Sulphur-Assisted Corrosion in Nuclear Disposal Systems

ISBN-13: 9781907975172 / Angielski / Miękka / 2011 / 192 str.

Frank Druyts; Bruno Kursten

Opis

In the different disposal concepts for high-level nuclear waste, corrosion of the metallic barriers and in particular the overpack/container is a major issue. It is imperative for performance assessment to predict the lifetime of these containers. In the lifetime prediction of metallic barriers for the disposal of high level nuclear waste (HLW) or of spent fuel, the presence of (reduced) sulphur species is an issue of growing importance, as the sulphur species are involved in localised corrosion phenomena.The international workshop on Sulphur-Assisted Corrosion in Nuclear Waste Disposal Systems (SACNUC2008) aimed to provide an exchange of information on the influence of sulphur species on the corrosion of metallic barriers. This workshop was a co-organisation of the Belgian Nuclear Research Centre, SCKoCEN, and the Belgian Agency for the Management of Radioactive Waste and Enriched Fissile Materials, ONDRAF/NIRAS, under the auspices of the European Federation of Corrosion (EFC event N 311).The proceedings are divided into five chapters: Chapter 1 provides a general overview of the disposal concepts of nuclear waste and the role of corrosion. Chapter 2 explains the mechanism of sulphur-induced corrosion processes. This chapter also contains information from outside the nuclear disposal field in which sulphur is known to act as a detrimental factor (e.g. oil and gas industry). Chapter 3 addresses the role of microbial processes in sulphur-assisted corrosion. Chapter 4 covers the modelling of sulphide-assisted corrosion. Chapter 5 is devoted to a panel discussion aiming to identify open issues in the investigation of sulphur-assisted corrosion phenomena and how to incorporate these in robust lifetime prediction of metallic barriers."

Spis treści

Section 1 - Disposal concepts of nuclear waste and the role of corrosion 1 The Belgian Supercontainer concept – corrosion issues Section 2 - Sulphur-induced corrosion processes from within and outside the nuclear disposal field 2 Sulphur chemistry of the near-field Boom Clay environment 3 Corrosion mechanisms and material performance in environments containing hydrogen sulfide and elemental sulfur 4 Lifetime prediction of metallic barriers in nuclear waste disposal systems: overview and open issues related to sulphur-assisted corrosion 5 The anaerobic corrosion of carbon steel and the potential influence of sulphur species 6 The influence of chloride on the corrosion of copper in aqueous sulphide solutions 7 Interactions between sulphide species and components of rust Section 3 - Role of microbial processes in sulphur-assisted corrosion 8 Experimental investigation of the impact of microbial activity on the corrosion resistance of candidate container materials vi Contents Section 4 - Modelling of corrosion 9 Reactive-transport modelling of the sulphide-assisted corrosion of copper nuclear waste canisters Section 5 - Panel discussion Sulphur-related issues in deep underground nuclear waste disposal systems

O autorze

Frank Druyts (Edited by) Damien Feron (Edited by) Bruno Kursten (Edited by)