[SystemSafety] Uranium+seawater -> Yellow substances?

[Peter Bishop]

Also used for coloured glassware

https://www.orau.org/ptp/collection/consumer%20products/vaseline.htm


On 24/07/2017 20:01, Steve Tockey wrote:
> 
> Several Uranium compounds are called ³Yellowcake² for exactly that reason:
> 
> https://en.wikipedia.org/wiki/Yellowcake
> 
> 
> 
> By the time Uranium goes into a reactor it is usually in Uranium Dioxide
> form and is a charcoal color.
> 
> 
> Depending on how long the reactor was used for power production, and
> depending on how much fission went on during the meltdown, there will be
> amounts of mixed fission products: Strontium, Cesium, Cobalt, . . . Those
> could be of any color, depending on chemical form. Cobalt blue, anyone?
> 
> 
> Uranium has been used as a coloring agent, particularly in a popular line
> of ceramic dinner ware, to get reds and oranges:
> 
> https://en.wikipedia.org/wiki/Fiesta_(dinnerware)
> 
> 
> Somewhere in my archives I have a shard of an orange Fiestaware plate that
> is measurably radioactive.
> 
> 
> ‹ steve
> 
> 
> 
> -----Original Message-----
> From: systemsafety <systemsafety-bounces at lists.techfak.uni-bielefeld.de>
> on behalf of andy <loeblas at comcast.net>
> Date: Monday, July 24, 2017 at 9:18 AM
> To: 'Derek M Jones' <derek at knosof.co.uk>,
> "systemsafety at lists.techfak.uni-bielefeld.de"
> <systemsafety at lists.techfak.uni-bielefeld.de>
> Subject: Re: [SystemSafety] Uranium+seawater -> Yellow substances?
> 
> I believe that uranium products at various stages of the refining process
> are yellow.  Depending on temperature, which is not consistent throughout
> the melt substance, and due to mixing of other metals and materials in the
> melt, it would seem that many colors would be evident and that also is
> confused by the amount and quality of light in water as well as perhaps the
> mineral content of the water when the melt was formed.
> 
> -----Original Message-----
> From: systemsafety
> [mailto:systemsafety-bounces at lists.techfak.uni-bielefeld.de] On Behalf Of
> Derek M Jones
> Sent: Monday, July 24, 2017 11:29 AM
> To: systemsafety at lists.techfak.uni-bielefeld.de
> Subject: [SystemSafety] Uranium+seawater -> Yellow substances?
> 
> All,
> 
> I seem to recall that Uranium minerals are sometimes bright yellow.
> But TV arts programs (as in pictures) programs not be a reliable source of
> information on Uranium:
> 
> https://www.theregister.co.uk/2017/07/24/robot_snaps_photos_inside_fukushim
> a
> _nuclear_plant/
> 

-- 

Peter Bishop
Chief Scientist
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