Topics: ASHRAE/CMR
1: What would be the classification for Stop & Shop grocery store?
- Large mercantile
- Place of assembly
- Industrial
- Instituional
2: Halogen refrigerants are corrosive to which type of metal?
- copper
- black iron
- magnesium
- stainless steel
3: How many flammability classifications are refrigerants in?
- 7
- 5
- 3
- 2
4: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
- 330 lbs
- 660 lbs
- 500 lbs
- 55 lbs
5: Can a R22 line set be reused for a 410A system and if it can be reused, what must be done to it?
- Flush with ammonia
- Flush with R-718
- Flush with R-11
- Flush with RX-11
6: Refrigeration piping before being buried shall be
- leak tested
- encased in pipe duct
- pressure tested
- All of the above
7: 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
- public assembly occupancy.
- commercial occupancy
- business occupancy
8: When an inspection is needed, how often must it be done?
- every 24 months
- every 18 months
- every 36 months
- annually
9: Fusible plugs shall not be used with pressure vessels of
- 3 cubic feet or more
- 15 cubic feet or more
- 15 square feet or less
- 3 cubic feet or less
10: Who authorizes changes to the safety codes?
- Board of Boilers
- Person who pulled the permit
- Contractor who last serviced the system.
- Person in charge of the facility
11: Which refrigerant replaced R-12?
- R-22
- R-134A
- R-410A
- R-407A
12: NH3 is
- ammonia
- R-508A
- lithium bromide
- R-718
13: 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
14: Who is permitted to access a refrigeration machine room?
- Contractors only
- Anyone, it's a completely safe area
- Authorized persons only
- Any employee
15: Before determining if a machinery room equipment is excluded from following Ashrae 15, you must determine how many pounds of refrigerant per _____ cubic feet?
- 100,000
- 10,000
- 100
- 1,000
16: Pressure vessels with an internal volume of 3 cubic feet or less
- shall use fusible plugs
- shall use pressure relief devices
- shall use pressure relief devices or fusible plugs
- do not need pressure relief protection
17: When should a relief valve start to function?
- At it's set pressure
- 10 psi before it's set pressure
- Before the purge station discharges
- Two times it's working pressure
18: Can you use Ammonia in industrial applications?
- No, never
- When mixed with R-718
- Yes, Under certain condidtions
- Yes, always
19: How many groups of refrigerants are there?
- 5
- 7
- 1
- 3
20: When air is ducted through a machine room that services occupied space, What must be done?
- Welded and seamed.
- Insulated and cross broke
- Flanged and gasketed
- Ducted and sealed
21: Whoever owns/uses a refrigeration or air conditioning system covered by this code
- must notify the Department of Public Safety prior to starting the system
- shall be licensed by the Commonwealth of Massachusetts according to CMR 522
- shall make application for inspections to the Chief of Inspectors
- None of the above
22: Large Mercantile occupancy is a premise or that portion of a premise where more than ____ persons congregate on levels above or below the street level to purchase personal merchandise.
- 250
- 350
- 100
- 400
23: All electrical work done on refrigeration systems must comply with
- Department of Energy
- ASHREA-15 Section 9.2.1
- OSHA
- NEC and Massachusetts Modifications
24: What is Trichlorotrifluoromethane?
- R-12
- R-113
- R-13
- R-11
25: Liquid level gauge glasses shall have automatic closing shut off valves, except Bull's eye or reflex type.
- True
- False