|(a) Containers shall be designed, tested, and marked
or stamped in accordance with DOT Specification 4L or ASME Code, "Rules
for the Construction of Pressure Vessels," Section VIII, Division
1, applicable on the date of manufacture.
(b) The owner of a container shall be responsible for
its suitability for continued service.
(c) Repair or alteration of containers shall comply
with the Code under which that container was fabricated. Licensees
making repairs or alterations shall file LNG Form 2008 with LP-Gas
(d) Containers shall be equipped with a dip tube or
other device so that the maximum filling volume of the container complies
with §14.2107 of this title (relating to Stationary LNG Storage
(e) Containers shall be constructed so that the unrelieved
pressure inside the container shall not exceed the maximum allowable
working pressure of the container within a 72-hour period at an ambient
temperature of 70 degrees Fahrenheit after the container has been
filled with LNG stabilized at the maximum allowable working pressure
and temperature equilibrium has been established.
(f) Connections for pressure relief valves shall be
located and installed to communicate directly with the vapor space.
(g) Containers shall have permanent identification
markings, decals, or stencils to identify:
(1) the total volumetric capacity of the container
(2) the words, "FOR LNG ONLY," in capital letters at
least one inch high in a location that is visible after installation;
(3) all inlets and outlets, except relief valves and
gauging devices, designating whether they communicate with vapor or
(h) Container appurtenances shall be fabricated of
materials suitable for LNG service. Pressure containing metal parts
of appurtenances, except fusible elements, shall have a minimum melting
point of +1,500 degrees Fahrenheit. Container appurtenances shall
have a rated maximum allowable working pressure not less than the
maximum allowable working pressure of the container.
(i) Containers shall be equipped with the pressure
relief devices and pressure control valves required by the code or
regulations under which the containers were designed. The pressure
relief devices and pressure control valves shall communicate directly
with the vapor space of the container, and shall be designed to minimize
the possibility of tampering. Externally set or adjusted valves shall
be provided with a means of sealing the adjustment.
(j) Valves shall be readily accessible and operable
without the use of tools. A shutoff valve shall be installed directly
on the container vapor outlet with no intervening fitting other than
pressure relief devices and shall be marked with the words, "VAPOR
SHUTOFF VALVE." Another shutoff valve shall be installed directly
on the container liquid outlet and shall be marked with the words,
"LIQUID SHUTOFF VALVE." The markings shall be in capital letters.
Decals or stencils are acceptable. Normally closed automatic shutoff
valves that are held open by electric current or manually operated
shutoff valves may be used.