3. A screwdriver to avoid critical mass (it didn’t pan out)

A screwdriver to avoid critical mass (it didn’t pan out)

the photo is interesting but useless to those not already aware of the incident, dude.

https://en.wikipedia.org/wiki/Louis_Slotin#Criticality_accident

At 3:20 p.m., the screwdriver slipped and the upper beryllium hemisphere fell, causing a "prompt critical" reaction and a burst of hard radiation.[8] At the time, the scientists in the room observed the blue glow of air ionization and felt a heat wave. Slotin experienced a sour taste in his mouth and an intense burning sensation in his left hand. He jerked his left hand upward, lifting the upper beryllium hemisphere and dropping it to the floor, ending the reaction. However, he had already been exposed to a lethal dose of neutron radiation.[1]

https://commons.wikimedia.org/wiki/File:Tickling_the_Dragons_Tail.jpg

Recreation (simulation) of the Slotin incident of "tickling the dragon's tail" which shows the configuration of beryllium reflector shells prior to the criticality. Taken from http://www.csirc.net/docs/reports/la-13638.pdf. Public domain Government image

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I'm not an electrician, but I'm pretty sure this guy is supposed to be locked. No city or power company employees in sight Costco's replaced the fire extinguishers with these 9 stories up and my coworker keeps on stepping across these 2 foot gaps Your day is almost certainly going better than this guy's No plug? Just jam the wire in the socket and make sure you use a couple of sticks to make sure the wire doesn't fall off No comment needed Load secured! I really don't understand why people pay for grounding so much How to open a blast door at the bottom of a pit with 250 tons of water behind it using only two guys, a bar and an excavator If you listen carefully, you can hear a safety officer screaming at their computer watching this. (x-post /r/gifs) How do I get a copy of my incident report?? This is our only exit other than the front door at work. We keep asking the boss to move it and he says no. Been there over 6 months. We sometimes wonder which of the 30 of us would make it out of the fire. Sleeping on the job is just plane wrong Sleeping on the job is just plane wrong Figure 6: Clean Work Area.

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