Regulation 47

The design of Type A packages shall, in addition to meeting the requirements of regulation 42 and, where applicable, regulation 43, meet the requirements of paragraphs (2) to (18).

The smallest overall external dimension of the package shall not be less than 10 cm.

The outside of the package shall incorporate a feature such as a seal, which is not readily breakable and which, while intact, will be evidence that it has not been opened.

Any tie-down attachments on the package shall be so designed that, under both normal and accident conditions, the forces in those attachments shall not impair the ability of the package to meet the requirements of these Regulations.

The design of the package shall take into account temperatures ranging from -40°C to +70°C for the components of the packaging. Special attention shall be given to freezing temperatures for liquid contents and to the potential degradation of packaging materials within the given temperature range.

The design and manufacturing techniques shall be in accordance with these Regulations or other requirements, acceptable to the Chief Executive.

The design shall include a containment system securely closed by a positive fastening device which cannot be opened unintentionally or by pressure which may arise within the package.

Special form radioactive material may be considered as a component of the containment system.

If the containment system forms a separate unit of the package, it shall be capable of being securely closed by a positive fastening device which is independent of any other part of the packaging.

The design of any component of the containment system shall take into account, where applicable, the radiolytic decomposition of liquids and other vulnerable materials and the generation of gas by chemical reaction and radiolysis.

The containment system shall retain its radioactive contents under a reduction of ambient pressure to 60 kPa.

All valves, other than pressure relief valves, shall be provided with an enclosure to retain any leakage from the valve.

A radiation shield which encloses a component of the package specified as a part of the containment system shall be so designed as to prevent the unintentional release of that component from the shield. Where the radiation shield and such component within it form a separate unit, the radiation shield shall be capable of being securely closed by a positive fastening device which is independent of any other packaging structure.

A Type A package shall be so designed that if it were subjected to the tests specified in paragraph 5 of Section E of the Fourth Schedule, it would prevent —

The design of a Type A package intended for liquid radioactive material shall make provision for ullage to accommodate variations in the temperature of the contents, dynamic effects and filling dynamics.

A Type A package designed to contain liquids shall, in addition —

A Type A package designed for gases shall prevent loss or dispersal of the radioactive contents if the package were subjected to the tests specified in paragraph 6 of Section E of the Fourth Schedule.

Paragraph (17) shall not apply to a package designed for noble gases.