Safety assurance of chemical self-contained power supplies for hardware and onboard equipment of the ISS Russian segment

Chemical self-contained power supplies (SPS) are widely used in the replaceable equipment and experimental hardware aboard the International Space Station (ISS). In the event of a failure aboard the ISS or transport vehicle SPS poses a serious hazard to the crew as chemical elements. Therefore, special measures are taken, and equipment/devices are used to prevent the SPS seal failure and electrolyte ingress into the atmosphere of the ISS pressurized compartments, on the crewmembers and hardware. The article describes the types of SPS used on the ISS Russian Segment, and the requirements placed on new types of SPS. The SPS qualification, verification and preflight test procedures are presented. The results of typical SPS qualification tests are provided.