1.1 Specifies requirements for the optical, mechanical and radioactive characteristics of the radioluminescent deposits fixed on timekeeping instruments, together with the methods of test relating to them and the conditions for carrying out checks on radioluminescent deposits and radiation protection limits for radioactive paints.
1.2 The requirements apply to all timekeeping instruments which include components like hands, dials, bezels, etc, bearing radioluminescent deposits.
1.3 It also covers the deposits themselves, whether they are fixed on the timekeeping instruments in question, or on special supports.
1.4 This standard shall not constitute an exemption from the obligation of notification, declaration and licensing in connection with the manufacture, maintenance, repair, storage, transport, import/ex-port and disposal of time pieces containing components bearing radioluminous paint. Such operations shall be carried out in accordance with national norms for radiation protection.
1.5 This standard is not intended to cover radiation protection aspects for special time pieces con-taining quantities of radioactive materials which exceed the limits specified in this standard. These shall be subject to the jurisdiction of the appropriate national authority.
IS 9275-1979 history
1980IS 9275-1979 Radioluminescence requirements for timing instruments