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From: Bill Sloman <bill.sloman@ieee.org>
Newsgroups: uk.d-i-y,sci.electronics.design
Subject: Re: OT: EV Charging Stations Stripped of Copper Cables
Date: Sat, 6 Jul 2024 15:08:07 +1000
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On 6/07/2024 1:06 am, The Natural Philosopher wrote:
> On 05/07/2024 15:34, Bill Sloman wrote:
>> On 5/07/2024 10:18 pm, The Natural Philosopher wrote:
>>> On 05/07/2024 12:36, Bill Sloman wrote:
>>>> On 5/07/2024 8:08 pm, The Natural Philosopher wrote:
>>>>> On 05/07/2024 10:38, Martin Brown wrote:
>>>>>> On 04/07/2024 17:18, Jethro_uk wrote:
>>>>>>> On Thu, 04 Jul 2024 14:11:54 +0000, Smolley wrote:
>>>>>>>> On Thu, 04 Jul 2024 21:55:59 +1000, Bill Sloman wrote:

<snip>

>>>>> They could build a pyramid and stuff it in that., It would be safe.
>>>>
>>>> In your ever-so-well-informed opinion.
>>>
>>> Yes. In my ever so well informed opinion.
>>> The pyramids have been up and stable longer than ten half lives of 
>>> any radioactive isotope crated in a reactor'
>>
>> The oldest pyramid was completed around 2650 BC so it been up for 
>> about 4,600 years.
>>
>> https://en.wikipedia.org/wiki/Pyramid_of_Djoser
>>
>> https://en.wikipedia.org/wiki/Long-lived_fission_product
>>
>> The seven long lived fission products have half-lives ranging from 
>> 211,000 years ( Technicium-99) to 15.7 million year (Iodine-129).
> 
> Completely wrong The oldest fission products are uranium and thorium 
> with half lives in billions of years.

Uranium is what you put into reactor - it's not a fission product.
There are neutron flying around inside a reactor, and a neutron hitting 
a uranium nucleus doesn't necessarily cause it to fission but can get 
capture, which is how some of the U-238 in a reactor gets turned into 
Pu-239. That isn't a fission product either.

I've not heard that U-235 fission reactors produce thorium. People put 
Thorium-232 into U-235 nuclear reactors to "breed" thorium-233 which is 
fissile.

> Iodine 129 et al are so un-radioactive you could bathe in them and be 
> just fine.

Iodine-129 with it's 15.7 million year half-life, doesn't decay to 
Xenon-129 all that often, and it only emits a 194KeV electron (beta 
decay) in the process.

But you don't want to bathe in it. Iodine concentrate in the thyroid, 
and any 194keV electron can mess up your DNA. Shorter-lived radioactive 
isotopes of iodine are used to shrink over-active thyroid glands. 
There's a cancer risk, but not a large one, and hyper-thyroidism is 
disorder that it pays to treat.
>> https://en.wikipedia.org/wiki/Long-lived_fission_product
>>
>> So you've made yet another ludicrously false claim.
 >
> No you have. No one except you is in the slightest bit concerned about
> Inert materials like that. You are more at danger from lead poisoning, 
> which lasts FOREVER.

Wrong again.

>>>>>> We in the UK should give thanks to Cockcroft's follies. We were 
>>>>>> damn lucky that his somewhat wacky stack filter idea prevented 
>>>>>> massive fallout when the carbon moderator caught fire back in 
>>>>>> 1957. Radioactive discharge would have been ~20x worse without them.
>>>>>>
>>>>> Not even as bad as Chernobyl, which was the same without the 
>>>>> filters and 100 times bigger
>>>>
>>>> Not remotely similar, as you would have been able to work out of you 
>>>> had read the link below.
>>>>
>>> Almost identical, in that a carbon fire in an unenclosed reactor 
>>> spread nuclear material around. I know ALL about BOTH accidents . I 
>>> read ALL the literature
>>>
>>> And more importantly, I understood it.
>>
>> Or think you did. The problem in the in the Chernobyl reactors wasn't 
>> just a carbon fire - while they did use some graphite moderator 
>> elements, and these did catch on fire - but a control failure which 
>> lead to a much higher fission rate than the cooling system could cope 
>> with, generating enough steam to blown the structure apart.
> 
> Really you must be a relative of  Commander Kinsey.

The Scottish Wanker? Your grasp of reality really is remarkably frail.

-- 
Bill Sloman, Syndey



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