Topics: ASHRAE/CMR
1: How far from the ground does a relief valve need to be?
- Not more than 3' above grade
- At least 15' above grade
- At least 20' above grade
- At least 25' above grade
2: Liquid level gauges must be provided with what?
- A relief valve
- A red line
- A low level mark
- Automatic shut-offs
3: Ammonia is under what safety classification?
- A3
- B1
- B2
- B3
4: Most CFC's are
- flammable
- inert but toxic
- toxic
- inert
5: What is not a requirement of a Class T machine room?
- Tight fitting doors
- Automatic ventilation
- Fire hose connected to the building fire protection system.
- Self-closing doors
6: A room having machinery but no flame producing apparatus permanently installed and operated is considered a
- Class B machinery room
- Class M machinery room
- Class A machinery room
- Class T machinery room
7: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.
- 22
- 33
- 18
- 50
8: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.
- True
- False
9: 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
- boiler
- outside the machinery room
- evaporator
- compressor
10: What happens after your initial inspection of a pressure vessel?
- Inspector leaves a metal tag with a certification listed on it
- 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.
11: When a pressure gauge is permanently installed on a system, it must be ___ times the design pressure of the system.
- 1
- 1.5
- 2.2
- 1.2
12: What is R-22?
- Chlorodifluoromethane
- HFC
- CCFCM
- Chlorofluoromethane
13: The Department that certifies the transportation of refrigerant is the
- RSES
- EPO
- DOT
- EPA
14: A hotel is considered a _______ occupancy.
- commercial
- residential
- institutional
- mercantile
15: High pressure controls should be set no higher than
- 80% of set point
- 25% of set point
- 90% of set point
- 10% of set point
16: Refrigerants shall be classified by
- toxicity and flammability
- requirements for commercial, industrial, and residential occupancies
- color codes
- maximum permissible quantities of each group
17: A Low-Probability System
- is such that a leak of refrigerant from a failed connection will enter the occupied space
- is a system highly likely to leak form a failed connection or component of such system
- is such that any leak will cause injury or death to anyone within a 100 square foot area
- is such that a leak of refrigerant from a failed connection can not enter the occupied space
18: Indirect systems using Group II refrigerants
- shall be used in refrigeration system less than 1,000 lbs
- shall be used for mechanical equipment only
- shall be used in refrigeration system in excess of 1,000 lbs
- shall have all refrigerant containing parts except piping, installed in a Class T machine room
19: What is R-290’s ASHRAE safety code?
- B1
- B2
- A2
- A3
20: Name a CFC refrigerant(s):
- R-11
- R-12
- R-123
- both a & b
21: Evaporators within 18" of a heating coil must be equipped with a
- low limit control
- pressure relief device
- high limit control
- zone valve
22: Single compound Refrigerants are classified by what two criteria?
- Weight and color
- Temperature range and hazardousness
- Flammability and temperature range
- Flammability and toxicity
23: 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)
- institutional occupancy
- illegal occupancy
- public assembly occupancy
- commercial occupancy
24: Methyl Chloride is a halogenated refrigerant and should not come in contact with
- aluminum
- zinc
- magnesium
- all of the above
25: 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