV or UR
- UM or UL
15: All serviceable components of a refrigeration system shall be provided with
- safe access
- name plates with markings referring to pressure and temperature in accordance with ASME Boiler and Pressure Vessel Code
- service manuals
- manufactures instructions on start-up procedures
16: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
- 550 lbs
- 330 lbs.
- 55 lbs
- 660 lbs
17: Can ammonia be used on domestic system?
- no, unless there is proper ventilation system installed
- no
- yes, for systems under 10 tons
- yes
18: Low temperature systems should have what?
- High pour point
- Low pour point
- High viscosity
- None of the above
19: 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
20: When is the only time you can leave a service container attached to a system?
- Leaking system
- Recovery
- Charging
- Both b and c
21: Large mercantile occupancy is
- a premise or that portion of a premise where more than 1500 persons congregate on levels above or below street level to purchase personal merchandise
- a premise of that portion of a premise where more than 50 persons congregate on levels above of below street level to purchase personal merchandise.
- a premise or that portion of a premise where more than 200 persons congregate on levels above or below street level to purchase personal merchandise
- a premise of that portion of a premise where more than 100 persons congregate on levels above of below street level to purchase personal merchandise.
22: When must refrigeration system covered by the code be inspected?
- Not required
- Annually
- Annually and when installed
- Upon installation
23: A class B2 refrigerant is considered
- toxic and somewhat flammable
- non-toxic and non-flammable
- non-toxic and highly flammable
- toxic and non-flammable
24: Ammonia (NH3) is a group III refrigerant
- True
- False
25: 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