Fukushima

1 Jahr Fukushima: Weiterhin grosse Anstrengungen bei Aufräumarbeiten

Directly after the accident in Japan’s Fukushima Dai-ichi nuclear power plant on 11 March 2011, ENSI ordered immediate measures for a review of the safety of the Swiss nuclear power plants.

In parallel, an interdisciplinary team of experts from ENSI (the “Japan Analysis Team”) reconstructed the events of the accident and subjected them to in-depth analysis.

1 Jahr Fukushima: Weiterhin grosse Anstrengungen bei Aufräumarbeiten

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News

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Switzerland demands a strengthening of international safety monitoring

At the OECD Forum in Paris, ENSI Director Hans Wanner argued for a strengthening of the international monitoring of nuclear power. This followed comments by the Swiss Federal Councillor Doris Leuthard at yesterday’s meeting of minsters from the G8 and G20 countries on nuclear safety in Paris during which she called for internationally binding safety standards. Compliance with such standards should be monitored by independent inspectors from other countries and in the interests of transparency the IAEA, the International Atomic Energy Agency should facilitate easy access to the results.

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Background Articles

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Impact on the Surrounding Areas

In the case of Chernobyl, large quantities of radioactivity were released very quickly after the start of the accident. This made a prompt evacuation impossible, and not only the on-site operating staff but also the population in the surrounding areas were exposed to quite high doses of radiation. Over the following days and weeks, a […]

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Fukushima

Progressions of the Accidents at Chernobyl and Fukushima Dai-ichi

Sketch of the RBMK reactor (graphite–moderated pressure tube type boiling water reactor, i.e. the type of reactor used at Chernobyl). Source: GRS One very crucial difference between the two accidents concerns the structural designs of the reactors. The reactor at Chernobyl was constructed in such a way that, under certain circumstances, the nuclear chain reaction […]

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Fukushima

ENSI Report on Fukushima IV: Radiological Effects

Nine months after the disaster at the Fukushima nuclear power plant, Japan is working to contain radiation exposure in the region of the accident. The challenges confronting the country in this endeavour are shown by the new ENSI report on the radiological effects of the accident on 11 March 2011. ENSI already deduced some “Lessons […]

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Documents

Implementation of post-Fukushima international recommendations

Implementation status in Switzerland of International Recommendations: ENSREG recommendations CNS 2nd Extraordinary Meeting recommendations IAEA Action Plan recommendations for Members States List of checkpoints from the Swiss "Lessons Learned" report List of open points for Switzerland from the EU Stress Tests read more

Action Plan Fukushima 2014

The Fukushima action plans serve the purpose of ensuring transparency as regards processing of the identified points until they are implemented. They also provide an instrument for the planning of supervisory work and the assessment of new knowledge gained from the Fukushima accident. In 2014, ENSI is focussing on the pursuit of ongoing work as well as on the following points: Seismic instrumentation Containment integrity during outages Extreme weather conditions Increase in safety margins Hydrogen management Severe Accident Management Emergency management at national Swiss level EU stress tests follow-up   . read more

Action Plan Fukushima 2013

The Fukushima action plans serve the purpose of ensuring transparency as regards processing of the identified points until they are implemented. They also provide an instrument for the planning of supervisory work and the assessment of new knowledge gained from the Fukushima accident. read more

ENSI Report on Fukushima III: Lessons Learned – ENSI-AN-8001

The analysis of the accidents at Fukushima confirms that Swiss nuclear plants are safe. However, the Swiss Federal Nuclear Safety Inspectorate (ENSI) has identified a variety of findings (Lessons Learned) from Fukushima which should now be utilised to continue optimising the safety of Switzerland’s nuclear power plants. read more