Showing posts with label radiation. Show all posts
Showing posts with label radiation. Show all posts

Sunday, April 8, 2012

California Fisheries Potentially Affected by Fukushima Radiation

A new report states that unusually high levels of radioactive iodine 131 have been detected in kelp off the coast of California.

From the San Francisco Chronicle (4/8/2012):


Scientists from CSU Long Beach tested giant kelp collected off Orange County, Santa Cruz and other locations after the March 2011 accident and detected radioactive iodine, which was released from the damaged nuclear reactor.
The largest concentration was about 250 times higher than levels found in kelp before the accident.
The study's authors suggest that the radioactive particles were brought across the Pacific from the Fukushima area by weather patterns. 

The San Francisco Chronicle article understates the threat that this discovery poses. 

From the Newport Beach Patch (4/7/2012):

Cesium 137 has a half life of 30 years, as opposed to iodine 131's half life of below 10 days, so it may be present in California kelp to this day, said Manley.
"We were limited in what our instrumentation allows us to do," he said. "The big question was, 'is another major isotope that came over in the cloud, cesium 137, present in the kelp, too?' "
...
Followup work showed varying amounts of low levels of radioactive cesium in seaweed from samples near UC Santa Barbara and UC Santa Cruz, the scientists said. No radioactivity was found in seaweed from Alaska.
So the article confirms that cesium has indeed been found off the coast of California. As the article indicates, cesium 137 has a half life of 30 years. This radioactive material is not only here, but will be here for the following three decades.

The article also notes that fish have a thyroid system system that utilizes iodine. The thyroid system regulates hormones. That means the unusually high levels of iodine may affect fish populations in ways we can't even predict currently.

More importantly, it means that these radioactive particles are now in the food chain. California fisheries produce much of the seafood consumed along the coast and transported to the inland parts of the U.S. One has to wonder whether these radioactive particles will eventually make their way into the human population and affect human thyroid systems as well.

As previously stated on this blog, 'developed world' governments have failed to fully account for the damage that the Fukushima accident caused and continue to understate the threat that this radiation continues to pose to human populations all over the globe.

Wednesday, April 4, 2012

Nuclear Policy Contradiction: Nuclear Drones in the Era of Fukushima

Nick Fielding, writing for The Guardian (4/2/12):

American scientists have drawn up plans for a new generation of nuclear-powered drones capable of flying over remote regions of the world for months on end without refuelling.

The blueprints for the new drones, which have been developed by Sandia National Laboratories – the US government's principal nuclear research and development agency – and defence contractor Northrop Grumman, were designed to increase flying time "from days to months" while making more power available for operating equipment, according to a project summary published by Sandia.
Luckily, for humanity:

A halt has been called to the work for now, due to worries that public opinion will not accept the idea of such a potentially hazardous technology, with the inherent dangers of either a crash – in effect turning the drone into a so-called dirty bomb – or of its nuclear propulsion system falling into the hands of terrorists or unfriendly powers.
 Meanwhile, elsewhere on planet Earth (The Economic Times - 4/3/12):

Scientists have found radioactive material from the crippled Fukushima nuclear reactor in tiny sea creatures and ocean water some 600 km off the coast of Japan, revealing the extent of the release and the direction pollutants might take in a future environmental disaster.  

...
Buesseler said the marine radiation levels are comparable to those seen after past accidents, such as Chernobyl accident in 1986.  
Are the leaders of the developed nations mad? Yes, Sandia Labs and Northrop Grumman have halted the project, which we are told was only a conceptual exercise.

Nonetheless, why are taxpayer dollars being spent on such a project? The U.S. is in serious economic distress. Fielding doesn't report on how much this conceptual exercise cost. Nonetheless, a look back at the huge budgets and huge cost overruns with past defense industry projects suggests to me that considerable resources were probably spent on this "conceptual exercise."

The whole project seems so risky and so potentially dangerous that it seems absurd to imagine that intelligent engineers and scientists were willing to spend more than a few seconds on this project.

Have they not been paying attention to the news from Fukushima? Including reports that Reactor 4 of the complex still poses a major meltdown threat. Or the blog chatter reporting on Japanese citizens who have been recording and documenting extraordinarily high levels of radiation in major cities. The world hasn't fully accounted for the fall-out (literal and metaphorical) from the Fukushima disaster. Despite the fact that it still poses a major environmental and health risk to a large chunk of the globe, it's rarely a major topic of discussion in the U.S. mainstream media as of April 2012. The disaster will have a major effect on Japan for decades.

Let's hope that Western leaders learn from the Fukushima disaster and rethink Western nuclear policy, with an emphasis on safety and long-term security.