Swiss federal authorities

Leibstadt Nuclear Power Plant

Type: Boiling water reactor BWR/6

Start of commercial operations: 1984

Nominal thermal output of reactor: 3600 MW

Gross electrical output: 1285 MWe

Net electrical output: 1233 MWe

 

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News

  • News, Posts

    2023 Oversight Report: The safety status of the nuclear power plants is good

    ENSI verified the status of the Swiss nuclear power plants by 327 inspections. In 2023, the year under review, 22 reportable nuclear-safety-relevant incidents were recorded at the nuclear power plants. ENSI provides detailed information in the oversight report published today.

  • Delegation der spanischen Aufsichtsbehörde.
    News, Posts

    The Spanish regulatory authority and ENSI in talks on radiation protection

    From 6 to 8 May 2024, a delegation from the Spanish regulatory authority visited ENSI. Discussions focused on the topic of radiation protection, in particular exchanging of experience relating to the Leibstadt NPP and to the Mühleberg NPP, which is currently being dismantled.

  • KKB Beznau
    News, Posts

    Leibstadt and Beznau nuclear power plants can withstand infrequent severe earthquakes

    Both Leibstadt and Beznau nuclear power plants have shown that, in the event of or after a very severe earthquake, they can ensure that their reactors are stable and safe. Dose values of one or 100 millisievert which have to be complied with will not be exceeded even after earthquakes that are only to be…

  • Background articles, News, Posts

    All Swiss nuclear power plants comply with the updated earthquake safety standards

    For the second time since the Fukushima accident in 2011, power plant operators have demonstrated that their plants are capable of withstanding an extremely rare, severe earthquake. The safety case for a flood caused by an earthquake has also been checked. The findings from the safety proofs generated in the aftermath of Fukushima have been…

  • News, Posts

    Quality assurance errors relating to some fuel rods in the Leibstadt Nuclear Power Plant

    A few days ago, Leibstadt Nuclear Power Plant (KKL) informed the Swiss Federal Nuclear Safety Inspectorate (ENSI) that some fuel elements do not fulfil the requirements of the applicable specifications. Accordingly, KKL decided to replace them for safety reasons. The safety of man and the environment was ensured at all times.

  • News, Posts

    “Cladding tube damage poses no risk to mankind or the environment”

    The Swiss Federal Nuclear Safety Inspectorate (ENSI) has issued Leibstadt Nuclear Power Plant (KKL) approval to restart subject to conditions. The conditions under which dryouts have occurred at KKL are known. KKL has instigated counter measures. Consequently operation is safe. In an interview Ralph Schulz, Director of the Safety Analyses Division, shares some background insights.

Background Articles

  • Background articles, Posts

    Dryout: Preventing inadequate cooling of fuel rods

    Heat is generated in the reactor as a result of nuclear fission. To guarantee optimum cooling of the fuel rods, their cladding tubes must always be covered with a film of water. If they are not completely covered with water in specific areas, this is referred to as “dryout”.

Documents