Topics: ASHRAE/CMR
1: Fusible plugs shall not be used with pressure vessels of
- 15 square feet or less
- 3 cubic feet or more
- 3 cubic feet or less
- 15 cubic feet or more
2: Can ammonia be used on domestic system?
- yes
- no
- yes, for systems under 10 tons
- no, unless there is proper ventilation system installed
3: How many different groups of refrigerants are there?
- 15
- 3
- 7
- 11
4: A pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.
- 50
- 22
- 66
- 25
5: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered
- mixed occupancy
- institutional occupancy
- public assembly occupancy
- commercial occupancy
6: Can you use Ammonia in industrial applications?
- When mixed with R-718
- No, never
- Yes, always
- Yes, Under certain condidtions
7: Where a refrigeration or air conditioning system is installed,
- the form or certificate shall be authorized by the Department of Public Safety
- The company who installed the system must notify the fire department in the jurisdiction where installed
- A field inspection shall be made before it is put into service
- it shall not be operated below prescribed pressuers
8: How many groups of refrigerants are there?
- 1
- 5
- 7
- 3
9: A total of all group A-2,B-2, A-3, and B-3 refrigerants shall not exceed ____ lb in the occupied areas and machinery rooms of institutional occupancies.
- 100
- 350
- 550
- 50
10: Ammonia (NH3) is a group III refrigerant
- True
- False
11: What is an egress?
- An escape route
- A valve put on the low side of the system to prevent frosting
- A code violation
- An entrance or exit
12: What refrigerant is an inorganic compound?
- R-22
- R-132A
- Ammonia
- R-410A
13: The discharge relief valve is located (9.4.6)
- between the compressor and the stop valve
- between the compressor and oil separator
- on top of the condensor
- between the compressor and reciever
14: Pressure vessels with an internal volume of 3 cubic feet or less
- shall use pressure relief devices
- shall use fusible plugs
- shall use pressure relief devices or fusible plugs
- do not need pressure relief protection
15: A “U” or “UM” marking a on a nameplate of a pressure vessels signifies compliance with Section VIII of
- the ASME Boiler and Pressure Vessel Code
- Section 11.3.1.5 ASHRAE 15 Standard
- the ANSI Standard 10.7.2
- both the ANSI Standard 10.7.2 and ASHRAE 15 Standard 11.3.1.5
16: Which of the following is an inorganic refrigerant?
- R-22
- Ammonia
- Chlorofluorocarbons
- All of the above
17: Ammonia belongs to Group
- A-1
- B-1
- B-2
- A-2
18: How many refrigerant classifications are there for flammability?
- 3
- 7
- 1
- 2
19: R-123 belongs to Group
- B-3
- A-3
- B-2
- B-1
20: R-22 is classified as a ____ refrigerant on the safety matrix.
- A-1
- B-1
- B-2
- A-2
21: A pressure relief should be located at least _______ from windows and doors.
- 25'
- 30'
- 15'
- 20'
22: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within
- 30 days
- 2 months
- 14 days
- 1 week
23: A premise or that portion of a premise where people transact business, receive personal service, or purchase foods, other goods is considered a
- mercantile occupancy
- business occupancy
- commercial occupancy
- public assembly occupancy.
24: Name three things that must be done when changing refrigeration lubricant?
- Nothing must be done
- You can't change lubricants.
- Place sign, check for leaks, insulate
- Make sure it's compatible, notify owner, notify AHJ
25: NH3 is
- ammonia
- lithium bromide
- R-508A
- R-718