The International Fusion Materials Irradiation Facility (IFMIF) will be equipped with a lithium Target Assembly (TA) to produce the required neutron flux for the irradiation of candidate fusion materials up to a damage rate of 100 dpa (cumulated damage in five years). Due to this severe operating condition the TA has to be refurbished at least one time per year. Nevertheless this maintenance operation could be required more frequently. The design for remotely operated connections of the bayonet target is focusing on the use of clamped flanges with a sealing metal gasket. Accordingly the European IFMIF Target assembly system has been designed to be connected with the main lithium pipes and to the beam line by means of Fast Disconnecting System (FDS). So far similar systems, already commercially available, have been used for several types of applications including nuclear ones, even if never used neither under the IFMIF like operating conditions nor fully remotely. This document defines the design requirements of the FDS to satisfy the operational working condition foreseen for IFMIF in terms of functionalities, safety and maintainability. In particular this document describes the design of the FDS for the connections for the inlet pipe of the IFMIF Target Assembly.

Rapporto sulla progettazione dei sistemi di connessione rapida per tubazioni denominati FDS

Bernardi, Davide;Miccichè, Gioacchino
2012-09

Abstract

The International Fusion Materials Irradiation Facility (IFMIF) will be equipped with a lithium Target Assembly (TA) to produce the required neutron flux for the irradiation of candidate fusion materials up to a damage rate of 100 dpa (cumulated damage in five years). Due to this severe operating condition the TA has to be refurbished at least one time per year. Nevertheless this maintenance operation could be required more frequently. The design for remotely operated connections of the bayonet target is focusing on the use of clamped flanges with a sealing metal gasket. Accordingly the European IFMIF Target assembly system has been designed to be connected with the main lithium pipes and to the beam line by means of Fast Disconnecting System (FDS). So far similar systems, already commercially available, have been used for several types of applications including nuclear ones, even if never used neither under the IFMIF like operating conditions nor fully remotely. This document defines the design requirements of the FDS to satisfy the operational working condition foreseen for IFMIF in terms of functionalities, safety and maintainability. In particular this document describes the design of the FDS for the connections for the inlet pipe of the IFMIF Target Assembly.
Nuclear fusion;ITER Project
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.12079/6336
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