MASSACHUSETTS LATEST
REFRIGERATION
LICENSE EXAM
What type of pressure relief device is used on a CO2 system? -
ANSWERS-Rupture Disk
Whoever owns/uses a refrigeration or air conditioning system covered
by this code - ANSWERS-shall make application for inspections to the
Chief of Inspectors
How far from the ground does a relief valve need to be? - ANSWERS-
15'
When must refrigeration system covered by the code be inspected? -
ANSWERS-Anually and when installed
All serviceable components of a refrigeration system shall be provided
with - ANSWERS-Safe Acess
The total amount of refrigerant stored in a machinery room in all
containers not provided with relief valves shall not exceed -
ANSWERS-330 Lbs
END OF
PAGE
1
, MASSACHUSETTS LATEST
REFRIGERATION
LICENSE EXAM
Pressure vessels with an internal volume of 10 cubic feet or more -
ANSWERS-Use rupture disk or dual pressure relief
Pressure vessels with an internal volume of 3 cubic feet or more -
ANSWERS-Shall use pressure relief devices
Large mercantile occupancy is - ANSWERS-a premise of that portion of
a premise where more than 100 persons congregate on levels above of
below street level to purchase personal merchandise.
What is the minimum size of the discharge pipe? - ANSWERS-Same
size as the outlet of the relief
A machine room with a refrigerant system using ammonia shall -
ANSWERS-- be provided with a continuously operated ventilation
system
- be considered a non-hazardous location in accordance with national
Electrical code
- have no flame producing apparatus permanently installed and operated
END OF
PAGE
2
, MASSACHUSETTS LATEST
REFRIGERATION
LICENSE EXAM
Direct systems using Group II refrigerants - ANSWERS-Shall not be
used for comfort cooling
According to the 522 CMR Board of Boilers, refrigerant detectors,
alarms, and the refrigeration mechanical room ventilating systems shall
be tested - ANSWERS-Anually
Pressure vessels having design pressures of 15 psig or less shall have the
strength to withstand at least ______times the design pressure. -
ANSWERS-3 x
Pressure vessels with an internal volume of 3 cubic feet or less -
ANSWERS-shall use pressure relief devices or fusible plugs
R-22 - ANSWERS-Chlorodifluoromethane
A micron is - ANSWERS-one thousandths of a millimeter
END OF
PAGE
3
REFRIGERATION
LICENSE EXAM
What type of pressure relief device is used on a CO2 system? -
ANSWERS-Rupture Disk
Whoever owns/uses a refrigeration or air conditioning system covered
by this code - ANSWERS-shall make application for inspections to the
Chief of Inspectors
How far from the ground does a relief valve need to be? - ANSWERS-
15'
When must refrigeration system covered by the code be inspected? -
ANSWERS-Anually and when installed
All serviceable components of a refrigeration system shall be provided
with - ANSWERS-Safe Acess
The total amount of refrigerant stored in a machinery room in all
containers not provided with relief valves shall not exceed -
ANSWERS-330 Lbs
END OF
PAGE
1
, MASSACHUSETTS LATEST
REFRIGERATION
LICENSE EXAM
Pressure vessels with an internal volume of 10 cubic feet or more -
ANSWERS-Use rupture disk or dual pressure relief
Pressure vessels with an internal volume of 3 cubic feet or more -
ANSWERS-Shall use pressure relief devices
Large mercantile occupancy is - ANSWERS-a premise of that portion of
a premise where more than 100 persons congregate on levels above of
below street level to purchase personal merchandise.
What is the minimum size of the discharge pipe? - ANSWERS-Same
size as the outlet of the relief
A machine room with a refrigerant system using ammonia shall -
ANSWERS-- be provided with a continuously operated ventilation
system
- be considered a non-hazardous location in accordance with national
Electrical code
- have no flame producing apparatus permanently installed and operated
END OF
PAGE
2
, MASSACHUSETTS LATEST
REFRIGERATION
LICENSE EXAM
Direct systems using Group II refrigerants - ANSWERS-Shall not be
used for comfort cooling
According to the 522 CMR Board of Boilers, refrigerant detectors,
alarms, and the refrigeration mechanical room ventilating systems shall
be tested - ANSWERS-Anually
Pressure vessels having design pressures of 15 psig or less shall have the
strength to withstand at least ______times the design pressure. -
ANSWERS-3 x
Pressure vessels with an internal volume of 3 cubic feet or less -
ANSWERS-shall use pressure relief devices or fusible plugs
R-22 - ANSWERS-Chlorodifluoromethane
A micron is - ANSWERS-one thousandths of a millimeter
END OF
PAGE
3
