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The world’s cleanest railway

Tom Scott | October 13, 2024



At CEA-Leti, in Grenoble, there’s a “funicular” that not many people get to ride: because it’s between two clean rooms, and getting to it requires quite a lot of preparation. ■ CEA-Leti: https://www.leti-cea.com/cea-tech/leti/english/Pages/Welcome.aspx

For most of my research on this, I’m indebted to this French-language article from by Julien Meyrat: https://www.vepres.fr/vepres-presse-salles-propres-funiculaire/

Camera: Simon Gillouin
Editor: Michelle Martin https://www.youtube.com/@OnTheCrux
Local production by Block8 https://block8production.com

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Written by Tom Scott

Comments

This post currently has 38 comments.

  1. @Bombiedude.

    October 13, 2024 at 12:45 pm

    Thats funny how you operate that tram like an elevator by just pushing 2 buttons the one to bring it over to your location and the go button but just sideways instead of vertical

  2. @dieseldragon6756

    October 13, 2024 at 12:45 pm

    Another (Maybe less obvious) benefit of using a funicular for this is that if one of the cleanrooms becomes compromised (i.e: Contaminated air is admitted) the other room still remains clean, whilst a corridor would allow contaminated air to pass between them if airlocks weren't used. 🌬🛡💨👍

    Mind you, did anybody else think that funicular seemed a little bit rattly for a vehicle that presumably carries extremely sensitive equipment on a fairly regular basis? 🚞〰😇

  3. @gloodgy2774

    October 13, 2024 at 12:45 pm

    I worked as a janitor for a company with clean rooms, let me tell you, it was not fun. I would have to put on or take off all that stuff about 10 times each shift. And every day I had the exact routine of thoroughly cleaning everything

  4. @heatherduke7703

    October 13, 2024 at 12:45 pm

    It's always amusing to me how the French in your videos always insist on speaking English… I would much rather hear it in French, but the French's overconfidence in their English knows no bounds 😅

    I tried to teach English in middle school and high school outside of Paris, and unfortunately the kids will make fun of each other for making an effort to speak well 😕

  5. @iflexy.

    October 13, 2024 at 12:45 pm

    I don't understand the comparison between the surgical theatre where it has 100 times more particles in the air while the cleanroom has 1m times more particles in the air, is more particles = less clean?

  6. @RayenTrail

    October 13, 2024 at 12:45 pm

    So, I work hospital pharmacy. we measure the level of cleanliness in terms of "ISO" (so the hood where we make drugs is the cleanest and it's ISO 5, the room around it is ISO 7, etc) what is the ISO certification of the room if it is measured that way?

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