Analysis of radwaste management alternatives during dismantling of Ignalina NPP systems with low level contamination
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G. Poskas
Abstract
Ignalina NPP was operating two RBMK-1500 reactors which are under decommissioning now. In this paper, analysis on radwaste management alternatives during the dismantling of systems with low level contamination and different types of components in buildings 117/1 and V1 are presented. After situation analysis and collection of the primary information related to components' physical and radiological characteristics, location and other data, two alternatives for radwaste management during the dismantling were formulated and evaluated: the first one (A1) when the decontamination of the dismantled components is performed (if it is reasonable), and the second one (A2) when no decontamination of the dismantled components is performed and after the dismantling, the components are routed to appropriate waste storage or disposal sites. To select the preferable alternative, MCDA method – AHP (Analytic Hierarchy Process) is applied. Hierarchical lists of decision criteria, necessary for assessment of alternatives performance, are formulated. Quantitative decision criteria values for these alternatives are calculated using software DECRAD, which was developed by Lithuanian Energy Institute Nuclear Engineering Laboratory. Qualitative decision criteria are evaluated using expert judgment. Analysis results show that alternative A1 has a preference against alternative A2.
Kurzfassung
Das Ignalina-Kernkraftwerk hatte zwei RBMK-1500 Reaktoren betrieben, die sich zur Zeit im Rückbau befinden. In diesem Beitrag werden Analysen von Radwaste Management Alternativen während des Rückbaus der Systeme mit niedrigem Kontaminationslevel und verschiedenen Arten von Komponenten in den Gebäuden 117/1 und V1 vorgestellt. Nach einer Analyse der Situation und der Sammlung primärer Informationen in Bezug auf die physikalischen und radiologischen Eigenschaften der Komponenten, der Standorte und weiteren Daten, wurden zwei Alternativen für das Radwaste Management während des Rückbaus formuliert und bewertet: die erste Option (A1), wenn eine Dekontamination der demontierten Komponenten durchgeführt wird und die zweite Option (A2), wenn keine Dekontamination der demontierten Komponenten durchgeführt wird und die Komponenten nach der Demontage zu geeigneten Deponien und Lagerplätzen weitergeleitet werden. Zur Auswahl der bevorzugten Alternative wurde die MCDA Methode – AHP (Analytic Hierarchy Process) angewendet. Dabei werden hierarchisch angeordnete Listen mit Entscheidungskriterien formuliert. Für beide Alternativen wurden Werte für die Entscheidungskriterien mit Hilfe der vom Lithuanian Energy Institute Nuclear Engineering Laboratory entwickelten Software DECRAD berechnet. Qualitative Entscheidungskriterien werden nach Sachverständigenurteil bewertet. Die Ergebnisse der Analyse zeigen, dass die Alternative A1 gegenüber der Alternative A2 bevorzugt wird.
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© 2013, Carl Hanser Verlag, München
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Articles in the same Issue
- Contents/Inhalt
- Contents
- Summaries/Kurzfassungen
- Summaries
- Technical Contributions/Fachbeiträge
- Development of inflatable seals for the rotatable plugs of sodium cooled fast breeder reactors: a review – Part II: R&D necessities and development across the world
- Analysis of radwaste management alternatives during dismantling of Ignalina NPP systems with low level contamination
- Calculation of excitation functions for the production of Cu and Co medical isotopes
- Reliability assessment of the passive heat removal system of the VVER-1000 reactor at Kudankulam NPP
- Calculation of the neutronic behavior of minor actinides burning in a thermal research reactor using the MCNPX 2.6 code
- Steam drum level control studies of a natural circulation multi loop reactor
- Analyses in regulatory practice
- Technical Notes/Technische Mitteilungen
- Installation and measurement capacity of 3 × 592 GBq 241Am–Be neutron irradiation cell
- Calculation of the critical thickness for one-speed neutrons in a reflected slab with backward and forward scattering using modified TN method
