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provided with a fusible section which will cause the valve to close automatically in case of fire.
(3) There should be provided between each shut-off valve seat and discharge faucet a shear section which will break under strain, unless the discharge piping is so arranged as to afford the same protection, and leave the shut-off valve seat intact in case of accident to the discharge faucet.
(m) Grounding. Tank, chassis, axles, and springs of every tank vehicle shall be metallically interconnected. Each tank vehicle shall be equipped with drag chain or other flexible metallic device, which is long enough to reach the ground, for grounding such static charges as may be present. Spare links for drag chains shall be carried in the tool box of the vehicle, and the driver must keep the chain or other such device in working order.
(n) Filling pipe and tank of vehicle metallically connected. During the filling operation, metallic contact shall be maintained between the storage fill pipe and the tank vehicle.
(0) Can and bucket boxes. The can and bucket boxes on tank vehicles shall be so constructed or so lined as to prevent sparking.
(p) Exhaust system. Exhaust system, including muffler and exhaust, line, shall have ample clearance from the fuel system and combustible materials, and shall be protected from any grease, oil, or motor fuel. The exhaust system, including all units, shall be constructed and installed in a safe and workmanlike manner.
(q) Electrical system. Tank vehicles shall not be equipped with any artificial light other than electricity. Lighting circuits shall have adequate over-current protection (fuses or automatic circuit breakers); and the wiring shall have adequate carrying capacity and mechanical strength, and shall be suitably secured, insulated, and protected against physical damage.*+ [Pars. T84-T100]
85.75 Fuel system for tank trucks and tank semitrailers carrying inflammable liquids-(a) Fuel tanks. The main fuel tank shall not be placed above or adjacent to the engine. It shall be constructed and mounted in such manner as to present no unusual hazard. Fuel tanks shall be vented during filling operations, and so located that they may be drained without removal from the mountings.
(b) Fuel feed system. Fuel feed system shall be so constructed and located as to minimize the fire hazard. When necessary, a pressure-release device shall be provided.
(c) Fuel line. The fuel line shall be of proper material, and have all connections made with suitable fittings. The fuel line shall be equipped with shut-off valve, and shall be supported so as to prevent chafing and vibration.
(d) Carburetor. The carburetor shall be so constructed and installed that any fire hazard involved in its use shall be reduced to a minimum. Direct drainage to the ground of overflow fuel shall be provided for.
(e) Installation. All parts of the fuel-feed system shall be constructed and installed in a safe and workmanlike manner.** [Pars. T101-T105]
**For statutory and source citations, see note to § 85.1.
85.76 Trailer and semitrailer tanks for inflammable liquids. (a) Every tank trailer and tank semitrailer shall be equipped with a reliable system of air brakes, and adequate provision shall be made for their efficient operation from the driver's seat of the motor vehicle.
(b) Each trailer shall be firmly and securely attached to the vehicle drawing it by means of suitable drawbar, supplemented by safety chains.
(c) Every tank trailer and tank semitrailer shall be provided with side lights in addition to other lights as prescribed herein.
(d) Four-wheeled trailers shall be of the fifth-wheel or equivalent type of construction, which will prevent dangerous or unreasonable whipping or swerving of the towed vehicle from side to side, and cause it to follow substantially in the path of the motor vehicle.** [Par. T106]
85.77 Marking on tank vehicles for inflammable liquids. Every tank truck, tank trailer, and tank semitrailer containing any shipment of inflammable liquid shall be conspicuously placarded on the front end of the truck, on both sides of every vehicle, and on the rear of the rear vehicle with the standard "Inflammable" placard, or be conspicuously and legibly marked by printing in the places indicated with the word "Inflammable" in letters at least 3 inches high.** [Par. T107]
85.90 Inflammable solids and oxidizing materials in containers other than tanks-(a) Loading.37 Boxes, barrels, kegs, drums, or bags, containing any inflammable solid or oxidizing material when loaded into or transported in the same vehicle with any acid or other corrosive liquid, in any container bearing white ("Corrosive Liquid") label should be separated as far as practicable from the container bearing such label.
(b) Defective containers not transported. No broken container, or one permitting escape of contents, shall be offered for transportation or transported.** [Par. T110]
85.100 Corrosive liquids in containers other than tanks-(a) Loading. Boxes, barrels, drums, or carboys, containing any acid or other corrosive liquid when loaded into or transported in the same vehicle with any container bearing a yellow label, should be separated as far as practicable from the container bearing such label. Containers of corrosive liquid should be so loaded that they cannot fall, and that other freight cannot fall upon them. They must be loaded with top sides up, in accordance with the marking thereon. (b) Defective packages not transported. No leaking package shall be offered for transportation or transported.*+ [Par. T115]
85.101 Corrosive liquids in bulk in tanks. Acids or other corrosive liquids may be transported in bulk when in motor tank trucks or motor tank semitrailers having capacity not exceeding 2,500 gallons each. Each tank truck and tank semitrailer shall have a competent driver.*+ [Par. T116]
"See also provisions for loading dangerous articles other than explosives, $ 85.70.
**For statutory and source citations, see note to § 85.1.
85.102 Tank vehicles for corrosive liquids in bulk, construction-(a) Previous and new construction. Provided they are in safe operating condition, motor tank vehicles, or the tanks of motor tank vehicles, constructed previous to the effective date of the regulations in this part may continue in service until further order of the Commission. Tank vehicles constructed subsequent to the effective date of the regulations in this part shall be in compliance with the following:
(b) Material, capacity, and gage of tank. (1) Except as hereinafter provided, tanks of tank vehicles used for the transportation of any acid or other corrosive liquid shall not exceed capacity shown and shall be constructed throughout of open-hearth steel or blueannealed steel of thickness and gage in accordance with the following table:
THICKNESS OF METAL FOR TANKS FOR CORROSIVE LIQUIDS
(2) Materials other than open-hearth or blue-annealed steels may be used if in thicknesses that will give tank strengths not less than those of the steels described.
(c) Joints. Shell and head joints shall be in compliance with
§ 85.74 (c).
(d) Test. Each tank of the completed tank vehicle shall be tested and proven to be tight at 25 pounds minimum air pressure.
(e) Head radius. The head radius of curvature shall be equal to the diameter of the tank.
(f) Tank support and attachment to vehicle frame. Tanks shall be adequately supported on and securely bolted or clamped to the frames of vehicles.
(g) Bottom outlet. No tanks, except those used for shipments of sludge acid, shall have bottom discharge outlet.
(h) Protection in collisions. Bottom-outlet valves and faucets projecting beyond the shell or head of the tank shall be adequately protected against injury in the event of collision.*t [Pars. T117T124]
85.103 Marking on vehicles for corrosive liquids. Every tank truck and tank semitrailer containing any shipment of acid or other corrosive liquid shall be conspicuously placarded on the front end, both sides, and rear with the standard "Corrosive Liquid" placard, or be conspicuously and legibly marked by printing in the places indicated with the words "Corrosive Liquid-Caution-Avoid Contact," in letters at least 3 inches high.*t [Par. T125]
*For statutory and source citations, see note to § 85.1.
85.110 Compressed gases in containers other than tanks-(a) Loading.39 Cylinders of any compressed gas prepared in compliance with the regulations in Parts 72, 74-82 may be transported in and must be loaded into a truck or other vehicle in horizontal position, except when the vehicle is provided with high, solid or slatted, not sectional, sides, and an efficient means for securely holding the cylinders in an upright position, and except when the cylinders are packed in boxes or crates; and care should be exercised to prevent damage to valves or valve fittings. Cylinders must be so loaded that during transportation no pressure upon the valves from the outside will be possible. [As amended Mar. 12, 1936, 1 F.R. 49]
Cylinders must be loaded with valves toward the forward end of the vehicle when vehicle is to be unloaded from the read. [As amended Mar. 12, 1936, 1 F.R. 49]
(b) Smoking prohibited. No smoking shall be permitted on or near vehicles containing any cylinder of gas bearing the red caution label prescribed by the regulations in Parts 80-82.
(c) Leaking containers not transported. Leaking containers must not be offered for transportation or transported.
(d) Truck transfer of multiple-unit tanks containing compressed gases transported by rail freight. Tanks containing compressed gases authorized for transportation by rail freight on multiple-unit tank cars (specification 106A) may be transported on public highways by motor truck or other vehicle from railroad to consignee premises under the conditions prescribed by § 80.175 (f) (2) of the regulations for rail freight.
(e) Liquefied petroleum gas in bulk in tanks. It is understood that no compressed gas is transported in bulk in tanks by any common carrier engaged in interstate or foreign commerce on public highways, and no regulations are prescribed herein for such transportation. If it should later develop that such transportation is contemplated, appropriate regulations will be formulated.
(f) Sulphur dioxide and dichlorodifluoromethane in multipleunit tanks transported by truck. Tanks complying with specification 106A500 containing sulphur dioxide or dichlorodifluoromethane may be transported on trucks when securely checked or clamped thereon to prevent shifting, and provided adequate facilities are present for handling tanks where transfer in transit is necessary. [As added Dec. 14, 1936, 2 F.R. 31]*+ [Pars. T130-T135]
85.120 Poisons in containers other than tanks-(a) Loading of poisons, body of truck clean.89 Cylinders, carboys, fiberboard or wooden boxes, barrels, kegs, drums, or bags, containing any poisonous substance, class A, B, or C, according to the packing prescribed in the regulations in Parts 72, 74-82, should be so carefully loaded and transported as to prevent leakage or sifting of contents due to breakage of containers. If leakage or sifting occurs in transit, the body of the truck or other vehicle in which the defective package was carried should be thoroughly cleaned before again being loaded.
* See also provisions for loading dangerous articles other than explosives, § 85.70.
(b) Defective packages of poisons not transported. Packages with leaking or sifting contents must not be offered for transportation or transported.*+ [Pars. T150-T151]
85.130 Accidents and wrecks. (a) In case of accident involving any vehicle containing any explosive, prevention of fire is the most important precaution to observe. All unbroken packages, and as much of any broken packages as possible, should be gathered up and removed to a place of safety.
(b) Many explosives are readily fired by a blow or by a spark produced when two pieces of metal, or a piece of metal and a stone, come violently in contact with each other. And in clearing a wreck involving any vehicle containing any explosive, care must be exercised not to produce sparks with tools or otherwise in moving the wreckage or working about it.
(c) Only persons necessary for clearing away the wreckage should be allowed in the vicinity.
(d) In case of accident involving any vehicle containing any inflammable liquid, no lighted lantern or torch should be used until all inflammable liquid that has leaked from any container has been thoroughly covered with dry earth. Water will not extinguish a motor fuel or oil fire. Such a fire should be smothered by the use of earth, steam, or wet blankets; or fire extinguishers approved for this purpose should be used.
(e) When any inflammable liquid is escaping from a container, care should be exercised to prevent the liquid from spreading over a wide area and from flowing into sewers or stream.
(f) When necessary to transfer from container to container, or from vehicle to vehicle, any explosive, inflammable liquid, or compressed gas, or container of any such article with escaping contents, guards shall be located in such positions as to warn all approaching vehicles of the danger, to caution all persons against the use of matches or other lighting device, and as to the danger of smoking in the immediate vicinity.*t [Pars. T160-T165]
CROSS REFERENCE: For necessary accident reports to be made by motor carriers, see Part 195.
NOTE: The Port of New York Authority has adopted restrictions concerning dangerous articles, from which the following are brief extracts:
Transportation of the following articles through the vehicular tunnels under our jurisdiction is prohibited:
Inflammable liquids as defined by ICC regulations, in bulk in barrels, drums, or tanks, except in quantity required for operation of vehicle.
Liquids having flash point at or below
Magnesium, metallic, powdered.
*For statutory and source citations, see note to § 85.1.