this post was submitted on 04 Jul 2023
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[–] [email protected] 70 points 2 years ago (7 children)

Fun fact, the static generated by gamma radiation actually looks a lot like confetti with random pixels and streaks of pixels turning blue, yellow, red, green or a combination in true random fashion. I know this because I used to perform visual inspections on nuclear reactors.

[–] [email protected] 17 points 2 years ago (6 children)

that's awesome. did you see cherenkov radiation?

[–] [email protected] 28 points 2 years ago (5 children)

Yes, but only from far away. The fuel bundles sort of glow like a blue light saber. Especially the "hot" ones right after we open the head of the reactor. I worked in various BWRs domestically and a few international. I spent many hours staring into the reactor glow from up on the refuel floor waiting for other work activities to finish up so I could do mine. It's mesmerizing to look at but it gets real burning after like 3 days.

[–] Int 2 points 2 years ago (1 children)

Does the amount of static picked up increase over time or does it stay relatively the same?

[–] [email protected] 5 points 2 years ago (1 children)

Scales directly with the amount of radiation present. Because the visual inspection happens in the water the radiation levels change a lot depending on where you are. Water is excellent as a radiation shield. I can't remember the halving distance (thickness of material needed to halve the radiation levels) but an active fuel bundle only needing 6 feet to drop down to safe levels is an insane drop. Something on the order of 1000 Rad/hr or something coming off the bundles.

[–] Int 1 points 2 years ago

Gotcha! I’ve always found it interesting how efficient water is at dispersing/shielding radio waves too. I believe light waves are also considered a type of radiation, but you only need a couple meters to completely block out [most] radio/ir/uv waves. Making wireless communication with things like drones or submarines very difficult.

Ty for the reply! This entire chain has been interesting.

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