Topics: ASHRAE/CMR
1: What type of relief valve is used on a CO2 system?
- rupture disc
- glove disc
- gate valve
- fusible plug
2: Joints in piping for refrigeration containing parts must withstand temperatures of ___?
- 700F
- 1000F
- 600F
- 800F
3: A premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space such as auditoriums, ballrooms, classrooms, passenger depots, restaurants, and theaters is considered a(n)
- public assembly occupancy
- institutional occupancy
- illegal occupancy
- commercial occupancy
4: Liquid level gauges must be provided with what?
- Automatic shut-offs
- A relief valve
- A low level mark
- A red line
5: The ____ design is the maximum pressure for which a specific part of a refrigeration system is designed.
- high pressure
- design pressure
- critical pressure
- low pressure
6: What is the intention of the word “should” as used in the code?
- A mandatory requirement
- A recommendation or advisory guideline
- A technician’s choice of how it should be done
- None of the Above
7: Methyl Chloride is a halogenated refrigerant and should not come in contact with
- aluminum
- zinc
- magnesium
- all of the above
8: 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
9: Who authorizes the form of certificate of completion of refrigeration systems that should be used?
- Massachusetts Board of Boiler Rules
- Fire Marshal
- Supervisor or project manager in charge of the installation
- Owner
10: What refrigerant has zero ozone depletion
- HFC
- CFC
- HCFC
- None of the above
11: A pressure relief should be located at least _______ from windows and doors.
- 30'
- 15'
- 25'
- 20'
12: Where a refrigeration or air conditioning system is installed,
- the form or certificate shall be authorized by the Department of Public Safety
- A field inspection shall be made before it is put into service
- The company who installed the system must notify the fire department in the jurisdiction where installed
- it shall not be operated below prescribed pressuers
13: Walls and doors of a machinery room shall be at least _____ hour(s) fire rated.
- 5
- 3
- 1
- 2
14: 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 welder
- licensed technician
- competent welder
- welder qualified
15: What section of ASHRAE-15 governs pressure vessels?
- OSHA
- Section 9 ASHRAE-15 ASME VIII unfired
- Section 7 ASHRAE-15 ASME VIII fired
- Section 6 ASHRAE-34 ASME VIII unfired
16: Trichlorofluoromethane is the name of what refrigerant?
- R-502
- R-12
- R-113
- R-11
17: What is R-290’s ASHRAE safety code?
- A2
- A3
- B1
- B2
18: What happens after your initial inspection of a pressure vessel?
- Notify the AHJ to let them know that the system been inspected
- Inspector leaves a metal tag with a certification listed on it
- There is a temporary shut-down until a final inspection can be performed.
- Notify the Fire Marshal that the system has been inspected and approved
19: What is not a requirement of a Class T machine room?
- Fire hose connected to the building fire protection system.
- Self-closing doors
- Tight fitting doors
- Automatic ventilation
20: 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
21: What is the refrigerant dichlorodifluoromethane?
- R-134A
- R-12
- R-22
- R-123
22: The ASHRAE Standard 34 requires what type of alarm for equipment rooms using HCFC-123?
- phosgene gas sening
- refrigerant sensing
- A group sensing
- CO Sensing
23: The test pressure applied to the high side of each factory-assembled refrigerating system shall be at least equal to the design pressure of
- the low side
- 2.5 times the design pressure
- the high side
- the aggregate of the high side and low side
24: System design pressures must take into consideration, not only, pressures found during normal operation but also what?
- When it's cold out
- When there is a malfunction on the high side
- When its warm out
- All of the above
25: 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