Principle of justification
Decisions that alter (i.e. introduce, reduce or remove) the radiation exposure situation should, overall, do more good than harm. This means that, by introducing a new radiation source, or by overall reducing existing or emergency exposures, one should achieve sufficient individual or societal benefit to offset any harm including radiation detriment to humans and the environment.
ICRP Glossary entry - 8 March 2019
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