Codes and standards and regulation issues for design and construction of the ITER mechanical components

A coherent set of Codes and Standards (C&S) for the ITER structures, system and components is needed to fulfil the safety and licensing requirements, and to provide the specified quality of the mechanical components manufactured by the different ITER Parties. In general the basic regulatory documents do not specify particular design and manufacturing codes, but for pressure equipment general Essential Safety Requirements are formulated and the means to fulfil them from a technical and legal point of view are given. This paper presents requirements for the ITER pressure and nuclear pressure equipment. It describes the selection of Codes and Standards for the mechanical components. Available industrial codes and standards (e.g. ASME, RCC-MR, and European standards) are selected for ITER components. For components not covered by conventional codes, specific structural design criteria and technical specifications have been developed. The remaining issues discussed are related to the completion of the specific C&S and the assessment of conformity with regulatory requirements before and during construction of the components.