Radiation Protection Glossary

A radiation protection glossary for Radiation Protection Supervisors (RPS), Radiation Protection Advisers (RPA) and anyone else interesting in radiation safety terms and definitions. The glossary is a mixture of health physics , phrases related to radiation protection legislation, transport, practical safety, technical terms and similar.

Search the Glossary by either clicking on a letter or typing a keyword into the search box. This glossary is relational so when looking at one term you can click through to other related terms as required.

For formal advice, see our Radiation Protection Adviser pages. 

Risk Assessment

With respect to Radiation Protection, risk assessment is essentially about assessing risk of radiation exposure in order to mitigate that exposure, ensuring doses are as low as reasonably practicable (ALARP) and certainly below Dose Limits. In the UK risk assessment is a requirement of Regulation 7 of the Ionising Radiations Regulations 1999. A basic risk assessment requires that the radiation hazards are identified, an assessment of what can go wrong to realise those hazards is made, prediction of how likely something will go wrong and produce the hazard, and finally what are the consequences of the radiation exposure. Radiation risk assessments can be simple or complicated depending on the circumstances.

Radiation is one of the important factors in evolution. It causes mutation, and some level of mutation is actually good for evolution

– David Grinspoon -