For functional reasons some types of lamps contain the radioactive gas krypton-85
(Kr-85). This guidance is aimed at employers involved in the handling, use, holding,
storage, transport or disposal of these lamps in limited quantities. Under the
Ionising Radiations Regulations 1999, these employers fall into the category of
‘radiation employers’ however limited their use. The purpose of this guidance is to
inform such ‘radiation employers’ of their responsibilities in relation to these lamps
and provide guidance on their obligations.