Topics: ASHRAE/CMR
1: What would be the classification of a church?
- Industrial
- Large mercantile
- Institutional
- Place of assembly
2: A factory-sealed system containing less than 22lbs. of Group A1 refrigerant
- does not require a pressure-limiting device
- shall have a pressure limiting device installed on the high side of the system
- shall be inspected by the Boiler of Inspectors bi-annually
- shall have a pressure limiting device and a pressure relief valve installed
3: 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
4: Stop valves shall not be permitted between the system and the
- bleed valve
- service valve
- condenser
- relief valve
5: Doors communicating with outside from a mechanical room must be?
- Steel, approved, weather-stripped
- Self-closing, approved, fire door
- Self-closing, aligned, fire door
- Self-closing, wooden, fire door
6: What type of refrigerants are NOT flammable?
- CHC
- HFC
- HCFC
- All of the above
7: Refrigerants shall be classified by
- color codes
- toxicity and flammability
- requirements for commercial, industrial, and residential occupancies
- maximum permissible quantities of each group
8: R-410A is classified as a ____ refrigerant on the safety matrix.
- A-2
- A-1
- B-2
- B-1
9: When is the space above a drop ceiling calculated as space for refrigerant limit quantities?
- When its white
- When it's used as part of a supply or return air system
- When there is a space 6' or more above it
- When there are sprinklers above
10: When a pressure gauge is permanently installed on a system, it must be ___ times the design pressure of the system.
- 1.2
- 2.2
- 1.5
- 1
11: How far from the window does a relief valve need to be according to ASHRAE-15?
- At least 20'
- At least 40'
- There is no minimum for relief valve and windows.
- At least 30'
12: 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
- shall not be prohibited
- shall be prohibited
- of Group B2 refrigerant shall be prohibited
13: What happens after your initial inspection of a pressure vessel?
- Inspector leaves a metal tag with a certification listed on it
- Notify the AHJ to let them know that the system been inspected
- Notify the Fire Marshal that the system has been inspected and approved
- There is a temporary shut-down until a final inspection can be performed.
14: When air is ducted through a machine room that services occupied space, What must be done?
- Insulated and cross broke
- Welded and seamed.
- Flanged and gasketed
- Ducted and sealed
15: What pipe can not be used for refrigeration?
- L
- M
- K
- N
16: Pressure vessels having an inside diameter of 6” or less shall be protected by
- either a fusible plug or a pressure relief device
- a fusible plug
- Pressure vessels having an inside diameter of 6” or less need no such protection unless otherwise specified
- a pressure relief device
17: Where are the three places that the discharge from an ammonia relief valve be piped?
- To chemical neutralizing tank only
- Underground, into drain, into mechanical room
- Atmosphere, Tank containing water, where the AHJ indicates.
- None of the above.
18: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.
- 50
- 20
- 75
- 15
19: How much refrigerant can be stored in a mechanical room outside of the system?
- 100
- 330
- 150
- 200
20: Who is permitted to access a refrigeration machine room?
- Contractors only
- Any employee
- Anyone, it's a completely safe area
- Authorized persons only
21: Setting a pressure relief device shall not exceed ___ of the design pressure
- 90%
- 100%
- 75%
- 80%
22: How many groups of refrigerants are there?
- 5
- 7
- 3
- 1
23: 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
24: What refrigerant is an inorganic compound?
- R-132A
- Ammonia
- R-410A
- R-22
25: Refrigeration piping before being buried shall be
- leak tested
- encased in pipe duct
- pressure tested
- All of the above