5007.9.3 Portable fire extinguishers.

Cargo tanks shall be equipped with a portable fire extinguisher complying with the requirements of FC 906 and having a minimum rating of 2-A:20-B:C. During unloading of the cargo tank, the portable fire extinguisher shall be outside of the motor vehicle and shall be readily available, but at a distance of at least 15 feet (4572 mm) from the unloading valves.

5007.9.4 Delivery and unloading of cargo.

Except as otherwise provided in FC 5706.2.8, cargo tanks shall deliver flammable or combustible liquids only to approved stationary storage systems. Flammable liquids being transported by a motor vehicle other than a cargo tank shall not be dispensed from a container prior to removal of the container from the vehicle.

5007.9.5 Emergency transfers between vehicles.

Department representatives may authorize a transfer from one cargo tank directly into a permitted or other approved cargo tank in the interest of public safety, such as when a cargo tank has been involved in a vehicular accident or has otherwise been damaged.

5007.9.6 Compartmental markings.

The maximum capacity of each compartment of a cargo tank shall be marked, in gallons, on the driver and passenger sides of the cargo tank in 3-inch (76-mm) white letters.

5007.10 Transportation of compressed gases by cargo tank.

Transportation of compressed gases by cargo tank shall additionally comply with the requirements of FC 5007.10.1.

5007.10.1 Prohibited compressed gases.

It shall be unlawful to transport the following compressed gases in a cargo tank:

   1.   Acetylene.

   2.   Liquefied carbon monoxide.

   3.   Liquefied chlorine.

   4.   Cyanogen.

   5.   Cyclopropane.

   6.   Diborane.

   7.   Di-, mono-, and tri-methylamines.

   8.   Dimethyl ether.

   9.   Ethylene.

   10.   Fluorine.

   11.   Liquefied hydrogen.

   12.   Hydrogen cyanide.

   13.   Hydrogen sulfide.

   14.   Liquefied petroleum gases (LPG).

   15.   Liquefied natural gas (LNG).

   16.   Methylacetylene propadiene mixture-stabilized, including propyns, mapp gas or apache gas.

   17.   Methyl chloride.

   18.   Methyl mercaptan.

   19.   Phosgene.

   20.   Phosphine.

   21.   Vinyl chloride.

   22.   Vinyl fluoride.

   23.   Vinyl methyl ether.

   24.   Any gas mixtures of the foregoing.

   25.   Any gas that contains:

      25.1.   Bromacetone.

      25.2.   Cyanogen chloride containing less than 0.9 percent water.

      25.3.   Diphosgene.

      25.4.   Ethyldichlorarsine.

      25.5.   Methyldichlorarsine.

      25.6.   Nitrogen peroxide (tetroxide).

      25.7.   Nitrogen tetroxide-nitric oxide mixtures containing up to 33.2 percent weight nitric oxide.