Topics: ASHRAE/CMR
1: When a refrigeration or air conditioning system is installed
- it shall not be operated below prescribed pressures
- the form of certificate shall be authorized by the Department of Pubic safety
- a field inspection shall be made before it is put into service
- it shall be approved by the owner for proper operation.
2: 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
3: 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
4: The test pressure applied to the high side of each factory-assembled refrigerating system shall be at least equal to the design pressure of
- the aggregate of the high side and low side
- the low side
- the high side
- 2.5 times the design pressure
5: Dual-pressure relief devices should be installed on
- vessels of 10 cubic feet or more
- vessels of 10 cubic feet or less
- vessels of 3 cubic feet or less
- vessels of 3 cubic feet or more
6: What is an example of institutional occupancy?
- Shopping mall
- Dorms
- Football stadium
- Hospital
7: Refrigerant restricted in 2004 but used for transition for decades:
- R-123
- R-22
- R-134A
- R-11
8: The discharge relief valve is located (9.4.6)
- between the compressor and reciever
- between the compressor and the stop valve
- on top of the condensor
- between the compressor and oil separator
9: Who authorizes changes to the safety codes?
- Contractor who last serviced the system.
- Board of Boilers
- Person who pulled the permit
- Person in charge of the facility
10: What refrigerant doesn't have to be classifted?
- R-717
- R-134a
- R-718
- R-711
11: Halo-carbon refrigerants cannot be used with what material?
- Stainless Steel
- Magnesium alloy
- Aluminum
- Copper
12: Walls and doors of a machinery room shall be at least _____ hour(s) fire rated.
- 3
- 5
- 2
- 1
13: 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
14: What is the refrigerant chlorodifluoromethane?
- R-12
- R-22
- R-134a
- R-123
15: 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
16: An evaporator coil located near heating coil shall have a pressure-relief device installed within ______ inches of the evaporator.
- 24
- 48
- 18
- 36
17: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.
- UM or UL
- UL and UR
- UV or UR
- UL and UM
18: All electrical work done on refrigeration systems must comply with
- ASHREA-15 Section 9.2.1
- OSHA
- NEC and Massachusetts Modifications
- Department of Energy
19: A High-Probablity system
- is such that a leak of refrigerant from failed connections will enter the occupied space
- is such that a leak of refrigerant from failed connections will enter the unoccupied 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 from a failed connection or component of such system
20: What refrigerant were phased out in 2004?
- R-11
- R-22
- R-12
- R-134a
21: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.
- 33
- 22
- 18
- 50
22: 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
23: 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
24: R-12. R-22, and R-40 are considered Group I refrigerants.
- True
- False
25: What happens after your initial inspection of a pressure vessel?
- Notify the Fire Marshal that the system has been inspected and approved
- There is a temporary shut-down until a final inspection can be performed.
- Inspector leaves a metal tag with a certification listed on it
- Notify the AHJ to let them know that the system been inspected