Massachusetts Refrigeration Tech/Contractors practice quiz
ASHRAE/CMR code Prep Quiz
Topics: ASHRAE/CMR
1: When air is ducted through a machine room that services occupied space, What must be done?
Ducted and sealed
Insulated and cross broke
Welded and seamed.
Flanged and gasketed
2: The certificate of inspection
shall be authorized by a notarized insurance company
shall be posted on the compressor shell or electrical panel at the unit
shall be $20 and an additional fee of $1 for each tone above 20 tons
shall be posted and protected from dirt, water, and other elements
3: 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
1,000
100,000
10,000
4: Refrigerant restricted in 2004 but used for transition for decades:
R-11
R-123
R-134A
R-22
5: What type of refrigerants are NOT flammable?
CHC
HFC
HCFC
All of the above
6: 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
7: A 3-cubic foot receiver must have what type of relief valve?
fusible plug
relief valve
rupture device
none of the above
8: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
500 lbs
660 lbs
330 lbs
55 lbs
9: Industrial occupancy is
a premise or that portion of a premise that is not open to the public, where access by authorized persons is controlled, and that is used to manufacture, process, or store goods, such as chemicals, food, ice, meat, or petroleum.
is a premise or that portion of a premise where large number of people congregate and from which occupants cannot quickly vacate the space.
a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
Both a and b are correct
10: A pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.
25
22
66
50
11: A room having machinery but no flame producing apparatus permanently installed and operated is considered a
Class A machinery room
Class M machinery room
Class T machinery room
Class B machinery room
12: What type of material can't be used on the outlet of a relief valve?
Copper
Magnesium alloy
PVC
Stainless steel
13: What refrigerant were phased out in 2004?
R-134a
R-12
R-22
R-11
14: Refrigeration piping before being buried shall be
leak tested
encased in pipe duct
pressure tested
All of the above
15: Pressure vessels of 10 cubic feet or more gross volume shall use
at least one rupture member
a dual pressure-relief valve if charging into the atmosphere
at least three means of discharge and/or rupture discs
both a and b are correct
16: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered
mixed occupancy
commercial occupancy
institutional occupancy
public assembly occupancy
17: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.
75
20
50
15
18: How much clearance do you need around the perimeter of electrical panels?
36"
18"
24"
12"
19: When systems are protected by a high pressure relief device, the compressor's pressure limiting device shall be set at or below ____ % of the operating pressure of the high side relief device.
100
110
80
90
20: Indirect systems using Group II refrigerants
shall be used in refrigeration system less than 1,000 lbs
shall have all refrigerant containing parts except piping, installed in a Class T machine room
shall be used in refrigeration system in excess of 1,000 lbs
shall be used for mechanical equipment only
21: The gauge thickness required on a CO2 tank construction is
1/16"
3/32"
1/8"
5/16"
22: 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.
15
50
75
55
23: Pressure relief valves shall be marked with the data from
Section I Division VIII of ASME Boiler & Pressure Code
Section IV Division of the ASME Boiler & Pressure Code
Section VIII Division of the ASME Boiler & Pressure Code
Section XIII Division of the ASME Boiler & Pressure Code
24: What must be done if refrigeration lines pass through a concrete floor?
insulated
installed through a pipe casing
moisture barrier
leak checked
25: Halogen refrigerants are corrosive to which type of metal?