Topics: ASHRAE/CMR
1: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code
- over pressure protection and a rupture disc
- Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
- over pressure protection
- over pressure protection as well as a temperature protection device
2: R-12. R-22, and R-40 are considered Group I refrigerants.
- True
- False
3: What is Trichlorotrifluoromethane?
- R-13
- R-12
- R-113
- R-11
4: A Category D fluid
- is when the fluid handled is non flammable, nontoxic, and not damaging to human as defined in ANSI/ASME Process Piping.
- is when the design pressure does not exceed 150 psi
- a fluid for service piping in which the potential for personnel exposure is judged to cause harm and irreversible damage to those persons exposed to it
- Both a and b are correct
5: What should not (and can not) be located between a pressure imposing device and a pressure-limiting device?
- Foot valve
- Moisture indicator
- Stop valve
- Muffler
6: Which of the following are considered inorganic refrigerants?
- R-717 and R-718
- 410A and R-407C
- R-500 and R-502
- None of the above
7: R-22 is considered a(n)
- HCFC
- HCFCH
- HFC
- CFC
8: 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
9: 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
- competent welder
- welder qualified
- licensed welder
10: A movie theater would be considered a
- mixed occupancy
- public assembly occupancy
- institutional occupancy
- commercial occupancy
11: A plug containing an alloy that will melt at a specific temperature to relief pressure is a
- fusion plug
- fusible plug
- rupture plug
- relief plug
12: Name a CFC refrigerant(s):
- R-11
- R-12
- R-123
- both a & b
13: A professional or office building would be considered what type of occupancy?
- commercial
- public assembly
- mercantile
- business
14: Ammonia is under what safety classification?
- A3
- B2
- B1
- B3
15: When a refrigerating machinery room is used, the emergency procedures shall be posted
- inside the room, immediately adjacent to each door
- on a conspicuous card located near the evaporator
- outside the room, immediately adjacent to each door
- on a conspicuous card located near the compressor
16: R-22 falls under which safety classification?
- B-1
- B-2
- A-2
- A-1
17: The discharge relief valve is located (9.4.6)
- on top of the condensor
- between the compressor and the stop valve
- between the compressor and oil separator
- between the compressor and reciever
18: How many gallons of water per pound of ammonia do you need?
- 15
- 5
- 20
- 1
19: How many groups of refrigerants are there?
- 3
- 1
- 7
- 5
20: Low temperature systems should have what?
- High pour point
- Low pour point
- High viscosity
- None of the above
21: What must be done if refrigeration lines pass through a concrete floor?
- insulated
- installed through a pipe casing
- moisture barrier
- leak checked
22: When systems are protected by a high pressure relief device, the compressor's pressure limiting device shall be set at or below ____ % of the operating pressure of the high side relief device.
- 100
- 90
- 80
- 110
23: A pressure relief should be located at least _______ from windows and doors.
- 30'
- 20'
- 25'
- 15'
24: What section governs pressure vessels?
- OSHA
- Section 1 ASHREA 15 ASME fired
- Section 8 ASHREA 15 ASME unfired
- Section ASHREA 34
25: A room having machinery but no flame producing apparatus permanently installed and operated is considered a
- Class A machinery room
- Class B machinery room
- Class T machinery room
- Class M machinery room