Topics: ASHRAE/CMR
1: What is an egress?
- A code violation
- A valve put on the low side of the system to prevent frosting
- An entrance or exit
- An escape route
2: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.
- 75
- 50
- 15
- 20
3: Each machinery room shall contain
- smoke and fire alarms as well as three means of egress and that egress must meet 528 CMR ventilation requirements
- high and low pressure controls
- a refrigerant detector located in an area where the refrigerant from a leak will concentrate
- a toxicity detector where the presence of ammonia or lithium bromide from a leak will concentrate
4: Trichlorofluoromethane is the name of what refrigerant?
- R-502
- R-113
- R-12
- R-11
5: Relief valves are rated in
- gallons of water per hour
- gallons of water per minute
- pounds of air per hour
- pounds of air per minute
6: Refrigerants shall be classified by
- toxicity and flammability
- requirements for commercial, industrial, and residential occupancies
- maximum permissible quantities of each group
- color codes
7: According to ASHRAE Standard-15 9.8 Positive Displacement Compressor Protection, the pressure-relief device discharge into
- the low-pressure side of the system
- the high side of the system
- the liquid receiver
- both a and c are correct
8: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within
- 30 days
- 1 week
- 14 days
- 2 months
9: 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
10: The color code of a tank of ammonia is
- white
- lavender
- silver
- light green
11: How much clearance do you need around the perimeter of electrical panels?
- 12"
- 36"
- 24"
- 18"
12: Pipe identification labels are required when the system contains more than
- 65 lbs
- 120 lbs
- 55 lbs
- 110 lbs
13: A positive displacement compressor is
- a compressor in which the increase in pressure is attained by changing the internal volume of the compression chamber
- is a reciprocating type compressor with 2 or more pistons
- where the compressor's suction pressure and the compressor;s discharge pressure is more than 50 PSI
- a compressor in which the increase in pressure is attained by changing the internal pressure of the compression chamber
14: A High-Probablity 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 failed connections will enter the unoccupied space
- is a system highly likely to leak from a failed connection or component of such system
- is such that a leak of refrigerant from failed connections will enter the occupied space
15: Joints in refrigeration piping must be _____ before being covered?
- Inspected
- Leak tested
- Pressurized
- Insulated
16: Methyl Chloride is a halogenated refrigerant and should not come in contact with
- aluminum
- zinc
- magnesium
- all of the above
17: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered
- commercial occupancy
- mixed occupancy
- public assembly occupancy
- institutional occupancy
18: A “U” or “UM” marking a on a nameplate of a pressure vessels signifies compliance with Section VIII of
- the ASME Boiler and Pressure Vessel Code
- Section 11.3.1.5 ASHRAE 15 Standard
- the ANSI Standard 10.7.2
- both the ANSI Standard 10.7.2 and ASHRAE 15 Standard 11.3.1.5
19: When must refrigeration system covered by the code be inspected?
- Annually
- Not required
- Upon installation
- Annually and when installed
20: Machinery rooms shall be vented to _____________ and utilizing mechanical ventilation.
- the mechanical room housing the refrigeration system
- the outdoors
- Machinery rooms need not be vented
- the return air ducted system
21: A hotel is considered a _______ occupancy.
- institutional
- commercial
- mercantile
- residential
22: Pressure vessels nameplate markings must be compliant with the
- ASHRAE 34 Standards
- CMR-588 & CMR-528
- ASME Boiler and Pressure Vessel Code
- All of the Above
23: How many different groups of refrigerants are there?
- 7
- 15
- 3
- 11
24: A room having machinery but no flame producing apparatus permanently installed and operated is considered a
- Class M machinery room
- Class T machinery room
- Class A machinery room
- Class B machinery room
25: Defined process piping by code CMR (528)
- Any piping that conveys a solid, liquid or gas that is not part of the plumbing or fire protection system
- Any piping in an industrial space
- Any piping in an industrial or commercial space
- All of the above