The Tritium Systems Test Assembly (TSTA) was a facility dedicated to tritium handling technology and
experiment research at the Los Alamos National Laboratory. The facility was operated with tritium for
its research and development program from 1984 to 2001, running a prototype fusion fuel processing
loop with ∼100 g of tritium as well as small experiments. There have been several operating experience
reports written on this facility’s operation and maintenance experience. This paper describes reliability
analysis of two additional components from TSTA, small diameter copper gas piping that handled tritium
in a nitrogen carrier gas, and the flame arrestor used in this piping system. The component failure rates
for these components are discussed in this paper. Comparison data from other applications are also
presented.