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§ 32.53 Luminous safety devices for use in aircraft: Requirements for license to manufacture, assemble, repair or initially transfer.An application for a specific license to manufacture, assemble, repair or initially transfer luminous safety devices containing tritium or promethium-147 for use in aircraft, for distribution to persons generally licensed under § 31.7 of this chapter, will be approved if: (a) The applicant satisfies the general requirements specified in § 30.33 of this chapter; (b) The applicant submits sufficient information regarding each device pertinent to evaluation of the potential radiation exposure, including: (1) Chemical and physical form and maximum quantity of tritium or promethium-147 in each device; (2) Details of construction and design; (3) Details of the method of binding or containing the tritium or promethium-147; (4) Procedures for and results of prototype testing to demonstrate that the tritium or promethium-147 will not be released to the environment under the most severe conditions likely to be encountered in normal use; (5) Any quality control procedures proposed as alternatives to those prescribed by § 32.55; (6) Any additional information, including experimental studies and tests, required by the Commission to facilitate a determination of the safety of the device. (c) Each device will contain no more than 10 curies of tritium or 300 millicuries of promethium-147. The levels of radiation from each device containing promethium-147 will not exceed 0.5 millirad per hour at 10 centimeters from any surface when measured through 50 milligrams per square centimeter of absorber. (d) The Commission determines that: (1) The method of incorporation and binding of the tritium or promethium-147 in the device is such that the tritium or promethium-147 will not be released under the most severe conditions which are likely to be encountered in normal use and handling of the device; (2) The tritium or promethium-147 is incorporated or enclosed so as to preclude direct physical contact by any person with it; (3) The device is so designed that it cannot easily be disassembled; and (4) The device has been subjected to and has satisfactorily passed the prototype tests prescribed by § 32.101, Schedule B, of this part. [30 FR 8192, June 26, 1965, as amended at 33 FR 6463, Apr. 27, 1968; 43 FR 6923, Feb. 17, 1978] |
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