5.1.5.3.4

packages, overpacks and containers shall be assigned to either category i-white, ii-yellow or

iii-yellow in accordance with the conditions specified in table 5.1.5.3.4 and with the following

requirements:

(a) for a package, overpack or container, both the transport index and the surface radiation level

conditions shall be taken into account in determining which is the appropriate category. where

the transport index satisfies the condition for one category but the surface radiation level

satisfies the condition for a different category, the package, overpack or container shall be

assigned to the higher category. for this purpose, category i-white shall be regarded as the

lowest category;

(b) the transport index shall be determined following the procedures specified in 5.1.5.3.1 and

5.1.5.3.2;

under exclusive use and under the provisions of 7.5.11, cv33 (1.3) and (3.5) (a);

(d) a package carried under a special arrangement shall be assigned to category iii-yellow

except under the provisions of 5.1.5.3.5;

(e) an overpack or container which contains packages carried under special arrangement shall be

assigned to category iii-yellow except under the provisions of 5.1.5.3.5.

table 5.1.5.3.4: categories of packages, overpacks and containers ‌

conditions
transport index	maximum radiation level at any point on external surface	category
0a	not more than 0.005 msv/h	i-white
more than 0 but not more than 1a	more than 0.005 msv/h but not more than 0.5 msv/h	ii-yellow
more than 1 but not more than 10	more than 0.5 msv/h but not more than 2 msv/h	iii-yellow
more than 10	more than 2 msv/h but not more than 10 msv/h	iii-yellow b