Topics: ASHRAE/CMR
1: What section of ASHRAE-15 governs pressure vessels?
- Section 9 ASHRAE-15 ASME VIII unfired
- Section 7 ASHRAE-15 ASME VIII fired
- OSHA
- Section 6 ASHRAE-34 ASME VIII unfired
2: How many refrigerant classifications are there for flammability?
- 1
- 3
- 2
- 7
3: 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
4: A premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space such as auditoriums, ballrooms, classrooms, passenger depots, restaurants, and theaters is considered a(n)
- illegal occupancy
- commercial occupancy
- institutional occupancy
- public assembly occupancy
5: Pipe identification labels are required when the system contains more than
- 120 lbs
- 65 lbs
- 110 lbs
- 55 lbs
6: What kind of material can't be used on the outlet of a relief valve?
- Aluminum
- Stainless Steel
- Copper
- PVC
7: Who approves containers for refrigerants?
- E.P.A
- D.O.D
- D.O.E
- D.O.T
8: Liquid level gauges shall have _____________ with one exception being that of the liquid level gauge bull’s eye type.
- color-coded glass to determine type of refrigerant
- moisture indicators
- automatic closing shut-off valves
- All of the above
9: Pressure limiting devices are not required for systems containing less then ________ refrigerants.
- 6.6 lbs
- 44 lbs
- 13.9 lbs
- 22 lbs
10: Halo-carbon refrigerants cannot be used with what material?
- Magnesium alloy
- Stainless Steel
- Copper
- Aluminum
11: _____ and its alloys are suitable for use with ammonia systems.
- Magnesium
- Zinc
- Aluminum
- Copper
12: Name an HCFC refrigerant(s):
- R-22
- R-123
- R-11
- both a & b
13: R-22 is classified as a ____ refrigerant on the safety matrix.
- A-2
- B-2
- B-1
- A-1
14: Ammonia is under what safety classification?
- A3
- B2
- B1
- B3
15: Ammonia belongs to Group
- A-1
- A-2
- B-1
- B-2
16: Pressure relief valves shall be marked with the data from
- Section XIII Division of the ASME Boiler & Pressure Code
- Section I Division VIII of ASME Boiler & Pressure Code
- Section IV Division of the ASME Boiler & Pressure Code
- Section VIII Division of the ASME Boiler & Pressure Code
17: Pressure vessels having an inside diameter of 6” or less shall be protected by
- a fusible plug
- a pressure relief device
- either a fusible plug or a pressure relief device
- Pressure vessels having an inside diameter of 6” or less need no such protection unless otherwise specified
18: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.
- 22
- 18
- 50
- 33
19: What is not a requirement of a Class T machine room?
- Fire hose connected to the building fire protection system.
- Tight fitting doors
- Automatic ventilation
- Self-closing doors
20: A hotel is considered a _______ occupancy.
- institutional
- residential
- mercantile
- commercial
21: Ammonia (NH3) is a group III refrigerant
- True
- False
22: According to the 522 CMR Board of Boilers, refrigerant detectors, alarms, and the refrigeration mechanical room ventilating systems shall be tested
- regularly
- annually
- bi-annually
- quarterly
23: 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 cheap
- Because it's water
- Because it's a non-flammable refrigerant
24: Pressure vessels with an internal volume of 3 cubic feet or more
- do not need pressure relief protection
- shall use pressure relief devices or fusible plugs
- shall use pressure relief devices
- shall use fusible plugs
25: What refrigerant has zero ozone depletion
- HFC
- CFC
- HCFC
- None of the above