A main concern related to the peaceful use of nuclear energy is the safe management ofnuclear wastes, with particular attention to long-lived fission products. An increasing attention has recently been addressed to transmutation systems (Accelerator Driven System: ADS) able to burn the actinides and some of the long-lived fission products (High-Level Waste: HL W), transforming them in short or medium-lived wastes that may be easier managed and stored in the geological disposal, with the consequent easier acceptability by population. An ADS consists of a subcritical-core coupled with an accelerator by means of a target.This paper deals with the thermal-hydraulic analysis, performed with STAR-CD and RELAP5 codes far the windowless target unit of Lead-Bismuth Eutectic (LBE) cooled experimental ADS (XADS), both to assess its behaviour during operational and accident sequences and to provide input data far the thermal-mechanical analyses. It also reports a description of modifications properly implemented in the codes used far the assessment of this kind of plants.

Lead-Bismuth Eutectic Cooled Experimental Accelerator Driven System: Windowless Target Unit Thermal-Hydraylic Analysis

2004

Abstract

A main concern related to the peaceful use of nuclear energy is the safe management ofnuclear wastes, with particular attention to long-lived fission products. An increasing attention has recently been addressed to transmutation systems (Accelerator Driven System: ADS) able to burn the actinides and some of the long-lived fission products (High-Level Waste: HL W), transforming them in short or medium-lived wastes that may be easier managed and stored in the geological disposal, with the consequent easier acceptability by population. An ADS consists of a subcritical-core coupled with an accelerator by means of a target.This paper deals with the thermal-hydraulic analysis, performed with STAR-CD and RELAP5 codes far the windowless target unit of Lead-Bismuth Eutectic (LBE) cooled experimental ADS (XADS), both to assess its behaviour during operational and accident sequences and to provide input data far the thermal-mechanical analyses. It also reports a description of modifications properly implemented in the codes used far the assessment of this kind of plants.
Analisi sistemi e di sicurezza
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12079/4095
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
social impact