In 2000, a disused radiotherapy head containing a

Co source was stored at an unsecured location in Bangkok, Thailand and then accidentally was sold to scrap collectors. Unaware of the dangers, a junkyard employee dismantled the head and extracted the source, which remained unprotected for a period of days at the junkyard. Ten people, including the scrap collectors and workers at the junkyard, were exposed to high levels of radiation and became ill. Three of the junkyard workers subsequently died as a result of their exposure, which was estimated to be over 6 Gy. The source was safely recovered by the Thai authorities.

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This is a cut n paste from Wiki, but it was all around the industry at the time

Blue

Have you ever used Root Cause Analysis? I suspect you have.

Corrective action to prevent repetition can, in some cases, or indeed places, be a difficult concept for some to grasp.

"Listen lads, don't play with the shiny blue stuff eh, yes I know it looks nice and costs a shit load of money, but it really isn't a good idea to mess with it unless its under 5 mtrs of water really."

Is this a "radiotherapy head" ?

LeungKen, I think it might well be. Always good to see mains electricity in close proximity to running water anyway,