This paper concerns the cutting operations and spread of radioactive contamination during the dismantling of a nuclear metal component, carried on with thermal cutting. Our analysis relates to E. Fermi nuclear power plant (Trino Vercellese, Italy), a Pressurized Water Reactor, which had an electrical power of 272MWe, and was in operation from 1965 to 1987. The plant included four primary loops and a pressurizer, each loop equipped with a circulation pump and a steam generator. The criteria for choosing between all the cutting technologies available for dismantling a nuclear component are considered, as well as the methodology allowing the characterization of the primary system. Some cutting scenarios are proposed, with a calculation methodology to evaluate the amount of material involved in main components segmentation. Afterwards, exposition risks are highlighted and the possibility of safely cutting this system is pointed out.

Radioactivity release and dust production during the cutting of the primary circuit of a nuclear power plant. The case of E. Fermi NPP / Bonavigo, Lucia; DE SALVE, Mario; Zucchetti, Massimo; Annunziata, D.. - In: PROGRESS IN NUCLEAR ENERGY. - ISSN 0149-1970. - STAMPA. - 52:4(2010), pp. 359-366. [10.1016/j.pnucene.2009.07.009]

Radioactivity release and dust production during the cutting of the primary circuit of a nuclear power plant. The case of E. Fermi NPP

BONAVIGO, LUCIA;DE SALVE, Mario;ZUCCHETTI, MASSIMO;
2010

Abstract

This paper concerns the cutting operations and spread of radioactive contamination during the dismantling of a nuclear metal component, carried on with thermal cutting. Our analysis relates to E. Fermi nuclear power plant (Trino Vercellese, Italy), a Pressurized Water Reactor, which had an electrical power of 272MWe, and was in operation from 1965 to 1987. The plant included four primary loops and a pressurizer, each loop equipped with a circulation pump and a steam generator. The criteria for choosing between all the cutting technologies available for dismantling a nuclear component are considered, as well as the methodology allowing the characterization of the primary system. Some cutting scenarios are proposed, with a calculation methodology to evaluate the amount of material involved in main components segmentation. Afterwards, exposition risks are highlighted and the possibility of safely cutting this system is pointed out.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2281152
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