Work to prepare for the decommissioning of Tokyo Electric Power Co.’s Fukushima No. 2 nuclear plant is under way in Fukushima Prefecture, a mammoth project the operator plans to complete in about 44 years.
However, TEPCO has not yet secured a location to dispose of a large amount of radioactive waste, a difficult task that it plans to tackle in the years to come.
The project is expected to prove an enormous challenge to TEPCO as the utility needs to proceed with it while simultaneously taking on the even more formidable task of cleaning up the crippled Fukushima No. 1 nuclear plant.
Together, 10 reactors are housed at the two plants: four at the No. 2 plant and six at the No. 1 plant.
The company will need to train workers for the decommissioning, secure a workforce for the lengthy project that will span decades, and put measures in place to ensure the safety of the facilities when hit by natural disasters such as torrential rain, earthquakes and tsunami.
On July 6, reporters were granted access to the decommissioning work at the Fukushima No. 2 plant so they could show the work to the public for the first time since the process began on June 23.
The No. 2 plant is located on the coastal side of the towns of Tomioka and Naraha, and the work on July 6 revolved around decontamination at its No. 1 reactor building.
Donning protective gear, 12 workers from TEPCO and contractors cleaned up pipes around water tanks with a high-pressure washer in a room for inspecting the equipment that inserts and removes control rods from the reactor core.
The work to decommission the No. 2 plant will be divided into four stages, with each stage spanning a decade or so, according to TEPCO.
In the first stage, operators will focus on decontaminating the facility to prepare for the following stages.
After that, TEPCO expects to move on to the second stage, which involves the demolition and removal of equipment surrounding the nuclear reactors. The reactors will be dismantled and cleared in the third stage, and then finally the reactor buildings in the fourth stage.
“We are determined to steadily and safely proceed with the decommissioning work while gaining support and understanding from local residents,” said Takaki Mishima, the head of the plant.
Perhaps the most crucial question that must be resolved will be where high-level and low-level waste that will be produced from the decommissioning process should be temporarily stored before a permanent disposal site is found.
A total of 9,532 spent nuclear fuel rods–highly radioactive materials–are stored at the plant.
Fukushima officials are demanding they be removed from the prefecture by the time the decommissioning wraps up in fiscal 2064.
But no municipalities in Japan want to accept and house such dangerous materials in their backyards.
TEPCO estimates the amount of low-level radioactive waste will total 52,000 tons.
To dispose of the waste, it needs to be buried underground at a depth from several meters to more than 70 meters from the surface, depending on the levels of radioactivity.
But as of now, no potential sites in Japan for temporary storage have been determined, not to mention a final disposal site.
“That is a question we will address later,” an official from the utility said.
Although the Fukushima No. 2 plant was damaged by the Great East Japan Earthquake and tsunami of 2011, it was spared from a meltdown and has been idle since.
TEPCO’s decision to pull the plug on the plant came at the insistence of the prefectural government and local residents.
(This article was compiled from reports by Shigetaka Kodama, Tetsuya Kasai, Yu Fujinami and Tsuyoshi Kawamura.)
Taiwan’s move to end the country’s use of nuclear power continues, with Unit 1 of the Kuosheng Nuclear Power Plant being shut down. The reactor was taken offline at the end of June, six months ahead of its scheduled Dec. 27 retirement, with officials saying spent fuel-storage capacity constraints meant the unit could not be refueled…..
Taiwanese President Tsai Ing-wen has made closing the country’s nuclear power plants a goal of her administration, saying the three remaining reactors will go offline by mid-2025. The 985-MW Kuosheng unit, which officials said generated about 3% of the nation’s total electricity, is the third of what were six operating reactors to be shuttered……
Decommissioning Plan
Taipower first proposed its decommissioning plan for Kuosheng Unit 1 in 2018, and it was approved by the Atomic Energy Commission (AEC) in October 2020. The plan included construction of a dry storage facility for used fuel, but a dispute between the city of New Taipei and Taipower has delayed the project.
Officials in New Taipei have yet to issue a permit for the storage facility, which would house the used fuel rods from Unit 1. The New Taipeil government has said it does not want a permanent spent nuclear fuel storage facility within the city……..
Tsai, who took over as Taiwan’s first female president in 2016, is the leader of the Democratic Progressive Party (DPP). The DPP has championed a “nuclear-free homeland.” The president in her opening remarks at the renewable energy-focused EnergyTaiwan event in October 2020 called on Taiwan to be “a leading center of green energy in the Asia-Pacific region.”
New policy initiatives have supported that goal, including amendments to the country’s Electricity Act that mandated nuclear power generation be ended no later than 2025. The government has said it expects moving away from coal-fired and nuclear power, and support of gas-fired generation and renewable energy, will generate about $36 billion in investment in the country’s energy sector by 2025, along with creating 20,000 jobs………..
Voters also on Aug. 28 will be asked about a plan to restart construction of the Lungmen Nuclear Power Plant 4. That plant, designed with two General Electric advanced BWR reactors and generation capacity of 2,700 MW, was expected to be completed in 2004 after construction began in 1999. Numerous delays, cost overruns, and government opposition put the project on hold in 2014. Even if voters approve a restart, analysts have said it’s unlikely the project would resume under the current administration. https://www.powermag.com/taiwan-shuts-another-reactor-as-part-of-nuclear-free-goal/
Taiwan on its path toward denuclearization. The Taiwanese government shut down the No. 1 generator at its Kuosheng Nuclear Power Plant in Wanli District, New Taipei City, on Thursday (July 1) to prepare for the unit’s full closure.
The nuclear generator went online on Dec. 28, 1981. A General Electric Boiling Water Reactors Type-6 model, the unit was licensed to run for 40 years, which will expire on Dec. 27, 2021. It has produced more than 270 billion kilowatt-hours (kWh) of electricity for the past 40 years as well as 800 tons of radioactive waste, according to the Environment Information Center.
The generator is being decommissioned early because the spent fuel pool is nearly at capacity. If the generator keeps operating, there will be not be enough space to store nuclear waste, the Taiwan Power Company (TPC) explained.
French-based global power developer EDF Energy vowed to put all seven of its advanced gas-cooled reactor nuclear power stations in the United Kingdom into the defueling and decommissioning stages within the next decade.
The company’s agreement with the UK government calls for shutting down the AGR stations by 2030. At that point EDF’s generating capacitywill consist of Sizewell B, HPC, potentially Sizewell C (currently under construction) and renewables including solar, onshore and offshore wind.
Washington (June 25, 2021) – Senator Edward J. Markey (D-Mass.), Chair of the Subcommittee on Clean Air, Climate, and Nuclear Safety in the Senate Committee on Environment and Public Works, today sent a letter to the Nuclear Regulatory Commission (NRC), urging the agency to address safety and security concerns before approving the draft rule, “Regulatory Improvements for Production and Utilization Facilities Transitioning to Decommissioning,” and putting out a proposed rule for public comment. “The Nuclear Regulatory Commission must prioritize the safety and security of the nuclear plants it oversees,” said Senator Markey. “As currently written, the proposed rule would allow the NRC and plant operators to cut corners on safety and limit public participation, which is critical to the decommissioning process. The communities around our nuclear plants deserve better than this.”
A copy of the letter can be found HERE.In his letter, Senator Markey requests that the NRC:
propose a defined and exact set of rules on how plants should navigate the decommissioning process;
improve public participation during the NRC’s consideration of any license transfers requested in connection with a nuclear plant’s decommissioning process;
acknowledge and address the fact that spent fuel could remain onsite for long periods of time, perhaps indefinitely; and
reevaluate its proposal to reduce financial protections for offsite and onsite liability claims for plants that are in the process of decommissioning.
Senator Markey also requests that the NRC ensure that the twenty-three nuclear reactors, such as Pilgrim Nuclear Power Station, that have already begun the decommissioning process adapt their operations to reflect stronger standards. The NRC should also establish the proper checks to ensure the safety and security of the eight additional nuclear power plants that have already declared their intent to decommission. Senator Markey has consistently urged the NRC to prioritize safety and public participation in the nuclear decommissioning process. Last Congress, Senator Markey reintroduced the Dry Cask Storage Act, which was aimed at improving the storage of spent nuclear fuel at nuclear plants across the nation.
As the Pilgrim Power Station commenced its decommissioning process, Senator Markey continued to fight to ensure that the NRC prioritized safety and public participation. In August 2019, Senators Markey and Elizabeth Warren (D-Mass.), and Representative William Keating (MA-09) wrote to the NRC to urge it to delay ruling on the proposed license transfer for Pilgrim from Entergy Nuclear Operations, Inc. to Holtec International until after the Commission considered and ruled on extant petitions and motions. In October 2018, Senator Markey and Rep. William demanded clear details from Holtec and Entergy about the safety and security issues involved in the ownership, transfer, and eventual decommissioning of the power plant.
Britain prepares for new wave of nuclear decommissioning
Sceptics of the fuel argue the plans demonstrate why no new plants should be built, Ft.com Nathalie Thomas in Edinburgh 23 June, 21, At Dungeness B nuclear power station on a remote stretch of the Kent coast in south-east England, workers are making preparations to carefully remove thousands of radioactive fuel elements from its reactors and transfer them to a purpose-built pond for at least 90 days for cooling. The spent fuel will later be packed into 53-tonne “flasks” fortified with 39cm-thick steel walls before being transported across country by train to Sellafield in Cumbria.
The nuclear facility in north-west England is host to most of the radioactive remnants of Britain’s civil nuclear programme that dates back to the 1950s. These include highly toxic waste that will remain there until a suitable site is found for an underground repository where it will have to be stored for more than 100,000 years to make it safe.
Preparations for the “defuelling” of Dungeness B started with “immediate effect” on June 7 when its majority owner, French state-controlled utility EDF, announced it would close the plant seven years early. It had not been operational since September 2018 as engineers tried to fix problems, including corrosion and cracks in its pipework.
The 1.1GW plant is the first of seven built in the UK between the mid-1960s and late-1980s using advanced gas-cooled reactor (AGR) technology to come out of service. It will kickstart a decommissioning process spanning generations, which sceptics argue strikes at the heart of why no new nuclear plants should be built.
The remaining six AGR plants are due to be retired by the end of this decade at the latest, leaving the more modern Sizewell B plant in Suffolk, which uses pressurised water reactor technology, as the only one operational out of the existing fleet
. “[Decommissioning of] many of these facilities will continue well into the 22nd century,” said Paul Dorfman of University College London’s Energy Institute. “The problem with decommissioning is it always turns out to be more complex than one had imagined.”
Critics also point out that the decommissioning of Britain’s 17 earliest atomic power sites has been extremely costly. The latest clean-up bill for those sites, which include a generation of nuclear plants known as the “Magnox” stations, is estimated at more than £130bn over 120 years. ……
Climate activists, such as E3G and Greenpeace, have long argued that the debate over building costly, complex new nuclear plants detracts from investment in cheaper, climate-friendly technologies……….
The exact arrangements for the decommissioning of Dungeness and the six other AGR plants are subject to negotiation between EDF and the government. It will be financed via a £14.5bn fund set up in 2005.
The French utility is expected to take at least three years to remove all fuel from each site and potentially carry out some early demolition work before handing them over to the UK state-owned Nuclear Decommissioning Authority. EDF declined to comment. The next stage will probably involve the treatment and removal of waste and demolition of facilities that are no longer needed. Some facilities will be left untouched for 85 years — to allow residual radioactive materials to decay — before demolition. …….. https://www.ft.com/content/0381e567-d088-4802-a2e4-e125c8099605
Renewables should be the focus of Indonesia’s net-zero pledge. (IEEFA Indonesia): In growing energy markets like Indonesia, decision makers are facing a barrage of pro-nuclear media coverage as the nuclear industry floods the market with panels and webinars focused on the potential of nuclear power.
A new report from the Institute for Energy Economics and Financial Analysis (IEEFA) highlights that while nuclear is promising as a baseload substitute for coal power, it currently has no technical, financial, or market viability in the Indonesian context. Author of IEEFA’s report Elrika Hamdi says that Indonesian nuclear power supporters often promise that nuclear will be an affordable, safe and sustainable solution for the problem of over-reliance on fossil fuel.
Yet, 70 years after the first nuclear power developments were announced, the technology is quickly losing market share as global power markets pivot toward more cost-competitive renewables and storage solutions.
“Despite the steady erosion of nuclear power’s competitive potential, key Southeast Asian energy ministries continue to be lobbied by nuclear advocates. Many of these lobbyists are international backers of new small modular reactor (SMR) technologies, who are actively engaging with governments and utilities around the region,” says Hamdi.
As old generation large-scale nuclear units face decommissioning, there is little consensus about how long it will take for newer small-scale nuclear technologies to be economically viable or how long-standing safety and waste disposal risks will be addressed.
“Determining the suitability of nuclear for the Indonesian power market will be a challenging task that will require honest and deep engagement by senior policymakers to ensure there is a high degree of accountability as Indonesians need to know the real cost of having nuclear in the power system as well as how the government will handle the problem of nuclear waste.”
Hamdi says that the short-list of nuclear power issues includes technology reliability, safety and safeguards, the geographic conditions of Southeast Asia, the prospects for decommissioning, waste treatment and permanent disposal, fuel availability, affordability, and the risk of persistent cost overruns and frequently overlooked shut-down costs.
Research has shown that an estimated 97% (175 out of 180 projects examined) of nuclear power projects exceed their initial budgets. The average cost overrun for a nuclear power plant was US$1.3 billion per project with construction delays adding 64% more time than initially projected.
Nuclear waste disposal costs also complicate the cost estimation process—typically raising project costs as political risk factors crystallize. The inability of leading nuclear nations to find safe and affordable solutions for permanent high-level nuclear waste disposal leaves expensive back-end cost issues on the table.
The economics of nuclear power in Indonesia is also blurred by the fact that under existing regulations, nuclear accident liabilities for nuclear owners/operators are capped at a maximum of IDR 4 trillion (US$276 million) for power plants with a capacity of more than 2000MWe. It is cut in half as the capacity decreases. This means smaller nuclear reactors would be liable for only a fraction of potential accident costs.
“These open-ended cost issues make it hard to evaluate claims about the market viability of nuclear power in Indonesia’s cost-sensitive market. This is particularly true when most established nuclear nations are pivoting away from commitments to new nuclear power facilities as more flexible renewable plus storage options reshape power sector economics,” says Hamdi.
“If a decision is reached to move ahead with pilot stage nuclear projects, policymakers and the government will need to do a lot of policy work including the technical evaluation, the regulatory preparation and the financial support, including preparation of the currently non-existent third-party liability insurance framework.
“This will place a serious burden on a government already taxed by the response to the COVID-19 pandemic and efforts to revitalize the financially constrained PT Perusahaan Listrik Negara (PLN), Indonesia’s national power company.”
PLN also recently pledged to become carbon neutral by 2060. However, the plan released shows nuclear only entering the energy mix in 2040. This demonstrates that PLN is realistic about the technical, financial, and market challenges that need to be overcome if nuclear power is to successfully integrate into Indonesia’s future energy mix.
Hamdi says that until these issues have been acknowledged and fully addressed, the safe path for Indonesia, for now, would be to pause and set realistic goals for its power development strategy.
This includes taking advantage of Indonesia’s abundance of renewable energy resources and market viability.
“Currently only 2.5% of Indonesia’s 400GW renewable energy potential has been utilized. That means that new technology options such as nuclear must compete with the deflationary cost curve in evidence with increasingly low-cost and low-risk renewable power solutions.
“New innovations to support grid flexibility such as demand response and storage are providing a cost-effective alternative to baseload-heavy planning disciplines. This trend raises questions about how small-scale nuclear reactors will fit into a more diverse power market where more cost-competitive renewable options could under-cut untested technologies that are years away from realizing economies of scale.
“The smaller, easily dispatchable, and walk-away safe promise of the new Gen-IV SMR technology offer is promising, IF and when the technology reaches commercial stage. But until such technology is proven to be technically and financially feasible, Indonesia’s safest option is to pause and set a more realistic net-zero scenario with resources and technologies that are already readily available with less cost, less risk, and less future liabilities.”
LADBible 15th May 2021, A scientist has warned that Chernobyl nuclear power plant must be dismantled in the next 100 years or else it will collapse.
Professor Neil Hyatt is the Royal Academy of Engineering and Nuclear Decommissioning Authority’s research chair in radioactive waste management. Speaking to LADbible about recent developments that nuclear reactions had been detected from deep within the mummified plant – 35 years after its core exploded in what is widely viewed as history’s worst nuclear disaster – he says it’s time to act.
“If we don’t take it down, it’s going to fall down,” says Professor Hyatt, who teaches at Sheffield University. “The original shelter was built as a temporary facility to stabilise a situation and the New Safe Confinement is essentially the same thing – to buy us time. [But] it only buys us around 100 years or so.
“If you think about nuclear decommissioning, which I do all the time, look at the projects that are going on around the world. “There’s the Sellafield site in the UK – that’s one hundred years to decommission the Sellafield site at a cost of £132 billion, at least. “That probably tells you it’s going to take at least 50 years, if we started today, probably at a cost of about £900 million, to decommission Chernobyl.
“These are orders of magnitude, and the reason is because we still don’t know everything we need to know to decommission it, about the material inside.” He adds: “If we don’t take it down, it’s gonna collapse eventually. If you’ve bought yourself 100 years, you really need to start cracking on with the dismantling – probably in the next 20 years.
Kent Online 10th May 2021, A power station in Kent could start its defuelling phase seven years early unless a number of “significant and ongoing technical challenges” are overcome. Dungeness B power station on Romney Marsh has been off-line since September 2018 while a multi-million pound maintenance programme was carried out.
This work was due to be completed last year but that timeline changed to August 2021 following a series of delays. But now EDF say the ongoing challenges and risks “make the future both difficult and uncertain”.
As a result, the energy company is now exploring a range of options – including starting the procedure to shut the station down later this year, seven years ahead of its planned defuelling phase. A statement from EDF reads: “Dungeness B power station last generated electricity in September 2018 and is currently forecast to return to service in August 2021.
“The station has a number of unique, significant and ongoing technical challenges that continue to make the future both difficult and uncertain. “Many of these issues can be explained by the fact that Dungeness was designed in the 1960s as a prototype and suffered from very challenging construction and commissioning delays. “We expect to have the technical information required to make a decision in the next few months, as it is important we bring clarity to the more than 800 people that work at the station, and who support it from other locations, as well as to government and all those with a stake in the station’s future.”
Overdue Shutdown of the Indian Point Nuclear Plant
Environmental groups write that gains in energy efficiency and renewable power exceed the plant’s annual output.
“Nuclear Plant’s Shutdown Means More Fossil Fuel in New York”(news article, April 13):
New York State is making good on its promise to replace the aging, unsafe Indian Point nuclear plant with clean energy. Gains in energy efficiency and renewable power over the last decade already exceed the plant’s total annual output, with much more to come.
We can expect year-to-year changes given fluctuations in energy demand and prices. But the overall trend in New York is clear: Clean energy is here to stay, and emissions reductions are on track to reach the state’s ambitious climate goals.
Closing this dangerous plant is overdue. Over the years Indian Point has experienced reactor structure problems with the potential for structural failure, as well as leaks, fires and unplanned shutdowns.
For the 20 million people who live within 50 miles of it, Indian Point’s long-planned closure ends a risky chapter. Paul GallayKit Kennedy Mr. Gallay is president of Riverkeeper and Ms. Kennedy is senior director, climate and clean energy program, at the Natural Resources Defense Council. https://www.nytimes.com/2021/04/21/opinion/letters/indian-point-nuclear.html
Sierra Club 16th April 2021, After announcing it would drop one of its leases in the Palo Verde Nuclear plant last year, this month PNM proposed replacing the energy with 100% solar and battery. In support of its proposal, PNM cited the Energy Transition Act’s requirements and the Public Regulation Commission’s decision last year to choose a 100% solar/storage proposalrather PNM’s favored gas-inclusive replacement scenario for San Juan Generating Station coal. The replacement proposal will need to be approved by the commission. In selecting carbon emission-free generation to replace Palo Verde, PNM states in testimony it has taken into consideration “the state’s energy transition policies and long-term mandate for a carbon emission-free generation portfolio.” While we have yet to delve into all of the details of PNM’s application, this is very encouraging and we look forward to supporting PNM’s request for prompt approval of replacement resources.
Reuters 8th April 2021, DF Energy, owned by French utility EDF, is exploring a range of scenarios for its Dungeness B nuclear plant in Britain, including bringing forward its decommissioning date of 2028, it said on Thursday. The 1.1 gigawatt Dungeness B plant, in Kent on the south coast of England, has been offline since 2018 as the company has been carrying out inspections and maintenance of pipes carrying steam to the turbine. EDF Energy has also been trying to complete repair work on corrosion identified during inspections of safety back-up systems.
The plant is currently forecast to return to service in August. It was designed in the 1960s and first started generating electricity in 1983. EDF Energy said it has spent more than 100 million pounds ($138 million) on the plant during its current outage and it has a number of ongoing technical challenges that make its future uncertain.
Decade After Fukushima Disaster, Greenpeace Sees Cleanup Failure, Bloomberg Green, By Aaron Clark,
Land identified for cleanup remains contaminated: Study
Long-term threat to human and environmental health remains
Ten years after the worst nuclear accident since Chernobyl, land Japan identified for cleanup from the triple reactor meltdown of the Fukushima Dai-Ichi atomic power plant remains contaminated, according to a report from Greenpeace.
In addition, Greenpeace said its own radiation surveys conducted over the last decade have consistently found readings above government target levels, including in areas that have been reopened to the public. The lifting of evacuation orders in places where radiation remains above safe levels potentially exposes people to an increased risk of cancer, the report said.
On average, just 15% of land in the “Special Decontamination Area,” which is home to several municipalities, has been cleaned up, according to the environmental advocacy group’s analysis of government data. That’s despite the government’s claims that the area has largely been decontaminated, the group said.
……..While the government has been steadily lifting evacuation orders on towns since 2014, roughly 36,000 people are still displaced.
Nuclear Engineering International 3rd March 2021, REPORTS IN THE UK THAT EDF Energy’s Hinkley Point B station would close ‘early’, in 2022, sounded a strange note for nuclear industry veterans. They knew that the venerable advanced gas-cooled reactor (AGR) on the west coast, on its startup in 1979, was originally expected to have a lifetime of around 25 years.
But in fact, it has been in operation for 40 years and could have more than one more year remaining, if owner EDF Energy takes it to its final end date in mid 2022. But those newspapers had noted that EDF had hoped to delay final shutdown until 2023. For longstanding opponents of the plant, however, closure comes not a moment too soon — and they believe equally that operation should end at the UK’s remaining AGRs.
At issue is the interlocking graphite blocks that in the AGR design form the reactor core. Opponents argue that years of irradiation have caused so much damage to the blocks that the plants should be out of operation. This is indeed one of the ageing issues that affects AGRs, but the situation, and the decision on whether to close the plant, is more complicated.
Seattle Times 3rd March 2021,The head of the wrecked Fukushima nuclear plant says there’s no need to extend the current target to finish its decommissioning in 30-40 years despite uncertainties about melted fuel inside the plant’s three reactors.
Ten years after meltdowns of three of its reactors following a massive March 2011 earthquake and tsunami that devastated northeastern Japan, the Fukushima Daiichi plant has stabilized but faces new challenges.
Nuclear regulators recently found fatal levels of contamination under the lids of two reactors, a test removal of melted fuel debris from one reactor has been delayed for a year, and a recent earthquake may have caused new damage to the reactors.
About 900 tons of melted fuel debris remain inside the plant’s three damaged reactors, and its safe removal is a daunting task that its operator, Tokyo Electric Power Co., or TEPCO, and the government say will take 30-40 years to finish. The removal of spent fuel units from cooling pools is already being delayed for up to five years. But Akira Ono, who as head of the plant is also its chief decommissioning officer, said he doesn’t plan to change the current goal to finish decommissioning between 2041 and 2051.
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