Topics: ASHRAE/CMR
1: Large vessels containing refrigerant ______________________ from using two or more pressure-relief devices in parallel to obtain the required capacity.
- containing R-11, R-123 & R-717 exclusively shall not be prohibited
- of Group B2 refrigerant shall be prohibited
- shall not be prohibited
- shall be prohibited
2: 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.
- ammonia
- Lithium bromide
- HCFC-123
- CFC-11
3: Trichlorofluoromethane is the name of what refrigerant?
- R-12
- R-502
- R-11
- R-113
4: Before determining if a machinery room equipment is excluded from following Ashrae 15, you must determine how many pounds of refrigerant per _____ cubic feet?
- 100
- 10,000
- 100,000
- 1,000
5: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within
- 1 week
- 30 days
- 2 months
- 14 days
6: A professional or office building would be considered what type of occupancy?
- mercantile
- commercial
- public assembly
- business
7: Where are the three places that the discharge from an ammonia relief valve be piped?
- atmosphere, tank containing water, where the A.H.J. indicates
- underground, into drain, into mechanical room
- to chemical neutralizing tank only
- none of the above
8: Where must a refrigeration contractor's license number be displayed?
- Uniforms, checks, and invoices.
- Trucks, license plates, and uniforms
- Truck, office, every job, and on all equipment
- Trucks, invoices, and advertising
9: Who is permitted to access a refrigeration machine room?
- Any employee
- Authorized persons only
- Anyone, it's a completely safe area
- Contractors only
10: What is an example of institutional occupancy?
- Dorms
- Hospital
- Shopping mall
- Football stadium
11: Liquid shall not occupy more than ____ of the volume when the temperature of the refrigerant is 90F.
- 80%
- 75%
- 90%
- 100%
12: 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 30'
- At least 20'
- At least 40'
13: What is the refrigerant dichlorodifluoromethane?
- R-123
- R-134A
- R-22
- R-12
14: Emergency shutdown procedures, including precautions to be observed in case of a breakdown or leak over 55 lbs of refrigerant charge, shall be displayed on a conspicuous card located as near as possible to the
- outside the machinery room
- compressor
- boiler
- evaporator
15: Refrigerant piping crossing an open space that affords passageway in any building shall not be less than _____ feet above the floor unless piping is located against the ceiling.
- 7.25'
- 8'4"
- 9.00'
- 7.00'
16: A relief valve shall be located at least ___ above grade.
- 36'
- 10'
- 25'
- 15'
17: Which of the following is an inorganic refrigerant?
- R-22
- Ammonia
- Chlorofluorocarbons
- All of the above
18: How many groups of refrigerants are there?
- 5
- 1
- 3
- 7
19: What would be the classification of a prison?
- Industrial
- Large mercantile
- Place of assembly
- Institutional
20: 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
21: Refrigerants shall be classified by
- toxicity and flammability
- maximum permissible quantities of each group
- requirements for commercial, industrial, and residential occupancies
- color codes
22: When must refrigeration system covered by the code be inspected?
- Annually
- Not required
- Upon installation
- Annually and when installed
23: What is an egress?
- An entrance or exit
- An escape route
- A code violation
- A valve put on the low side of the system to prevent frosting
24: A class B2 refrigerant is considered
- toxic and non-flammable
- non-toxic and highly flammable
- non-toxic and non-flammable
- toxic and somewhat flammable
25: How much clearance do you need around the perimeter of electrical panels?
- 36"
- 18"
- 12"
- 24"