Tricastin nuclear power station: a radioactive leak in groundwater
Tricastin nuclear power station: a radioactive leak in groundwater. EDF
revealed, this Tuesday, December 21, that a tritium leak had been detected
in the Tricastin nuclear power plant.
Le Dauphine 21st Dec 2021
Safety Concerns Mount Over Damaged Fuel Rods at China’s Taishan Nuclear Plant
Safety Concerns Mount Over Damaged Fuel Rods at China’s Taishan Nuclear Plant
A French whistleblower claims that the real number of damaged fuel rods exceeds the figure acknowledged by officials, and that there may be issues with other reactors of the same design. By Jesse Turland The Diplomat December 11, 2021 On November 28 Radio France International Chinese published claims by a whistleblower contradicting official statements downplaying the extent of damage to fuel rods at the Taishan 1 Nuclear Reactor in Taishan, Guangdong province.
The whistleblower, who works at a French nuclear energy company, warned that more than 70 fuel rods were damaged, 14 times the figure acknowledged by China’s Ministry of Ecology and Environment (MEE) in June, when it stated “about five” rods were damaged. Additionally, the whistleblower claimed the damage may be linked to a “design flaw.”
Under pressure from public activism, France’s nuclear energy regulator, Autorité de sûreté nucléaire (ASN), yesterday announced it would halt the development of the EPR reactor at Flamanville in Normandy, which uses the same design as Taishan, pending inquiries into the malfunctions at Taishan.
There is still a lot of work to be done on the [Flamanville] site before start-up operations, and feedback from the experience of the Taishan 1 EPR deviation must take place,” said ASN deputy general manager Julien Collet yesterday.
Located 110 kilometers south of Guangzhou, Taishan is the site of the world’s first reactors of the Evolutionary Power Reactor (EPR) design to commence operation. Its two reactors are capable of generating 1,750 Megawatts electric (Mwe) each.
According to the whistleblower, the problem of the Taishan EPR reactor is “a not-very-successful hydraulic system at the bottom of the vessel which gives an uneven distribution of power in the assemblies. A transverse current is created in the core and causes the assemblies to move, especially those at the periphery.”
The whistleblower’s claims were relayed by Bruno Chareyron, director of the Commission for Independent Research and Information about Radiation (CRIIRAD), a Paris-based NGO established in 1986 to monitor radioactive leaks in the wake of the Chernobyl disaster.
According to the whistleblower, the problem of the Taishan EPR reactor is “a not-very-successful hydraulic system at the bottom of the vessel which gives an uneven distribution of power in the assemblies. A transverse current is created in the core and causes the assemblies to move, especially those at the periphery.”
The whistleblower’s claims were relayed by Bruno Chareyron, director of the Commission for Independent Research and Information about Radiation (CRIIRAD), a Paris-based NGO established in 1986 to monitor radioactive leaks in the wake of the Chernobyl disaster.
”
There are at least three consequences. One is the fact that due to the damage to the nuclear fuel, a significant amount of radioactive substances migrate across the cladding of the rods and is go into the water of the primary circuit,” according to Chareyron.
“So radioactive gases like krypton and xenon are accumulating in the water inside the pressure vessel… Those gases are collected into tanks and those tanks are opened to the atmosphere normally every two months. But with fuel rod damage, some of the gases released have half-lives of years, like Krypton 85.”
He continued: “[The] second problem is the impact on the people working in the plant. Because if you have such damage in the core of the reactor, you contaminate the water inside the pressure vessel, but some of this contamination will stay inside the tubes, the pipes, the pumps.
“So when the operators have to conduct maintenance, they receive much more radiation than if the cladding fitted properly.”
Finally, “The third problem is if the fuel assemblies are a little bit broken, it means that you may reach a situation when, for example, in case of an earthquake, you cannot insert the control rods into the fuel assemblies because the assemblies are damaged,” Chareyron said…………….
Jesse Turland
Jesse Turland holds a degree in Chinese language and Asian Studies from the University of Melbourne and writes about contemporary Chinese society. https://thediplomat.com/2021/12/safety-concerns-mount-over-damaged-fuel-rods-at-chinas-taishan-nuclear-plant/
Whistleblower explained the tank design problem that caused the shutdown at Taishan nuclear power station
Last July, in China, the Taishan nuclear power plant was shut down. A few weeks earlier, an incident had taken place in the only EPR plant in service in the world, designed jointly by the Chinese CGN and the French EDF.
At the end of November, perhaps finally an explanation: the incident was due to a fault in the design of the vessel, according to a major French association specializing in nuclear safety. The incident which led in July to the shutdown of a reactor at the EPR nuclear power plant in Taishan, in southern China, is believed to be due to a design flaw in the vessel, the French association CRIIRAD said on Saturday.
The Commission for Independent Research and Information on Radioactivity (CRIIRAD) would get its
information from a “whistleblower”. “This is a Frenchman who works in the nuclear industry, having access to very precise technical information on the situation of the Taishan 1 reactor core,” a CRIIRAD official told AFP.
Taishan is the only pressurized water reactor (EPR) plant in the world, with two reactors. Four other EPR reactors are under construction, all in Europe: one in Finland, one in France in Flamandville and two in England. It is a tank design problem that would be the cause of the incident in Taishan reported on June 14, 2021. This is a first explanation.
TV5Monde 28th Nov 2021
The U.S. Nuclear Regulatory Commission found violations of federal regulations at Vogtle nuclear site.
 | |||
U.S. regulator to raise oversight at Georgia Vogtle nuclear power reactor https://finance.yahoo.com/news/u-regulator-raise-oversight-georgia-190308554.html?guccounter=1&guce_referrer=aHR0cHM6Ly93d3cuYmluZy5jb20v&guce_referrer_sig=AQAAAFLUuKMz6yKJdBOQz3f8MPdcejq875Aj93HjGgabK-76iDLroU7mahePG2UUtceKXHdb4cvQJDADLfjHUAdSK7rs4T9iB9Q1qhV5_ncjUA7ziTqk0iBJCIU8oMPpX7xIkkm7oOJH6GBmgz Nov 18 (Reuters) Reporting by Brijesh Patel in Bengaluru Editing by Marguerita Choy – The U.S. Nuclear Regulatory Commission (NRC) on Thursday said it will increase oversight at one of the Southern Co (SO.N) operated Vogtle nuclear power plants under construction in Waynesboro, Georgia.
The decision to increase oversight comes after finalizing two inspection findings involving the safety-related electrical raceway system at Unit 3, the NRC said.
The NRC said it had launched a special inspection in June 2021 and found two violations of federal regulations at the site.
NRC inspectors found that Southern Nuclear did not properly implement its corrective action program, resulting in construction quality issues, extensive rework, and a report to the NRC for a significant quality assurance breakdown.”
“They also found that the company did not follow design specifications while installing safety-related cables for reactor coolant pumps and equipment designed to shut down the reactor safely.”
The NRC said these findings fall under a low-to-moderate safety significance and will schedule a supplemental inspection to verify Southern Nuclear understands the root cause and has taken appropriate corrective actions.
Report: Nuclear Plant Failed to Prevent Flooding During Ida
Report: Nuclear Plant Failed to Prevent Flooding During Ida, Claims Journal, By Dave Collins | November 15, 2021 Operators of the Millstone nuclear power complex in Connecticut were too late in activating storm protection protocols when the remnants of Hurricane Ida hit the East Coast in September, resulting in minor flooding at the plant, federal regulators said Friday.
The Nuclear Regulatory Commission report said Dominion Energy, which runs the Millstone plant in Waterford along Long Island Sound, violated federal requirements, but deemed the violations of “very low safety significance” and did not issue penalties. The flooding did not affect any nuclear or safety equipment, the report said.
The commission, however, said Dominion’s “performance deficiency was more than minor” and that “required steps to protect risk significant structures, systems, and components from external flooding were not taken until after the consequential rainfall event was in progress.”…………………
The Nuclear Regulatory Commission report said the plant’s operators should have activated flood prevention measures before the storm hit, including closing flood gates, based on forecasts made earlier in the day. But they did not do so until after 8 p.m., when heavy rains already were falling. Two flood gates were not closed at all during the storm, resulting in minor flooding in an area near the Unit 2 reactor, the report said.
The commission said Dominion “did not take timely actions to place the plant in a safe condition prior to the arrival of a major storm.”…………. https://www.claimsjournal.com/news/east/2021/11/15/307069.htm
A year after damaged by fire, French nuclear submarine has been repaired
The French Navy’s damaged nuclear sub is out at sea once more, By Vivienne Machi 3 Nov 21, STUTTGART, Germany — The French Navy’s nuclear submarine Perle has returned to sea following just about a year of work to repair its fire-damaged body and splice it together with a second boat.
In late October, the 26-year-old nuclear attack submarine departed Cherbourg Naval Base, where it has been undergoing repairs by manufacturer Naval Group since October 2020, and returned to the service’s main base in Toulon, French Ministry of Defense spokesman Hervé Grandjean told reporters.
The nuclear attack submarine caught fire while undergoing maintenance in June 2020 in Toulon, and burned for 14 hours. The fore of the submarine suffered the most damage, while the aft of the ship, which houses the nuclear power plant and propulsion, was left intact…………….. https://www.defensenews.com/digital-show-dailies/feindef/2021/11/03/the-french-navys-damaged-nuclear-sub-is-out-at-sea-once-more/
A close shave in 1999 with a flood at France’s Blayais nuclear power plant
“Sensitive affairs”. “Tcherno-Blaye”: the scenario of a French Chernobyl?
What happened at the end of December 1999, during the “storm of the
century”, at the Blayais nuclear power plant in Gironde? Incident under
control or disaster scenario narrowly avoided? That evening, in any case,
one of the jewels of the French nuclear fleet found itself … with its
feet in the water. A flood that could have led to the worst: the meltdown
of a reactor, with its dramatic consequences .
France Info TV 1st Nov 2021
Fire at Akkuyu Nuclear Power Plant
Last minute… Fire panic at Mersin Akkuyu Nuclear Power Plant. It has
been reported that a fire broke out in the Akkuyu Nuclear Power Plant,
which is under construction in Mersin. Speaking about the fire, CHP’s Ali
Mahir Basarir said, “This nuclear power plant has been the scourge of
Mersin and Turkey.”
Cumhuriyet 31st Oct 2021
U.S. Navy reports on cause of incident with nuclear-powered submarine in South China Sea
The US Navy has figured out what a nuclear-powered attack submarine ran into in the South China Sea: report, Yahoo News, Ryan Pickrell, Tue, November 2, 2021,
- The US Navy has completed its investigation into a mysterious submarine incident in the South China Sea.
- USS Connecticut grounded on an uncharted seamount, USNI News first reported.
- The investigation has been sent to the fleet commander, who will consider accountability actions.
The US Navy investigators have determined what a nuclear-powered attack submarine hit in the South China Sea last month, USNI News reported Monday, citing defense officials familiar with the investigation and a legislative official.
The Seawolf-class nuclear-powered attack submarine USS Connecticut collided with an unidentified object on October 2, the Navy revealed five days after the incident. Investigators have reportedly determined the submarine ran aground on an undersea mountain, a seamount, the location of which was uncharted………… As of last Wednesday, the US Navy still was not quite sure what the submarine collided with, though defense officials told USNI News that early indications suggested that Connecticut collided with a seamount, an undersea feature that rises from the ocean’s depth…….
As the investigation into the incident has not yet been publicly released, information is still limited on how the submarine ran into an seamount and to what degree members of the crew and command are responsible……. https://news.yahoo.com/us-navy-figured-nuclear-powered-194721944.html
US nuclear submarine accident sparks safety fears in South China Sea
US nuclear submarine accident sparks safety fears in South China Sea https://www.scmp.com/news/china/military/article/3152181/us-nuclear-submarine-accident-sparks-safety-fears-south-china?module=perpetual_scroll&pgtype=article&campaign=3152181Busy waterway’s complex underwater terrain and shipping litter make it a challenging environment for the giant vessels
Collision has also highlighted the difficulties in safely disposing of the reactors from decommissioned subs, with no agreed guidelines, experts say. Minnie Chan 16 Oct, 2021
The damage to a US nuclear attack submarine which collided with a mystery object in the South China Sea earlier this month has raised concerns about their operational safety, as well as what happens to damaged and decommissioned nuclear reactors.
Defence experts have warned that nuclear submarines – among the world’s deadliest weapons – are also vulnerable in the event of an underwater accident causing a nuclear leak, regardless of whether they are general-purpose attack subs (SSN) or platforms for the launch of ballistic missiles (SSBN).
Pentagon Denies Chinese Accusation of Cover-Up in Nuclear Attack Submarine Crash
Pentagon Denies Chinese Accusation of Cover-Up in Nuclear Attack Submarine Crash USNI News, By: Heather Mongilio, October 12, 2021, Pentagon spokesman John Kirby on Tuesday denied a Chinese accusation that the U.S. is seeking to cover up a submarine collision in the South China Sea…..
Seawolf-class nuclear attack submarine USS Connecticut (SSN-22) hit an unknown object while underwater on Oct. 2, injuring 11 sailors, USNI News previously reported.
The Navy has not yet said what Connecticut struck, and Kirby referred reporters to the Navy when asked. USNI News previously reported that it was not another vessel.
It took the Navy five days to release information on the crash, which prompted Chinese Foreign Ministry spokesman Zhao Lijian to question the details about the collision, according to a transcript of the foreign ministry’s Monday press conference.
“Such irresponsible attitude and stonewalling and cover-up practice only make the international community more suspicious of the US intention and details of the accident,” Zhao said, according to the transcript.
Zhao called on the United States to clarify the location of the accident, if there was any nuclear leakage and if the crash will affect fishery, according to the statement.
“The US side should take a responsible attitude, give a detailed account of what happened as soon as possible and make a satisfactory explanation to the international community and regional countries,” he said.
…… The submarine arrived at Naval Base Guam on Friday and is undergoing an assessment and preliminary repairs while the Navy investigates the crash, USNI News reported this week.
U.S. 7th Fleet is leading a command investigation into the crash, while Submarine Force, U.S. Pacific Fleet heads up a safety investigation, COMSUBPAC spokeswoman Cmdr. Cindy Fields previously told USNI News…. https://news.usni.org/2021/10/12/pentagon-denies-chinese-accusation-of-cover-up-in-nuclear-attack-submarine-crash
China demands answers on US nuclear submarine accident in South China Sea
China demands answers on US nuclear submarine accident in South China Sea, SCMP, Minnie Chan, 8 Oct 21,
Chinese foreign ministry blames freedom of navigation operations as it seeks details on the where and how of collision and the likely nuclear risks. Complex underwater terrain and ongoing nuclear submarine arms race increase risk of accidents in the region, analyst warns
China has demanded further explanation from the United States over a collision involving a US Navy nuclear submarine in the South China Sea last week, slamming the lack of information as “irresponsible” and expressing serious concerns about any “nuclear leak”.
“The United States should clarify more details of the occurrence, including the specific location, the intention of its navigation, what kind of object the sub had struck, whether it caused a nuclear leak that would contaminate marine environment,” Chinese foreign ministry spokesman Zhao Lijian said on Friday.
“It’s irresponsible and displays a lack of transparency on the part of the US to deliberately delay and conceal the details of the accident.”
- ……… The incident with the Connecticut comes just weeks after Australia, the UK and the US announced a new security arrangement. The so-called AUKUS pact also created a rift with France, which saw a US$66 billion deal to provide Australia conventional submarines voided in favour of a deal for American-made nuclear-powered ships.
- ……………. A witness on Thursday told an inquest in London into the mysterious sinking of a French trawler that rescuers saw a submarine in the area of the type used by the Dutch navy……………….
US nuclear attack submarine hits object in South China Sea, injuring crew
US nuclear attack submarine hits object in South China Sea, injuring crew, ABC, 8 Oct 21, A nuclear-powered submarine collided with an unknown “object” while submerged in the South China Sea, United States military officials confirmed.
Key points:
- The submarine’s nuclear propulsion plant was not damaged and is operating normally
- It is not clear what the sub collided with, but officials say it could have been a sunken vessel
- An investigation will be launched into the incident
The Seawolf-class fast-attack submarine USS Connecticut struck the “object” on October 2 and while about a dozen sailors were hurt, none of the injuries were life-threatening, the US Navy said in a statement.
Officials said the submarine’s nuclear propulsion plant was not impacted and remained fully operational.
“The submarine remains in a safe and stable condition,” the statement said.
“The extent of damage to the remainder of the submarine is being assessed.”
US officials, speaking on the condition of anonymity, said the incident took place in international waters in the South China Sea.
They said it was not yet clear what object the sub had struck but that it was not another submarine.
One official said it could have been a sunken vessel, a sunken container or other uncharted object…………….
In 2009, two British and French nuclear subs were damaged after colliding in the Atlantic while in 2019 14 Russian naval officers were killed in a fire on a nuclear-powered submersible near the Barents Sea. …………….. https://www.abc.net.au/news/2021-10-08/us-nuclear-sub-hits-object-south-china-sea/100523164
Two French nuclear workers affected by contaminated water
Penly nuclear power plant near Dieppe: two employees affected by
contaminated water. Two EDF employees at the Penly nuclear power plant were
affected by contaminated water, on the night from Friday to Saturday,
October 2, 2021.
Actu.fr 2nd Oct 2021
Nuclear-powered submarines have ‘long history of accidents
Nuclear-powered submarines have ‘long history of accidents’, Adelaide environmentalist warns, ABC By Daniel Keane 17 Sept 21,
The plan to build nuclear-powered submarines in South Australia has alarmed anti-war and environmental campaigners, one of whom says the vessels have a “long history” of involvement in accidents across the globe.
Key points:
- Prime Minister Scott Morrison said the nuclear submarines would be built in Adelaide
- The Greens and other environmental groups say that raises serious public safety concerns
- SA’s former nuclear royal commissioner says the risks can be managed
Prime Minister Scott Morrison unveiled a deal to construct the new fleet of at least eight submarines, declaring a new era of strategic alignment with the United States and United Kingdom, and a new trilateral security partnership called AUKUS.
All Australians benefit from the national interest decisions to protect Australians and to keep Australians safe,” Mr Morrison said.
But Friends of the Earth Australia’s anti-nuclear spokesperson Jim Green said the plan was more likely to compromise public safety than enhance it.
I’m worried about the security and proliferation aspects of this, I’m deeply concerned as an Adelaidean. A city of 1.3 million people is not the place to be building nuclear submarines,” he said.
“North-western Adelaide could be a target in the case of warfare. Of course, that’s a very low risk but if it does happen, the impacts would be catastrophic for Adelaide.
“You should build hazardous facilities away from population centres, partly because of the risk of accidents and partly because of the possibility that a nuclear submarine site could be targeted by adversaries.”
Dr Green said the question of what would become of the spent fuel remained unanswered, and there was “a long history of accidents involving nuclear submarines”.
Many — but not all — of those occurred in submarines built in the former Soviet Union, including the infamous K-19, which was subsequently dubbed “The Widowmaker” and became the subject of a Hollywood film.
After its reactor suffered a loss of coolant, members of the crew — more than 20 of whom died in the next two years — worked in highly radioactive steam to prevent a complete meltdown.
Two US naval nuclear submarines — USS Thresher and USS Scorpion — currently remain sitting at the bottom of the Atlantic Ocean, at depths of more than two kilometres, after sinking during the 1960s.
More than 200 mariners died in the disasters, and neither vessels’ reactors, nor the nuclear weapons on board the Scorpion, have ever been recovered.
Two years ago, 14 Russian naval officers were laid to rest after they were killed in a fire on a nuclear-powered submersible in circumstances that were not fully revealed by the Kremlin.
Dr Green said Australia’s “nuclear power lobby” had “been quick off the mark”, and was already using the Prime Minister’s announcement to push for further involvement with the nuclear fuel cycle, including atomic energy and waste storage.
“The South Australian Nuclear Fuel Cycle [Royal] Commission, in its 2016 report, estimated a cost of $145 billion to construct and operate a nuclear waste repository,” he said.
“No country in the world has got a repository to dispose of high-level nuclear waste, and the only repository in the world to dispose of intermediate-level nuclear waste, which is in the United States, was shut for three years from 2014 to 2017 because of a chemical explosion.”…………….https://www.abc.net.au/news/2021-09-17/nuclear-submarines-prompt-environmental-and-conflict-concern/100470362
1 This Month
of the week – Shut Down Drone Warfare!
Tell the Ukrainian Government to Drop Prosecution of Peace Activist Yurii Sheliazhenko
Petition to revoke the licensing of the Near Surface Nuclear Disposal Facility (NSDF) at Chalk River. https://www.ourcommons.ca/petitions/en/Petition/Details?Petition=e-7247
To see nuclear-related stories in greater depth and intensity – go to https://nuclearinformation.wordpress.com
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