(a) determine the maximum radiation level in units of millisieverts per hour (msv/h) at a distance of 1 m from the external surfaces of the package, overpack, container, or unpackaged lsa-i and sco-i. the value determined shall be multiplied by 100 and the resulting number is the transport index. for uranium and thorium ores and their concentrates, the maximum radiation level at any point 1 m from the external surface of the load may be taken as:

0.4 msv/h for ores and physical concentrates of uranium and thorium;

0.3 msv/h for chemical concentrates of thorium;

0.02 msv/h for chemical concentrates of uranium, other than uranium hexafluoride;

1. for tanks, containers and unpackaged lsa-i and sco-i, the value determined in step (a) above shall be multiplied by the appropriate factor from table 5.1.5.3.1;

    

2. the value obtained in steps (a) and (b) above shall be rounded up to the first decimal place (e.g. 1.13 becomes 1.2), except that a value of 0.05 or less may be considered as zero.

table 5.1.5.3.1: multiplication factors for tanks, containers and unpackaged lsa-i and sco-i

a largest cross-sectional area of the load being measured.