Life Support Systems Safety
key requirement of the long-term health and safety of personnel
on the International Space Station is ensuring a sustainable living
environment. One of the vital parts of the Advance Life Support
Systems is the production of breathing oxygen for the crew. Makel
Engineering is a major subcontractor to Hamilton Sundstrand on
the Water Processor/Oxygen Generator (WP/OG) for Node 3.
Engineering has developed a hydrogen sensing system that monitors
the hydrogen levels in the space station’s oxygen regeneration
system. The hydrogen sensor orbital replaceable unit (ORU) consists
of a triple-redundant sensor package which measures hydrogen in
oxygen background with high humidity levels. The ORU warns the
safety systems well before hydrogen reaches explosive levels in
the oxygen lines, enabling proper handling of the potential hazard
and avoidance of accidents.
Engineering’s hydrogen sensing system, utilizes three sensors
working in parallel to provide the system a constant reading of
current hydrogen levels. As part of this ongoing program Makel
Engineering will provide service and support for these triple
redundant units. The systems will return from the station to Makel’s
calibration lab for regular recalibration - insuring the accuracy
and reliability of the system for years to come.