Massachusetts Refrigeration Tech/Contractors practice quiz
ASHRAE/CMR code Prep Quiz
Topics: ASHRAE/CMR
1: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
330 lbs
660 lbs
500 lbs
55 lbs
2: Liquid level gauges must be provided with what?
Automatic shut-offs
A relief valve
A low level mark
A red line
3: What is R-22?
HFC
Chlorodifluoromethane
CCFCM
Chlorofluoromethane
4: Pressure relief valves shall be marked with the data from
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
Section I Division VIII of ASME Boiler & Pressure Code
5: A professional or office building would be considered what type of occupancy?
mercantile
commercial
public assembly
business
6: When testing systems using non-positive displacement compressors, the entire system shall be considered for test purposes as the low side.
True
False
7: A premise or that portion of a premise where people transact business, receive personal service, or purchase foods, other goods is considered a
mercantile occupancy
public assembly occupancy.
commercial occupancy
business occupancy
8: When is the only time you can leave a service container attached to a system?
Leaking system
Recovery
Charging
Both b and c
9: Refrigeration piping before being buried shall be
leak tested
encased in pipe duct
pressure tested
All of the above
10: A pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.
50
25
66
22
11: The 522 CMR 9.00 has adopted for reference ASHRAE ____
15
25
10
III
12: Pressure vessels having design pressures of 15 psig or less shall have the strength to withstand at least ______times the design pressure.
2.0
3.0
5.5
2.5
13: R-123 belongs to Group
B-1
B-3
A-3
B-2
14: Class A refrigerants are considered
non-flammable
toxic
non-toxic
flammable
15: A High-Probablity system
is such that a leak of refrigerant from failed connections will enter the occupied space
is a system highly likely to leak from 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 failed connections will enter the unoccupied space
16: Can a R22 line set be reused for a 410A system and if it can be reused, what must be done to it?
Flush with ammonia
Flush with R-718
Flush with R-11
Flush with RX-11
17: Pipe identification labels are required when the system contains more than
110 lbs
55 lbs
120 lbs
65 lbs
18: Refrigeration devices shall be equipped with a ____ to protect against unexpected pressure due to a malfunction or fire?
Relief valve
T&P device
Temperature limiter device
Circuit Breaker
19: A relief valve shall be located at least ___ above grade.
10'
36'
25'
15'
20: 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
21: Name an HCFC refrigerant(s):
R-22
R-123
R-11
both a & b
22: How much clearance do you need around the perimeter of electrical panels?
36"
18"
12"
24"
23: Where must a refrigeration contractor's license number be displayed?
Trucks, invoices, and advertising
Uniforms, checks, and invoices.
Truck, office, every job, and on all equipment
Trucks, license plates, and uniforms
24: R-22 is considered a(n)
HFC
HCFC
HCFCH
CFC
25: A total of all group A-2,B-2, A-3, and B-3 refrigerants shall not exceed ____ lb in the occupied areas and machinery rooms of institutional occupancies.