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 as well as a temperature protection device
- over pressure protection
2: What happens after your initial inspection of a pressure vessel?
- There is a temporary shut-down until a final inspection can be performed.
- Notify the AHJ to let them know that the system been inspected
- Notify the Fire Marshal that the system has been inspected and approved
- Inspector leaves a metal tag with a certification listed on it
3: Walls and doors of a machinery room shall be at least _____ hour(s) fire rated.
- 2
- 3
- 1
- 5
4: Refrigerant restricted in 2004 but used for transition for decades:
- R-123
- R-134A
- R-22
- R-11
5: A person holding a license as a refrigeration technician may connect or disconnect for the purpose of installation, repair, or replacement, any electrical device or control to be a part of a refrigeration or air conditioning system, from the
- breaker panel in
- 24 volt secondary side of the Class 2 transformer to the thermostat
- first disconnect in
- load-side of the contactor in
6: Before you change the type of refrigerant in a refrigeration system, what three things must be done?
- you can't change refrigerants
- place sign, check for leaks, insulate
- nothing must be done
- make sure it's compatible, notify owner, notify A.H.J
7: The discharge relief valve is located (9.4.6)
- between the compressor and the stop valve
- between the compressor and oil separator
- on top of the condensor
- between the compressor and reciever
8: When must refrigeration system covered by the code be inspected?
- Annually and when installed
- Not required
- Upon installation
- Annually
9: What do you need to do when you install a new system?
- Add refrigerant
- Have it inspected
- Document the superheat and subcooling reading
- Insulate the suction line before you take a superheat reading
10: When is the space above a drop ceiling calculated as space for refrigerant limit quantities?
- When there is a space 6' or more above it
- When its white
- When there are sprinklers above
- When it's used as part of a supply or return air system
11: What refrigerant is an inorganic compound?
- R-22
- R-132A
- Ammonia
- R-410A
12: Which refrigerant class listed below is the most flammable?
- B2
- A3
- C3
- A2
13: A relief valve discharge capacity is rated in
- PSIA
- temperature minus pounds of air per second divided by release rate squared
- Pounds of air per minute.
- PSIG
14: A plug containing an alloy that will melt at a specific temperature to relief pressure is a
- relief plug
- rupture plug
- fusion plug
- fusible plug
15: Halogenated refrigerants cannot be used with what material?
- Stainless steel
- Aluminum
- Magnesium alloy
- Copper
16: The 522 CMR 9.00 has adopted for reference ASHRAE ____
- 10
- 15
- III
- 25
17: What type refrigerant is NOT ozone depleting?
- CFC
- Halon
- HFC
- HCFC
18: What type of material can't be used on the outlet of a relief valve?
- PVC
- Stainless steel
- Magnesium alloy
- Copper
19: The ____ design is the maximum pressure for which a specific part of a refrigeration system is designed.
- high pressure
- critical pressure
- design pressure
- low pressure
20: 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
21: Institutional occupancy is
- a premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space.
- a premise or that portion of a premise from which, because they are disabled, debilitated, or confined, occupants cannot readily leave without the assistance of others.
- a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
- None of the above
22: 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
23: Pipe identification labels are required when the system contains more than
- 110 lbs
- 120 lbs
- 65 lbs
- 55 lbs
24: All machine rooms must be outfitted with a detector that _______?
- activates an audible alarm
- activates a visual alarm
- starts the ventilation system
- All of the above
25: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered
- mixed occupancy
- institutional occupancy
- public assembly occupancy
- commercial occupancy