An industrial radiographer is using a high-activity gamma-emitting isotope, such as Cobalt-60, to conduct non-destructive testing on pipeline welds at an open-air construction site.
State two distinct safety precautions that the radiographer should implement during this field operation to minimize their occupational radiation exposure.
94 exam-style questions on Edexcel GCSE Physics 6.5 Uses and dangers of radioactivity. Each one has a worked solution and a mark scheme showing where the marks go.