PROTECT FP6-036425 Regulatory action levels Justification for an action level the need to be consistent with the approach for human radiological protection; a requirement to have a robust, defensible regulatory action level above which it is likely that significant harm would be caused to the environment; and the need for a value which can act as an upper threshold below which the regulatory action would be to encourage optimisation of operational practices to drive environmental dose rates to a level close to or below that of the screening level.
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