Die Zahl der Kommentare auf unsere Fukushima-Beiträge ist jenseits der 1000er Marke. Es wird zu unübersichtlich!
Daher gibt's dieses Forum, bei dem ihr über den Unfall von Fukushima kommentieren könnt, was das Zeug hält!
Zu einer kleinen Einführung, hier entlang.
Ihr seid neu hier? Das physikBlog hat in vier Artikeln den Unfall von Fukushima begleitet. Eine Lektüre, zumindest des Aktuellsten, empfiehlt sich vor dem Mitdiskutieren!
Es sei erwähnt, dass wir bei der Moderation der Kommentare hier weniger streng sind, als im Blog. Ihr seid freier in eurer Themenwahl.
Viel Spaß, André & Andi vom physikBlog.
Tepco hat vor mehreren Tagen gemeldet, dass Unterwasserbarrieren aus Stahl installiert werden, um die Kontamination im Meer zurück zu halten.
Was haltet Ihr davon?
To minimize the movement of contaminated water to the open sea, temporary boards to stop water (3 steel plates in total) were installed on 13 April on the ocean-side of the Inlet Bar Screen of Unit 2.
Silt fences have also been installed in the inlet canal and in front of the Inlet Bar Screens of Units 1, 2, 3 and 4. On 11 April, a silt screen was installed at the southern end of the inlet canal. The installation in front of the Inlet Bar Screen of Units 3 and 4 was completed on 13 April and for Units 1 and 2 on 14 April.
Gibt es eurerseits Erfahrungen/Einschätzungen zu Zeolith?
Es sind aber mittlerweile schon verschiedene Maßnahmen zur Wasserentsorgung eingeleitet worden. (siehe hier im Forum unter: Wie geht es weiter).
eng said:@chefin: Du kannst hier nicht einfach von Dir auf andere schließen.
Natürlich kenne ich auch solche "Vollpfosten" wie Du sie beschrieben hast, und die bekommen von mir auch "Langholz" wenn ich sie erwische. Aber ich kenne viel mehr Leute die nichts das Finanzamt hintergehen, keine Schwarzarbeit machen, keine Fahrerflucht begehen, kein Öl ins Grundwasser ablassen, keine Bestechungsgelder annehmen, keine Versicherung betrügen und vor allem keine Ellenbogenmentalität haben.
Ota said his experiments proved the powder can remove almost 100 percent of cesium when 1.5 grams of the powder are mingled with 100 milliliters of water in which cesium has been dissolved at a density of 1-10 parts per million. The tests also confirmed that the powder can remove iodine and strontium.
The Tokyo Electric Power Company says it detected 160 becquerels of radioactive iodine-131 per cubic centimeter in samples of sea water collected near the water intake for the Number 2 reactor on Wednesday morning. The figure is 4,000 times the national limit and higher than the level detected on Tuesday. [...]
TEPCO says it also detected radioactive cesium-134 at 2,300 times the limit and cesium-137 at 1,600 times the limit on Wednesday morning. These levels are also higher than those detected on Tuesday.
The Nuclear Safe and Industry Agency explains that sea water containing highly dense radioactive material is piling up due to a special fence set up in the area to keep the leakage of the contaminated water from the Number 2 reactor water intake. It says it sees no new leakage of highly radioactive water.
Und was haben die eigentlich mit dem Zulauf an Meerwasser zu tun?
Tokyo Electric Power Company says it will start work on Tuesday to install seawater purifiers, which use the mineral zeolite to absorb radioactive cesium.
The utility previously built undersea silt barriers around the water intakes for the No.2 and 3 reactors after highly contaminated water was found to be leaking into the sea. [...]
It is planning to draw and treat a maximum of 30 tons of water per hour from inside the silt fences, where radiation levels are higher, aiming to reduce contamination in the water outside the fences.
The company says the equipment will be installed around the intakes of the No.2 and 3 reactors, and it will begin preliminary operations as early as Thursday.
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Tokyo Electric Power Company began testing water filtering devices at the Fukushima Daiichi nuclear plant to decontaminate highly radioactive wastewater on Thursday. [...]
After a test-run, Tokyo Electric plans to filter a maximum 30 tons of contaminated water per hour from inside the fence and to discharge the decontaminated water into the sea.
The company began full-fledged operation of 2 filtering devices on Monday after a series of test-runs.
The devices are installed near the water intakes of the Number 2 and Number 3 reactors, where high radiation levels have been detected.
The devices are designed to first pump up seawater and then absorb radioactive cesium using the mineral zeolite. The water is returned to the sea as the final step.
TEPCO says each device is capable of treating up to 30 tons of seawater per hour. Tests showed the machines reduced cesium levels by 20 to 30 percent. The company says it will find ways to increase filtering capability.
Tepco said a separate device, set up near the coastline, started operating Monday to remove radioactive materials from seawater. Water is being pumped through the zeolite-filled device to collect cesium and other radioactive materials. But Tepco said it was not clear if it would remove strontium as well.
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