(1) This Order may be cited as the Radioactive Substances (Natural Gas) Exemption Order 2002 and shall come into force on 17th May 2002.
(2) This Order extends to Great Britain.
(3) In this Order—
“natural gas” includes natural gas in solid and liquid forms, and products derived by manufacture from natural gas; and
“specified natural gas” means natural gas which contains—
radon-222, or
a radionuclide which succeeds radon-222 in the same radioactive series,
in concentrations which do not exceed 5 becquerels per gram for each radionuclide.