Among several other classes, on Friday I had a review of the Internal Thermal Control System, in preparation of a water leak scenario that I will work on with the rest of the crew in the upcoming weeks.
Water is the medium with which excess heat is collected on ISS, either via cold plates on which equipment is mounted or via the air conditioning assemblies.
If a drop in water quantity in the cooling loop detected, the crew will be asked to try and pinpoint the leak. Unless there is an obvious loss of water into the cabin, finding a leak involves disconnecting one by one the various racks from the water lines so see if removing that rack from the loop stops the decrease of water quantity in the system… in which case we would have found the culprit!
At some point, though, if enough water is lost, that cooling loop will be shut down. Fortunately we have two cooling loops and we are able to ensure cooling to at least some critical hardware by “jumpering”, meaning inserting critical racks on the water lines of the healthy loop.
That involves a lot of manual reconfigurations, as you can see in the picture!
(Trad IT) Traduzione in italiano a cura di +AstronautiNEWS qui:
https://www.astronautinews.it/tag/logbook/
(Trad ES) Tradducción en español aquí:
https://www.intervidia.com/category/bitacora/
(Trad FR) Traduction en français par +Anne Cpamoa ici:
https://anne.cpamoa.free.fr/blog/index.php/category/logbook-samantha
20/10/2013