TEXAS LP-GAS RRC QUESTIONS AND
ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT RATED A+
||UPDATED 2026/2027
Container
-ANSWER ✔✔ Any vessel, including cylinders, tanks, portable tanks, and cargo
tanks used for the transporting or storage of LP-gases.
Container Appurtenances
-ANSWER ✔✔ Devices installed in container openings for safety, control, or
operating purposes, including pressure-relief valves, shutoff valves, backflow
check valves, excess-flow valves, internal valves, liquid level gauges, pressure
gauges, and plugs.
Fixed Maximum Liquid Level Gauge
-ANSWER ✔✔ A fixed liquid level gauge (such as an outage gauge, spitter valve,
or spew gauge) that indicates when the liquid level in a container has reached its
maximum permitted filling limit.
Maximum Allowable Working Pressure (MAWP) -ANSWER ✔✔The maximum
pressure at which a pressure vessel is to operate as described by the ASME boiler
and Pressure Vessel code.
Point of Transfer -ANSWER ✔✔The location where connections and
disconnections are made or where LP-gas is vented to the atmosphere in the course
of transfer operations.
Pressure Relief Device -ANSWER ✔✔[popoff valve] designed to open to prevent
a rise of internal pressure in excess of a specified value due to emergency or
abnormal conditions.
Source of Ignition -ANSWER ✔✔Devices or equipment that, because of their
modes of use or operation, are capable of providing sufficient thermal energy to
ignite flammable LP-gas vapor-air mixtures when introduced into such a mixture
or when such a mixture comes into contact with them, and that will permit
propagation of flame away from the..
, Mobile Fuel Container -ANSWER ✔✔An LP-gas container mounted on a vehicle
to store LP-gas as the fuel supply to an auxiliary engine other than the engine to
propel the vehicle or for other uses on the vehicle.
Motor Fuel Container -ANSWER ✔✔[engine fuel container] An LP-gas container
mounted on a vehicle to store LP-gas as the fuel supply to an engine used to propel
the vehicle.
Containers shall be _______ , ________ , _________ , and __________ in
accordance with the regulations of the U.S Department of Transportation. -
ANSWER ✔✔Designed, fabricated, tested, and Marked
ASME LP-gas engine fuel and mobile containers must be designed to provide at
least the following maximum allowable working pressure. -ANSWER ✔✔250psi
if constructed prior to April 1, 2001 or 312psi on or after April 1, 2001.
LP-gas fuel containers installed on a passenger-carrying vehicle must not exceed
_________ gallons total water capacity. -ANSWER ✔✔200
Containers that show excessive denting, bulging, gouging, or corrosion must be
removed from service. True or False? -ANSWER ✔✔True
Engine fuel containers of steel must have what in order to minimize corrosion? But
stainless steel cylinders are not required this? -ANSWER ✔✔Painted or powder-
coated
ASME containers fabricated after January 1, 1984, for use as engine fuel
containers on vehicles must be equipped or fitted with what -ANSWER
✔✔overfilling prevention device
Where a overfilling prevention device is installed on the ASME container or
exterior of the compartment and remote filling is used, a what must be installed in
the container fill valve opening -ANSWER ✔✔Double backflow check valve
What must be readily accessible on a container without using tools, or other
equipment must be provided to shut off the container -ANSWER ✔✔main shutoff
valves
ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT RATED A+
||UPDATED 2026/2027
Container
-ANSWER ✔✔ Any vessel, including cylinders, tanks, portable tanks, and cargo
tanks used for the transporting or storage of LP-gases.
Container Appurtenances
-ANSWER ✔✔ Devices installed in container openings for safety, control, or
operating purposes, including pressure-relief valves, shutoff valves, backflow
check valves, excess-flow valves, internal valves, liquid level gauges, pressure
gauges, and plugs.
Fixed Maximum Liquid Level Gauge
-ANSWER ✔✔ A fixed liquid level gauge (such as an outage gauge, spitter valve,
or spew gauge) that indicates when the liquid level in a container has reached its
maximum permitted filling limit.
Maximum Allowable Working Pressure (MAWP) -ANSWER ✔✔The maximum
pressure at which a pressure vessel is to operate as described by the ASME boiler
and Pressure Vessel code.
Point of Transfer -ANSWER ✔✔The location where connections and
disconnections are made or where LP-gas is vented to the atmosphere in the course
of transfer operations.
Pressure Relief Device -ANSWER ✔✔[popoff valve] designed to open to prevent
a rise of internal pressure in excess of a specified value due to emergency or
abnormal conditions.
Source of Ignition -ANSWER ✔✔Devices or equipment that, because of their
modes of use or operation, are capable of providing sufficient thermal energy to
ignite flammable LP-gas vapor-air mixtures when introduced into such a mixture
or when such a mixture comes into contact with them, and that will permit
propagation of flame away from the..
, Mobile Fuel Container -ANSWER ✔✔An LP-gas container mounted on a vehicle
to store LP-gas as the fuel supply to an auxiliary engine other than the engine to
propel the vehicle or for other uses on the vehicle.
Motor Fuel Container -ANSWER ✔✔[engine fuel container] An LP-gas container
mounted on a vehicle to store LP-gas as the fuel supply to an engine used to propel
the vehicle.
Containers shall be _______ , ________ , _________ , and __________ in
accordance with the regulations of the U.S Department of Transportation. -
ANSWER ✔✔Designed, fabricated, tested, and Marked
ASME LP-gas engine fuel and mobile containers must be designed to provide at
least the following maximum allowable working pressure. -ANSWER ✔✔250psi
if constructed prior to April 1, 2001 or 312psi on or after April 1, 2001.
LP-gas fuel containers installed on a passenger-carrying vehicle must not exceed
_________ gallons total water capacity. -ANSWER ✔✔200
Containers that show excessive denting, bulging, gouging, or corrosion must be
removed from service. True or False? -ANSWER ✔✔True
Engine fuel containers of steel must have what in order to minimize corrosion? But
stainless steel cylinders are not required this? -ANSWER ✔✔Painted or powder-
coated
ASME containers fabricated after January 1, 1984, for use as engine fuel
containers on vehicles must be equipped or fitted with what -ANSWER
✔✔overfilling prevention device
Where a overfilling prevention device is installed on the ASME container or
exterior of the compartment and remote filling is used, a what must be installed in
the container fill valve opening -ANSWER ✔✔Double backflow check valve
What must be readily accessible on a container without using tools, or other
equipment must be provided to shut off the container -ANSWER ✔✔main shutoff
valves
