Here I go again - nuclear waste costs spiral up, up and away

Posted by ben - 12 October 2007 at 3:08pm - Comments

By Ben, senior nuclear campaigner.

As a closet power ballad fan, when I heard that the taxpayers' bill for cleaning up our existing piles of nuclear waste is skyrocketing (according to the UK Nuclear Decommissioning Agency, or NDA), I couldn't help but think of hard rockin' übergroup Whitesnake's "Here I go again".

Almost every time the nuclear industry gives an estimation of their costs, whether it be for building reactors, pulling them down, storing waste or somehow disposing of it, they have this very predictable habit of spiraling higher and higher, usually in very short order.

In an article in the papers yesterday, the NDA say that the cost of cleaning up Britain's existing nuclear sites has risen by a whopping 16 per cent in the last year alone. They now reckon it will cost a staggering £73bn. And what's worse is that, because there are probably further costs to be added to this already not insubstantial figure, the final bill is likely to be up to £100bn. That’s nearly as much as the entire NHS budget. Just imagine what we could do in terms of renewables, decentralised energy and energy efficiency with all that cash. Yet Gordon Brown's latest wheeze is to build even more reactors and, presumably, leave the taxpayer to pick up that ever-increasing tab to clean up after them.

A plumber friend of mine pointed out that water expands when it freezes and that's why pipes burst.

Therefore it contracts when it thaws.

The ice caps have vastly more ice below the surface than they do above, therefore any thawing of the ice should create a lowering of sea levels not a rise.

You're right that when sea ice thaws, it contracts - but it won't lead to lower sea levels. When sea ice forms, it expands to 110% the volume of water - and that extra bit is the 10% you see at the top. So, when it melts (and that bit at the top sinks back into the water), sea levels stay exactly the same.

So the melting of sea ice at the North Pole doesn't directly affect sea levels. It does mean that the earth absorbs more heat from the sun instead of reflecting it though, and that means even more warming. From the National Snow and Ice Data Center:

Arctic sea ice keeps the polar regions cool and helps moderate global climate. Sea ice has a bright surface, so 80 percent of the sunlight that strikes it is reflected back into space. As sea ice melts in the summer, it exposes the dark ocean surface. Instead of reflecting 80 percent of the sunlight, the ocean absorbs 90 percent of the sunlight. The oceans heat up, and Arctic temperatures rise further.

Also, in Antarctica and Greenland, the ice is land ice - massive ice sheets that sit on land masses. As this is above sea level, the collapse and melting of this ice leaves us in very serious trouble indeed...

Cheers for the theory though :0)

Bex
gpuk

A plumber friend of mine pointed out that water expands when it freezes and that's why pipes burst. Therefore it contracts when it thaws. The ice caps have vastly more ice below the surface than they do above, therefore any thawing of the ice should create a lowering of sea levels not a rise.

You're right that when sea ice thaws, it contracts - but it won't lead to lower sea levels. When sea ice forms, it expands to 110% the volume of water - and that extra bit is the 10% you see at the top. So, when it melts (and that bit at the top sinks back into the water), sea levels stay exactly the same. So the melting of sea ice at the North Pole doesn't directly affect sea levels. It does mean that the earth absorbs more heat from the sun instead of reflecting it though, and that means even more warming. From the National Snow and Ice Data Center: Arctic sea ice keeps the polar regions cool and helps moderate global climate. Sea ice has a bright surface, so 80 percent of the sunlight that strikes it is reflected back into space. As sea ice melts in the summer, it exposes the dark ocean surface. Instead of reflecting 80 percent of the sunlight, the ocean absorbs 90 percent of the sunlight. The oceans heat up, and Arctic temperatures rise further. Also, in Antarctica and Greenland, the ice is land ice - massive ice sheets that sit on land masses. As this is above sea level, the collapse and melting of this ice leaves us in very serious trouble indeed... Cheers for the theory though :0) Bex gpuk

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