Topics: ASHRAE/CMR
1: What section governs pressure vessels?
- Section ASHREA 34
- Section 8 ASHREA 15 ASME unfired
- Section 1 ASHREA 15 ASME fired
- OSHA
2: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.
- 33
- 22
- 18
- 50
3: 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
4: R-22 falls under which safety classification?
- A-1
- B-2
- A-2
- B-1
5: Liquid level gauge glasses shall have automatic closing shut off valves, except Bull's eye or reflex type.
- True
- False
6: Machinery rooms must be vented to ______?
- neutralizing tank
- outdoors
- unoccupied spaces
- basement
7: What refrigerant has zero ozone depletion
- HFC
- CFC
- HCFC
- None of the above
8: Name a CFC refrigerant(s):
- R-11
- R-12
- R-123
- both a & b
9: What type of refrigerants are NOT flammable?
- CHC
- HFC
- HCFC
- All of the above
10: 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.
- HCFC-123
- ammonia
- CFC-11
- Lithium bromide
11: 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 R-11
- Flush with RX-11
- Flush with ammonia
- Flush with R-718
12: When a pressure gauge is permanently installed on a system, it must be ___ times the design pressure of the system.
- 2.2
- 1.2
- 1
- 1.5
13: Where are the three places that the discharge from an ammonia relief valve be piped?
- To chemical neutralizing tank only
- Underground, into drain, into mechanical room
- Atmosphere, Tank containing water, where the AHJ indicates.
- None of the above.
14: A relief valve discharge capacity is rated in
- temperature minus pounds of air per second divided by release rate squared
- PSIG
- PSIA
- Pounds of air per minute.
15: What is the refrigerant chlorodifluoromethane?
- R-12
- R-123
- R-134a
- R-22
16: A class B1 refrigerant is considered
- non-toxic but highly flammable
- non-toxic and non-flammable
- toxic but non-flammable
- toxic and somewhat flammable
17: 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
18: Where are the three places that the discharge from an ammonia relief valve be piped?
- atmosphere, tank containing water, where the A.H.J. indicates
- underground, into drain, into mechanical room
- to chemical neutralizing tank only
- none of the above
19: _____ alloys shall not be used in contact with an halogenated refrigerants.
- Copper
- Nickel
- Zinc
- Magnesium
20: Walls and doors of a machinery room shall be at least _____ hour(s) fire rated.
- 2
- 5
- 3
- 1
21: Setting a pressure relief device shall not exceed ___ of the design pressure
- 80%
- 100%
- 90%
- 75%
22: What section of ASHRAE-15 governs pressure vessels?
- OSHA
- Section 9 ASHRAE-15 ASME VIII unfired
- Section 6 ASHRAE-34 ASME VIII unfired
- Section 7 ASHRAE-15 ASME VIII fired
23: Which refrigerant(s) is an HFC?
- R-22
- R-410A
- R-502
- All of the above
24: The Department that certifies the transportation of refrigerant is the
- RSES
- DOT
- EPA
- EPO
25: Low temperature systems should have what?
- High pour point
- Low pour point
- High viscosity
- None of the above