Topics: ASHRAE/CMR
1: How many groups of refrigerants are there?
- 7
- 5
- 3
- 1
2: Systems containing more than 110 pounds must have stop valves located at the
- compressor suction inlet
- compressor discharge outlet
- receiver inlet and outlet
- All of the above
3: Walls and doors of a machinery room shall be at least _____ hour(s) fire rated.
- 2
- 1
- 5
- 3
4: A 3-cubic foot receiver must have what type of relief valve?
- fusible plug
- relief valve
- rupture device
- none of the above
5: The ____ design is the maximum pressure for which a specific part of a refrigeration system is designed.
- critical pressure
- design pressure
- low pressure
- high pressure
6: What section of ASHRAE-15 governs pressure vessels?
- Section 9 ASHRAE-15 ASME VIII unfired
- OSHA
- Section 7 ASHRAE-15 ASME VIII fired
- Section 6 ASHRAE-34 ASME VIII unfired
7: A relief valve discharge capacity is rated in
- temperature minus pounds of air per second divided by release rate squared
- Pounds of air per minute.
- PSIG
- PSIA
8: A room having machinery but no flame producing apparatus permanently installed and operated is considered a
- Class T machinery room
- Class M machinery room
- Class B machinery room
- Class A machinery room
9: The Department that certifies the transportation of refrigerant is the
- EPA
- DOT
- EPO
- RSES
10: What would be the classification for Stop & Shop grocery store?
- Large mercantile
- Place of assembly
- Industrial
- Instituional
11: What does safe access mean?
- Locked doors
- Well-lit exit signs
- A clear unobstructed path to the equipment and controls
- OSHA approved
12: 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
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: An example of direct system is
- rooftop unit
- chiller
- absorber
- none of the above
15: Pressure vessels with an internal volume of 3 cubic feet or less
- shall use pressure relief devices or fusible plugs
- do not need pressure relief protection
- shall use pressure relief devices
- shall use fusible plugs
16: Pressure vessels nameplate markings must be compliant with the
- ASHRAE 34 Standards
- CMR-588 & CMR-528
- ASME Boiler and Pressure Vessel Code
- All of the Above
17: 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
18: What type of relief valve is used on a CO2 system?
- glove disc
- rupture disc
- gate valve
- fusible plug
19: Who authorizes changes to the safety codes?
- Contractor who last serviced the system.
- Person who pulled the permit
- Person in charge of the facility
- Board of Boilers
20: What must be done to refrigerant pipes before being buried?
- Certified
- Leaked checked
- Coated
- Encased
21: A pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.
- 25
- 50
- 66
- 22
22: _____ alloys shall not be used in contact with an halogenated refrigerants.
- Nickel
- Copper
- Magnesium
- Zinc
23: It shall be the duty of the person in charge of the premises on which a refrigeration system containing more than ___ lbs of refrigerant is installed to provide a schematic drawing or panel giving directions for the operation of the system.
- 75
- 15
- 55
- 50
24: Refrigeration piping before being buried shall be
- leak tested
- encased in pipe duct
- pressure tested
- All of the above
25: Group A1 refrigerants over ____ pounds in a system must discharge to the atmosphere
- 6.6
- 110
- 1,000
- 330