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  • 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.

    Events, Leibstadt Nuclear Power Plant, Nuclear Facilities
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  • News, Posts

    Findings on fuel elements in Leibstadt NPP: ENSI is classifying the incident as INES 1 and checking the submitted measures

    An inspection of fuel elements in Leibstadt NPP revealed that critical boiling states – so-called dryouts – had systematically occurred over several cycles. The Swiss Federal Nuclear Safety Inspectorate (ENSI) is classifying this incident as Level 1 on the International Nuclear and Radiological Event Scale (INES). It is currently checking the documents and actions submitted…

    Events, Leibstadt Nuclear Power Plant, Nuclear Facilities
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  • Events, Events Mühleberg

    KKM: Possible Blockage of the Special Emergency System Water Intake in case of Extreme Flooding (as at: 07.10.2011)

    As a measure following on from the reactor accident at Fukushima, Japan, ENSI ruled on 1 April 2011 that the Swiss nuclear power plant operators must furnish proof of their ability to control a very unlikely extreme flood, and must do so by the end of June 2011.

    Events, Mühleberg Nuclear Power Plant, Mühleberg nuclear power plant (decommissioned), Nuclear Facilities
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  • Events

    ENSI combines events and findings under the term “events”. Both events relevant to nuclear safety and security and events of public interest are subject to reporting. The latter includes events on the site of the nuclear installation that are perceptible from outside the site boundaries, regardless of their importance for nuclear safety. ENSI informs the…

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  • Kernkraftwerk Leibstadt mit Wiesenansicht
    Events, Events Leibstadt

    KKL: Automatic Turbine Shutdown (as at: 30.06 2011)

    A faulty resistor on an electronic card led to the failure of a module in the turbine control system. As a result, the control dampers on the low pressure turbines closed slowly.

    Events, Leibstadt Nuclear Power Plant, Nuclear Facilities
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  • Events, Events Leibstadt

    KKL: Weld Seam Leak on Small-Bore Pipe of the High Pressure Core Spray (CS) System (as at: 13.04.2011)

    During a function test on the high pressure core spray (CS) system, a thin jet of water was detected. This jet emerged from a weld seam on a small-bore pipe leading to a safety valve. The function test was interrupted, and the affected section of the small-bore pipe was replaced within the permissible time for…

    Events, Leibstadt Nuclear Power Plant, Nuclear Facilities
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