Radiation at Fukushima Spikes to Highest Levels Since 2011
Nearly six years after the initial explosion caused a catastrophic meltdown at the Daiichi nuclear power plant in the Fukushima prefecture of Japan, the situation has suddenly taken a drastic turn for the worst.
Tokyo Electric Power Company (TEPCO), the company which owns and operates the now defunct power plant, announced Thursday that radiation inside the containment vessel of one of the plant's failed reactors has now reached levels undetected since the disaster first occurred in 2011.
Radiation inside the reactor has reached 530 sieverts per hour, a drastic increase from the previously recorded 73 sieverts per hour recorded in the aftermath of the meltdown. The level of radiation is so high that an official of the National Institute of Radiological Sciences told the Japan Times that medical professionals have never considered dealing with this level of radiation in their work.
TEPCO has stated that the cause of the radiation spike is a 2 meter diameter hole inside the bottom grating of the containment vessel. The hole was likely caused by melted fuel.
Images from the Fukushima Daiichi nuclear power plant's No. 2 reactor revealed a hole thought to be made by fuel leaking out of the pressure vessel.Nikkei Asian Review
Plans have been made to send a robot into the area to survey the damage as the true extent of the structural damage remains unknown. However, previous attempts to use robots to gauge damage or seal breaches at Fukushima have failed. Several robots were deployed to seal a breach in another containment vessel, which continues to release 300 tons of radioactive water a day into the Pacific Ocean. Due to the high temperatures present, all of the robots were rendered nonfunctional and unable to complete the task.
While TEPCO previously claimed that most of the reactor's nuclear fuel remained contained in the pressure vessel, company spokesman Yuichi Okamura stated that "it's highly possible that melted fuel leaked through."
TEPCO has yet to state the expected impact of the radiation spike or the potential consequences of the nuclear fuel leak. The company is expected to detail its plan for containment and offer more details regarding the impacts of this latest development in the coming week. However, given that TEPCO admitted to "covering up" the impact of the initial disaster with the full complicity of the Japanese government, it remains to be seen if they can be taken at their word.
Reposted with permission from our media associate True Activist.
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By Harry Kretchmer
By 2030, almost a third of all the energy consumed in the European Union must come from renewable sources, according to binding targets agreed in 2018. Sweden is helping lead the way.
Sweden is a world leader in renewable energy consumption. Swedish Institute/World Bank
Naturally Warm<p>54% of Sweden's power comes from renewables, and is helped by its geography. With plenty of moving water and 63% forest cover, it's no surprise the <a href="https://sweden.se/nature/energy-use-in-sweden/#" target="_blank">two largest renewable power sources</a> are hydropower and biomass. And that biomass is helping support a local energy boom.</p><p>Heating is a key use of energy in a cold country like Sweden. In recent decades, as fuel oil taxes have increased, the country's power companies have turned to renewables, like biomass, to fuel local 'district heating' plants.</p><p>In Sweden these trace their <a href="https://www.sciencedirect.com/science/article/pii/S0360544217304140#fig3" target="_blank">origins back to 1948</a>, when a power station's excess heat was first used to heat nearby buildings: steam is <a href="https://www.sciencedirect.com/topics/engineering/district-heating-system" target="_blank">forced along a network of pipes</a> to wherever it's needed. Today, there are around 500 district heating systems across the country, from major cities to small villages, providing heat to homes and businesses.</p><p>District heating used to be fueled mainly from the <a href="https://www.sciencedirect.com/science/article/pii/S0360544217304140" target="_blank">by-products of power plants</a>, waste-to-energy plants and industrial processes. These days, however, Sweden is bringing more renewable sources into the mix. And as a result of competition, this localized form of power is now the country's<a href="https://www.sciencedirect.com/science/article/pii/S0360544217304140#fig3" target="_blank" rel="noopener noreferrer"> home-heating market leader.</a></p>
Sweden is using smart grids to turn buildings into energy producers. Huang et al/Elsevier
Energy ‘Prosumers’<p>But Sweden doesn't stop at village-level heating solutions. Its new breed of energy-generation takes hyper-local to the next level.</p><p>One example is in the city of Ludivika where 1970s flats <a href="https://www.buildup.eu/sites/default/files/content/transforming-a-residential-building-cluster-into-electricity-prosumers-in-sweden.pdf" target="_blank">have recently been retrofitted with the latest smart energy technology</a>.</p><p>48 family apartments spread across 3 buildings have been given photovoltaic solar panels, thermal energy storage and heat pump systems. A micro energy grid connects it all, and helps charge electric cars overnight.</p><p>The result is a cluster of 'prosumer' buildings, producing rather than consuming enough power for 77% of residents' needs. With <a href="http://www.diva-portal.org/smash/get/diva2:1232060/FULLTEXT01.pdf" target="_blank" rel="noopener noreferrer">high levels of smart meter usage</a>, it's a model that looks set to spread across Sweden.</p>
<div id="d7bf9" class="rm-shortcode" data-rm-shortcode-id="8757b138d5570bec9d6aad18074a429a"><blockquote class="twitter-tweet twitter-custom-tweet" data-twitter-tweet-id="1273556364263071744" data-partner="rebelmouse"><div style="margin:1em 0">Read more about Western Harbour and book a visit: https://t.co/ujSmVs9rNK 🏡🌳🌊 https://t.co/C5PuPziqIM</div> — Smart City Sweden (@Smart City Sweden)<a href="https://twitter.com/SmartCitySweden/statuses/1273556364263071744">1592474473.0</a></blockquote></div>
Scaling Up<p>A recent development by E.ON in Hyllie, a district on the outskirts of Malmö, southern Sweden, <a href="https://www.eonenergy.com/blog/2019/February/sweden-smart-city" target="_blank">has scaled up the smart grid principle</a>. Energy generation comes from local wind, solar, biomass and waste sources.</p><p>Smart grids then balance the power, react to the weather, deploying extra power when it's colder or putting excess into battery storage when it's warm. The system is not only more efficient, but bills have fallen.</p><p>Smart energy developments like those in Hyllie, Ludivika, and renewable-driven district heating, offer a radical alternative to the centralized energy systems many countries rely on today.</p><p>The EU's leaders have a challenge: how to generate 32% of energy from renewables by 2030. Sweden offers a vision of how technology and local solutions can turn a goal into a reality.</p>
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By Jessica Corbett
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