Topics: ASHRAE/CMR
1: R-718 is rated unlimited for refrigeration quantity contained in a system. Why?
- R-718 is not rated unlimited because it's a dangerous refrigerant
- Because it's a non-flammable refrigerant
- Because it's cheap
- Because it's water
2: What would be the classification of a prison?
- Place of assembly
- Industrial
- Institutional
- Large mercantile
3: What is the intention of the word “shall” as used in the code?
- A mandatory requirement
- A recommendation or advisory guideline
- A technician’s choice of how it should be done
- None of the above
4: Who authorizes the form of certificate of completion of refrigeration systems that should be used?
- Supervisor or project manager in charge of the installation
- Fire Marshal
- Massachusetts Board of Boiler Rules
- Owner
5: A declaration test is needed when the system contains more than
- 110 lbs
- 65 lbs
- 120 lbs
- 55 lbs
6: What refrigerant doesn't have to be classified?
- R-717
- R-422A
- R-134A
- R-718
7: Ammonia belongs to Group
- A-1
- B-1
- B-2
- A-2
8: What must be done to refrigerant pipes before being buried?
- Coated
- Encased
- Leaked checked
- Certified
9: copper and its alloys shall not be used in contact with _____ except as a component of bronze alloys for bearing or other non-refrigerant containing uses.
- ammonia
- HCFC-123
- CFC-11
- Lithium bromide
10: 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
11: 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
12: 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
13: How much refrigerant can be stored in a mechanical room outside of the system?
- 150
- 200
- 330
- 100
14: R-123 belongs to Group
- B-1
- B-3
- B-2
- A-3
15: When a refrigeration or air conditioning system is installed
- it shall be approved by the owner for proper operation.
- it shall not be operated below prescribed pressures
- a field inspection shall be made before it is put into service
- the form of certificate shall be authorized by the Department of Pubic safety
16: Refrigerant restricted in 2004 but used for transition for decades:
- R-134A
- R-123
- R-11
- R-22
17: Trichlorofluoromethane is the name of what refrigerant?
- R-502
- R-12
- R-113
- R-11
18: 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
19: What is not a requirement of a Class T machine room?
- Tight fitting doors
- Automatic ventilation
- Fire hose connected to the building fire protection system.
- Self-closing doors
20: A relief valve discharge capacity is rated in
- PSIA
- PSIG
- Pounds of air per minute.
- temperature minus pounds of air per second divided by release rate squared
21: What is the refrigerant chlorodifluoromethane?
- R-134a
- R-12
- R-22
- R-123
22: Before you change the type of refrigerant in a refrigeration system, what three things must be done?
- Place sign, check for leaks, and insulate suction line
- Make sure its compatible, notify owner, and notify AHJ.
- Nothing must be done
- you can never change refrigerants
23: Refrigeration piping before being buried shall be
- leak tested
- encased in pipe duct
- pressure tested
- All of the above
24: What type of pressure relief device is used on a CO2 system?
- Gate valve
- Rupture disk
- Fusible plug
- Glove valve
25: What section of ASHRAE-15 governs pressure vessels?
- Section 7 ASHRAE-15 ASME VIII fired
- Section 6 ASHRAE-34 ASME VIII unfired
- OSHA
- Section 9 ASHRAE-15 ASME VIII unfired