Tuesday, September 30, 2025

Lawrence Livermore National Laboratory world’s heaviest door

 


12 comments:

  1. That's not Lawrence Livermore, that's ENCOM!

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  2. located at National Institute for Fusion Science. Toki, Gifu, Japan.
    chestnut

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  3. The heaviest door in the world, according to Guinness World Records, is the radiation shield door at the National Institute for Fusion Science in Toki, Gifu, Japan.
    This massive door weighs 720 tonnes (approximately 1,587,328 pounds), measures 11.73 meters (38 feet 6 inches) in height, 11.4 meters (37 feet 5 inches) in width, and is 2 meters (6 feet 7 inches) thick.
    It was installed in December 1994 by Itoki Co. Ltd. and is designed to protect the outside world from the intense radiation generated within the fusion research facility.
    While other large doors exist, such as a 97,000-pound (44-tonne) hinged door at Lawrence Livermore National Laboratory in the United States, which was once considered the heaviest, the Japanese door holds the official record.

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  4. That is a door serious about keeping something either in or out...

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  5. At first glance, I was going to say that the blast doors at the NORAD facility on Chyanne Mountain in Colorado Springs might be heavier, but the Japanese Fusion Science building takes the cake.

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  6. I wonder if it has a Ring Camera doorbell.

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  7. Is that to keep the 'bottled sunshine' in or out ... asking for a friend...

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  8. Why have such a door?

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    Replies
    1. To keep the Japanese citizens living nearby from being nuked if an accident might occur. Unlike the Russian, nuke disaster in Chernobyl.

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  9. Actually, the heaviest door is my bedroom door when I come home from drinking with the guys.

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