On 27/01/2020 08:41, The Natural Philosopher wrote:
On 26/01/2020 23:58, John Rumm wrote:
On 19/01/2020 15:28, Chris Hogg wrote:
On Sun, 19 Jan 2020 14:50:11 +0000, The Natural Philosopher
wrote:

On 19/01/2020 13:37, Chris Hogg wrote:

To power the UK for a day, just on electricity, in winter, takes about
24 hours at an average of 35Gw

= 840GWh

In terms of nuclear warheads, that is 722 kilotons. 50 Hiroshimas.


Would you rather live:

(a) near a nuclear power station that cannot explode, only melt down
inside a safe containment vessel?
(b) near a megaton explosion capable hydrogen store?

Note: a megaton explosion takes outÂ* about 100 sq km absolutely.

The explosive hazard of hydrogen is often advanced as a reason for not
going down that route,

People also seem to forget that petrol is dangerous stuff to handle
and yet we do that without a thought these days. At least if you
"spill" hydrogen it does not form ground dwelling puddle of highly
flammable vapour.


petrol is way less dangerous than hydrogen or natural gas.

the Hindenburg disaster being often quoted.

ISTR a former NASA hydrogen specialist wrote a book on that:

https://eu.floridatoday.com/story/ne...igs/101153648/

The hiundenburg disoater wasn't started by the hydrogen, but it sure
made a nice fire once it caught.

Being 100% hydrogen in the gas bags it burnt and didnt detonate.



I'd be much more worried by a massive Li-based battery nearby, than a
hydrogen storage facility.

I'd be worried by either.


I remember a guy disconnnecting a fast charger from a fork lift without
switching off the charger - the outgassed hydrogen/oxygen exploded when
a spark lit it. Battery was split in half.

I recall a GEC trails engineer who wrote off the payload of a 4 ton Army
truck, by leaving batteries on charge overnight its load space (which
was basically a sealed container full of high end mil spec electronics).
It ended up looking somewhat "puffed" following unintended ignition!


--
Cheers,

John.

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