International Transport Regulations 24 1.4 Packaging Dangerous goods shall be packed in good quality packagings. Packagings shall be strong enough to withstand the shocks and loadings normally encountered during carriage, including trans-shipment between transport units and between transport units and warehouses. Packagings shall be constructed and closed so as to prevent any loss of contents when prepared for transport which might be caused under normal conditions of transport, by vibration, or by changes in temperature, humidity or pressure No dangerous residue shall adhere to the outside of packagings during carriage. "Overpack" means an enclosure used (by a single consignor in the case of Class 7) to contain one or more packages, consolidated into a single unit easier to handle and stow during carriage; Examples of Overpack: 1. A loading tray such as a pallet, on which several packages are placed or stacked and secured by a plastics strip, shrink or stretch wrapping or other appropriate means; or 2. An outer protective packaging such as a box or a crate; "Package" means the complete product of the packing operation, consisting of the packaging and its contents prepared for dispatch. Dangerous goods shall not be packed together in the same outer packaging or in large packagings, with dangerous or other goods if they react dangerously with each other and cause: (a) combustion or evolution of considerable heat; (b) evolution of flammable, asphyxiant, oxidizing or toxic gases; (c) the formation of corrosive substances; or (d) the formation of unstable substances. Before being filled and handed over for carriage, every packaging, including IBCs and large packagings, shall be checked to be free from corrosion, contamination or other defects Any packaging which shows signs of weakening, with reference to the approved prototype shall no longer be used or shall be refurbished so that it can pass the tests required for the prototype. Plastic packagings For plastics drums and jerricans, rigid plastics IBCs and composite IBCs with plastics inner receptacles, unless otherwise approved by the competent authority, the period of use permitted for the carriage of dangerous substances shall be five years from the date of manufacture of the receptacles, except where a shorter period of use is prescribed because of the nature of the substance to be carried. Approved packagings: The packs must have passed specific tests and conform to the prototype tested. Packagings shall be manufactured, reconditioned and tested under a quality assurance programme which satisfies the competent authority.
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