### sec.89 Gaseous tritium light devices— Act , s 210 For section 210 of the Act , a radioactive substance containing the radionuclide hydrogen-3 with an activity of less than 74GBq, incorporated as a sealed radioactive substance in a gaseous tritium light device, is exempt from sections 12 , 13 , 23 , 24 and 25 of the Act if— the device is being used as a safety, or warning, sign; and not more than 2% of the radionuclide is contained in water. - (a) the device is being used as a safety, or warning, sign; and - (b) not more than 2% of the radionuclide is contained in water.

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Section sec.89 - Radiation Safety Regulation 2021 - Gaseous tritium light devices— Act , s 210 — Zoe

sec.89Gaseous tritium light devices— Act , s&#160;210

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sec.89Gaseous tritium light devices— Act , s 210