CAT E LP GAS SAFETY RULES Exam
Questions and Verified Answers Latest
Versions 2025 Graded A+
Certified - ANSWER Authorized to perform LP-gas work as set forth in the
Texas Natural Resource Code. Employee certification alone does not allow an
individual to perform those activities which require licensing.LP-Gas Safety
Rules, §9.2(8)
Advanced field training (AFT) - ANSWER The final portion of the training or
continuing education requirements in which an individual shall successfully
perform the specified LP-gas activities in order to demonstrate proficiency in
those activities.LP-Gas Safety Rules, §9.2(2)
Company Representative. - ANSWER The individual designated to the
Commission by a license applicant or a licensee as the principal individual in
authority and, in the case of a licensee other than a Category P licensee, actively
supervising the conduct of the licensee's LP-gas activities.LP-Gas Safety Rules,
§9.2(12)
Leak Grades 1 - ANSWER leak that represents an existing or probable hazard
to persons or property and requires immediate repair or continuous action until
the conditions are no longer hazardous; or
Leak Grade 2 - ANSWER leak that is recognized as being nonhazardous at the
time of detection, but requires a scheduled repair based on a probable future
hazard.LP-Gas Safety Rules, §9.2(19)
Licensed - ANSWER Authorized by the Commission to perform LP-gas
activities through the issuance of a valid license.LP-Gas Safety Rules, §9.2(20)
,Licensee - ANSWER A person which has applied for and been granted an LP-
gas license be the Commission, or who holds a master or journeyman plumber
license from the Texas Board of Plumbing Examiners or a Class A or B Air
Conditioning and Refrigeration Contractors License from the Texas Department
of Licensing and Regulation and has properly registered with the
Commission.LP-Gas Safety Rules, §9.2(21)
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.LP-Gas Safety Rules,
§9.2(25)
Mobile fuel system - ANSWER . An LP-gas system, excluding the container,
to supply LP-gas as a fuel to an auxiliary engine other than the engine to propel
the vehicle or for other uses on the vehicle.LP-Gas Safety Rules, §9.2(26)
Motor fuel container . - ANSWER An LP-gas container mounted on a vehicle
to store LP-gas as the fuel supply to an engine used to propel the vehicle.LP-
Gas Safety Rules, §9.2(27)
Operations Supervisor. - ANSWER The individual who is certified by the
Commission to actively supervise a licensee's LP-gas operations and is
authorized by the licensee to implement operational changes.LP-Gas Safety
Rules, §9.2(31)
Outlet - ANSWER A site operated by an LP-gas licensee from which any
regulated LP-gas activity is performed.LP-Gas Safety Rules, §9.2(32)
Portable cylinder. - ANSWER A receptacle constructed to DOT specifications,
designed to be moved readily, and used for the storage of LP-gas for connection
to an appliance or an LP-gas system. The term does not include a cylinder
designed for use on a forklift or similar equipment.LP-Gas Safety Rules,
§9.2(35)
Rules examination. - ANSWER 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 rules of this chapter.LP-Gas Safety
Rules, §9.2(41)
Trainee. - ANSWER An individual who has not yet taken and passed an
employee-level rules examination.LP-Gas Safety Rules, §9.2(49)
NFPA 54 (2018) - ANSWER
Listed. - ANSWER Equipment, materials, or services included in a list
published by an organization that is acceptable to the authority having
jurisdiction and concerned with evaluation of products or services, that
maintains periodic inspection of production of listed equipment or materials or
periodic evaluation of services, and whose listing states that either the
equipment, material, or service meets appropriate designated standards or has
been tested and found suitable for a specified purpose.NFPA 54, §3.2.5
Direct Vent Appliances. - ANSWER Appliances that are constructed and
installed so that all air for combustion is derived directly from the outdoors and
all flue gases are discharged to the outdoors.NFPA 54, §3.3.5.3
Clothes Dryer. - ANSWER An appliance used to dry wet laundry by means of
heat.
Type 1 Clothes Dryer. - ANSWER Primarily used in family living
environment. May or may not be coin-operated for
Type 2 Clothes Dryer. - ANSWER Used in business with direct intercourse of
the function with the public. May or may not be operated by public or hired
attendant. May or may not be coin-operatedNFPA 54, §3.3.19
Gas Vent. - ANSWER A passageway composed of listed factory-built
components assembled in accordance with the manufacturer's installation
instructions for conveying vent gases from appliances or their vent connectors
to the outdoors.NFPA 54, §3.3.53
Gas Appliance Pressure Regulator. - ANSWER A pressure regulator for
controlling pressure to the appliance manifold.NFPA 54, §3.3.84.2
, Line Pressure Regulator. - ANSWER A pressure regulator placed in a gas line
between the service regulator and the appliance regulator.NFPA 54, §3.3.84.3
Piping system. - ANSWER All piping, valves, and fittings from the outlet of
the point of delivery from the supplier to the outlets of the equipment shutoff
valves.NFPA 54, §3.3.98.6
NFPA 58 (2017) - ANSWER
ASME. - ANSWER American Society of Mechanical Engineers.NFPA 58,
§3.3.6
Container. - ANSWER Any vessel, including cylinders, tanks, portable tanks,
and cargo tanks, used to transport or store LP-gases.NFPA 58, §3.3.14
Container appurtenances. - ANSWER Devices installed in container openings
for safety, control, or operating purposes.NFPA 58, §3.3.15
Universal Cylinder. - ANSWER A cylinder that can be connected for service
in either the vertical or the horizontal position so that the fixed maximum liquid
level gauge, pressure relief device, and filling and withdrawal appurtenances
function properly in either position.NFPA 58, §3.3.17.1
Volumetric Method Filling. - ANSWER Filling a container to not more than
the maximum permitted liquid volume.NFPA 58, §3.3.26.1
Weight Method Filling. - ANSWER Filling containers to not more than the
maximum permitted filling limit by weighing the LP-Gas in the
container.NFPA 58, §3.3.26.2
Leak check. - ANSWER An operation performed on a complete gas piping
system to verify that the system does not leak.NFPA 58, §3.3.42
Liquefied Petroleum Gas (LP-Gas). - ANSWER 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 58, §3.3.43
Questions and Verified Answers Latest
Versions 2025 Graded A+
Certified - ANSWER Authorized to perform LP-gas work as set forth in the
Texas Natural Resource Code. Employee certification alone does not allow an
individual to perform those activities which require licensing.LP-Gas Safety
Rules, §9.2(8)
Advanced field training (AFT) - ANSWER The final portion of the training or
continuing education requirements in which an individual shall successfully
perform the specified LP-gas activities in order to demonstrate proficiency in
those activities.LP-Gas Safety Rules, §9.2(2)
Company Representative. - ANSWER The individual designated to the
Commission by a license applicant or a licensee as the principal individual in
authority and, in the case of a licensee other than a Category P licensee, actively
supervising the conduct of the licensee's LP-gas activities.LP-Gas Safety Rules,
§9.2(12)
Leak Grades 1 - ANSWER leak that represents an existing or probable hazard
to persons or property and requires immediate repair or continuous action until
the conditions are no longer hazardous; or
Leak Grade 2 - ANSWER leak that is recognized as being nonhazardous at the
time of detection, but requires a scheduled repair based on a probable future
hazard.LP-Gas Safety Rules, §9.2(19)
Licensed - ANSWER Authorized by the Commission to perform LP-gas
activities through the issuance of a valid license.LP-Gas Safety Rules, §9.2(20)
,Licensee - ANSWER A person which has applied for and been granted an LP-
gas license be the Commission, or who holds a master or journeyman plumber
license from the Texas Board of Plumbing Examiners or a Class A or B Air
Conditioning and Refrigeration Contractors License from the Texas Department
of Licensing and Regulation and has properly registered with the
Commission.LP-Gas Safety Rules, §9.2(21)
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.LP-Gas Safety Rules,
§9.2(25)
Mobile fuel system - ANSWER . An LP-gas system, excluding the container,
to supply LP-gas as a fuel to an auxiliary engine other than the engine to propel
the vehicle or for other uses on the vehicle.LP-Gas Safety Rules, §9.2(26)
Motor fuel container . - ANSWER An LP-gas container mounted on a vehicle
to store LP-gas as the fuel supply to an engine used to propel the vehicle.LP-
Gas Safety Rules, §9.2(27)
Operations Supervisor. - ANSWER The individual who is certified by the
Commission to actively supervise a licensee's LP-gas operations and is
authorized by the licensee to implement operational changes.LP-Gas Safety
Rules, §9.2(31)
Outlet - ANSWER A site operated by an LP-gas licensee from which any
regulated LP-gas activity is performed.LP-Gas Safety Rules, §9.2(32)
Portable cylinder. - ANSWER A receptacle constructed to DOT specifications,
designed to be moved readily, and used for the storage of LP-gas for connection
to an appliance or an LP-gas system. The term does not include a cylinder
designed for use on a forklift or similar equipment.LP-Gas Safety Rules,
§9.2(35)
Rules examination. - ANSWER 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 rules of this chapter.LP-Gas Safety
Rules, §9.2(41)
Trainee. - ANSWER An individual who has not yet taken and passed an
employee-level rules examination.LP-Gas Safety Rules, §9.2(49)
NFPA 54 (2018) - ANSWER
Listed. - ANSWER Equipment, materials, or services included in a list
published by an organization that is acceptable to the authority having
jurisdiction and concerned with evaluation of products or services, that
maintains periodic inspection of production of listed equipment or materials or
periodic evaluation of services, and whose listing states that either the
equipment, material, or service meets appropriate designated standards or has
been tested and found suitable for a specified purpose.NFPA 54, §3.2.5
Direct Vent Appliances. - ANSWER Appliances that are constructed and
installed so that all air for combustion is derived directly from the outdoors and
all flue gases are discharged to the outdoors.NFPA 54, §3.3.5.3
Clothes Dryer. - ANSWER An appliance used to dry wet laundry by means of
heat.
Type 1 Clothes Dryer. - ANSWER Primarily used in family living
environment. May or may not be coin-operated for
Type 2 Clothes Dryer. - ANSWER Used in business with direct intercourse of
the function with the public. May or may not be operated by public or hired
attendant. May or may not be coin-operatedNFPA 54, §3.3.19
Gas Vent. - ANSWER A passageway composed of listed factory-built
components assembled in accordance with the manufacturer's installation
instructions for conveying vent gases from appliances or their vent connectors
to the outdoors.NFPA 54, §3.3.53
Gas Appliance Pressure Regulator. - ANSWER A pressure regulator for
controlling pressure to the appliance manifold.NFPA 54, §3.3.84.2
, Line Pressure Regulator. - ANSWER A pressure regulator placed in a gas line
between the service regulator and the appliance regulator.NFPA 54, §3.3.84.3
Piping system. - ANSWER All piping, valves, and fittings from the outlet of
the point of delivery from the supplier to the outlets of the equipment shutoff
valves.NFPA 54, §3.3.98.6
NFPA 58 (2017) - ANSWER
ASME. - ANSWER American Society of Mechanical Engineers.NFPA 58,
§3.3.6
Container. - ANSWER Any vessel, including cylinders, tanks, portable tanks,
and cargo tanks, used to transport or store LP-gases.NFPA 58, §3.3.14
Container appurtenances. - ANSWER Devices installed in container openings
for safety, control, or operating purposes.NFPA 58, §3.3.15
Universal Cylinder. - ANSWER A cylinder that can be connected for service
in either the vertical or the horizontal position so that the fixed maximum liquid
level gauge, pressure relief device, and filling and withdrawal appurtenances
function properly in either position.NFPA 58, §3.3.17.1
Volumetric Method Filling. - ANSWER Filling a container to not more than
the maximum permitted liquid volume.NFPA 58, §3.3.26.1
Weight Method Filling. - ANSWER Filling containers to not more than the
maximum permitted filling limit by weighing the LP-Gas in the
container.NFPA 58, §3.3.26.2
Leak check. - ANSWER An operation performed on a complete gas piping
system to verify that the system does not leak.NFPA 58, §3.3.42
Liquefied Petroleum Gas (LP-Gas). - ANSWER 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 58, §3.3.43
