5.3 Provisions for high consequence dangerous goods

5.3.1 Definition of high consequence dangerous goods

5.3.1.1 High consequence dangerous goods are those which have the potential for misuse in a terrorist event and which may, as a result, produce serious consequences such as mass casualties, mass destruction or, particularly for Class 7, mass socio-economic disruption.

5.3.1.2 An indicative list of high consequence dangerous goods in classes and divisions other than Class 7 is given in Table 1-5.

Table 1-5. Indicative list of high consequence dangerous goods

Class 1 Division 1.1 explosives
Class 1 Division 1.2 explosives
Class 1 Division 1.3 compatability group C explosives
Class 1 Division 1.4 UN Nos. 0104, 0237, 0255, 0267, 0289, 0361, 0365, 0366, 0440, 0441, 0455, 0456, 0500, 0512 and 0513
Class 1 Division 1.5 explosives
Class 1 Division 1.6 explosives
Division 2.3 toxic gases (excluding aerosols)
Class 3 desensitized explosives
Class 4.1 desensitized explosives
Division 6.1 substances of Packing Group I; except when transported under the excepted quantity provisions in 1;2.4
Division 6.2 infectious substances of Category A (UN Nos. 2814 and 2900)
 and medical waste of Category A (UN 3549)

5.3.1.3 For dangerous goods of Class 7, high consequence radioactive material is that with an activity equal to or greater than a transport security threshold of 3 000 A2 per single package (see also 2;7.2.2.1) except for the following radionuclides where the transport security threshold is given in Table 1-6 below.


5.3.1.4 For mixtures of radionuclides, determination of whether or not the transport security threshold has been met or exceeded can be calculated by summing the ratios of activity present for each radionuclide divided by the transport security threshold for that radionuclide. If the sum of the fractions is less than 1, then the radioactivity threshold for the mixture has not been met nor exceeded.

This calculation can be made with the formula:

SUM i((Ai/Ti) < 1

Where:
Ai = activity of radionuclide i that is present in a package (TBq)
Ti = transport security threshold for radionuclide i (TBq).

5.3.1.5 When radioactive material possess subsidiary hazards of other classes or divisions, the criteria of Table 1-5 should also be taken into account (see also 1;6.5).