NASA astronaut Nick Hague works on life support maintenance

iss059e061760 (May 15, 2019) --- NASA astronaut Nick Hague of Expedition 59 installs gas trap plugs inside the Tranquility module's Moderate Temperature Loop Pump Package Assembly. The gas trap plugs would slow an ammonia release through the gas trap vent hole in the event of an Interface Heat Exchanger breach and reduce coolant leakage during vacuum conditions at the International Space Station.