Today's Headlines - 26 August 2023
Fukushima nuclear water release
GS Paper - 3 (Nuclear Energy)
Twelve years after the Fukushima nuclear meltdown, Japan is releasing the power plant’s cooling water into the ocean. Japanese officials say it’s safe, but experts are divided. It’s hard to have a purely fact-based discussion about Japan’s Fukushima water release plan. Due to several scandals and a lack of transparency, trust appears to be low in both TEPCO, the company that operated the now-defunct Fukushima-Daiichi nuclear power plant, and the Japanese government, with its close ties to the atomic energy industry.
Fukushima: Why is the water being released into the Pacific Ocean?
Storage tanks holding the cooling water at the ruined facility are full. Japan has had to cool the reactors at the nuclear power plant since they were destroyed during a catastrophic tsunami in 2011.
It takes 170 tons of cooling water per day to keep them cool. In addition, rain and groundwater have been seeping into the site. There are 1,046 storage tanks holding 1,343 million cubic meters of water.
Once the water has been filtered, it is considered safe and sent through a one-kilometer (0.62 mile)-long tunnel before being released into the Pacific Ocean — a process that will take an estimated 30 years to complete. The radioactive waste, meanwhile, will remain on land.
Is Japan allowed to release filtered cooling water into the sea?
Both Japan’s atomic agency and the International Atomic Energy Agency (IAEA) have approved the plan.
The IAEA said Japan had met international safety standards and that “discharges of the treated water would have a negligible radiological impact to people and the environment.
They said it had been common practice for nuclear power plants worldwide to release used cooling water into the ocean for decades routinely.
However, environmental and fishing experts, as well as neighboring states, have accused Japan of downplaying the level of radiation in the cooling water.
They are concerned about far-reaching ocean contamination, potential environmental damage, a fall in fishing revenue and loss of reputation.
How will the water be prepared before it’s released?
Before it’s released into the ocean, the contaminated cooling water and groundwater will be sent through a filter system called the Advanced Liquid Processing System (ALPS).
ALPS can filter 62 different radionuclides — radioactive elements — but can’t filter out the radioactive isotope tritium.
So, TEPCO wants to dilute the water until the concentration of tritium is reduced to about 1,500 Becquerel per liter or less than a fortieth of the national safety standard. A becquerel (Bq) is a unit that measures the rate at which radioactive material emits radiation or how many atoms in the material decay in a given time.
TEPCO says that if the levels of tritium remain too high after filtration, they will repeat the process before releasing the water.
How dangerous is tritium?
Tritium is a form of hydrogen that occurs naturally in Earth’s atmosphere. It is radioactive but far less dangerous than cesium-137 or strontium-90 — both of which are life-threatening.
It emits a weak beta particle that can be stopped by a sheet of plastic or human skin.
It’s a different story if strontium-90 gets into the human body: “Strontium is absorbed by the bones, and once it’s in the crystalline structure of the bones, you can’t get rid of it again.
#upsc #news #headline #fukushima #nuclear #energy #water #japan #meltdown #powerplant #coolingwater #dicussion #tepco #daiichi #pacificocean #facilityarefull #catastropic #tsunami #rain #groundwater #cubic #meter #kilometer #tunnel #radioactive #sea #discharges #enviroment #experts #radiation #level #ALPS #filtersystem #filtration #dangerous #tritium #hydrogen #strontium #particle #humanbody
Fukushima nuclear water release
GS Paper - 3 (Nuclear Energy)
Twelve years after the Fukushima nuclear meltdown, Japan is releasing the power plant’s cooling water into the ocean. Japanese officials say it’s safe, but experts are divided. It’s hard to have a purely fact-based discussion about Japan’s Fukushima water release plan. Due to several scandals and a lack of transparency, trust appears to be low in both TEPCO, the company that operated the now-defunct Fukushima-Daiichi nuclear power plant, and the Japanese government, with its close ties to the atomic energy industry.
Fukushima: Why is the water being released into the Pacific Ocean?
Storage tanks holding the cooling water at the ruined facility are full. Japan has had to cool the reactors at the nuclear power plant since they were destroyed during a catastrophic tsunami in 2011.
It takes 170 tons of cooling water per day to keep them cool. In addition, rain and groundwater have been seeping into the site. There are 1,046 storage tanks holding 1,343 million cubic meters of water.
Once the water has been filtered, it is considered safe and sent through a one-kilometer (0.62 mile)-long tunnel before being released into the Pacific Ocean — a process that will take an estimated 30 years to complete. The radioactive waste, meanwhile, will remain on land.
Is Japan allowed to release filtered cooling water into the sea?
Both Japan’s atomic agency and the International Atomic Energy Agency (IAEA) have approved the plan.
The IAEA said Japan had met international safety standards and that “discharges of the treated water would have a negligible radiological impact to people and the environment.
They said it had been common practice for nuclear power plants worldwide to release used cooling water into the ocean for decades routinely.
However, environmental and fishing experts, as well as neighboring states, have accused Japan of downplaying the level of radiation in the cooling water.
They are concerned about far-reaching ocean contamination, potential environmental damage, a fall in fishing revenue and loss of reputation.
How will the water be prepared before it’s released?
Before it’s released into the ocean, the contaminated cooling water and groundwater will be sent through a filter system called the Advanced Liquid Processing System (ALPS).
ALPS can filter 62 different radionuclides — radioactive elements — but can’t filter out the radioactive isotope tritium.
So, TEPCO wants to dilute the water until the concentration of tritium is reduced to about 1,500 Becquerel per liter or less than a fortieth of the national safety standard. A becquerel (Bq) is a unit that measures the rate at which radioactive material emits radiation or how many atoms in the material decay in a given time.
TEPCO says that if the levels of tritium remain too high after filtration, they will repeat the process before releasing the water.
How dangerous is tritium?
Tritium is a form of hydrogen that occurs naturally in Earth’s atmosphere. It is radioactive but far less dangerous than cesium-137 or strontium-90 — both of which are life-threatening.
It emits a weak beta particle that can be stopped by a sheet of plastic or human skin.
It’s a different story if strontium-90 gets into the human body: “Strontium is absorbed by the bones, and once it’s in the crystalline structure of the bones, you can’t get rid of it again.
#upsc #news #headline #fukushima #nuclear #energy #water #japan #meltdown #powerplant #coolingwater #dicussion #tepco #daiichi #pacificocean #facilityarefull #catastropic #tsunami #rain #groundwater #cubic #meter #kilometer #tunnel #radioactive #sea #discharges #enviroment #experts #radiation #level #ALPS #filtersystem #filtration #dangerous #tritium #hydrogen #strontium #particle #humanbody
Today's Headlines - 29 August 2023
Water shortages reduce from wastewater
GS Paper - 3 (Environment)
Europe has experienced severe heat and drought over the last few summers, and 2023 has been no different. Vast swathes of Central and Southern Europe are simply too dry from a lack of rainfall. Human-induced climate change has led to more heat waves and drought and is one reason for Europe’s growing water crisis. At the same time, demand for the resource is growing, with industry and agriculture extracting more water from the ground, rivers and lakes than can be replenished.
Who uses the most water?
Industry uses half of Europe’s water resources, while a further 40% is hoovered up by agriculture and 10% by households.
In the European Union, water scarcity impacts 11% of all citizens. Falling water supplies can lead to households facing use restrictions. But the problem also impacts the energy sector.
In 2022, French authorities had to switch off some nuclear power plants because river water used for cooling them was too warm.
Last year, the dry summer also reduced hydropower in Norway. Farmers, though, who use large amounts of water for crop irrigation, are also hard hit by water shortages and drought.
Could using industry wastewater help farmers?
One solution for agriculture could be to use more treated industrial and domestic wastewater for irrigation and protect valuable freshwater supplies. Six times more waste water could be reused across the EU than current levels.
Freshwater resources are scarce and increasingly under pressure. In times of unprecedented temperature peaks, we need to stop wasting water and use this resource more efficiently.
New EU regulations on minimum requirements for water reuse for agricultural irrigation came into force this summer.
The regulations stipulate that EU member states must process communal and industrial wastewater so it can be used by farmers.
Processing and reusing water could replace a fifth of irrigation that currently uses groundwater in Spain and Portugal, said the European Commission.
In France, Italy and Greece, it could be as much as 45%. Wastewater could cover all irrigation needs in EU countries with smaller agricultural sectors.
Leaky pipes lead to massive water waste
One way to save water that is often overlooked is maintaining the pipes that shuttle the resource to homes and businesses.
On average, a quarter of the EU’s freshwater is lost during transport to taps because of leaks and broken pipes.
Currently, countries most affected by drought and a lack of rain — such as Spain, Italy and Bulgaria — invest the least amount of money per citizen to fix leaky water infrastructure.
#upsc #headline #news #watershortages #wastewater #enviroment #europe #vast #swathes #watercrisis #resource #industry #agriculture #scarcity #nuclear #powerplant #riverwater #farmers #frenchauthorities #scarce #temperature #wastingwater #spain #portugal #european #commission #france #italy #greece #wasterwater #sectors #leaky #pipes #massivewaste #bulgaria
Water shortages reduce from wastewater
GS Paper - 3 (Environment)
Europe has experienced severe heat and drought over the last few summers, and 2023 has been no different. Vast swathes of Central and Southern Europe are simply too dry from a lack of rainfall. Human-induced climate change has led to more heat waves and drought and is one reason for Europe’s growing water crisis. At the same time, demand for the resource is growing, with industry and agriculture extracting more water from the ground, rivers and lakes than can be replenished.
Who uses the most water?
Industry uses half of Europe’s water resources, while a further 40% is hoovered up by agriculture and 10% by households.
In the European Union, water scarcity impacts 11% of all citizens. Falling water supplies can lead to households facing use restrictions. But the problem also impacts the energy sector.
In 2022, French authorities had to switch off some nuclear power plants because river water used for cooling them was too warm.
Last year, the dry summer also reduced hydropower in Norway. Farmers, though, who use large amounts of water for crop irrigation, are also hard hit by water shortages and drought.
Could using industry wastewater help farmers?
One solution for agriculture could be to use more treated industrial and domestic wastewater for irrigation and protect valuable freshwater supplies. Six times more waste water could be reused across the EU than current levels.
Freshwater resources are scarce and increasingly under pressure. In times of unprecedented temperature peaks, we need to stop wasting water and use this resource more efficiently.
New EU regulations on minimum requirements for water reuse for agricultural irrigation came into force this summer.
The regulations stipulate that EU member states must process communal and industrial wastewater so it can be used by farmers.
Processing and reusing water could replace a fifth of irrigation that currently uses groundwater in Spain and Portugal, said the European Commission.
In France, Italy and Greece, it could be as much as 45%. Wastewater could cover all irrigation needs in EU countries with smaller agricultural sectors.
Leaky pipes lead to massive water waste
One way to save water that is often overlooked is maintaining the pipes that shuttle the resource to homes and businesses.
On average, a quarter of the EU’s freshwater is lost during transport to taps because of leaks and broken pipes.
Currently, countries most affected by drought and a lack of rain — such as Spain, Italy and Bulgaria — invest the least amount of money per citizen to fix leaky water infrastructure.
#upsc #headline #news #watershortages #wastewater #enviroment #europe #vast #swathes #watercrisis #resource #industry #agriculture #scarcity #nuclear #powerplant #riverwater #farmers #frenchauthorities #scarce #temperature #wastingwater #spain #portugal #european #commission #france #italy #greece #wasterwater #sectors #leaky #pipes #massivewaste #bulgaria