Topics: ASHRAE/CMR
1: What is Trichlorotrifluoromethane?
- R-13
- R-12
- R-113
- R-11
2: What type of refrigerants are NOT flammable?
- CHC
- HFC
- HCFC
- All of the above
3: When a refrigeration or air conditioning system is installed
- it shall not be operated below prescribed pressures
- the form of certificate shall be authorized by the Department of Pubic safety
- it shall be approved by the owner for proper operation.
- a field inspection shall be made before it is put into service
4: A hotel is considered a _______ occupancy.
- institutional
- residential
- mercantile
- commercial
5: What section of ASHRAE-15 governs pressure vessels?
- Section 9 ASHRAE-15 ASME VIII unfired
- Section 7 ASHRAE-15 ASME VIII fired
- OSHA
- Section 6 ASHRAE-34 ASME VIII unfired
6: What is the refrigerant dichlorodifluoromethane?
- R-134A
- R-123
- R-22
- R-12
7: Which of the following is an inorganic refrigerant?
- R-22
- Ammonia
- Chlorofluorocarbons
- All of the above
8: Machinery rooms must be vented to ______?
- neutralizing tank
- unoccupied spaces
- basement
- outdoors
9: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
- 500 lbs
- 55 lbs
- 330 lbs
- 660 lbs
10: What happens after your initial inspection of a pressure vessel?
- Notify the Fire Marshal that the system has been inspected and approved
- Notify the AHJ to let them know that the system been inspected
- There is a temporary shut-down until a final inspection can be performed.
- Inspector leaves a metal tag with a certification listed on it
11: Which refrigerant(s) is an HFC?
- R-22
- R-410A
- R-502
- All of the above
12: Pressure vessels of 10 cubic feet or more gross volume shall use
- at least one rupture member
- a dual pressure-relief valve if charging into the atmosphere
- at least three means of discharge and/or rupture discs
- both a and b are correct
13: When should a relief valve start to function?
- Before the purge station discharges
- 10 psi before it's set pressure
- At it's set pressure
- Two times it's working pressure
14: Large Mercantile occupancy is a premise or that portion of a premise where more than ____ persons congregate on levels above or below the street level to purchase personal merchandise.
- 400
- 350
- 250
- 100
15: B3 refrigerants are considered
- toxic and highly flammable
- non-toxic but non-flammable
- toxic but non-flammable
- non-toxic but flammable
16: 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
17: 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)
- illegal occupancy
- commercial occupancy
- institutional occupancy
- public assembly occupancy
18: When releasing a hydrogenated hydrocarbon refrigerant to the atmosphere, ample ventilation must be provided and
- explosion precautions must be taken
- gas masks must be worn
- no flames shall be permitted
- the owner shall be informed
19: Setting a pressure relief device shall not exceed ___ of the design pressure
- 90%
- 75%
- 100%
- 80%
20: How many groups of refrigerants are there?
- 3
- 1
- 7
- 5
21: Ammonia (NH3) is a group III refrigerant
- True
- False
22: How far from the window does a relief valve need to be according to ASHRAE-15?
- There is no minimum for relief valve and windows.
- At least 40'
- At least 30'
- At least 20'
23: How much clearance do you need around the perimeter of electrical panels?
- 36"
- 24"
- 18"
- 12"
24: 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
25: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.
- 22
- 18
- 50
- 33