Massachusetts Refrigeration Tech/Contractors practice quiz
ASHRAE/CMR code Prep Quiz
Topics: ASHRAE/CMR
1: R-22 is considered a(n)
HFC
HCFC
CFC
HCFCH
2: A premise or that portion of a premise where people transact business, receive personal service, or purchase foods, other goods is considered a
public assembly occupancy.
business occupancy
commercial occupancy
mercantile occupancy
3: When a receiver is greater than 3 cubic feet but less than 10 cubic feed, what is the minimum relief device required?
fusible plug
relief valve
rupture disc
all of the above
4: All electrical work done on refrigeration systems must comply with
ASHREA-15 Section 9.2.1
Department of Energy
NEC and Massachusetts Modifications
OSHA
5: What does safe access mean?
Locked doors
OSHA approved
Well-lit exit signs
A clear unobstructed path to the equipment and controls
6: A plug containing an alloy that will melt at a specific temperature to relief pressure is a
fusible plug
relief plug
fusion plug
rupture plug
7: Group A2 refrigerants have a ______ toxicity rating than Group B1 refrigerants.
higher
the same
lower
there is no Group B1 refrigerants
8: The certificate of inspection
shall be posted and protected from dirt, water, and other elements
shall be authorized by a notarized insurance company
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
9: When a refrigerating machinery room is used, the emergency procedures shall be posted
outside the room, immediately adjacent to each door
on a conspicuous card located near the evaporator
inside the room, immediately adjacent to each door
on a conspicuous card located near the compressor
10: Liquid level gauge glasses shall have automatic closing shut off valves, except Bull's eye or reflex type.
True
False
11: Emergency shutdown procedures, including precautions to be observed in case of a breakdown or leak over 55 lbs of refrigerant charge, shall be displayed on a conspicuous card located as near as possible to the
evaporator
outside the machinery room
boiler
compressor
12: Field Inspections of refrigeration and A/C systems in Massachusetts shall be made by
District Engineering Inspectors
Commissioned Inspectors
Master licensed Technician
both a or b
13: Relief valves are rated in
pounds of air per hour
pounds of air per minute
gallons of water per hour
gallons of water per minute
14: 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)
Pressure gauge
Temperature gauge
Sight glass gauge
All of the above
15: Which refrigerant class listed below is the most flammable?
C3
B2
A2
A3
16: Class A refrigerants are considered
non-flammable
flammable
non-toxic
toxic
17: What would be the classification of a church?
Large mercantile
Place of assembly
Industrial
Institutional
18: 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
the liquid side of the system
high side of the system
the vapor side of the system
19: The main cause of enacting the "no vending rule" of July 1st 1992 was
global warming potential
ozone depletion
both a & b
None of the above
20: The dial of a pressure gauge, when installed on the high side of a system be graduated 1.2 times the designed pressure.
True
False
21: Joints in refrigeration piping must be _____ before being covered?
Pressurized
Inspected
Leak tested
Insulated
22: How many refrigerant classifications are there for toxicity?
5
3
1
2
23: R-123 belongs to Group
A-3
B-3
B-2
B-1
24: The Board of Boilers adopts by reference
the MACS Pressure Vessel Code of Massachusetts
the 1997 ANSI/ASHRAE Safety Code
Montreal Protocol Safety Code
MSCA Code
25: How far from the window does a relief valve need to be according to ASHRAE-15?