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:
(b)
The applicant submits sufficient information regarding each device pertinent to evaluation of the potential radiation exposure, including:
(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;
(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.
(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;
(4)
The device has been subjected to and has satisfactorily passed the prototype tests prescribed by § 32.101, Schedule B, of this part.