The German nuclear power plant ISAR 1 ( KKI 1), a 878 MWe boiling water reactor of KWU design, was shut down on March 17, 2011. Maschinentechnik Volkmann, Christian [ESG Engineering Services GmbH, Greifswald (Germany) Chemistry Services Erbacher, Thomas Hiermer, Thomas Schnurr, Bernhard Appeldorn, Thomas van [E.ON Kernkraft GmbH, Kernkraftwerk ISAR, Essenbach (Germany). der Einbauten wie Dampftrockner und Wasserabscheider sowie der angeschlossenen Hilfssysteme im deutschen Siedewasserreaktor ISAR 1Įnergy Technology Data Exchange (ETDEWEB)įischer, Michael Sempere Belda, Luis Basu, Ashim Topf, Christian [AREVA GmbH, Erlangen (Germany). (orig.)ĭecontamination of the reactor pressure vessel and further internals and auxiliary systems in the German boiling water reactor Isar-1 Dekontamination des RDB inkl. These events are considered because they may have a not negligible influence on the frequency of core damage states in case of failures during the plant shut down because of the reduced redundancy of safety related systems. The Fire-PSA considers events, which will result due to fire-induced failures of equipment on the one hand in a SCRAM and on the other hand in events, which will not have direct operational effects but because of the fire-induced failure of safety related installations the plant will be shut down as a precautionary measure. Based on simplistic assumptions referring to the fire induced failures, the influence of system- and component-failures on the frequency of the core damage states was analysed. #Iina massini fullThe aim of the plant specific Fire-PSA was to perform a quantitative assessment of fire events during full power operation, which is state of the art. The 'Probabilistic Safety Analysis for Fire Events' (Fire-PSA KKI 2) for the NPP Isar 2 was performed in addition to the PSA for full power operation and considers all possible events which can be initiated due to a fire. Probabilistic safety analysis for fire events for the NPP Isar 2 Besides plant technology also organization and administration were permanently advanced and adapted to changing requirements so as to safeguard reliable, safe, and non-polluting plant operation. However, high plant safety and availability must not be taken for granted, but are the result of responsible, safety-minded plant operation combined with continuous plant optimization and permanent execution of comprehensive checks, inspections, and maintenance measures. This, in turn, is based on short revision times and faultfree plant operation. A plant performance as impressive as this necessitates a plant availability far above the average. In its 25 years of power operation the Isar- 2 nuclear power plant has recorded the highest annual gross electricity production of all nuclear power plants in the world nine times so far. This amount of electricity, theoretically, could supply some 3 million three person households, or meet two thirds of the electricity requirement of the Bavarian industry, for one year. 15 % in the cumulated Bavarian electricity production. 12 billion kWh corresponds to a share of approx. The annual electricity production of KKI 2 of approx. In these past 25 years the plant generated a total of approx. The Isar- 2 nuclear power station ( KKI 2) began commercial power operation on April 9, 1988. International Nuclear Information System (INIS) Isar- 2 nuclear power station twenty-five years
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