Massachusetts Refrigeration Tech/Contractors practice quiz
ASHRAE/CMR code Prep Quiz
Topics: ASHRAE/CMR
1: Where must a refrigeration contractor's license number be displayed?
Uniforms, checks, and invoices.
Truck, office, every job, and on all equipment
Trucks, invoices, and advertising
Trucks, license plates, and uniforms
2: Which refrigerant was still able to be vented to the atmosphere after July 1, 1992?
R-22
R-113
R-12
R-11
3: Indirect systems using Group II refrigerants
shall have all refrigerant containing parts except piping, installed in a Class T machine room
shall be used for mechanical equipment only
shall be used in refrigeration system in excess of 1,000 lbs
shall be used in refrigeration system less than 1,000 lbs
4: What should not (and can not) be located between a pressure imposing device and a pressure-limiting device?
Stop valve
Muffler
Moisture indicator
Foot valve
5: What was the main reason for enacting the no venting rule of July 1, 1992?
Ozone depletion
Green house effect
Global warming potential
All of the above
6: How many groups of refrigerants are there?
7
3
5
1
7: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within
1 week
30 days
14 days
2 months
8: The test pressure applied to the high side of each factory-assembled refrigerating system shall be at least equal to the design pressure of
2.5 times the design pressure
the aggregate of the high side and low side
the high side
the low side
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 compressor
inside the room, immediately adjacent to each door
on a conspicuous card located near the evaporator
10: Which of the following is an inorganic refrigerant?
R-22
Ammonia
Chlorofluorocarbons
All of the above
11: A premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space such as auditoriums, ballrooms, classrooms, passenger depots, restaurants, and theaters is considered a(n)
institutional occupancy
public assembly occupancy
commercial occupancy
illegal occupancy
12: Liquid level gauge glasses shall have automatic closing shut off valves, except Bull's eye or reflex type.
True
False
13: A “U” or “UM” marking a on a nameplate of a pressure vessels signifies compliance with Section VIII of
the ASME Boiler and Pressure Vessel Code
Section 11.3.1.5 ASHRAE 15 Standard
the ANSI Standard 10.7.2
both the ANSI Standard 10.7.2 and ASHRAE 15 Standard 11.3.1.5
14: 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
15: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.
UL and UR
UM or UL
UV or UR
UL and UM
16: 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
17: 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 authorized by a notarized insurance company
shall be posted and protected from dirt, water, and other elements
18: Name an HCFC refrigerant(s):
R-22
R-123
R-11
both a & b
19: How much clearance do you need around the perimeter of electrical panels?
24"
18"
12"
36"
20: Single compound Refrigerants are classified by what two criteria?
Weight and color
Flammability and toxicity
Flammability and temperature range
Temperature range and hazardousness
21: What type refrigerant is NOT ozone depleting?
CFC
Halon
HCFC
HFC
22: Stop valves shall not be permitted between the system and the
bleed valve
relief valve
condenser
service valve
23: According to the 522 CMR Board of Boilers, refrigerant detectors, alarms, and the refrigeration mechanical room ventilating systems shall be tested
annually
bi-annually
regularly
quarterly
24: Joints in refrigeration piping must be _____ before being covered?
Inspected
Pressurized
Insulated
Leak tested
25: Pressure limiting devices are not required for systems containing less then ________ refrigerants.