Preface [chapter]

Rehab O. Abdel Rahman, Michael I. Ojovan
2021 Sustainability of Life Cycle Management for Nuclear Cementation-Based Technologies  
Preface Nuclear/radioactive facilities are spreading worldwide to support human needs for energy and medical treatment and to support the industrial, agricultural, and research sectors. They include power and research nuclear reactor, isotope production laboratories, industrial irradiators, and spent fuel and waste management facilities. These facilities are in different life cycle phases. According to IAEA PRIS and IAEA RRDB databases, there are currently 443 power reactors in operational
more » ... with large number approaching their end of licensed operational life awaiting for operational life extension or decommissioning, and 192 power reactor and 150 research reactors in shutdown or under decommissioning. In all these facilities, cement-based systems, structures, and components (SSC's) are widely applied to provide and support different safety and security functions. Cement-based SSC's are essentially used to provide containment, support the structural stability, and enhance shielding under both normal and accidental conditions. They are designed to work passively over the life time of the facility, which ranges from several decades for nuclear power plants (NPP) and long-term storages to centuries for disposal facilities. This long-term passive operation and the severe work conditions can affect the sustainability of these SSC's, which requires an integrated life cycle management to ensure their sustainability toward a safe and secure practice of the nuclear facilities over their life cycle phases. Despite the extended operational experience with nuclear and nonnuclear cementitious SSC's in these facilities, there are many topics that still need to be studied and addressed. Among them are the need to develop more strengthening regulations, the need to address the age management as an integrated part of the life cycle management, the need to develop cementitious waste forms for the immobilization of problematic wastes, the need to find alternate cements for geological disposal, and the decommissioning of aged SSC's. In this book, the sustainability of the nuclear cement-based technologies is addressed by highlighting the legislative, administrative, and technical aspects that can affect their sustainability. This book consists of four parts. The first one introduces to the cementitious systems in nuclear industry; the second part presents the behavior of the cementitious systems and the factors that affect their sustainability; the third part presents the operation and maintenance of the cementitious systems and their contribution to the sustainability; and finally, the last part addresses the end of life cycle of these systems. This book focuses on conventional Portland cement-based SSC's as most of the existing facilities rely on them, yet innovative materials (i.e., calcium aluminates, calcium sulfoaluminates, and magnesium phosphate cements) are well addressed when possible. The first part includes three chapters that introduce the nuclear industry, basic principles, and its various applications to support the sustainability of human life and
doi:10.1016/b978-0-12-818328-1.09986-x fatcat:pudfsticrneihnctgcxkroq2xq