DESIGN AND CONSTRUCTION
Design safety is preferred to operational control safety and is largely provided by the
packaging. The regulations include provisions that packages shall be so designed that they
are easily handled and properly secured during transport. Heavier packages are provided with
lifting attachments. The outer layer of the package must not collect or retain water and the
finish should be such that it may be easily decontaminated in case of surface contamination.
Additional design requirements specify that the smallest overall external dimension is
10 centimetres and that account must be taken of variations in temperature to which the
package may be subjected during transport and storage.