Topics: ASHRAE/CMR
1: A movie theater would be considered a
- commercial occupancy
- public assembly occupancy
- mixed occupancy
- institutional occupancy
2: _____ alloys shall not be used in contact with an halogenated refrigerants.
- Copper
- Magnesium
- Zinc
- Nickel
3: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code
- over pressure protection
- Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
- over pressure protection as well as a temperature protection device
- over pressure protection and a rupture disc
4: R-22 is considered a(n)
- HCFCH
- HFC
- CFC
- HCFC
5: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered
- public assembly occupancy
- mixed occupancy
- commercial occupancy
- institutional occupancy
6: How many flammability classifications are refrigerants in?
- 5
- 3
- 2
- 7
7: What is the minimum size of the discharge pipe?
- Same size as the outlet of the relief valve
- One pipe size larger that the inlet of the relief valve
- Depends on size of manifold
- All of the above
8: A class B2 refrigerant is considered
- non-toxic and non-flammable
- toxic and non-flammable
- non-toxic and highly flammable
- toxic and somewhat flammable
9: Before determining if a machinery room equipment is excluded from following Ashrae 15, you must determine how many pounds of refrigerant per _____ cubic feet?
- 100,000
- 10,000
- 1,000
- 100
10: All serviceable components of a refrigeration system shall be provided with
- manufactures instructions on start-up procedures
- safe access
- name plates with markings referring to pressure and temperature in accordance with ASME Boiler and Pressure Vessel Code
- service manuals
11: Stop valves shall not be permitted between the system and the
- relief valve
- service valve
- condenser
- bleed valve
12: When a receiver is greater than 3 cubic feet but less than 10 cubic feed, what is the minimum relief device required?
- fusible plug
- relief valve
- rupture disc
- all of the above
13: What refrigerant doesn't have to be classifted?
- R-717
- R-134a
- R-711
- R-718
14: Each machinery room shall contain
- a refrigerant detector located in an area where the refrigerant from a leak will concentrate
- high and low pressure controls
- a toxicity detector where the presence of ammonia or lithium bromide from a leak will concentrate
- smoke and fire alarms as well as three means of egress and that egress must meet 528 CMR ventilation requirements
15: R-123 belongs to Group
- B-2
- B-3
- A-3
- B-1
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: When air is ducted through a machine room that services occupied space, What must be done?
- Flanged and gasketed
- Welded and seamed.
- Ducted and sealed
- Insulated and cross broke
18: 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
19: Ammonia can come in contact with _______ ?
- Aluminum
- Copper
- Copper tubing
- Brass
20: How much clearance do you need around the perimeter of electrical panels?
- 12"
- 18"
- 36"
- 24"
21: Large Mercantile occupancy is a premise or that portion of a premise where more than ____ persons congregate on levels above or below the street level to purchase personal merchandise.
- 400
- 350
- 100
- 250
22: Setting a pressure relief device shall not exceed ___ of the design pressure
- 100%
- 90%
- 80%
- 75%
23: 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
24: Who approves containers for refrigerants?
- D.O.E
- D.O.D
- E.P.A
- D.O.T
25: R-410A is classified as a ____ refrigerant on the safety matrix.
- A-2
- A-1
- B-2
- B-1