Radiation Protection Glossary

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

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Equivalent Dose

Equivalent Dose (can be referred to as Dose Equivalent) is a quantity which takes into effect 'radiation quality', which relates to the degree to which a type of Ionising Radiation will produce biological damage. Equivalent Dose is obtained by multiplying the Absorbed Dose by a Radiation Weighting Factor or Quality Factor if Dose Equivalent is used . The resulting quantity can then be expressed numerically in Sieverts (Sv) or in the old units of Rem. The quantity is independent of the absorbing material (i.e. tissue).

Reality is merely an illusion, albeit a very persistent one

– Albert Einstein