Massachusetts Refrigeration Tech/Contractors practice quiz
ASHRAE/CMR code Prep Quiz
Topics: ASHRAE/CMR
1: What does safe access mean?
A clear unobstructed path to the equipment and controls
Well-lit exit signs
Locked doors
OSHA approved
2: Relief valves are rated in
pounds of air per minute
pounds of air per hour
gallons of water per hour
gallons of water per minute
3: Pressure relief valves shall be marked with the data from
Section IV 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
Section VIII Division of the ASME Boiler & Pressure Code
4: Pressure vessels having an inside diameter of 6” or less shall be protected by
a pressure relief device
Pressure vessels having an inside diameter of 6” or less need no such protection unless otherwise specified
either a fusible plug or a pressure relief device
a fusible plug
5: What type of material can't be used on the outlet of a relief valve?
PVC
Magnesium alloy
Stainless steel
Copper
6: Methyl Chloride is a halogenated refrigerant and should not come in contact with
aluminum
zinc
magnesium
all of the above
7: A hotel is considered a _______ occupancy.
institutional
mercantile
residential
commercial
8: R-22 falls under which safety classification?
B-1
A-2
A-1
B-2
9: What refrigerant is an inorganic compound?
Ammonia
R-132A
R-22
R-410A
10: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.
True
False
11: When can recovered refrigerants be reused?
They can't
Only when used in original owner's equipment
Only if used in 30 days of recovery
None of the above
12: Class 3 refrigerants are
non-flammable
toxic
non-toxic
highly flammable
13: copper and its alloys shall not be used in contact with _____ except as a component of bronze alloys for bearing or other non-refrigerant containing uses.
CFC-11
ammonia
Lithium bromide
HCFC-123
14: When a refrigeration or air conditioning system is installed
it shall be approved by the owner for proper operation.
a field inspection shall be made before it is put into service
the form of certificate shall be authorized by the Department of Pubic safety
it shall not be operated below prescribed pressures
15: The certificate of inspection
shall be $20 and an additional fee of $1 for each tone above 20 tons
shall be posted on the compressor shell or electrical panel at the unit
shall be posted and protected from dirt, water, and other elements
shall be authorized by a notarized insurance company
16: Refrigerant piping crossing an open space that affords passageway in any building shall not be less than _____ feet above the floor unless piping is located against the ceiling.
7.25'
8'4"
9.00'
7.00'
17: What type of refrigerants are NOT flammable?
CHC
HFC
HCFC
All of the above
18: How many gallons of water do you need per pound of ammonia?
100
50
1
10
19: 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
20: The ASHRAE Standard 34 requires what type of alarm for equipment rooms using HCFC-123?
refrigerant sensing
A group sensing
phosgene gas sening
CO Sensing
21: _____ and its alloys are suitable for use with ammonia systems.
Zinc
Magnesium
Aluminum
Copper
22: R-11 belongs to Group
A-2
A-1
B-3
B-1
23: What type of copper is not permitted on refrigeration systems?
Type N
Type L
Type M
Type K
24: When this is installed on the high side of a system, it must be capable of reading 1.2 times the design pressure (ASHRAE 15 9.11.3)