/Docs/G/Org-IAEA-Safety-GSR3-CmA/Sec/5_Existing_0.md
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The regulatory body or other relevant authority shall establish a strategy for protection against exposure due to ²²²Rn in workplaces, including the establishment of an appropriate reference level for ²²²Rn. The reference level for ²²²Rn shall be set at a value that does not exceed an annual average activity concentration of ²²²Rn of 1000 Bq/m³, with account taken of the prevailing social and economic circumstances.⁵⁷