Topics: ASHRAE/CMR
1: When should a relief valve start to function?
- Before the purge station discharges
- 10 psi before it's set pressure
- Two times it's working pressure
- At it's set pressure
2: A hotel is considered a _______ occupancy.
- commercial
- residential
- mercantile
- institutional
3: When releasing a hydrogenated hydrocarbon refrigerant to the atmosphere, ample ventilation must be provided and
- the owner shall be informed
- explosion precautions must be taken
- gas masks must be worn
- no flames shall be permitted
4: Low temperature systems should have what?
- High pour point
- Low pour point
- High viscosity
- None of the above
5: What pipe can not be used for refrigeration?
- M
- K
- L
- N
6: Dual-pressure relief devices should be installed on
- vessels of 3 cubic feet or less
- vessels of 10 cubic feet or more
- vessels of 10 cubic feet or less
- vessels of 3 cubic feet or more
7: 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)
- public assembly occupancy
- institutional occupancy
- illegal occupancy
- commercial occupancy
8: B3 refrigerants are considered
- non-toxic but non-flammable
- toxic but non-flammable
- toxic and highly flammable
- non-toxic but flammable
9: What is the intention of the word “should” as used in the code?
- A mandatory requirement
- A recommendation or advisory guideline
- A technician’s choice of how it should be done
- None of the Above
10: pressure relief valves must discharge to the atmosphere at a location not less than 15 feet from ground level and ____ feet from any window, ventilation opening, or exits of buildings.
- 10
- 15
- 20
- 25
11: The Board of Boilers adopts by reference
- the MACS Pressure Vessel Code of Massachusetts
- MSCA Code
- the 1997 ANSI/ASHRAE Safety Code
- Montreal Protocol Safety Code
12: Setting a pressure relief device shall not exceed ___ of the design pressure
- 80%
- 100%
- 90%
- 75%
13: Which refrigerant(s) is an HFC?
- R-22
- R-410A
- R-502
- All of the above
14: What would be the classification of a prison?
- Large mercantile
- Institutional
- Place of assembly
- Industrial
15: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.
- 15
- 20
- 50
- 75
16: _____ and its alloys are suitable for use with ammonia systems.
- Copper
- Aluminum
- Magnesium
- Zinc
17: How far from the ground does a relief valve need to be?
- At least 15' above grade
- Not more than 3' above grade
- At least 25' above grade
- At least 20' above grade
18: Systems containing more than 110 pounds must have stop valves located at the
- compressor suction inlet
- compressor discharge outlet
- receiver inlet and outlet
- All of the above
19: What would be the classification for Stop & Shop grocery store?
- Place of assembly
- Industrial
- Instituional
- Large mercantile
20: Most CFC's are
- flammable
- inert but toxic
- toxic
- inert
21: 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
22: What is not a requirement of a class T machine room?
- self-closing doors
- fire hose connection to the building fire protection system
- automatic ventilation
- tight fitting doors
23: The dial of a pressure gauge, when installed on the high side of a system be graduated 1.2 times the designed pressure.
- True
- False
24: Pipe identification labels are required when the system contains more than
- 120 lbs
- 65 lbs
- 110 lbs
- 55 lbs
25: A movie theater would be considered a
- institutional occupancy
- public assembly occupancy
- mixed occupancy
- commercial occupancy