Alcoholic beverages containing more than 24% alcohol but not more than 70% by volume, when transported as part of the manufacturing process, may be transported in wooden barrels with a capacity of more than 250 litres and not more than 500 litres meeting the general requirements of 4.1.1, as appropriate, on the following conditions:
(a) The wooden barrels shall be checked and tightened before filling;
(b) Sufficient ullage (not less than 3%) shall be left to allow for the expansion of the liquid;
(c) The wooden barrels shall be transported with the bungholes pointing upwards;
(d) The wooden barrels shall be transported in containers meeting the requirements of the International Convention for Safe Containers (CSC), as amended. Each cask shall be secured in custom-made cradles and be wedged by appropriate means to prevent it from being displaced in any way during transport.