Topics: ASHRAE/CMR
1: 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
2: Trichlorofluoromethane is the name of what refrigerant?
- R-502
- R-113
- R-11
- R-12
3: What would be the classification for Stop & Shop grocery store?
- Large mercantile
- Place of assembly
- Industrial
- Instituional
4: What pipe can not be used for refrigeration?
- K
- M
- L
- N
5: A plug containing an alloy that will melt at a specific temperature to relief pressure is a
- fusion plug
- fusible plug
- relief plug
- rupture plug
6: Ammonia is under what safety classification?
- B1
- A3
- B2
- B3
7: What is an egress?
- An entrance or exit
- A code violation
- An escape route
- A valve put on the low side of the system to prevent frosting
8: 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
9: B3 refrigerants are considered
- toxic but non-flammable
- non-toxic but flammable
- toxic and highly flammable
- non-toxic but non-flammable
10: What refrigerant doesn't have to be classified?
- R-422A
- R-717
- R-134A
- R-718
11: The certificate of inspection
- shall be posted and protected from dirt, water, and other elements
- shall be posted on the compressor shell or electrical panel at the unit
- shall be authorized by a notarized insurance company
- shall be $20 and an additional fee of $1 for each tone above 20 tons
12: 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
13: Most CFC's are
- flammable
- inert but toxic
- inert
- toxic
14: R-22 is considered a(n)
- CFC
- HCFCH
- HCFC
- HFC
15: A class B2 refrigerant is considered
- toxic and non-flammable
- non-toxic and highly flammable
- toxic and somewhat flammable
- non-toxic and non-flammable
16: Who is permitted to access a refrigeration machine room?
- Any employee
- Contractors only
- Authorized persons only
- Anyone, it's a completely safe area
17: 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.
- Lithium bromide
- HCFC-123
- CFC-11
- ammonia
18: Joints in refrigeration piping must be _____ before being covered?
- Insulated
- Leak tested
- Pressurized
- Inspected
19: The ____ design is the maximum pressure for which a specific part of a refrigeration system is designed.
- critical pressure
- design pressure
- low pressure
- high pressure
20: A positive displacement compressor is
- is a reciprocating type compressor with 2 or more pistons
- a compressor in which the increase in pressure is attained by changing the internal pressure of the compression chamber
- where the compressor's suction pressure and the compressor;s discharge pressure is more than 50 PSI
- a compressor in which the increase in pressure is attained by changing the internal volume of the compression chamber
21: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.
- UL and UM
- UM or UL
- UL and UR
- UV or UR
22: 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
- competent welder
- licensed welder
- licensed technician
- welder qualified
23: What does safe access mean?
- Locked doors
- Well-lit exit signs
- A clear unobstructed path to the equipment and controls
- OSHA approved
24: Which refrigerant class listed below is the most flammable?
- C3
- A2
- B2
- A3
25: Can ammonia be used on domestic system?
- yes
- no, unless there is proper ventilation system installed
- yes, for systems under 10 tons
- no