Around 11 liters of water leaked into the International Space Station (ISS) during work to prepare for the future installation of the Urine Transfer System (UTS). Although the incident was minor compared to the more worrying pressure leak caused by a hole in the since-departed Soyuz MS-09, it once again highlights the day-to-day maintenance required on the orbital outpost that will play into lessons learned ahead of crewed deep space exploration.
The leak occurred during HMU 267 Power Cable Re-Routing task, which is a required operation to prepare the Station for the installation of the UTS later this year.
Crewmembers were required to re-route the HMU 267 power cable under the Treadmill 2 (T2) Rack. However, in order to accomplish this, the WHC Kabin (the toilet) needed to be removed and the WHC Rack rotated out of the way.
Location of the WHC Kabin on the ISS
“While demating the QD (Quick Disconnect) that supplies potable water to WHC at the rack the crew reported a sticky QD that caused potable water to leak into the cabin,” noted L2 ISS Status Information.
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“Initial troubleshooting of the QD leak did not ...