Topics: ASHRAE/CMR
1: All welding done on any refrigeration system or piping covered by 522 CMR 9.00 shall be performed by a according to Section IX of the ASME code
- licensed technician
- licensed welder
- competent welder
- welder qualified
2: How much clearance do you need around the perimeter of electrical panels?
- 12"
- 36"
- 24"
- 18"
3: What does safe access mean?
- A clear unobstructed path to the equipment and controls
- Well-lit exit signs
- Locked doors
- OSHA approved
4: How many refrigerant classifications are there for flammability?
- 1
- 2
- 3
- 7
5: What must be done to refrigerant pipes before being buried?
- Certified
- Encased
- Leaked checked
- Coated
6: A hotel is considered a _______ occupancy.
- institutional
- mercantile
- residential
- commercial
7: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered
- institutional occupancy
- mixed occupancy
- public assembly occupancy
- commercial occupancy
8: Pressure vessels with an internal volume of 3 cubic feet or more
- shall use pressure relief devices or fusible plugs
- shall use pressure relief devices
- shall use fusible plugs
- do not need pressure relief protection
9: The ____ design is the maximum pressure for which a specific part of a refrigeration system is designed.
- design pressure
- low pressure
- high pressure
- critical pressure
10: What type of relief valve is used on a CO2 system?
- glove disc
- rupture disc
- fusible plug
- gate valve
11: What is the refrigerant chlorodifluoromethane?
- R-123
- R-134a
- R-22
- R-12
12: What is the refrigerant dichlorodifluoromethane?
- R-22
- R-134A
- R-123
- R-12
13: Large vessels containing refrigerant ______________________ from using two or more pressure-relief devices in parallel to obtain the required capacity.
- containing R-11, R-123 & R-717 exclusively shall not be prohibited
- of Group B2 refrigerant shall be prohibited
- shall be prohibited
- shall not be prohibited
14: Class A refrigerants are considered
- toxic
- flammable
- non-toxic
- non-flammable
15: copper and its alloys shall not be used in contact with _____ except as a component of bronze alloys for bearing or other non-refrigerant containing uses.
- CFC-11
- ammonia
- Lithium bromide
- HCFC-123
16: The Department that certifies the transportation of refrigerant is the
- EPO
- RSES
- EPA
- DOT
17: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code
- over pressure protection and a rupture disc
- Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
- over pressure protection
- over pressure protection as well as a temperature protection device
18: 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
- commercial occupancy
- public assembly occupancy.
- business occupancy
19: 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
20: Methyl Chloride is a halogenated refrigerant and should not come in contact with
- aluminum
- zinc
- magnesium
- all of the above
21: Dual-pressure relief devices should be installed on
- vessels of 3 cubic feet or less
- vessels of 3 cubic feet or more
- vessels of 10 cubic feet or less
- vessels of 10 cubic feet or more
22: 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
23: Refrigeration devices shall be equipped with a ____ to protect against unexpected pressure due to a malfunction or fire?
- Relief valve
- Temperature limiter device
- T&P device
- Circuit Breaker
24: What was the main reason for enacting the no venting rule of July 1, 1992?
- Ozone depletion
- Green house effect
- Global warming potential
- All of the above
25: What section governs pressure vessels?
- Section 1 ASHREA 15 ASME fired
- Section 8 ASHREA 15 ASME unfired
- OSHA
- Section ASHREA 34