| (a) All appurtenances and equipment placed into LP-gas
service shall be listed by a nationally recognized testing laboratory
such as Underwriters Laboratory (UL), Factory Mutual (FM), or American
Gas Association (AGA) unless:
(1) it is specifically prohibited for use by another
section of the rules in this chapter;
(2) there is no test specification or procedure developed
by the testing laboratory for the appurtenance or equipment; or
(3) it is used and in compliance with any NFPA standard
adopted by the Commission.
(b) Appurtenances and equipment that cannot be listed
but are not prohibited for use by the rules in this chapter or the
manufacturer's instructions shall be acceptable for LP-gas service,
provided the appurtenances and equipment are installed in compliance
with the applicable rules in this chapter.
(c) The licensee or operator of the appurtenances or
the equipment shall maintain documentation sufficient to substantiate
any claims regarding the safety of any valves, fittings, and equipment
and shall, upon request, furnish copies to AFS.
(d) ASME containers with an individual water capacity
over 4,000 gallons shall comply with paragraph (1) or (2) of this
subsection:
(1) For container openings 1 1/4-inch or greater in
size:
(A) the container shall be equipped with:
(i) a pneumatically-actuated or electrically-actuated
internal valve equipped for remote closure and automatic shutoff using
thermal (fire) actuation where the thermal element is located within
five feet (1.5 meters) of the internal valve;
(ii) a double back flow check filler valve; or
(iii) a positive shutoff valve in combination with
a back flow check valve;
(B) Any vapor or liquid withdrawal opening 1 1/4-inch
or larger with piping attached that exclusively provides service to
stationary appliances or equipment and which is not part of a transfer
system may be equipped with an excess flow valve and a shutoff valve
installed as close as practical to the container in lieu of an internal
valve or emergency shutoff valve;
(C) For reducing the size of a container opening, only
one bushing with a minimum pressure rating in accordance with NFPA
58 Table 5.11.4.2 shall be installed;
(D) Container openings that are not compatible with
internal valves shall be permitted to utilize both an excess-flow
valve installed in the container and an emergency shutoff valve or
a valve complying with API 607, Fire Test Soft-Seated for Quarter
Turn Ball Valves Equipped with Non-Metallic Seats, which shall be
pneumatically actuated and shall fail in the closed position.
(2) For container openings less than 1 1/4-inch in
size, the container shall be equipped with:
(A) a positive shutoff valve that is located as close
to the container as practical in combination with either an excess-flow
valve or a back flow check valve installed in the container;
(B) a pneumatically-actuated or electrically-actuated
internal valve with an integral excess-flow valve or excess-flow protection;
or
(C) a double back flow check filler valve.
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| Source Note: The provisions of this §9.126 adopted to be effective February 1, 2001, 26 TexReg 947; amended to be effective September 1, 2005, 30 TexReg 4810; amended to be effective December 24, 2012, 37 TexReg 9913; amended to be effective January 6, 2020, 45 TexReg 127; amended to be effective July 18, 2022, 47 TexReg 4119 |
