Topics: ASHRAE/CMR
1: What refrigerant doesn't have to be classified?
- R-134A
- R-718
- R-717
- R-422A
2: System design pressures must take into consideration, not only, pressures found during normal operation but also what?
- When it's cold out
- When there is a malfunction on the high side
- When its warm out
- All of the above
3: Halo-carbon refrigerants cannot be used with what material?
- Aluminum
- Magnesium alloy
- Copper
- Stainless Steel
4: When air is ducted through a machine room that services occupied space, What must be done?
- Flanged and gasketed
- Insulated and cross broke
- Welded and seamed.
- Ducted and sealed
5: What would be the classification of a prison?
- Industrial
- Institutional
- Place of assembly
- Large mercantile
6: R-22 is classified as a ____ refrigerant on the safety matrix.
- B-1
- A-2
- A-1
- B-2
7: Which refrigerant class listed below is the most flammable?
- B-2
- C-3
- A-1
- A-3
8: What does safe access mean?
- OSHA approved
- Locked doors
- A clear unobstructed path to the equipment and controls
- Well-lit exit signs
9: R-11 belongs to Group
- A-1
- B-1
- A-2
- B-3
10: 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 low side
- 2.5 times the design pressure
- the aggregate of the high side and low side
- the high side
11: What is not a requirement of a Class T machine room?
- Self-closing doors
- Tight fitting doors
- Automatic ventilation
- Fire hose connected to the building fire protection system.
12: The certificate of inspection
- shall be posted on the compressor shell or electrical panel at the unit
- shall be $20 and an additional fee of $1 for each tone above 20 tons
- shall be authorized by a notarized insurance company
- shall be posted and protected from dirt, water, and other elements
13: Trichlorofluoromethane is the name of what refrigerant?
- R-11
- R-502
- R-113
- R-12
14: Liquid level gauge glasses shall have automatic closing shut off valves, except Bull's eye or reflex type.
- True
- False
15: When an inspection is needed, how often must it be done?
- every 18 months
- annually
- every 36 months
- every 24 months
16: Who authorizes changes to the safety codes?
- Person who pulled the permit
- Person in charge of the facility
- Contractor who last serviced the system.
- Board of Boilers
17: Direct systems using Group II refrigerants
- shall be installed in Class T machinery rooms
- shall not be used for air condition for human comfort
- shall be installed per instruction of the AHJ
- shall be allowed to be used for human comfort.
18: 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
19: Ammonia (NH3) is a group III refrigerant
- True
- False
20: Machinery rooms must be vented to ______?
- unoccupied spaces
- outdoors
- basement
- neutralizing tank
21: What would be the classification of a church?
- Institutional
- Industrial
- Large mercantile
- Place of assembly
22: R-22 is considered a(n)
- CFC
- HCFC
- HFC
- HCFCH
23: Low temperature systems should have what?
- High pour point
- Low pour point
- High viscosity
- None of the above
24: No open flames are allowed in the machinery room unless?
- Approved by the installing contractor
- Never can be allowed
- Approved by the authorized person
- Only when combustion air is provided from outside of the machinery room
25: How much refrigerant can be stored in a mechanical room outside of the system?
- 200
- 100
- 150
- 330