Topics: ASHRAE/CMR
1: How much clearance do you need around the perimeter of electrical panels?
- 12"
- 36"
- 24"
- 18"
2: Which of the following are considered inorganic refrigerants?
- R-717 and R-718
- 410A and R-407C
- R-500 and R-502
- None of the above
3: A premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space such as auditoriums, ballrooms, classrooms, passenger depots, restaurants, and theaters is considered a(n)
- illegal occupancy
- public assembly occupancy
- institutional occupancy
- commercial occupancy
4: The Department that certifies the transportation of refrigerant is the
- EPA
- EPO
- DOT
- RSES
5: All welding done on any refrigeration system or piping covered by 522 CMR 9.00 shall be performed by a according to Section IX of the ASME code
- licensed technician
- competent welder
- welder qualified
- licensed welder
6: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.
- True
- False
7: A restaurant is classified as a
- public assembly occupancy
- commercial occupancy
- mixed occupancy
- large mercantile occupancy
8: An example of direct system is
- rooftop unit
- chiller
- absorber
- none of the above
9: What type refrigerant is NOT ozone depleting?
- CFC
- HCFC
- HFC
- Halon
10: 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.
- 100
- 50
- 350
- 550
11: How are refrigerant blends classified?
- Blends don't have to be classified
- Based on worst case fractionation
- Based on best case Fractionation
- Based on the oil used
12: A plug containing an alloy that will melt at a specific temperature to relief pressure is a
- fusible plug
- rupture plug
- relief plug
- fusion plug
13: 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
14: The ____ design is the maximum pressure for which a specific part of a refrigeration system is designed.
- critical pressure
- design pressure
- high pressure
- low pressure
15: Evaporators within 18" of a heating coil must be equipped with a
- low limit control
- zone valve
- pressure relief device
- high limit control
16: A Low-Probability System
- is such that a leak of refrigerant from a failed connection will 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
- is such that a leak of refrigerant from a failed connection can not enter the occupied space
17: B3 refrigerants are considered
- toxic and highly flammable
- non-toxic but flammable
- non-toxic but non-flammable
- toxic but non-flammable
18: Pressure limiting devices are not required for systems containing less then ________ refrigerants.
- 22 lbs
- 6.6 lbs
- 44 lbs
- 13.9 lbs
19: The pressure relief device of a positive displacement compressor shall discharge in the ______________or in accordance with 9.7.8
- high side of the system
- the liquid side of the system
- the vapor side of the system
- low side of the system
20: What type of copper is not permitted on refrigeration systems?
- Type N
- Type K
- Type M
- Type L
21: Relief valves are rated in
- gallons of water per hour
- pounds of air per hour
- gallons of water per minute
- pounds of air per minute
22: How many refrigerant classifications are there for flammability?
- 1
- 3
- 7
- 2
23: Pressure relief valves shall be marked with the data from
- Section VIII Division of the ASME Boiler & Pressure Code
- Section I Division VIII of ASME Boiler & Pressure Code
- Section IV Division of the ASME Boiler & Pressure Code
- Section XIII Division of the ASME Boiler & Pressure Code
24: R-718 is rated unlimited for refrigeration quantity contained in a system. Why?
- Because it's a non-flammable refrigerant
- Because it's water
- Because it's cheap
- R-718 is not rated unlimited because it's a dangerous refrigerant
25: R-22 is considered a(n)
- HCFC
- HFC
- HCFCH
- CFC