Topics: ASHRAE/CMR
1: What would be the classification of a church?
- Industrial
- Place of assembly
- Large mercantile
- Institutional
2: How far from the window does a relief valve need to be according to ASHRAE-15?
- At least 30'
- There is no minimum for relief valve and windows.
- At least 20'
- At least 40'
3: Ammonia shall be discharged into ____________ or a tank containing one gallon of water for every pound of ammonia.
- the atmosphere
- a de-pressurized recovery tank with a silver top and yellow bottom
- a tank containing two pounds of a water/lithium bromide mix for every pound of ammonia
- All of the above
4: The dial of a pressure gauge, when installed on the high side of a system be graduated 1.2 times the designed pressure.
- True
- False
5: Where a refrigeration or air conditioning system is installed,
- A field inspection shall be made before it is put into service
- the form or certificate shall be authorized by the Department of Public Safety
- The company who installed the system must notify the fire department in the jurisdiction where installed
- it shall not be operated below prescribed pressuers
6: Can you use Ammonia in industrial applications?
- When mixed with R-718
- Yes, always
- No, never
- Yes, Under certain condidtions
7: The Board of Boilers adopts by reference
- MSCA Code
- the 1997 ANSI/ASHRAE Safety Code
- Montreal Protocol Safety Code
- the MACS Pressure Vessel Code of Massachusetts
8: Refrigerant restricted in 2004 but used for transition for decades:
- R-123
- R-11
- R-22
- R-134A
9: The test pressure applied to the high side of each factory-assembled refrigerating system shall be at least equal to the design pressure of
- 2.5 times the design pressure
- the high side
- the aggregate of the high side and low side
- the low side
10: A pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.
- 22
- 66
- 50
- 25
11: Class A refrigerants are considered
- non-toxic
- non-flammable
- flammable
- toxic
12: When must refrigeration system covered by the code be inspected?
- Not required
- Annually
- Annually and when installed
- Upon installation
13: NH3 is
- ammonia
- R-508A
- R-718
- lithium bromide
14: When is the space above a drop ceiling calculated as space for refrigerant limit quantities?
- When there is a space 6' or more above it
- When there are sprinklers above
- When it's used as part of a supply or return air system
- When its white
15: It shall be the duty of the person in charge of the premises on which a refrigeration system containing more than ___ lbs of refrigerant is installed to provide a schematic drawing or panel giving directions for the operation of the system.
- 55
- 75
- 15
- 50
16: Which refrigerant replaced R-12?
- R-410A
- R-407A
- R-134A
- R-22
17: What is R-611’s ASHRAE Safety Code?
- C3
- B3
- B2
- A2
18: R-22 falls under which safety classification?
- B-2
- A-2
- A-1
- B-1
19: A machine room with a refrigerant system using ammonia shall
- be provided with a continuously operated ventilation system
- be considered a non-hazardous location in accordance with National Electrical code
- have no flame producing apparatus permanently installed and operated
- All of the above
20: An evaporator coil located near heating coil shall have a pressure-relief device installed within ______ inches of the evaporator.
- 48
- 24
- 18
- 36
21: What is an example of institutional occupancy?
- Dorms
- Shopping mall
- Football stadium
- Hospital
22: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.
- UM or UL
- UL and UM
- UV or UR
- UL and UR
23: What refrigerant doesn't have to be classifted?
- R-711
- R-134a
- R-718
- R-717
24: What should not (and can not) be located between a pressure imposing device and a pressure-limiting device?
- Muffler
- Stop valve
- Moisture indicator
- Foot valve
25: High pressure controls should be set no higher than
- 25% of set point
- 80% of set point
- 10% of set point
- 90% of set point