|(a) Compliance with this section does not ensure conformity
with other state and federal regulations, such as those of the Texas
Commission on Environmental Quality or the United States Environmental
Protection Agency. Retail LNG dispensers shall comply with the applicable
weights and measures requirements of the Texas Department of Agriculture
relating to dispensing accuracy.
(b) Appurtenances and equipment placed into LNG service
shall be listed by a Category 15, 20, or 50 licensee unless:
(1) the appurtenances or equipment are specifically
prohibited for use by another section of the rules in this chapter;
(2) there is no test specification or procedure developed
by a testing laboratory for the appurtenances or equipment.
(c) Appurtenances and equipment that are labeled but
not listed and are not prohibited for use by the rules in this chapter
shall be acceptable and safe for LNG service over the full range of
pressures and temperatures to which they will be subjected under normal
(d) LP-Gas Operations may require any documentation
sufficient to substantiate any claims made regarding the safety of
any valves, fittings, and equipment.
(e) Drive-away protection shall be provided.
(f) Emergency shut-down devices shall be distinctly
marked for easy recognition according to the requirements of Table
1 of §14.2101 of this title (relating to Uniform Protection Requirements)
and shall activate a valve installed at the dispensing area that shuts
off the power and gas supply to the dispensers. ESD devices shall
be located as follows:
(1) For containers with water capacity of 93,240 gallons
or less, an ESD device shall be located between 35 and 50 feet from
(2) For containers with water capacity of 93,241 gallons
or more, an ESD device shall be located between 60 and 75 feet from
(g) Manually operated container valves shall be provided
for each container.
(h) Manually operated shutoff valves shall be installed
in manifolds as close as practicable to a container or group of containers.
(i) The use of hoses or arms in a fueling installation
is limited to:
(1) a vehicle fueling hose;
(2) an inlet connection to compression equipment; or
(3) a section of metallic hose not exceeding 36 inches
in length in a pipeline to provide flexibility where necessary. Metallic
hose shall be installed so that it will be protected against damage
and be readily visible for inspection. The manufacturer's identification
shall be retained for each section of metallic hose used.
(j) When a hose or arm of nominal three-inch diameter
or larger is used for liquid transfer, or nominal four-inch diameter
or larger is used for vapor transfer, an emergency shutoff valve shall
be installed in the piping of the transfer system less than ten feet
from the nearest end of the hose or arm. If the flow is away from
the hose, a check valve may be used as the shutoff valve. If a liquid
or vapor line has two or more legs, an emergency shutoff valve shall
be installed in each leg.
(k) The fill line on storage containers shall be equipped
with a backflow check valve to prevent discharge of LNG from the container
in case of line, hose, or fitting rupture.
(l) A fueling connection and mating vehicle receptacle
shall be used to transfer LNG or gas vapor to or from the vehicle.
(m) An interlock device shall be provided so that the
hose coupling cannot be released while the transfer line is open.
Interlock devices are not required for transports when transferring
fuel to a stationary tank.
(n) The maximum delivery pressure shall not exceed
the maximum allowable working pressure of the vehicle and fuel tanks.
(o) Where excess flow check valves are used, the closing
flow shall be less than the flow rating of the piping system that
would result from a pipeline rupture between the excess flow valve
and the equipment downstream of the excess flow check valve.