Alternative Frequency for Periodic Leakage Rate Testing

This paper describes methodologies that may be used to extend the interval applied to the periodic leakage rate testing of certified Type B transportation packagings from one to up to five years. The extended intervals are predicated on the basis of acceptable results of long-term O-ring performance tests and continuous monitoring of environmental conditions of the packagings provided by the ARG-US radio frequency identification system. Extending the interval between periodic leakage rate testing of the packagings, without compromising safety, reduces radiation exposure to workers and cuts annual operating costs by $2,500–3,000 per package.