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Desc:cheery 50s edufilm about removing bodies from a nuclear reactor accident.
Category:Accidents & Explosions, Military
Tags:Nuclear Reactor, SL-1, atomic reactor, lead caskets for everyone!
Submitted:SolRo
Date:01/22/14
Views:1564
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Comment count is 7
RockBolt - 2014-01-22
Since it doesn't really go into it, what happened was the operators were supposed to manually remove the control rod a few inches to re-attach it to the mechanical mechanism that moves it in normal operation (it was disconnected for shutdown and maintenance of the reactor), instead they removed it like 2 feet. This caused the reactor to go prompt critical and flash boil all the water in a few milliseconds. This steam explosion deformed and launched the reactor vessel and all the hardware on top into the air. The operator that was originally standing over the reactor was impaled (groin to shoulder) to the ceiling with a shield plug. They all died from trauma from the explosion, but the radiation would have done it too.

The (now obvious) change in reactor design that came from this was that no one rod, even when fully removed or stuck in the withdrawn position should cause an unstoppable chain reaction. Although even at this time most reactors didn't have such a flaw, but the SL-1 was designed as a relatively small reactor for remote arctic radar installations and things, not a commercial power generator, which is why it lacked any kind of real containment building or extensive infrastructure- the components needed to be simple and standard, able to be air lifted and minimal construction to put it together.
Oscar Wildcat - 2014-01-22
The line of instruction in the operations manual prolly read:

x) Remove control rod 2"

and those little quote marks were so close together...

Doh!

SolRo - 2014-01-22
The even longer version in related videos has the ferensic reconstruction video tacked onto the end.

Reactor was designed to run at about 3 megawatts. With the rod removed 18 inches too far, it ran at some 20 GIGAwatts until it melted and exploded at the same time.

godot - 2014-01-23
...a third man, lodged in the ceiling, also dead...

Meerkat - 2014-01-22
IT CAME FROM OUTER SPACE
Cube - 2014-01-23
I watched the longer version.

There's just something fascinating about this era. Not only the scientific discoveries, but also the way these old films look and sound. No wonder it's been a plentiful source of ideas for movies, tv and video games.
Cube - 2014-01-23
Also took a while to realise the "rentgins" he talks about all the time are Röntgens.

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