NASA Universal Waste Management System and Toilet Integration Hardware Operations on ISS -- Issues, Modifications and Accomplishments



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51st International Conference on Environmental Systems


The Universal Waste Management System (UWMS), which has the ISS operational nomenclature "Toilet", was initially installed on the International Space Station (ISS) in 2020 with final installation completed in 2021. Although technical issues were encountered that delayed installation and operations, progress was made towards the objectives of the project. Technical issue work arounds resulted in operation of the Toilet with use by male and female crew members in a controlled extended checkout and a longer nominal use. This paper will summarize operations of the Toilet and Toilet Integration Hardware in both of those configurations, problems encountered during installation and checkout, the modifications made to allow further usage on ISS, and the future modifications planned for nominal use. It will also describe the portions of the technology demonstration that were completed and the benefits from that work and how that knowledge informs the Orion-installed UWMS unit and future manifesting of consumables for both Orion and ISS.


Melissa McKinley, NASA-JSC, US
Melissa Borrego, NASA, US
James Broyan Jr., NASA-JSC, US
ICES304: Physio-Chemical Life Support- Waste Management Systems- Technology and Process Development
The 51st International Conference on Environmental Systems was held in Saint Paul, Minnesota, US, on 10 July 2022 through 14 July 2022.


Waste Management, Life Support, Toilet