#nuclearplants — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #nuclearplants, aggregated by home.social.
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CA #wildfires: a warning to #NRC on #ClimateChange
January 16, 2025
"The NRC’s actions to address the risks from natural hazards do not fully consider potential climate change effects on severe nuclear accident risks. 'For example, NRC primarily uses historical data in its licensing and oversight processes rather than climate projections data,' the GAO report said.
"Beyond Nuclear has uncovered similar findings during our challenges to the NRC’s extreme relicensing process for extending reactor operating licenses, now out to the extreme of 60 to 80 years and talk of 100 years. We found that the agency’s staff believes and stubbornly insists that an #environmental review for climate change impacts (#SeaLevelRise, increasingly severe #hurricanes, extreme #flooding, etc.) on reactor safety and reliability is 'out of scope' for the license extensions hearing process.
"The GAO report points out to the NRC that wildfires, specifically, can dangerously impact US nuclear power stations operations and public safety with potential consequences that extend far beyond the initiating natural disaster. These consequences can include loss of life, large scale and indefinite population dislocation and uninsurable economic damage from the radiological
consequences:" 'Wildfire. According to the NCA (National Climate Assessment), increased heat and drought contribute to increases in wildfire frequency, and climate change has contributed to unprecedented wildfire events in the Southwest. The NCA projects increased heatwaves, drought risk, and more frequent and larger wildfires. Wildfires pose several risks to nuclear power plants, including increasing the potential for onsite fires that could damage plant infrastructure, damaging transmission lines that deliver electricity to plants, and causing a loss of power that could require plants to shut down. Wildfires and the smoke they produce could also hinder or prevent nuclear power plant personnel and supplies from getting to a plant.'
"Loss of offsite electrical power (#LOOP) to nuclear power stations is a leading contributor to increasing the risk of a severe nuclear power accident. The availability of alternating current (AC) power is essential for safe operation and accident recovery at commercial nuclear power plants. Offsite fires destroying electrical power transmission lines to commercial reactors therefore increase the probability and severity of nuclear accidents.
"For US nuclear power plants, 100% of the electrical power supply to all reactor safety systems is initially provided through the offsite power grid. If the offsite electrical grid is disturbed or destroyed, the reactors are designed to automatically shut down or 'SCRAM'. Onsite emergency backup power generators are then expected to automatically or manually start up to provide power to designated high priority reactor safety systems needed to safely shut the reactors down and provide continuous reactor cooling, pressure monitoring, but to a diminished number of the reactors’ credited safety systems. Reliable offsite power is therefore a key factor to minimizing the probability of severe nuclear accidents.
"The GAO identifies a number of US nuclear power plant sites that are vulnerable to the possible outbreak of wildfires where they are located. 'According to our analysis of U.S. Forest Service and NRC data, about 20 percent of nuclear power plants (16 of 75) are located in areas with a high or very high potential for wildfire,' the GAO report states. 'More specifically, more than
one-third of nuclear power plants in the South (nine of 25) and West (three of eight) are located in areas with a high or very high potential for wildfire.' The GAO goes on to identify 'Of the 16 plants with high or very high potential for wildfire, 12 are operating and four are shutdown.'"To analyze exposure to the wildfire hazard potential, the GAO used 2023 data from the U.S. Forest Service’s Wildfire Hazard Potential Map. 'High/very high' refers to plants in areas with high or very high wildfire hazard potential. Those #NuclearPower stations described by GAO as 'high / very high' exposure to wildfires and their locations are excerpted from GAO Appendix III: Nuclear Power Plant Exposure to Selected Natural Hazards.
Table 1: Potential High Exposure to “Wildfires” at Operating Nuclear Power Plants
–AZ / #SAFER, one of two mobile nuclear emergency equipment supply units in the nation, “HIGH / VERY HIGH”
–CA / #DiabloCanyon Units 1 & 2 nuclear power station, “HIGH / VERY HIGH”
–FL / #TurkeyPoint Units 3 & 4 nuclear power station, “HIGH / VERY HIGH”
–GA / #EdwinI. Hatch Units 1 & 2 nuclear power station, “HIGH / VERY HIGH”
–GA / $Vogtle Units Units 1, 2, 3 & 4, nuclear power station, “HIGH / VERY HIGH”
–NC / #BrunswickNPP Units 1 & 2 nuclear power station, “HIGH / VERY HIGH”
–NC / #McGuire Units 1 & 2 nuclear power station, “HIGH / VERY HIGH”
–NC / #ShearonHarris Units 1 & 2 nuclear power station, “HIGH /VERY HIGH”
–NB / #Cooper nuclear power station, “HIGH / VERY HIGH”
–SC / #Catawba Units 1 & 2 nuclear power station, “HIGH / VERY HIGH”
–SC / #HBRobinson Units 1 & 2 nuclear power station, “HIGH / VERY HIGH”
–WA / #ColumbiaNuclearPower station, “HIGH / VERY HIGH”Table 2: Potential High Exposure to “Wildfires” at Shutdown Nuclear Power Plants
–CA / #SanOnofre Units 1 & 2, “HIGH / VERY HIGH”
–FL / #CrystalRiver, “HIGH / VERY HIGH”
–NJ / #OysterCreek, “HIGH / VERY HIGH”
–NY / #IndianPoint Units 1, 2 & 3, “HIGH / VERY HIGH”
"Wildfires can transport radioactive contamination from nuclear facilities
"A historical review of wildfires that occur around nuclear facilities (research, military and commercial power) identifies that these events are also a very effective transport mechanism of radioactivity previously generated at these sites and subsequently released into the environment by accident, spills and leaks, and careless dumping. The radioactivity is resuspended by wildfires that occur years, even decades later. The fires carry the radioactivity on smoke particles downwind, thus expanding the zone of contamination further and further with each succeeding fire. The dispersed radionuclides can have very long half-lives meaning they remain biologically hazardous in the environment for decades, centuries and longer."
cc: @Cyclist @stfn @collectifission
Read more:
https://beyondnuclear.org/ca-wildfires-are-a-warning-to-nrc-on-climate-change/#NoNukes #NoNukesForAI #RethinkNotRestart #NuclearPlants #NuclearPowerPlants #ClimateCrisis #Radiation
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#Wildfire risks high at #US #NuclearPlants
Posted on January 19, 2025 by beyondnuclearinternational
The GAO identifies a number of US nuclear power plant sites that are vulnerable to the possible outbreak of #wildfires where they are located.
"'According to our analysis of U.S. Forest Service and NRC data, about 20 percent of nuclear power plants (16 of 75) are located in areas with a high or very high potential for wildfire,' the GAO report states. 'More specifically, more than one-third of nuclear power plants in the South (nine of 25) and West (three of eight) are located in areas with a high or very high potential for wildfire.' The GAO goes on to identify 'Of the 16 plants with high or very high potential for wildfire, 12 are operating and four are shut down.'
"To analyze exposure to the wildfire hazard potential, the GAO used 2023 data from the U.S. Forest Service’s Wildfire Hazard Potential Map. 'High / very high refers to plants in areas with high or very high wildfire hazard potential. Those nuclear power stations described by GAO as 'high / very high' exposure to wildfires and their locations are excerpted from GAO Appendix III: Nuclear Power Plant Exposure to Selected Natural Hazards.
Table 1: Potential High Exposure to 'Wildfires' at Operating Nuclear Power Plants
–AZ / #SAFER, one of two mobile nuclear emergency equipment supply units in the nation, “HIGH / VERY HIGH”
–CA / #DiabloCanyon Units 1 & 2 nuclear power station, “HIGH / VERY HIGH”
–FL / #TurkeyPoint Units 3 & 4 nuclear power station, “HIGH / VERY HIGH”
–GA / #EdwinIHatch Units 1 & 2 nuclear power station, “HIGH / VERY HIGH”
–GA / #Vogtle Units Units 1, 2, 3 & 4, nuclear power station, “HIGH / VERY HIGH”
–NC / #BrunswickNC Units 1 & 2 nuclear power station, “HIGH / VERY HIGH”
–NC / #McGuireNC Units 1 & 2 nuclear power station, “HIGH / VERY HIGH”
–NC / #ShearonHarris Units 1 & 2 nuclear power station, “HIGH /VERY HIGH”
–NB / #CooperNuclearPowerStation, “HIGH / VERY HIGH”
–SC / #Catawba Units 1 & 2 nuclear power station, “HIGH / VERY HIGH”
–SC / #HBRobinson Units 1 & 2 nuclear power station, “HIGH / VERY HIGH”
–WA / #ColumbiaNuclear power station, “HIGH / VERY HIGH”Table 2: Potential High Exposure to “Wildfires” at Shutdown Nuclear Power Plants
–CA / #SanOnofre Units 1 & 2, “HIGH / VERY HIGH”
–FL / #CrystalRiver, “HIGH / VERY HIGH”
–NJ / #OysterCreek, “HIGH / VERY HIGH”
–NY / #IndianPoint Units 1, 2 & 3, “HIGH / VERY HIGH”"Wildfires can transport #radioactive contamination from nuclear facilities
"A historical review of wildfires that occur around nuclear facilities (research, military and commercial power) identifies that these events are also a very effective transport mechanism of radioactivity previously generated at these sites and subsequently released into the environment by accident, spills and leaks, and careless dumping. The radioactivity is #resuspended by wildfires that occur years, even decades later.
"The fires carry the radioactivity on smoke particles #downwind, thus expanding the zone of #contamination further and further with each succeeding fire. The dispersed #radionuclides can have very long half-lives meaning they remain biologically hazardous in the environment for decades, centuries and longer."
Read more:
https://beyondnuclearinternational.org/2025/01/19/wildfire-risks-high-at-nuclear-plants/
#Downwinders #NoNukes #RethinkNotRestart #NoNukesForAI #NuclearSafety #ClimateCrisis -
From 2011:
In Tennessee, #HeatWaves Diminish #Nuclear Power Output
By Alyson Kenward
April 10, 2011"On July 8, 2010, as the temperature in downtown Decatur, Alabama climbed to a sweltering 98°F, operators at the #BrownsFerry #NuclearPowerPlant a few miles outside of town realized they had only one option to avoid violating their #environmental permit: turn down the reactors. For days, the Tennessee Valley Authority (#TVA), which owns the nuclear plant, had kept a watchful eye on the rising mercury, knowing that more heat outside could spell trouble inside the facility. When the #TennesseeRiver, whose adjacent waters are used to cool the reactors, finally hit 90°F and forced Browns Ferry to run at only half of their regular power output, the TVA hoped the hot spell would last just a few days.
"Eight weeks of unrelenting heat later, the plant was still running at half its capacity, robbing the grid of power it desperately needed when electricity demand from #AirConditioners and fans was at its peak. The total cost of the lost power over that time? More than $50 million dollars, all of which was paid for by TVA’s customers in Tennessee.
"The Browns Ferry nuclear plant, located on the Wheeler Reservoir along the Tennessee River near Athens, Alabama. It has three reactors, each producing about 1000 megawatts of electricity. Credit: Nuclear Regulatory Commission.
“'Last summer, the water in the Tennessee River warmed up early and stayed warm,' says TVA spokesman Ray Golden. 'When it got hot again in July and August, we were impacted by that and had to reduce power at the plant and get it from somewhere else.'
"With river water so warm, the #NuclearPlant couldn’t draw in as much water as usual to cool the facility's three reactors, or else the water it pumped back into the river could be hot enough to harm the local #ecosystem, says Golden. But for every day that the Browns Ferry plant ran at 50 percent of its maximum output, the TVA had to spent $1 million more than usual to purchase power from somewhere else, he says.
"What happened in northern Alabama last summer, at the largest of TVA's nuclear power plants, did not present a human safety concern. Operators knew there was never a risk of an explosion or nuclear meltdown, nor was there a threat of leaking radioactive material. But the prolonged spell of hot weather put the TVA at risk of violating environmental permits, with hefty fines as one consequence and potential harm to the Tennessee River ecosystem as another.
"It’s not the first time high temperatures have affected the performance of the Browns Ferry plant, and extreme heat is a growing concern for power plant operators across the #Southeast. While some nuclear plants can improve their cooling procedures to cope with the intake of warmer water, the upgrades can cost hundreds of millions of dollars and still don’t offer an indefinite defense against extreme heat. Because scientists say the Southeast (like many other parts of the world) can expect to see more frequent and intense heat waves by the end of this century, the problems for nuclear power and the people that rely on it for electricity may only be beginning.
#ExtremeHeat Limits Nuclear Energy Production
"The disaster still unfolding at Japan’s #FukushimaDaiichi nuclear plant has refocused America's attention on nuclear power, calling into question its future role in the country's energy portfolio. Many advocates of nuclear power say that we need to maintain — and even expand — nuclear power to get away from using fossil fuels, such as coal, and to help lower greenhouse gas emissions.
"But nuclear power has a paradoxical relationship with #ClimateChange. Even though it might help mitigate long-term #GlobalWarming, nuclear power is already being challenged by rising temperatures and the increasing number of heat waves around the world. Throughout the last decade, several plants have had to reduce electricity production during heat waves, just when when electricity demand typically reaches peak levels.
“'It’s a dilemma between mitigation of climate change, and adaptation to it,' says Natalie Kopytko, an energy policy doctoral student at the University of York in England. Having recently studied the ways in which climate change could have a negative impact on nuclear power, she says nuclear power is caught in the middle because it could be used to help lower greenhouse gas emissions, but global warming is making the technology less effective at providing electricity."
Read more:
https://www.climatecentral.org/news/in-tennessee-heat-waves-frustrate-nuclear-power#Greenwashing #NoNukes
#NoNewNukes #NuclearPowerPlant #NuclearPlants #NuclearIsNotCarbonFree #RethinkNotRestart #ClimateCrisis #ExtremeTemperatures #ExtremeWeather #ExtremeHeat -
Watch for Harmful Algal Blooms in MI Recreational Waters
By Farah Siddiqi/ Michigan News Connection
Published July 17, 2023"The #Michigan Department of Environment, Great Lakes, and Energy is advising people on what to do if they encounter the algae. One environmental group is convinced it's being caused by thermal discharge from #NuclearPlants.
"Jesse Deer in Water, community organizer for the watchdog group Citizens' Resistance at #FermiTwo, the nuclear plant in Monroe County, said the plant's discharge is full of toxins but people rarely hear about it, because the data comes from the Nuclear Regulatory Commission [#NRC].
"'The thermal discharge is the heat from the process of the cooling that's left over in the water,' Deer in Water explained. 'It comes out at temperatures well above the average, and damages the #ecosystems and fish, and the heat from it helps harmful algal blooms [#HABs] dominate the waters there locally.'
"The group is demanding more regulation and cleaner energy sources, saying nuclear power is neither 'clean' nor 'emission-free.'"