The mark as required in 6.7.2.20.2 shall include the UN number and the technical name with the
approved concentration of the substance concerned.

Organic peroxides and self-reactive substances specifically listed in portable tank instruction T23
in 4.2.5.2.6 may be carried in portable tanks.

Additional provisions applicable to the carriage of Class 6.1 substances in portable tanks

(Reserved)

Additional provisions applicable to the carriage of Class 6.2 substances in portable tanks

(Reserved)

Additional provisions applicable to the carriage of Class 7 substances in portable tanks

Portable tanks used for the carriage of radioactive material shall not be used for the carriage of other goods.

The degree of filling for portable tanks shall not exceed 90% or, alternatively, any other value
approved by the competent authority.

Additional provisions applicable to the carriage of Class 8 substances in portable tanks

Pressure-relief devices of portable tanks used for the carriage of Class 8 substances shall be inspected
at intervals not exceeding one year.

Additional provisions applicable to the carriage of Class 9 substances in portable tanks

(Reserved)

Additional provisions applicable to the carriage of solid substances carried above their melting point

Solid substances carried or offered for carriage above their melting point which are not assigned a
portable tank instruction in column (10) of the Table A of Chapter 3.2 or when the assigned portable
tank instruction does not apply to carriage at temperatures above their melting point may be carried in
portable tanks provided that the solid substances are classified in Classes 4.1, 4.2, 4.3, 5.1, 6.1, 8 or 9
and have no subsidiary risk other than that of Class 6.1 or Class 8 and are in packing group II or III.

Unless otherwise indicated in the Table A of Chapter 3.2, portable tanks used for the carriage of these
solid substances above their melting point shall conform to the provisions of portable tank instruction
T4 for solid substances of packing group III or T7 for solid substances of packing group II. A portable
tank which affords an equivalent or greater level of safety may be selected according to 4.2.5.2.5. The
maximum degree of filling (in %) shall be determined according to 4.2.1.9.5 (TP3).

General provisions for the use of portable tanks for the carriage of non-refrigerated liquefied gases and chemicals under pressure

This section provides general provisions applicable to the use of portable tanks for the carriage of nonrefrigerated liquefied gases and chemicals under pressure.

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