Tag Archives: contamination

Contaminated areas and permanent evacuations

More details have emerged lately regarding assessments of measured levels of radioisotopes as well as the Japanese government’s strategy for a permanent evacuation zone.  Soil measurements of radioactive cesium are distributed in patches throughout six municipalities: Okumamachi, Futabamachi, Namiemachi, Tomiokamachi, … Continue reading

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Scrutiny of evacuations continues

This week the Wall Street Journal published a cluster of frontpage stories (here and here, along with video content) about the evacuation mishaps and tragedies in the wake of the Fukushima Daiichi nuclear incident.  In “How Japan Stumbled in Forecasting … Continue reading

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Evacuations lacked key plume model input

A recent frontpage story in the New York Times explores in more depth an evacuation tragedy that plagued the Fukushima nuclear incident.  The event they focus on is the evacuation of Namie, first reported by the Daily Yomiuri on June … Continue reading

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Scientific source term estimation of radiation release

Researchers at the Japan Atomic Energy Agency have just published a scientific paper reporting on detailed source term estimation for the airborne release from the Fukushima Daiichi Plant.  The paper in “Journal of Nuclear Science and Technology” can be found here. … Continue reading

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International entities take steps to encourage data release

Several recent developments related to data sharing have elevated the topic on the international stage.  Wednesday June 23 at an International Atomic Energy Agency meeting the members agreed to share more information in the event of a nuclear crisis, and … Continue reading

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Evacuations expand house-to-house

Following a week of speculation that the Japanese government might expand the evacuation region in response to patchy, elevated levels of radiation in some neighborhoods, the government took action June 16.  The designation of new hotspots is based on radiation … Continue reading

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Plume forecasts and crisis management

The Daily Yomiuri has an on-going series on the nuclear crisis where today they describe the impact of delays in releasing data.  In one instance, a community near the plant was evacuated in the early hours of March 12 to a … Continue reading

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Upward revisions to radiation estimates

Upward revisions of the scale of the radiation damage continue to be released.  Here is a summary of a few from the past several days. Yesterday the Japanese government reported to the IAEA that reactors 1-3 all experienced a nuclear … Continue reading

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High radiation measured at reactor 1

Today radioactive steam emitting from reactor 1 was found to contain 3000-4000 millisieverts/hr of radiation.  The steam is attributed to the water pooling in the basement of reactor 1.  (This is reported to be the highest level measured in the … Continue reading

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Release of data by government continues

Japanese officials continue to come under attack for their failure to fully release data related to the radiation contamination – both radiation measurements and additional overlooked plume forecasts.  The high radiation measured on the ground 30-50 km from the reactor … Continue reading

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