S.C. Code Regs. § § 61-63.XI.RHA 11.7

Current through Register Vol. 48, 12, December 27, 2024

Section 61-63.XI.RHA 11.7 - Performance Criteria for Sealed Sources

11.7.1 Requirements. Sealed sources installed after July 1, 1996:

11.7.1.1 Must have a certificate of registration issued under 10 CFR 32.210 or RHA 2.29.

11.7.1.2 Must be doubly encapsulated;

11.7.1.3 Must use radioactive material that is as nondispersible as practical and that is as insoluble as practical if the source is used in a wet-source-storage or wet-source-change irradiator;

11.7.1.4 Must be encapsulated in a material resistant to general corrosion and to localized corrosion, such as 316L stainless steel or other material with equivalent resistance if the sources are for use in irradiator pools; and

11.7.1.5 In prototype testing of the sealed source, must have been leak tested and found leak-free after each of the tests described in paragraphs 11.7.2 through 11.7.7 of this section.

11.7.2 Temperature. The test source must be held at -40 ° C for 20 minutes, 600 ° C for 1 hour, and then be subjected to a thermal shock test with a temperature drop from 600 ° C to 20 ° C within 15 seconds.

11.7.3 Pressure. The test source must be twice subjected for at least 5 minutes to an external pressure (absolute) of 2 million Newtons per square meter.

11.7.4 Impact. A 2-kilogram steel weight, 2.5 centimeters in diameter, must be dropped from a height of 1 meter onto the test source.

11.7.5 Vibration. The test source must be subjected 3 times for 10 minutes each to vibrations sweeping from 25 hertz to 500 hertz with a peak amplitude of 5 times the acceleration of gravity. In addition, each test source must be vibrated for 30 minutes at each resonant frequency found.

11.7.6 Puncture. A 50-gram weight and pin, 0.3-centimeter pin diameter, must be dropped from a height of 1 meter onto the test source.

11.7.7 Bend. If the length of the source is more than 15 times larger than the minimum cross-sectional dimension, the test source must be subjected to a force of 2000 Newtons at its center equidistant from two support cylinders, the distance between which is 10 times the minimum cross-sectional dimension of the source.

S.C. Code Regs. § 61-63.XI.RHA 11.7