Topics: ASHRAE/CMR
1: How many gallons of water do you need per pound of ammonia?
- 1
- 50
- 100
- 10
2: How many different groups of refrigerants are there?
- 15
- 3
- 7
- 11
3: Class 3 refrigerants are
- highly flammable
- toxic
- non-flammable
- non-toxic
4: 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
5: What refrigerant has zero ozone depletion
- HFC
- CFC
- HCFC
- None of the above
6: How many flammability classifications are refrigerants in?
- 5
- 3
- 2
- 7
7: Group A3 refrigerants have a ______ flammability rating than Group B1 refrigerants
- higher
- there is no Group B1 refrigerants
- lower
- the same
8: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.
- UM or UL
- UV or UR
- UL and UM
- UL and UR
9: R-717 is
- carbon dioxide
- ammonia
- trichloromethane
- water
10: 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
11: What type refrigerant is NOT ozone depleting?
- CFC
- Halon
- HFC
- HCFC
12: Relief valves are rated in
- gallons of water per minute
- pounds of air per hour
- pounds of air per minute
- gallons of water per hour
13: Liquid level gauges must be provided with what?
- A relief valve
- A red line
- A low level mark
- Automatic shut-offs
14: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered
- commercial occupancy
- institutional occupancy
- public assembly occupancy
- mixed occupancy
15: Can ammonia be used on domestic system?
- yes, for systems under 10 tons
- yes
- no, unless there is proper ventilation system installed
- no
16: When a pressure gauge is permanently installed on a system, it must be ___ times the design pressure of the system.
- 1
- 1.5
- 2.2
- 1.2
17: What would be the classification of a prison?
- Place of assembly
- Industrial
- Institutional
- Large mercantile
18: How many groups of refrigerants are there?
- 3
- 1
- 5
- 7
19: What is the minimum height refrigeration piping should be placed against walls?
- 6'
- 7.25'
- 72"
- Ceiling height
20: Evaporators located ____inches of a heating coil shall be equipped whit a pressure relief device.
- 10
- 15
- 24
- 18
21: When air is ducted through a machine room that services occupied space, What must be done?
- Insulated and cross broke
- Flanged and gasketed
- Welded and seamed.
- Ducted and sealed
22: When must refrigeration system covered by the code be inspected?
- Upon installation
- Not required
- Annually and when installed
- Annually
23: What is a Category "D" fluid?
- A fluid which is nonflammable, nontoxic, not damaging to human tissues, does not exceed 150 psig, and design temperature is between -20F to 366F
- A typical refrigerant used on newer air conditioning and heat pump ssytems
- Any fluid that exceeds 150 psig and has design temperature of over 366F
- A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily contact
24: Fusible plugs shall not be used with pressure vessels of
- 3 cubic feet or less
- 3 cubic feet or more
- 15 square feet or less
- 15 cubic feet or more
25: What type of material can't be used on the outlet of a relief valve?
- Stainless steel
- Copper
- Magnesium alloy
- PVC