International Affairs

In Switzerland, on-going activities regarding safety assessment of the different stages in the lifetime of nuclear installations consist of periodic assessments and assessments of long-term operation for existing Swiss NPPs.

When it comes to international affairs, Switzerland has signed the Convention on Nuclear Safety (CNS) on 31 October 1995. In November 2011, an IRRS Mission was conducted in Switzerland. The results of the mission are currently being implemented, and it is planned to have an IRRS Follow-Up Mission in 2015. In October 2012, an OSART Mission to the Mühleberg NPP was completed. Switzerland participated in the European Stress Test and its Follow-Up activities.

Top Article


The Swiss Federal Nuclear Safety Inspectorate (ENSI) is taking part in the five-day General Conference of the International Atomic Energy Agency (IAEA). The IAEA member states will be meeting in Vienna for the event, from 25th to 29th September. The focus will be on global nuclear safety and security, and the crisis in Ukraine.

Read more

The Swiss Federal Nuclear Safety Inspectorate (ENSI) is participating in a two-day symposium in Japan: The “International Conference on Regulators Views and Priorities on Nuclear Safety and Radiation Protection 10 Years After TEPCO Fukushima Daiichi NPS Accident” will take place in Tokyo on 28 and 29 November 2022.

Read more

More News

Background Articles

At the time of the fateful accident in Fukushima, Doris Leuthard was head of the Federal Department of the Environment, Transport, Energy and Communications (DETEC). To commemorate the tenth anniversary of the nuclear disaster, the former Federal Councillor explains why it was essential to provide political support for nuclear safety after the accident.

Read more

IAEA Building in Vienna

After the accident at Fukushima, there was an increasing demand for international safety standards and their international monitoring. Switzerland, and in particular ENSI, was committed to mandatory backfitting on a global basis. Even if such safety principles are still not legally binding, the reactor accident acted as a booster for a new safety awareness amongst the international community.

Read more

«The safety authorities cultivate a frank exchange of information. Swiss experts, for instance, support French colleagues during inspections of their nuclear power plants – and vice-versa. In this way we learn from each other and share our wealth of experience for the benefit of all countries.»

Read more

More Background Articles


Show all documents