
Map of tsunami wave height; click for source
The twists and turns wrought by the Japan earthquake have gripped and troubled me. I am by nature, and to some extent profession, a contingency planner. When faced with a difficult situation, I tend to switch into a pattern-recognition and problem-solving mode, anticipating consequences in order to take advantage of them. The Japan earthquake is troubling because its medium and long term ramifications are very unsettling.
The facts are straightforward: the 9.0 magnitude earthquake that occured off the Sendai coast on 11th March was one of the most powerful ever recorded. It generated a massive and rapidly-arriving tsunami, leading to major loss of life and catastrophic damage. Several nuclear reactors at Fukushima are in danger of core containment breach, and at time of typing, there are reports of a minor containment breach at reactor 2. The Bank of Japan has pumped trillions of yen into the economy to prop it up during the crisis, and the emergency services and military appear to be doing the best they can under trying circumstances.
The consequences are much harder to define.
The loss of life is of course immensely tragic on personal, national and global levels. However, the calculating side of me is bound to point out that on that global scale (comparing it to previous natural disasters such as Haiti’s earthquake) it is not disproportionate.
Many tens of thousands (probably hundreds of thousands) of lives were undoubtedly saved by Japan’s affluence. Its wealth enabled adherence to strict building codes, making deaths from the earthquake itself relatively limited. This is a triumphant testament to technology and its careful widespread implementation.
The tsunami killed many more. It is much harder to prevent tsunami deaths. One would assume that Japan will respond by implementing more safety restrictions into its building code for coastal properties, such as mandating the orientation of buildings to permit the force of tsunami waves to pass through rather than destroy. These would be relatively straightforward regulations and I have little doubt Japan will respond well in this regard.
The economic consequences are more painful. Natural disasters are generally associated with an immediate GDP hit, followed by a rebound 6-18 months later as reconstruction kicks in. Under normal circumstances, Japan would follow this overall neutral pattern (as it did following Kobe’s earthquake). But Japan’s national debt is enormous at about 200% of GDP, and interest rates are already in the basement following decades of stagnation and the 2008 financial crisis. This limits economic room for manoeuvre and magnifies the impact of that short-term GDP hit, making it more likely to be prolonged. If Japan’s GDP is negatively affected for more than 6 months, it may trigger a global slowdown. Although it has been stagnating for 20 years, Japan is still the world’s 3rd biggest economy and a major recession would impact global demand chains.
This is particularly concerning for the UK, given that the success of the austerity programme being implemented by the coalition government is dependent on moderately strong private sector growth. Direct UK-Japan trade is in the order of about £10-20bn only, so although knock-on effects via the USA are harder to quantify, it’s possible that the fallout to the UK economy will be relatively contained. It’s simply too early to be sure about the impact on the UK beyond noting that several large insurers will bear major, but largely absorbable, losses.
Fallout of another nature is perhaps more troublesome in the long term. It’s highly unlikely that radiation from Japan will cause the UK any problems whatsoever. Even within Japan, the impact should hopefully be fairly limited, especially if the cores at Fukushima do not lose further containment. But the effect on our energy policy may be significant.
Elements of the Green movement have been swift to use the incident to buttress their more generalised anti-nuclear policies. While some environmentalists now support nuclear power as being cleaner than coal or oil, and therefore helpful in mitigating climate change, the majority still push very strongly against an expansion of fission plants. Public opinion has gradually been shifting back towards nuclear power in the decades since Chernobyl, but this progress is likely to be reversed in the emotional knee-jerk response to what we are seeing unfold in Japan. The longer it takes to control the cores, the worse that response is likely to be.
No method of power generation is risk and impact free, but nuclear is in many ways safer, cleaner and more cost-effective than other methods. It has some major drawbacks of course, not least that if all the lines of defense do collapse, then the consequence of a fully exposed core are very significant. Nuclear power stations are designed with significant depth of defense and I hope and pray that the depth is sufficient to allow the Fukushima cores to be brought under control. Newer designs of plant are more defended still (Fukushima is about 40 years old), with passive as well as active lines of retreat in case of emergency.
While it is absolutely right that nuclear plants should be designed with the precautionary principle uppermost in mind, I believe it is fundamentally wrong to construct an entire energy policy around such worst-case scenarios. Any energy policy has to be balanced not solely against the risk of incredibly unlikely catastrophe, but against the far more likely effects on the economy, and the need to securely keep the lights on.
Britain is a much more geologically stable country, and with newer reactor designs, I firmly believe that nuclear power is easily a safe enough option. It is also going to be necessary in order to maintain power grid stability in the face of our international obligations to mitigate climate change. Renewables alone simply cannot fill the gap in the short time we have. I hope there isn’t a knee-jerk response against nuclear fission’s planned expansion in this country.
Of course, a more lasting solution would be cost-effective large-scale nuclear fusion, and there is a very strong international effort to develop the technology required, which I touched upon in an earlier entry. That would be both cleaner and safer than fission.
National disasters can paradoxically bring out the best in people. All the reporting from Japan conveys images of an understandably shocked and frightened populace, but one attempting to work with authorities to rebuild their country. Having visited and worked there, I believe they will succeed.
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