LP GAS TEXAS BOBTAIL CORE EXAM 2026 TEST
QUESTIONS AND ANSWERS SCORED A+
✔✔Type 1 Clothes Dryer - ✔✔Primarily used in family living environment. May or may
not be coin-operated for public use.
✔✔Type 2 Clothes Dryer - ✔✔Used in business with direct intercourse of the function of
the public. May or may not be operated by public or hired attendant. May or may not be
coin-operated.
✔✔Type B Gas Vent - ✔✔A vent for venting listed gas appliances with draft hoods and
other Category 1 appliances listed for use with Type B gas vents.
✔✔Type L Gas Vent - ✔✔A vent for venting appliances listed for use with Type L vents
and appliances listed for use with Type B gas vents.
✔✔Unvented Room Heater - ✔✔An unvented, self-contained, freestanding, non-
recessed, fuel-burning appliance for furnishing warm air by gravity or fan circulation to
the space in which installed, directly from the heater without duct connection.
✔✔Vent Connector - ✔✔The pipe or duct that connects a fuel-gas-burning appliance to
a vent or chimney.
✔✔Venting - ✔✔Removal of combustion products as well as process fumes to the outer
air.
✔✔Container - ✔✔Any vessel, including cylinders, tanks, portable tanks, and cargo
tanks, used to transport or store LP-gases.
✔✔Container Appurtenances - ✔✔Devices installed in container openings for safety,
control, or operating purposes.
✔✔DOT - ✔✔U.S. Department of Transportation
✔✔Excess-flow Valve - ✔✔A valve designed to close when the liquid or vapor passing
through it exceeds a prescribed flow rate.
✔✔Flexible Connector - ✔✔A short (not exceeding 60in. overall length) piping system
component that is fabricated from a flexible material and equipped with connections at
both ends.
✔✔Fixed Liquid Level Gauge - ✔✔A liquid level indicator that uses a positive shutoff
vent valve to indicate that the liquid level in a container being filled has reached the
point at which the indicator communicates with the liquid level in the container.
, ✔✔Fixed Maximum Liquid Level Gauge - ✔✔AKA (outage gauge, spitter valve, spew
gauge), A fixed liquid level gauge that indicates the liquid level at which the container is
filled to its maximum permitted filling limit.
✔✔Liquefied Petroleum Gas - ✔✔LP-Gas/LPG Any material having a vapor pressure
not exceeding that allowed for commercial propane that is composed predominantly of
the following hydrocarbons, either by themselves or as mixtures: propane, propylene,
butane (normal butane or isobutane), and butylenes.
✔✔NFPA - ✔✔National Fire Protection Agency
✔✔Container Rules LPSR 9.126 - ✔✔Unless specifically prohibited for use by another
section of the LP Gas Safety Rules, all appurtenances and equipment placed into LP-
gas service must be listed by a nationally recognized testing laboratory such as
Underwriter Labs UL, Factory Mutual FM, or the American Gas Association AGA.
✔✔Uniform Protection Requirements LPSR 9.140 - ✔✔1) Fencing material around LP
systems and storage containers must be chain link with wire at least 12.5 AW gauge, or
industrial-type fencing, or material providing equivalent protection as determined by LP-
Gas Operations.
2) At least 3 ft of clearance must be maintained between guard railing and any part of
an LP Gas transfer system or container, except that 2 ft of clearance must be
maintained for retail cylinder filling service station installations.
✔✔Uniform Safety Requirements LPSR 9.141 - ✔✔ASME containers, except
vaporizers, must be painted white of aluminum, or any other heat-reflective color (such
as light green, light blue). Darker, heat absorbing colors like black are not permitted.
✔✔Uniform Safety Requirements LPSR 9.403 6.6.2.1 - ✔✔Cylinders must be installed
only aboveground, and must be set upon a firm foundation of concrete, masonry, or
metal and be firmly secured against displacement. The cylinder must not be in contact
with the soils.
✔✔Uniform Safety Requirements LPSR 9.403 6.6.3.1 - ✔✔Horizontal ASME containers
designed for permanent stationary service aboveground must be placed on masonry or
noncombustable structural supports located on conrete or masonry foundations, and the
containers must not be in contact with the soil.
✔✔Uniform Safety Requirements NFPA 5.2.1.4 - ✔✔Containers that show excessive
denting, bulging, gouging, or corrosion must be removed from service.
✔✔Uniform Safety Requirements NFPA 58 6.3.1 - ✔✔Containers installed outside of
buildings, whether of the portable type replaced on a cylinder-exchange basis or
permanently installed and refilled at the installation, must be located with respect to the
QUESTIONS AND ANSWERS SCORED A+
✔✔Type 1 Clothes Dryer - ✔✔Primarily used in family living environment. May or may
not be coin-operated for public use.
✔✔Type 2 Clothes Dryer - ✔✔Used in business with direct intercourse of the function of
the public. May or may not be operated by public or hired attendant. May or may not be
coin-operated.
✔✔Type B Gas Vent - ✔✔A vent for venting listed gas appliances with draft hoods and
other Category 1 appliances listed for use with Type B gas vents.
✔✔Type L Gas Vent - ✔✔A vent for venting appliances listed for use with Type L vents
and appliances listed for use with Type B gas vents.
✔✔Unvented Room Heater - ✔✔An unvented, self-contained, freestanding, non-
recessed, fuel-burning appliance for furnishing warm air by gravity or fan circulation to
the space in which installed, directly from the heater without duct connection.
✔✔Vent Connector - ✔✔The pipe or duct that connects a fuel-gas-burning appliance to
a vent or chimney.
✔✔Venting - ✔✔Removal of combustion products as well as process fumes to the outer
air.
✔✔Container - ✔✔Any vessel, including cylinders, tanks, portable tanks, and cargo
tanks, used to transport or store LP-gases.
✔✔Container Appurtenances - ✔✔Devices installed in container openings for safety,
control, or operating purposes.
✔✔DOT - ✔✔U.S. Department of Transportation
✔✔Excess-flow Valve - ✔✔A valve designed to close when the liquid or vapor passing
through it exceeds a prescribed flow rate.
✔✔Flexible Connector - ✔✔A short (not exceeding 60in. overall length) piping system
component that is fabricated from a flexible material and equipped with connections at
both ends.
✔✔Fixed Liquid Level Gauge - ✔✔A liquid level indicator that uses a positive shutoff
vent valve to indicate that the liquid level in a container being filled has reached the
point at which the indicator communicates with the liquid level in the container.
, ✔✔Fixed Maximum Liquid Level Gauge - ✔✔AKA (outage gauge, spitter valve, spew
gauge), A fixed liquid level gauge that indicates the liquid level at which the container is
filled to its maximum permitted filling limit.
✔✔Liquefied Petroleum Gas - ✔✔LP-Gas/LPG Any material having a vapor pressure
not exceeding that allowed for commercial propane that is composed predominantly of
the following hydrocarbons, either by themselves or as mixtures: propane, propylene,
butane (normal butane or isobutane), and butylenes.
✔✔NFPA - ✔✔National Fire Protection Agency
✔✔Container Rules LPSR 9.126 - ✔✔Unless specifically prohibited for use by another
section of the LP Gas Safety Rules, all appurtenances and equipment placed into LP-
gas service must be listed by a nationally recognized testing laboratory such as
Underwriter Labs UL, Factory Mutual FM, or the American Gas Association AGA.
✔✔Uniform Protection Requirements LPSR 9.140 - ✔✔1) Fencing material around LP
systems and storage containers must be chain link with wire at least 12.5 AW gauge, or
industrial-type fencing, or material providing equivalent protection as determined by LP-
Gas Operations.
2) At least 3 ft of clearance must be maintained between guard railing and any part of
an LP Gas transfer system or container, except that 2 ft of clearance must be
maintained for retail cylinder filling service station installations.
✔✔Uniform Safety Requirements LPSR 9.141 - ✔✔ASME containers, except
vaporizers, must be painted white of aluminum, or any other heat-reflective color (such
as light green, light blue). Darker, heat absorbing colors like black are not permitted.
✔✔Uniform Safety Requirements LPSR 9.403 6.6.2.1 - ✔✔Cylinders must be installed
only aboveground, and must be set upon a firm foundation of concrete, masonry, or
metal and be firmly secured against displacement. The cylinder must not be in contact
with the soils.
✔✔Uniform Safety Requirements LPSR 9.403 6.6.3.1 - ✔✔Horizontal ASME containers
designed for permanent stationary service aboveground must be placed on masonry or
noncombustable structural supports located on conrete or masonry foundations, and the
containers must not be in contact with the soil.
✔✔Uniform Safety Requirements NFPA 5.2.1.4 - ✔✔Containers that show excessive
denting, bulging, gouging, or corrosion must be removed from service.
✔✔Uniform Safety Requirements NFPA 58 6.3.1 - ✔✔Containers installed outside of
buildings, whether of the portable type replaced on a cylinder-exchange basis or
permanently installed and refilled at the installation, must be located with respect to the
