A medical sterilisation facility operator is tasked with positioning a high-activity cobalt-60 (Co\text{Co}Co-60) source, which emits high-energy gamma radiation, into an irradiation chamber.
State two distinct safety practices the operator should employ to minimise their radiation exposure during this operation.
94 exam-style questions on Edexcel GCSE Physics 6.5 Uses and dangers of radioactivity, covering 6.5.1 Uses of radioactivity, 6.5.2 Dangers of ionising radiation and precautions, 6.5.3 Half-life and radiation dangers, 6.5.4 Safety precautions for radiation exposure, and 6.5.5 Contamination and irradiation. Each one has a worked solution and a mark scheme showing where the marks go.