contamination

Pollution of work spaces, devices, rooms, water, air etc. due to radioactive substances. Surface contamination: Pollution of a surface with radioactive substances, comprising non-adhesive, adhesive activity and that having entered via the surface. Surface contamination is specified in terms of activity per unit area, the unit is Becquerel per square centimetre. Surface contamination, non-adhesive: Pollution of a surface with radioactive substances, where a further distribution of the radioactive substances cannot be excluded.