Dangerous Goods by Road
A package shall be so designed that, if it were subjected to:
(a) The tests specified in 6.4.15, it would restrict the loss of radioactive contents to not
more than 10-6 A2 per hour; and
(b) The tests specified in 6.4.17.1, 6.4.17.2 (b), 6.4.17.3, and 6.4.17.4 and either the test
in
(i) 6.4.17.2 (c), when the package has a mass not greater than 500 kg, an overall density
not greater than 1 000 kg/m3 based on the external dimensions, and radioactive contents greater
than 1 000 A2 not as special form radioactive material, or
(ii) 6.4.17.2 (a), for all other packages, it would meet the following requirements:
- retain sufficient shielding to ensure that the radiation level at 1 m from the surface of
the package would not exceed 10 mSv/h with the maximum radioactive contents which the package is
designed to contain; and
- restrict the accumulated loss of radioactive contents in a period of one week to not more
than 10 A2 for krypton-85 and not more than A2 for all other radionuclides.
Where mixtures of different radionuclides are present, the provisions of 2.2.7.2.2.4 to 2.2.7.2.2.6
shall apply except that for krypton-85 an effective A (i) value equal to 10 A may be used.
For case (a)
t shall take into account the external contamination limits of 4.1.9.1.2.
A package for radioactive contents with activity greater than 105 A2 shall be so designed that if it were
subjected to the enhanced water immersion test specified in 6.4.18, there would be no rupture of the
containment system.
Compliance with the permitted activity release limits shall depend neither upon filters nor upon a
mechanical cooling system.
A package shall not include a pressure relief system from the containment system which would allow
the release of radioactive material to the environment under the conditions of the tests specified in
6.4.15 and 6.4.17.
A package shall be so designed that if it were at the maximum normal operating pressure and it were
subjected to the tests specified in 6.4.15 and 6.4.17, the level of strains in the containment system
would not attain values which would adversely affect the package in such a way that it would fail to
meet the applicable requirements.
A package shall not have a maximum normal operating pressure in excess of a gauge pressure
of 700 kPa.
A package containing low dispersible radioactive material shall be so designed that any features added
to the low dispersible radioactive material that are not part of it, or any internal components of the
packaging shall not adversely affect the performance of the low dispersible radioactive material.
A package shall be designed for an ambient temperature range from -40 °C to +38 °C.
Requirements for Type B(M) packages
Type B(M) packages shall meet the requirements for Type B(U) packages specified in 6.4.8.1, except
that for packages to be carried solely within a specified country or solely between specified countries,
conditions other than those given in 6.4.7.5, 6.4.8.4 to 6.4.8.6, and 6.4.8.9 to 6.4.8.15 above may be
assumed with the approval of the competent authorities of these countries. Notwithstanding, the
requirements for Type B(U) packages specified in 6.4.8.4 and 6.4.8.9 to 6.4.8.15 shall be met as far as
practicable.
Intermittent venting of Type B(M) packages may be permitted during carriage, provided that the
operational controls for venting are acceptable to the relevant competent authorities.
Requirements for Type C packages
Type C packages shall be designed to meet the requirements specified in 6.4.2 and of 6.4.7.2 to
6.4.7.15, except as specified in 6.4.7.14 (a), and of the requirements specified in 6.4.8.2 to 6.4.8.6,
6.4.8.10 to 6.4.8.15, and, in addition, of 6.4.10.2 to 6.4.10.4.
A package shall be capable of meeting the assessment criteria prescribed for tests in 6.4.8.8 (b)
and 6.4.8.12 after burial in an environment defined by a thermal conductivity of 0.33 W.m-1.K-1 and a
temperature of 38 °C in the steady state. Initial conditions for the assessment shall assume that any
thermal insulation of the package remains intact, the package is at the maximum normal operating
pressure and the ambient temperature is 38 °C.
A package shall be so designed that, if it were at the maximum normal operating pressure and
subjected to:
(a) The tests specified in 6.4.15, it would restrict the loss of radioactive contents to not more
than 10-6 A2 per hour; and
(b) The test sequences in 6.4.20.1,
(i) it would retain sufficient shielding to ensure that the radiation level at 1 m from the
surface of the package would not exceed 10 mSv/h with the maximum radioactive
contents which the package is designed to contain; and
(ii) it would restrict the accumulated loss of radioactive contents in a period of 1 week to
not more than 10 A2 for krypton-85 and not more than A2 for all other radionuclides.
Where mixtures of different radionuclides are present, the provisions of 2.2.7.2.2.4 to 2.2.7.2.2.6 shall
apply except that for krypton-85 an effective A2(i) value equal to 10 A2 may be used. For case (a)
above, the assessment shall take into account the external contamination limits of 4.1.9.1.2.