Fallout from Fukushima
Hugh Pennington
The media are giving as much attention to the Fukushima I nuclear power plant as they are to the impact of the tsunami, even though the likelihood of measurable health effects from the former is small, and the number of deaths caused by the latter is certain to be very large. This isn’t surprising: nuclear fear, founded on Hiroshima and Nagasaki and reinforced by Three Mile Island and Chernobyl, is not irrational, though it’s worth noting that many more people have been saved by X-rays and radiotherapy than have been killed by radiation of any kind.
What’s happening at Fukushima Dai-ichi Units 1 and 2 is similar to what happened at Three Mile Island Unit 2 in 1979. The Three Mile Island light water reactor scrammed eight seconds after a pump failure. (SCRAM stands for 'Safety Control Rod Axe Man': Norman Hilberry stood with an axe on top of the first nuclear reactor, at the University of Chicago in 1942, ready to cut the rope holding the control rod if radioactivity ran amok.) The Fukushima light water reactors 1, 2 and 3 scrammed automatically in response to the earthquake (reactors 4, 5 and 6 were already shut down for maintenance). Scramming reduces a reactor’s heat production by more than 92 per cent, but heat from radioactive decay means that cooling is still needed.
At Three Mile Island, valves failed; at Fukushima, the problem was with diesel-powered cooling water pumps. At Three Mile Island, the massive onslaught of alarms overwhelmed the operators, measurements were misinterpreted and half the reactor core melted. Water reacted with hot fuel casings to produce hydrogen, which escaped into the containment building and ignited. But the reinforced concrete building, which was designed to withstand a plane crash, was unbreached. At Fukushima, each of the sturdy containment buildings is surrounded by a much flimsier structure. The explosions were probably caused by plant operators releasing hydrogen from the containment buildings to relieve the pressure.
Most studies have found that the negative health effects of Three Mile Island approach zero. But the accident did lasting damage to nuclear power’s reputation, already low – in 1973, E.F. Schumacher wrote that nuclear power is 'the most serious agent of pollution of the environment and the greatest threat to man's survival on earth' – and Fukushima has dented it even further. The hard task for politicians is to square nuclear fear with anxiety about the imminent threat of climate change.
Comments
The other point I would make is that the owners of nuclear power plants are very quick to suppress any reports of the incidence of radiation diseases in the neighbourhood of power stations. Can we justify risking the health of people who happen to live in the neighbourhood?
I won't even start on the question of what to do with the nuclear waste, or who pays for the scrapping of old power stations. There's a dump near Wolfenbüttel in Germany in which thousands of rusting, rotting canisters containing 'weak' radioactive substances' which will have to be put somewhere else at a cost of Billions. Some system!
I can't help thinking about Adam Curtis' documentary on nuclear power, part of his "Pandora's Box" series, made in the 90's. The nuclear scientists and engineers interviewed made it pretty clear that it was politicians' and corporations' obsession with size and economies of scale that led to the building of monster nuclear power plants that simply can't be made as safe as, say a gas fueled one. The complexity of the systems involved is such, that no amount of redundancy can ensure that a serious accident will not happen.
But more than one engineer said that small reactors of the kind used in submarines (up to 60 MW, I think) are pretty safe. The French , British and US navies have been using them for close to half a century in hundreds of vessels without having to face a crisis comparable to Three Mile Island, let alone a Chernobyl.
Yet the problem of what to do with the depleted uranium remains, and as long as it isn't solved, then it is difficult to see nuke power becoming acceptable to the masses in the near future.
* Here's a detailed but pretty accessibly discussion of what happened (and could happen) in Fukushima:
http://counterpunch.org/makhijani03142011.html
I like the idea of lots of small stations; but would they, for political reasons, have to be grouped together in a small number of places? And would that matter?
I think that most of us arguing for nuclear power don't want it in itself, it's just that the prospect of global warming makes us a lot more frightened.
It is also faulty logic to say that nuclear power is going to save us from global warming, that it's the best alternative to burning fossil fuels. Nuclear power only prevents the earth from being uninhabitable until enough accidentally-released radiation has accumulated. It looks more promising to some people, maybe, because the rate of accumulation isn't predictable and a huge catastrophe hasn't happened yet. Yet nobody can guarantee it won't happen. The best way to reduce global warming is to reduce the amount of energy consumed.
Joe, bear in mind that there's no authority that can tell Japan not to build nuclear power plants because they live in an earthquake zone. The greater insanity for the Japanese government has always been having an economy that's completely reliant on foreign oil. This is the paradox that needs to be resolved.
I'm not as pessimistic as Lovelock; my hope is that after a few more extreme weather incidents ('Nature' on 16/2/11 published two papers suggesting the UK floods in 2000 were caused by warming - i can't link to it because their site's having problems but here's a summary), we will realize what we're facing and do something.
There are many downsides to nuclear but we are nowhere near making the planet uninhabitable throu' accidentally released radiation; in fact, hardly anyone has been harmed by it when compared to those who have died and are dying to bring us our energy today. Nuclear energy can't save us on its own, but it may very well be part of our only hope. I'm reminded of the moment when T. E. Lawrence, having just crossed the 'uncrossable' part of the Sahara, was supposedly told by an NCO that he couldn't drink from that well because it was contaminated, and he replied 'The last water i drank had a dead sheep in it'. If things are as desperate as most climatologists seem to think, we are in no position to quibble about things that might go wrong.
Joe, I don't understand why someone who's as concerned about global warming as you wouldn't be worried by the headlines in today's Guardian:
Attempts to cool down reactor suffer early setback
• Head of US nuclear regulator calls for wider exclusion zone
• European Union energy chief says Fukushima plant 'out of control'
* Britain joins countries urging their citizens to leave Tokyo
* US and Europe voice fears of Japan mishandling crisis
Without providing any evidence Hugh Pennington says the likelihood of measurable health effects from Fukushima is small. Let's hope he's right, then we'll be safe until next time something unexpected happens.
I'm all for thinking again, as Geoff urges below, and if anyone has got a solution to climate change that doesn't involve nuclear energy and has any chance of being realized in a world addicted to energy, i'd love to hear it and if persuaded will shout its merits from the rooftops.
In this article by Murray Sayle in the LRB 2001 he describes the earth before the carbon that we are now putting back into the atmosphere was taken out "Both Poles were denuded of ice; the climate, perfect for giant swamp ferns, would have been unbearably hot and humid for humans, the atmosphere unbreathably contaminated with methane and carbon dioxide."
As i've said, i don't like idea of nuclear energy; but i like the idea of the above a lot less.
of course by now the stunning hubristic arrogance of the opening sentence of this blog entry could perhaps be excused due to unfortunate timing and sheer bad luck. But isn't that exactly the point? Nobody knows, least of all the 'authorities', scientific, political or otherwise, touted by the elites. On Sunday the Japanese variant of these august authorities was assuring its populace that everything was under control, and that any minimal radiation risk can be avoided by placing a wet towel over your nose. A classic black swan. Or is it? Perhaps it was after all entirely forseeable that a short-term energy fix that involved such risks (to say nothing of the hazards of storing its waste for hundreds if not thousands of years) was a museum-quality illustration of the hubristic arrogance of western scientific thought in general. Think again, o wise men....
A quote from the BBC today:
Professor Gerry Thomas, the director of the Chernobyl tissue bank from Imperial College London, says too much emphasis is being put on the nuclear issue. "I think we're getting an accurate picture as far as the radiological alarm is concerned. What concerns me most is that we're actually focusing on the wrong disaster. The real disaster is the tsunami and the number of people who've lost their lives that way. We're focusing on a disaster that isn't a disaster."
It isn't EITHER focus on the tsunami ("and if you don't you're a heartless bastard" is the implication) OR focus on the nuclear meltdown, it's possible to do both if you want to. For my part, rather than watch bodies being recovered, I prefer drawing attention to the fact that nobody can contain a meltdown in a nuclear power plant.
Professor Thomas has some expertise on thyroid cancer so she might be expected to know about a paper in the European Journal of Cancer (May 2001) showing a significant increase in the incidence of thyroid cancer after the Chernobyl accident. In Cumbria, the area receiving the heaviest fallout in the UK reported up to 40 kBq/sq.metre, the increase in incidence was much greater (more than 12-fold). The fact that Cumbria had some contamination levels at 40 kBq/sq.metre means that it was within Nick Ross's questionable definition of where the radioactivity settled.