I've got your meltdown right here
By Colby Cosh - Monday, March 14, 2011 - 26 Comments
Like some of you, I’ve been trying to follow the post-earthquake events at the nuclear facilities in Japan’s Fukushima Prefecture. This effort has been both reassuring and infuriating. The bottom line at this moment appears to be that, despite worst case being heaped upon worst case, the design of the containment apparatus of the Fukushima power plants has successfully prevented any danger to the Japanese populace.
Indeed, one is forced to conclude that we have witnessed a demonstration of the near-impossibility of public danger from nuclear power plants of this type. This facility is situated in what we would be tempted to call the stupidest possible place—though densely populated Japan does not have much choice in the matter. An earthquake of the magnitude of March 11′s was literally considered impossible by seismologists, and the plants were not built to survive it. (Some, in fact, will certainly not survive as power-producing assets; where there has been partial meltdown or cooling by unfiltered seawater, the economic value of the cores will have become zero—minus the cleanup cost—almost immediately.)
When trouble came, the onsite generators that are supposed to circulate coolant in an emergency had been wiped out by the tsunami, and mobile backup generators rushed to the scene could not be hooked up because of flooding. (Who could have seen that coming after a tsunami?) As a consequence of the resulting heat buildup, hydrogen started exploding all over the place—presenting no apparent threat to the integrity of the containment vessels, but quite a significant one to the integrity of emergency responders’ bodies.
It’s a frustrating sequence of events to behold, and it has been made more so by the poor crisis management of the Tokyo Electric Power Co. (TEPCO) and the Japanese government. A serious nuclear incident is the whole world’s concern, and TEPCO and Japan have an obligation to explain to the world just what has happened. But English-language reports from the state broadcaster, NHK, have been shockingly feeble and confused. TEPCO’s press releases, meanwhile, are masterpieces of indecipherable technical and even legal jargon. (“As the reactor pressure suppression function was lost, at 5:22am, Mar 12th, it was determined that a specific incident stipulated in article 15, clause 1 has occurred.”)
The global public has been left to figure out for itself what to make of hazy videos of nuclear power facilities exploding. What little context we can assemble, as we try to interpret such a mortifying sight, arrives mostly in shreds provided by Western oracles—ones who, in their turn, seem to mostly be working from supposition and indirect evidence, and who may not be particularly independent from the nuclear industry.
No one should forget, while trying to make sense of what’s happening in Japan, that something like 300 people died in major coal mining accidents around the world in 2010 alone. None of those accidents involved natural disasters, and probably not all of them even involved culpable human error. We just accept a certain quantum of mortality as the cost of keeping the lights on—when it comes to every means of power generation, that is, except nukes. A death toll in the single digits from the Fukushima troubles would represent an amazing triumph of design robustness. (Especially if we judge the quality of Japanese engineers and regulators by their competence at communications.)
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Look out below!
By Kate Lunau - Thursday, June 25, 2009 at 8:40 AM - 1 Comment
A new telescope system will keep watch for killer asteroids from space
In 1908, the skies over Siberia lit up in a sudden and massive explosion: an asteroid, 40 m wide, had entered earth’s atmosphere and was breaking up in a multi-megaton burst. Although the asteroid itself didn’t make it to the ground, the shock wave and massive fireball that resulted destroyed 2,000 sq. km of forest, laying waste to the ground below. The Tunguska Event, as it’s called, took place in a remote area, so no human lives were lost. If the blast happened over Toronto, London or Shanghai, it would be another story.Thousands of asteroids, most of them untracked, swarm around our planet; some are over 10 km wide. “Right now, the most probable amount of warning we’ll have for an asteroid impact is zero, because we don’t know where most of them are,” says Robert Jedicke, 46, a University of Hawaii astronomer originally from Niagara Falls, Ont. Jedicke is part of a team at UH’s Institute for Astronomy that’s working to change that. A new program, called Pan-STARRS, will combine the world’s most powerful asteroid-tracking telescope with the largest digital camera ever built. The first of four planned telescopes is set to begin its full scientific mission any day now. “In the past 200 years, we’ve discovered half a million asteroids,” he says. The first telescope alone “should find a comparable number in a single year.”














