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The mist that keeps the Tyne Tunnels safe

Tom Scott | May 26, 2026



At the Tyne Tunnels, I get very wet and cold underneath a river… but not how you might expect. | AD: 🪒 Less razor burn, less waste, and 100 free blades: https://hensonshaving.com/tomscott | 🗺️ Series map: https://www.tomscott.com/england/

⚫ Tyne Tunnels: https://www.tt2.co.uk

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Written and presented by
Tom Scott

Producers
for Penny4 https://penny4.co.uk/
Cambria Bailey-Jones
Guy Larsen

Studio Associate Producer
Heloise Lowenthal

Studio Director of Photography
Jamie MacLeod

Studio Gaffer
Frank Hammond

Head of Post
for Breadbox Studios https://www.breadboxstudios.co.uk/
Mandy Celine

Associate Post Producer
Isla McTear

Senior Editor
Jamie MacLeod

Assistant Editor
Alex “J’Rassic” Bate
Bethan Leadley

Sound Supervisor
Dan Pugsley

Sound Assistant
Maggy Apodaca

Subtitles by So Speedy https://www.sospeedy.co.uk/

With thanks to the Historic County Borders Project https://www.county-borders.co.uk/

Select imagery/video supplied by Getty Images

Executive Producer
Tom Scott

© Pad 26 Limited MMXXVI

Written by Tom Scott

Comments

This post currently has 30 comments.

  1. @jfwfreo

    May 26, 2026 at 6:34 am

    The whole "behind the scenes at some cool place the public doesn't normally get to see" genre of YouTube video is one of my favorites.

  2. @Mayurpaj

    May 26, 2026 at 6:34 am

    Same system is also used in ship engine rooms. We call it hyper mist system.

    When there is an unsuppressable Engine room fire we had co2 system which reqd. complete closure and evacuation of the space.

    And always a risk of killing someone due to CO2 due to not evacuating before activation.

    But with hypermist no such dangers and only need to fill the tank with fresh water to use again. CO2 system vessel need to go to port just to replace spent CO2 cylinders.

  3. @glypnir

    May 26, 2026 at 6:34 am

    I wonder if this will have any effect at all on a lithium battery fire? One hopes it will cool things down enough to protect people and tunnel structure away from the fire. I wonder if they’ve got a test tunnel somewhere that they’ve used to test a big lithium battery fire with the mist system. Also, of course, an oil fire. Would the mist cool things down enough, or would it just float the fire down the road.

  4. @joshuakarr-BibleMan

    May 26, 2026 at 6:34 am

    Bar is atmospheric, same root as barometric.
    1 bar is one atmosphere of pressure. 10 bar is the equivalent of ten atmospheres of pressure.
    150 bar is what you'd find deep underwater.

  5. @glennmcgurrin8397

    May 26, 2026 at 6:34 am

    @14:17 that's the same as most sprinkler systems, they are not designed to put the fire out, just slow it and give time to evacuate and to a lesser degree responders to arrive. The only systems I normally hear of designed to actually put it out are the inert gas or similar systems.

  6. @Hesmos_

    May 26, 2026 at 6:34 am

    Donno why but the thumbnail looks so similar to MJ from thriller, like any second Tom's gonna start doing some fire dance steps.

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