SCHEDULE 23Radioactive substances activities

PART 2Interpretation

Radionuclides not of natural terrestrial or cosmic origin6

A substance or article which contains one or more radionuclides that are not of natural terrestrial or cosmic origin is radioactive material or radioactive waste where—

a

the substance or article is a solid or a relevant liquid and it has a concentration of radioactivity which exceeds the value specified in column 2 of Table 2, or

b

the substance is any other liquid or a gas.