Can I read Closure lid design and structural integrity assessment of Swiss nuclear waste canisters on EtoBox?

Closure lid design and structural integrity assessment of Swiss nuclear waste canisters by Michael R. Roy; Yin Jin Janin; Rachel Lunn; Longjie Wang; Philippe Bastid; Nikitas Diomidis is a Engineering article available to read on EtoBox.

What is Closure lid design and structural integrity assessment of Swiss nuclear waste canisters about?

In the past decade, TWI has been working together with Nagra (the Swiss national cooperative responsible for the disposal of radioactive waste) to develop design concepts for canisters for the disposal of Spent Fuel (SF) and High Level Waste (HLW) in a deep geological repository. The canisters must provide containment of radionuclides for more than 10,000 years. Several different canister designs have been investigated. A forged carbon steel canister is the current reference design. In the framework of options evaluation and optimisation, this study summarises the work carried out to determine the structural integrity of a closure weld during long-term disposal. An analytical study on the lid and weld design for the closure weld and final materials selection have been undertaken. The lid and closure weld designs were refined to avoid heating the nuclear waste above its allowable temperature during post-weld heat treatment (PWHT). Flaw assessments in accordance with the procedures and guidance given in BS 7910, along with finite element analyses (FEA), were used to identify the most suitable combination of PWHT and lid design to ensure no breach of containment within 10,000 years.

Who reads Closure lid design and structural integrity assessment of Swiss nuclear waste canisters?

Author

Michael R. Roy; Yin Jin Janin; Rachel Lunn; Longjie Wang; Philippe Bastid; Nikitas Diomidis

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Engineering (Physical Sciences)