Rail Road Commission (RRC)
Rail Road Commission (RRC) Texas LP-
Gas Examination Study Guide 2025
Railroad Commission of Texas
LP-Gas Safety Rules
1. The commission does not adopt language in any NFPA rule, chart, figure or table
pertaining to any LP-Gas container having a water capacity of _____________ gallon
(______pounds LP-gas capacity) or less. -Correct Answer ✔1. The commission does not
adopt language in any NFPA rule, chart, figure or table pertaining to any LP-Gas
container having a water capacity of _____________gallon (______pounds LP-gas
capacity) or less.
of ____one___gallon (4.2 pounds LP-gas capacity) or less.
2 PSI Regulator System: An ____________ ___________ ______ ____________ that
combines a ______ stage regulator, a ___ PSI service regulator and a _______ pressure
regulator. -Correct Answer ✔2 PSI Regulator System: An _LP-GAS_ _vapor_ _delivery_
_system_ that combines a _first_ stage regulator, a _2_ PSI service regulator and a _line_
pressure regulator.
2 PSI Service Regulator: A ________ regulator for LP-Gas vapor service designed to
reduce first-stage regulator outlet pressure to a nominal ___ psig. -Correct Answer ✔2
PSI Service Regulator: A ___pressure_____ regulator for LP-Gas vapor service designed
to reduce first-stage regulator outlet pressure to a nominal __2__ psig.
Container: Any vessel, including _______, __________, ______ ______, and ______
_______, used for the transporting, or storing of LP-Gases. -Correct Answer ✔Container:
Rail Road Commission (RRC)
,Rail Road Commission (RRC)
Any vessel, including __cylinders_____, ___tanks_______, _portable_____ __tanks____,
and ___cargo___ ___tanks____, used for the transporting, or storing of LP-Gases.
What are container appurtenances? -Correct Answer ✔Container Appurtenances:
Devices installed in container openings for safety, control, or operating purposes.
(Examples include pressure-relief devices; shutoff valves, backflow check valves, excess-
flow valves and internal valves; liquid level gauges; pressure gauges; and plugs).
Who is responsible for Alternative Fuel Safety (AFS)? -Correct Answer ✔The RRC
(Railroad Commission) Department is responsible for LP-Gas training and inspection.
LP Gas Safety Rules: The rules adopted by the RRC in the Texas Administrative Code, Title
___, Part ___, Chapter ___ including any ____ or other documents adopted by
reference. -Correct Answer ✔LP Gas Safety Rules: The rules adopted by the RRC in the
Texas Administrative Code, Title _16__, Part __1_, Chapter _9__ including any ____ or
other documents adopted by reference.
Rules Examination: The commission's _____ examination that measures an examinee's
working knowledge of Chapter ______ of the _____ ______ _______ ____ and/or the
current _____ _____ rules. -Correct Answer ✔Rules Examination: The commission's
__written___ examination that measures an examinee's working knowledge of Chapter
___113___ of the __Texas___ __Natural____ ___Resources____ __Code__ and/or the
current ___LP__ _Gas____ rules.
What is the ASME? -Correct Answer ✔ASME stands for the American Society of
Mechanical Engineers
What does DOT stand for? -Correct Answer ✔The U.S. Department of Transportation
Rail Road Commission (RRC)
, Rail Road Commission (RRC)
Define Excessive-Flow Valve (or Excess-Flow Check Valve -Correct Answer ✔A valve
designed to close when the liquid or vapor passing through it exceeds a prescribed "t"
ow rate.
Fixed gauge level.
What is a Fixed Maximum Liquid Level Gauge also known as? (list 4) -Correct Answer
✔Bleeder Valve
Outage Gauge
Spitter Valve
Spew Gauge
What is a fixed maximum liquid level gauge? (definition according to study guide) -
Correct Answer ✔A fixed liquid level gauge that indicates the liquid level at which the
container is filled to its maximum permitted filling limit.
First stage regulator: A _______ regulator for LP-Gas ________ _________ designed to
____________ ___________ from the container to ____ psig or ________. -Correct
Answer ✔First stage regulator: A ___pressure____ regulator for LP-Gas __vapr______
___service______ designed to __reduce____ ____pressure___ from the container to
__10__ psig or ___less_____.
Flexible Connector: A ________ (not exceeding _____ _____ overall length) ______
piping system component that is ______ from ______ material and _______ with
________ at _________ ends. -Correct Answer ✔Flexible Connector: A ____short____
(not exceeding _60____ __inches___ overall length) __fixed____ piping system
component that is ___fabricated___ from __flexible____ material and _equipped______
with __connections______ at ___both______ ends.
Flexible Hose Connector: a component _________ from LP-Gas ________ that is made
from ______ that is _______ with LP-Gas. -Correct Answer ✔Flexible Hose Connector: a
Rail Road Commission (RRC)
Rail Road Commission (RRC) Texas LP-
Gas Examination Study Guide 2025
Railroad Commission of Texas
LP-Gas Safety Rules
1. The commission does not adopt language in any NFPA rule, chart, figure or table
pertaining to any LP-Gas container having a water capacity of _____________ gallon
(______pounds LP-gas capacity) or less. -Correct Answer ✔1. The commission does not
adopt language in any NFPA rule, chart, figure or table pertaining to any LP-Gas
container having a water capacity of _____________gallon (______pounds LP-gas
capacity) or less.
of ____one___gallon (4.2 pounds LP-gas capacity) or less.
2 PSI Regulator System: An ____________ ___________ ______ ____________ that
combines a ______ stage regulator, a ___ PSI service regulator and a _______ pressure
regulator. -Correct Answer ✔2 PSI Regulator System: An _LP-GAS_ _vapor_ _delivery_
_system_ that combines a _first_ stage regulator, a _2_ PSI service regulator and a _line_
pressure regulator.
2 PSI Service Regulator: A ________ regulator for LP-Gas vapor service designed to
reduce first-stage regulator outlet pressure to a nominal ___ psig. -Correct Answer ✔2
PSI Service Regulator: A ___pressure_____ regulator for LP-Gas vapor service designed
to reduce first-stage regulator outlet pressure to a nominal __2__ psig.
Container: Any vessel, including _______, __________, ______ ______, and ______
_______, used for the transporting, or storing of LP-Gases. -Correct Answer ✔Container:
Rail Road Commission (RRC)
,Rail Road Commission (RRC)
Any vessel, including __cylinders_____, ___tanks_______, _portable_____ __tanks____,
and ___cargo___ ___tanks____, used for the transporting, or storing of LP-Gases.
What are container appurtenances? -Correct Answer ✔Container Appurtenances:
Devices installed in container openings for safety, control, or operating purposes.
(Examples include pressure-relief devices; shutoff valves, backflow check valves, excess-
flow valves and internal valves; liquid level gauges; pressure gauges; and plugs).
Who is responsible for Alternative Fuel Safety (AFS)? -Correct Answer ✔The RRC
(Railroad Commission) Department is responsible for LP-Gas training and inspection.
LP Gas Safety Rules: The rules adopted by the RRC in the Texas Administrative Code, Title
___, Part ___, Chapter ___ including any ____ or other documents adopted by
reference. -Correct Answer ✔LP Gas Safety Rules: The rules adopted by the RRC in the
Texas Administrative Code, Title _16__, Part __1_, Chapter _9__ including any ____ or
other documents adopted by reference.
Rules Examination: The commission's _____ examination that measures an examinee's
working knowledge of Chapter ______ of the _____ ______ _______ ____ and/or the
current _____ _____ rules. -Correct Answer ✔Rules Examination: The commission's
__written___ examination that measures an examinee's working knowledge of Chapter
___113___ of the __Texas___ __Natural____ ___Resources____ __Code__ and/or the
current ___LP__ _Gas____ rules.
What is the ASME? -Correct Answer ✔ASME stands for the American Society of
Mechanical Engineers
What does DOT stand for? -Correct Answer ✔The U.S. Department of Transportation
Rail Road Commission (RRC)
, Rail Road Commission (RRC)
Define Excessive-Flow Valve (or Excess-Flow Check Valve -Correct Answer ✔A valve
designed to close when the liquid or vapor passing through it exceeds a prescribed "t"
ow rate.
Fixed gauge level.
What is a Fixed Maximum Liquid Level Gauge also known as? (list 4) -Correct Answer
✔Bleeder Valve
Outage Gauge
Spitter Valve
Spew Gauge
What is a fixed maximum liquid level gauge? (definition according to study guide) -
Correct Answer ✔A fixed liquid level gauge that indicates the liquid level at which the
container is filled to its maximum permitted filling limit.
First stage regulator: A _______ regulator for LP-Gas ________ _________ designed to
____________ ___________ from the container to ____ psig or ________. -Correct
Answer ✔First stage regulator: A ___pressure____ regulator for LP-Gas __vapr______
___service______ designed to __reduce____ ____pressure___ from the container to
__10__ psig or ___less_____.
Flexible Connector: A ________ (not exceeding _____ _____ overall length) ______
piping system component that is ______ from ______ material and _______ with
________ at _________ ends. -Correct Answer ✔Flexible Connector: A ____short____
(not exceeding _60____ __inches___ overall length) __fixed____ piping system
component that is ___fabricated___ from __flexible____ material and _equipped______
with __connections______ at ___both______ ends.
Flexible Hose Connector: a component _________ from LP-Gas ________ that is made
from ______ that is _______ with LP-Gas. -Correct Answer ✔Flexible Hose Connector: a
Rail Road Commission (RRC)
