Topics: ASHRAE/CMR
1: Pressure vessels of 10 cubic feet or more gross volume shall use
- at least one rupture member
- a dual pressure-relief valve if charging into the atmosphere
- at least three means of discharge and/or rupture discs
- both a and b are correct
2: Class 3 refrigerants are
- non-toxic
- toxic
- non-flammable
- highly flammable
3: What is R-22?
- Chlorodifluoromethane
- HFC
- CCFCM
- Chlorofluoromethane
4: What does safe access mean?
- A clear unobstructed path to the equipment and controls
- OSHA approved
- Well-lit exit signs
- Locked doors
5: All electrical work done on refrigeration systems must comply with
- ASHREA-15 Section 9.2.1
- Department of Energy
- OSHA
- NEC and Massachusetts Modifications
6: How many CFMs are required per square foot of commercial office occupied space
- 5 CFM
- 15 CFM
- 20 CFM
- .5 CFM
7: How much clearance do you need around the perimeter of electrical panels?
- 24"
- 18"
- 36"
- 12"
8: What would be the classification for Stop & Shop grocery store?
- Industrial
- Instituional
- Large mercantile
- Place of assembly
9: Low temperature systems should have what?
- High pour point
- Low pour point
- High viscosity
- None of the above
10: Pressure limiting devices are not required for systems containing less then ________ refrigerants.
- 6.6 lbs
- 22 lbs
- 44 lbs
- 13.9 lbs
11: All serviceable components of a refrigeration system shall be provided with
- service manuals
- name plates with markings referring to pressure and temperature in accordance with ASME Boiler and Pressure Vessel Code
- manufactures instructions on start-up procedures
- safe access
12: How are refrigerant blends classified?
- Based on the oil used
- Based on best case Fractionation
- Based on worst case fractionation
- Blends don't have to be classified
13: How much refrigerant can be stored in a mechanical room outside of the system?
- 100
- 150
- 200
- 330
14: Dual-pressure relief devices should be installed on
- vessels of 10 cubic feet or more
- vessels of 3 cubic feet or more
- vessels of 3 cubic feet or less
- vessels of 10 cubic feet or less
15: Fusible plugs must have what marked on them?
- Melting temperature in F
- Melting temperature in C
- Opening pressure
- All of the above
16: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within
- 30 days
- 2 months
- 1 week
- 14 days
17: 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
- welder qualified
- licensed welder
- competent welder
18: 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.
- 350
- 100
- 250
- 400
19: Doors communicating with outside from a mechanical room must be?
- Self-closing, aligned, fire door
- Steel, approved, weather-stripped
- Self-closing, approved, fire door
- Self-closing, wooden, fire door
20: Field Inspections of refrigeration and A/C systems in Massachusetts shall be made by
- District Engineering Inspectors
- Commissioned Inspectors
- Master licensed Technician
- both a or b
21: The Department that certifies the transportation of refrigerant is the
- DOT
- RSES
- EPA
- EPO
22: Which refrigerant class listed below is the most flammable?
- A2
- C3
- A3
- B2
23: A premise or that portion of a premise where people transact business, receive personal service, or purchase foods, other goods is considered a
- commercial occupancy
- business occupancy
- mercantile occupancy
- public assembly occupancy.
24: Halogenated refrigerants cannot be used with what material?
- Aluminum
- Stainless steel
- Copper
- Magnesium alloy
25: Relief valves are rated in
- gallons of water per minute
- pounds of air per hour
- pounds of air per minute
- gallons of water per hour