Oxygen Generation Assembly (OGA) fault tree analysis

The international space station has housed the OGA in active functioning since July 2007. During its operational timespan, the OGA has undergone several maintenance modifications for continued functioning of its systems. This study focusses on the system’s fault analysis with respect to maintenance time and frequency to obtain an insight on the number of maintenance hours required.

A future application of this type of study is imperative for long term deep space missions where system maintenance and failure prediction is crucial for mission planning. It sheds light on the list of tools and the specific spare parts that are needed for missions where resupply is either infeasible for uneconomical.