Topics: ASHRAE/CMR
1: What should not (and can not) be located between a pressure imposing device and a pressure-limiting device?
- Muffler
- Moisture indicator
- Foot valve
- Stop valve
2: A professional or office building would be considered what type of occupancy?
- business
- mercantile
- commercial
- public assembly
3: Group A3 refrigerants have a ______ flammability rating than Group B1 refrigerants
- there is no Group B1 refrigerants
- the same
- higher
- lower
4: Pressure relief valves shall be marked with the data from
- Section VIII Division of the ASME Boiler & Pressure Code
- Section IV Division of the ASME Boiler & Pressure Code
- Section I Division VIII of ASME Boiler & Pressure Code
- Section XIII Division of the ASME Boiler & Pressure Code
5: Trichlorofluoromethane is the name of what refrigerant?
- R-502
- R-11
- R-12
- R-113
6: Fusible plugs must have what marked on them?
- Melting temperature in F
- Melting temperature in C
- Opening pressure
- All of the above
7: How are refrigerant blends classified?
- Blends don't have to be classified
- Based on worst case fractionation
- Based on the oil used
- Based on best case Fractionation
8: How many groups of refrigerants are there?
- 5
- 7
- 3
- 1
9: 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.
- CFC-11
- Lithium bromide
- ammonia
- HCFC-123
10: What is the minimum size of the discharge pipe?
- Same size as the outlet of the relief valve
- One pipe size larger that the inlet of the relief valve
- Depends on size of manifold
- All of the above
11: Walls and doors of a machinery room shall be at least _____ hour(s) fire rated.
- 2
- 1
- 5
- 3
12: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered
- public assembly occupancy
- mixed occupancy
- commercial occupancy
- institutional occupancy
13: Who approves containers for refrigerants?
- D.O.E
- D.O.D
- E.P.A
- D.O.T
14: What is not a requirement of a class T machine room?
- tight fitting doors
- fire hose connection to the building fire protection system
- self-closing doors
- automatic ventilation
15: Methyl Chloride is a halogenated refrigerant and should not come in contact with
- aluminum
- zinc
- magnesium
- all of the above
16: The pressure relief device of a positive displacement compressor shall discharge in the ______________or in accordance with 9.7.8
- the liquid side of the system
- the vapor side of the system
- low side of the system
- high side of the system
17: A restaurant is classified as a
- public assembly occupancy
- commercial occupancy
- large mercantile occupancy
- mixed occupancy
18: All electrical work done on refrigeration systems must comply with
- NEC and Massachusetts Modifications
- ASHREA-15 Section 9.2.1
- Department of Energy
- OSHA
19: How many gallons of water per pound of ammonia do you need?
- 1
- 15
- 5
- 20
20: A movie theater would be considered a
- commercial occupancy
- public assembly occupancy
- mixed occupancy
- institutional occupancy
21: What refrigerant has zero ozone depletion
- HFC
- CFC
- HCFC
- None of the above
22: Ammonia (NH3) is a group III refrigerant
- True
- False
23: When a receiver is greater than 3 cubic feet but less than 10 cubic feed, what is the minimum relief device required?
- fusible plug
- relief valve
- rupture disc
- all of the above
24: Doors communicating with outside from a mechanical room must be?
- Steel, approved, weather-stripped
- Self-closing, aligned, fire door
- Self-closing, wooden, fire door
- Self-closing, approved, fire door
25: 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