Approach to spatial integration on a novel and complex major project – STEP concept Tokamak

Abstract

The purpose of this work was to establish an approach to drive the development, at pace, of a commercially relevant Spherical Tokamak Concept. Building on the table of parameters and idealised geometry generated from the work of S. Muldrew et al. [1], applying core principles, tools, and approaches. The generation and utilisation of a reflective 3D Spatial Model to represent the current concept, now forms a strong basis for identifying, evaluating, and delivering future integrated decisions, developed within a 16 Month timeframe.STEP is an ambitious programme, tasked with delivering a prototype plant by 2040 as a pathway to commercial fusion energy. Tackling the integration of a system that itself is based on emergent technologies, significant assumptions (e.g. Plasma Physics) and uncertainties is a significant challenge whilst maintaining acceptable levels of commercial relevance and feasibility. This paper shares the developments and approaches to collaboration and communication taken, including the management of a graphical representation (CAD or Computer Aided Design) to overcome this challenge.The work conducted has resulted in a single point CAD (utilising CATIA software) model representing the current integration status including an appropriate approach to configuration management. Clear channels and methods of communication nurtured a successful collaborative and cross-functional integration approach. Transitioning swiftly from an externally driven approach to integration, to an inherent, self-orchestrating one across all system areas. This paper presents results as a single point Concept Design for the Integrated Tokamak, a strategic management approach, technological integration challenges (e.g. Services, Maintenance, Neutronics) faced, and considerations for the future (post concept design).Introducing a centralised design process, appropriate control and clear communication utilising CAD has been the key to maturing the STEP Tokamak Concept. Initial focus on facilitating collaboration and utilising this environment as a ‘sandbox’ enabled early establishment of a ‘space-claim’ concept design in which to iterate. Staging the integration approach and CAD model fidelity developments through ‘Identification, Realisation and Accommodation’ built a resilient foundation to progress through the full design process. This approach has enabled early identification of not only where the integration challenges lay but also their significance, resulting in strategic deployment of valuable resource.