Massachusetts Refrigeration Tech/Contractors practice quiz
ASHRAE/CMR code Prep Quiz
Topics: ASHRAE/CMR
1: What would be the classification of a church?
Industrial
Large mercantile
Place of assembly
Institutional
2: Name three things that must be done when changing refrigeration lubricant?
Make sure it's compatible, notify owner, notify AHJ
Place sign, check for leaks, insulate
Nothing must be done
You can't change lubricants.
3: 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
4: Group A2 refrigerants have a ______ toxicity rating than Group B1 refrigerants.
higher
the same
there is no Group B1 refrigerants
lower
5: The Department that certifies the transportation of refrigerant is the
RSES
EPA
EPO
DOT
6: The pressure relief device of a positive displacement compressor shall discharge in the ______________or in accordance with 9.7.8
low side of the system
high side of the system
the vapor side of the system
the liquid side of the system
7: How many CFMs are required per square foot of commercial office occupied space
15 CFM
20 CFM
.5 CFM
5 CFM
8: Refrigerants shall be classified by
color codes
maximum permissible quantities of each group
requirements for commercial, industrial, and residential occupancies
toxicity and flammability
9: A class B1 refrigerant is considered
non-toxic and non-flammable
non-toxic but highly flammable
toxic but non-flammable
toxic and somewhat flammable
10: A person holding a license as a refrigeration technician may connect or disconnect for the purpose of installation, repair, or replacement, any electrical device or control to be a part of a refrigeration or air conditioning system, from the
breaker panel in
load-side of the contactor in
first disconnect in
24 volt secondary side of the Class 2 transformer to the thermostat
11: What is the refrigerant dichlorodifluoromethane?
R-12
R-134A
R-123
R-22
12: How far from the ground does a relief valve need to be?
Not more than 3' above grade
At least 25' above grade
At least 15' above grade
At least 20' above grade
13: Halogen refrigerants are corrosive to which type of metal?
magnesium
stainless steel
black iron
copper
14: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.
True
False
15: What section of ASHRAE-15 governs pressure vessels?
Section 6 ASHRAE-34 ASME VIII unfired
Section 9 ASHRAE-15 ASME VIII unfired
OSHA
Section 7 ASHRAE-15 ASME VIII fired
16: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.
50
22
33
18
17: 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
18: The 522 CMR 9.00 has adopted for reference ASHRAE ____
III
15
10
25
19: What is not a requirement of a class T machine room?
self-closing doors
tight fitting doors
automatic ventilation
fire hose connection to the building fire protection system
20: Ammonia can come in contact with _______ ?
Aluminum
Copper
Copper tubing
Brass
21: Liquid level gauges shall have _____________ with one exception being that of the liquid level gauge bull’s eye type.
color-coded glass to determine type of refrigerant
moisture indicators
automatic closing shut-off valves
All of the above
22: Stop valves shall not be permitted between the system and the
condenser
service valve
bleed valve
relief valve
23: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
55 lbs
660 lbs
330 lbs
500 lbs
24: The discharge relief valve is located (9.4.6)
between the compressor and the stop valve
between the compressor and oil separator
on top of the condensor
between the compressor and reciever
25: What is not a requirement of a Class T machine room?
Self-closing doors
Fire hose connected to the building fire protection system.