Topics: ASHRAE/CMR
1: How many groups of refrigerants are there?
- 5
- 7
- 3
- 1
2: Who is permitted to access a refrigeration machine room?
- Any employee
- Contractors only
- Anyone, it's a completely safe area
- Authorized persons only
3: R-11 belongs to Group
- B-1
- B-3
- A-1
- A-2
4: R-22 is classified as a ____ refrigerant on the safety matrix.
- A-1
- B-1
- B-2
- A-2
5: What kind of material can't be used on the outlet of a relief valve?
- Copper
- PVC
- Aluminum
- Stainless Steel
6: 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
7: 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
8: Evaporators within 18" of a heating coil must be equipped with a
- high limit control
- zone valve
- pressure relief device
- low limit control
9: 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.
10: What is the refrigerant chlorodifluoromethane?
- R-134a
- R-123
- R-22
- R-12
11: A High-Probability System
- is a system highly likely to leak form a failed connection or component of such system
- is such that any leak will cause injury or death to anyone within a 100 square foot area
- is such that a leak of refrigerant from a failed connection will enter the occupied space
- is such that a leak of refrigerant from a failed connection will enter an unoccupied space
12: A restaurant is classified as a
- mixed occupancy
- large mercantile occupancy
- commercial occupancy
- public assembly occupancy
13: R-12. R-22, and R-40 are considered Group I refrigerants.
- True
- False
14: How much clearance do you need around the perimeter of electrical panels?
- 24"
- 18"
- 12"
- 36"
15: When an inspection is needed, how often must it be done?
- every 24 months
- annually
- every 36 months
- every 18 months
16: Refrigeration devices shall be equipped with a ____ to protect against unexpected pressure due to a malfunction or fire?
- Temperature limiter device
- Circuit Breaker
- Relief valve
- T&P device
17: Setting a pressure relief device shall not exceed ___ of the design pressure
- 90%
- 80%
- 100%
- 75%
18: 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
19: Pressure vessels with an internal volume of 3 cubic feet or more
- do not need pressure relief protection
- shall use fusible plugs
- shall use pressure relief devices or fusible plugs
- shall use pressure relief devices
20: What type of refrigerants are NOT flammable?
- CHC
- HFC
- HCFC
- All of the above
21: A hotel is considered a _______ occupancy.
- institutional
- mercantile
- residential
- commercial
22: Class 3 refrigerants are
- toxic
- non-toxic
- highly flammable
- non-flammable
23: Pipe identification labels are required when the system contains more than
- 120 lbs
- 65 lbs
- 110 lbs
- 55 lbs
24: What is the minimum size of the discharge pipe?
- Same size as the outlet of the relief valve
- One pipe size larger that the inlet of the relief valve
- Depends on size of manifold
- All of the above
25: _____ and its alloys are suitable for use with ammonia systems.
- Zinc
- Magnesium
- Copper
- Aluminum