Current through September 24, 2024
(1) Tanks qualify
under basic rules and shall not exceed 1,200 gallons water capacity.
(2) Tanks shall be fastened to trailers as
follows:
(a) Tanks shall be provided with
substantial cradles, welded to the tanks. The cradles shall be situated
directly over front and rear axles and bolted thereto.
(b) On trailers of the bed type, cross
members made of channel iron or equivalent thereof, shall be placed directly
across the bed and bolted to the two side members of the trailer frame, and the
tank cradles bolted rigidly thereto.
(c) Tanks in use prior to the effective date
of these rules and regulations, not provided with cradles shall have welded
thereto, cradles or substantial lugs which shall be bolted to the trailer frame
or axle in order to prevent rotating, backward or forward motion.
(d) The only two wheel type trailer that will
be permissible shall be the one of the heavy cane field type or equivalent
thereof, and any container installed on such a trailer shall have its centroid
located 6" forward from the centroid of the trailer proper. This is to allow
the trailer to tilt forwards instead of backwards in the event that the
connection between the trailer and the motor vehicle should break. Installation
shall be the same as in paragraph (2) of this Section.
(3) All trailers shall be firmly and securely
attached to the vehicle drawing them by means of draw-bars, supplemented by
safety chains.
(4) Fittings
qualified under basis rules and fittings shall be protected from mechanical
injury in case of over turning by means of a metal box or cylinder with open
top welded to container over the fittings or by means of rigid guards,
well-braced, welded on both sides of fittings, or by means of a metal dome. The
thickness of said metal box, cylinder, guard, or dome shall be at least equal
to that of the container to which it is being welded, and the height at least
equal to that of the fittings. If a metal dome is used the relief valve shall
be properly vented through the dome.
(a) If
liquid withdrawal line is installed at bottom of container, the connections
thereto, including hose, shall not extend downward lower than the lowest
horizontal edge of the trailer axle. Provisions shall be made whereby the hose
shall be fastened to the trailer while in transit.
(5) Valve requirement:
(a) Tanks shall have excess flow valves in
liquid withdrawal line and shall have positive shut-off valve attached to the
excess flow valve, and if hose is used, it shall have a relief valve direct to
liquid section of hose to prevent excessive pressures.
(6) Trailers shall be equipped with proper
devices to drain off such static charges as may be generated.
(7) Filling of container:
(a) To assist in filling a container, a line
may be attached to the vapor return valve of the container, but it will not be
permissible to "bleed" a trailer tank to the open air to assist in filling,
except in field filling - 100' from public highways or adjacent
properties.
Authority: T.C.A. §43-1302.
