courtesy of TOKYO (AP) with contributions from Mari Yamaguchi & Ralph T. Niemeyer
Japan on Friday revised a roadmap for the cleanup of the tsunami-wrecked Fukushima nuclear plant, further delaying the removal of thousands of spent fuel units that remain in cooling pools since the 2011 disaster. It’s a key step in the decadeslong process, complicated by high radiation and other risks.
The government and the plant operator, Tokyo Electric Power Co., are keeping a 30- to 40-year completion target.
The Japanese government has since the day of the nuclear catastrophe on 11th March 2011 played a very dubious role when it came to releasing accurate information about the scope of the disaster raising questions how much the political elite is bribed by the nuclear mafia.
Furthermore, it became evident that the government secretly was working on a military nuclear strategy as a 248% state to GDP debt would make Japan’s economy become an easy victim of Chinese and Korean expansionism. One might think in those circles that it is better to be able to show a big stick especially since the Japanese government never apologised for fascist war crimes committed by Japan towards China and Korea.
A look at some of the challenges:
Contamination levels are still high, also outside the 20 and 30 km zones and through the Tama river that flows through the TOKYO2020 OLYMPIC village, pose a threat to the sports event but also for the regular population. Above map illustrates the areas where mandatory evacuation should have been executed if the minimum standards that were even applied by the Soviets in Chernobyl in 1986, but because of financial strain the Japanese government rather opted to cover up the disaster and blocked websites reporting about it, such as EU-chronicle.eu
MORE THAN 4,700 UNITS OF FUEL IN POOLS
More than 4,700 units of fuel rods remain at the three melted reactors and two others that survived the 2011 earthquake and tsunami. They pose a high risk because their storage pools are uncovered and a loss of water in case of another major disaster could cause the fuel rods to melt, releasing massive radiation. Their removal at Units 1 and 2, after repeated delays, is now postponed by up to 10 years from the initial target of 2018, with more preparation needed to reduce radiation and clear debris and other risks.
Fuel rod removal at the Unit 1 reactor pool will begin sometime in 2027-2028, after debris is cleaned up and a huge rooftop cover installed to contain radioactive dust. Fuel removal at Unit 2 pool is to begin in 2024-2026. Work at the Unit 3 reactor pool began in April 2019 and all 566 units will be removed by March 2021. TEPCO has emptied the pool at Unit 4, which was offline and only suffered building damage, and aims to have all remaining rods in reactor pools removed by 2031 for safer storage in dry casks.
1.2 MILLION TONS OF RADIOACTIVE WATER
TEPCO has been unable to release the 1.2 million tons of treated but still radioactive water kept in nearly 1,000 tanks at the plant, fearing public repercussions and the impact on the area’s struggling fishing and agriculture. The amount of water is growing by 170 tons daily because it is used to cool the melted fuel inside the reactors.
The Ministry of Economy, Trade and Industry recently drafted a proposal to release the water to the sea or the air, or a combination of both.
For ‘security reasons’ the Japanese government’s proposal can not be published, but EU-Chronicle assures that it has a copy on file.
TEPCO says it can only store up to 1.37 million tons, or until the summer of 2022. Time is limited because preparation is needed before any water release. TEPCO and the government say the tanks pose risks if they were to spill their contents in another major earthquake, tsunami or flood. They also need to free up space to build storage for melted fuel removed from reactors beginning 2021.
The water is still somewhat contaminated, but TEPCO says further treatment can remove all but radioactive tritium to levels allowed for release. Some experts say tritium is not harmful to humans in small amounts and has been routinely released from nuclear plants around the world.
But, while Tritium has a very low half time and dissolves within a few weeks completely, the fish population would have it in their stomachs when eating vegetable from the sea and by this take in the radioactive Tritium whereas every fish has it’s natural level of Tritium already and wouldn’t be harmed by the radioactive tritiated water per se. In the stomach of the fish, instead, it will do a lot of harm and destroy cells. With humans being at the end of the food chain, the radioactive Tritium will end up on our plates. So no more Sushi!
880 TONS OF MELTED FUEL
Removing an estimated 880 tons of molten fuel from Fukushima’s three melted reactors is the toughest and unprecedented challenge. It’s six times the amount dealt with in the aftermath of the 1979 Three Mile Island partial core melt in the United States.
Removal is to begin in 2021 at Unit 2, where robotic probes have made more progress than at Units 1 and 3. A robotic arm was developed to enter the reactor from the side to reach the melted fuel, which has largely fallen to the bottom of the primary containment vessel. A side entry would allow the simultaneous removal of fuel rods in the pool from the reactor’s top.
The removal of melted fuel will begin with just a spoonful, which will be carefully measured and analyzed under International Atomic Energy Agency instructions. The government hopes to gradually expand the scale of the removal, though further expertise and robotic development is needed. The first decade through 2031 is a crucial phase that will affect future progress. Units 1 and 3 fell behind due to high radiation and water levels respectively, requiring more investigation.
770,000 TONS OF RADIOACTIVE WASTE
Japan has yet to develop a plan to dispose of the highly radioactive melted fuel and other debris that come out of the reactors. TEPCO will compile a plan for those after the first decade of melted fuel removal. Managing the waste will require new technologies to reduce its volume and toxicity. TEPCO and the government say they plan to build a site to store waste and debris removed from the reactors, but finding one and obtaining public consent will be difficult.
Additionally, there will be an estimated 770,000 tons of solid radioactive waste by 2030, including contaminated debris and soil, sludge from water treatment, scrapped tanks and other waste. They will be sorted, treated and compacted for safe storage under a plan to be compiled by 2028.
8 TRILLION YEN
The government says Fukushima’s decommissioning cost is estimated at 8 trillion yen ($73 billion), though adding compensation, decontamination of surrounding areas and medium-term storage facilities would bring the total to an estimated 22 trillion yen ($200 billion). The Japan Center for Economic Research, a think tank, estimates that decommissioning alone would cost 51 trillion yen ($470 billion) if the water is not released and tritium removal technology is pursued.
These figures are highly inflated, as the German-Russian ArtAqua Group that secured the tender for the Caesium removal in 2014 and also submitted a proposal in 2018 for the Tritium removal has quoted an estimated 50 to 80 billion USD for the same amount. It obviously doesn’t appeal to the Japanese government to pay any money and for that reason operates with totally unrealistic figures. The Russian government so far also didn’t get any payments for the work carried out in Fukushima since 2016.
More than 10,000 workers will be needed annually in coming years, about one third assigned to work related to the radioactive water. Securing experienced workforce for the decadeslong cleanup is a challenge in a country with rapidly aging and declining population. Nuclear Regulation Authority Chairman Toyoshi Fuketa raised concerns about a possible labor shortage following recent minor mishaps at the plant.
TEPCO has expressed intention of hiring workers for the decommissioning under Japan’s new policy allowing more unskilled foreign labor, but the plan is on hold following government instructions to address language and safety concerns.
One wonders how the world will react when the Olympics are being opened amid such environmental disaster that appears as cynical as the Sydney new year’s celebrations amid wildfires killing inhabitants, firefighters and wildlife. Many Australians had expressed over the handling of the fire catastrophe that they would be safer if Prime Minister Scott Morrison rather had kept staying on his holidays in Hawaii. Maybe the Japanese as well as the athletes and visitors of the TOKYO 2020 Olympics would think same about the Japanese government.
Follow the authors on Twitter at https://www.twitter.com/mariyamaguchi