[SystemSafety] Uranium+seawater -> Yellow substances?

[Les Chambers]

... And speaking of things radioactive, my hometown Brisbane is currently
hosting the US aircraft carrier Ronald Reagan. These visits, while being
most welcome, are of course redolent with risk. Take 4000 sailors hitting
Brisbane's pubs and clubs - with their limited capacity, and then there are
the jellyfish. The Brisbane River hosts a particularly nasty anti American
variety of jellies that fouled the Ronald Reagan's condenser cooling water
intakes on its last visit to Brisbane. The rumour was it almost caused an
evacuation of the ship (not confirmed). Which all goes to show, we're nice
guys but behave yourself or will set the jellies on ya.
Les

-----Original Message-----
From: systemsafety
[mailto:systemsafety-bounces at lists.techfak.uni-bielefeld.de] On Behalf Of
Steve Tockey
Sent: Tuesday, July 25, 2017 5:01 AM
To: andy; 'Derek M Jones'; systemsafety at lists.techfak.uni-bielefeld.de
Subject: Re: [SystemSafety] Uranium+seawater -> Yellow substances?


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/

-- 
Derek M. Jones           Software analysis
tel: +44 (0)1252 520667  blog:shape-of-code.coding-guidelines.com
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