Topics: ASHRAE/CMR
1: 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
- 55
- 50
- 15
2: Institutional occupancy is
- a premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space.
- a premise or that portion of a premise from which, because they are disabled, debilitated, or confined, occupants cannot readily leave without the assistance of others.
- a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
- None of the above
3: What is the refrigerant dichlorodifluoromethane?
- R-123
- R-12
- R-134A
- R-22
4: High pressure controls should be set no higher than
- 80% of set point
- 10% of set point
- 25% of set point
- 90% of set point
5: What type of material can't be used on the outlet of a relief valve?
- PVC
- Magnesium alloy
- Stainless steel
- Copper
6: Joints in refrigeration piping must be _____ before being covered?
- Pressurized
- Inspected
- Leak tested
- Insulated
7: Class A refrigerants are considered
- non-flammable
- flammable
- non-toxic
- toxic
8: A room having machinery but no flame producing apparatus permanently installed and operated is considered a
- Class A machinery room
- Class T machinery room
- Class M machinery room
- Class B machinery room
9: The certificate of inspection
- shall be posted and protected from dirt, water, and other elements
- shall be authorized by a notarized insurance company
- shall be $20 and an additional fee of $1 for each tone above 20 tons
- shall be posted on the compressor shell or electrical panel at the unit
10: Most CFC's are
- flammable
- toxic
- inert
- inert but toxic
11: What refrigerant were phased out in 2004?
- R-22
- R-134a
- R-11
- R-12
12: Who authorizes changes to the safety codes?
- Board of Boilers
- Person in charge of the facility
- Person who pulled the permit
- Contractor who last serviced the system.
13: What type refrigerant is NOT ozone depleting?
- Halon
- HFC
- CFC
- HCFC
14: What should not (and can not) be located between a pressure imposing device and a pressure-limiting device?
- Muffler
- Foot valve
- Moisture indicator
- Stop valve
15: R-123 belongs to Group
- A-3
- B-3
- B-2
- B-1
16: Each machinery room shall contain
- high and low pressure controls
- a toxicity detector where the presence of ammonia or lithium bromide from a leak will concentrate
- smoke and fire alarms as well as three means of egress and that egress must meet 528 CMR ventilation requirements
- a refrigerant detector located in an area where the refrigerant from a leak will concentrate
17: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.
- True
- False
18: What happens after your initial inspection of a pressure vessel?
- Notify the Fire Marshal that the system has been inspected and approved
- Notify the AHJ to let them know that the system been inspected
- Inspector leaves a metal tag with a certification listed on it
- There is a temporary shut-down until a final inspection can be performed.
19: Which refrigerant(s) is an HFC?
- R-22
- R-410A
- R-502
- All of the above
20: R-11 belongs to Group
- B-1
- B-3
- A-1
- A-2
21: When liquid receivers are used, the liquid refrigerant shall not exceed _______percent of the volume at 90F.
- 99%
- 75%
- 80%
- 90%
22: Emergency shutdown procedures, including precautions to be observed in case of a breakdown or leak over 55 lbs of refrigerant charge, shall be displayed on a conspicuous card located as near as possible to the
- evaporator
- outside the machinery room
- boiler
- compressor
23: Where are the three places that the discharge from an ammonia relief valve be piped?
- To chemical neutralizing tank only
- Underground, into drain, into mechanical room
- Atmosphere, Tank containing water, where the AHJ indicates.
- None of the above.
24: R-717 is
- carbon dioxide
- trichloromethane
- water
- ammonia
25: Ammonia can come in contact with _______ ?
- Aluminum
- Copper tubing
- Copper
- Brass