Source: https://tendernation.io/opportunities/01a13be4-ade7-7158-bf8f-b02a849d9e10/step-vapour-shielding-scenario-simulation pending GB open procedure # STEP Vapour Shielding Scenario Simulation [UK Industrial Fusion Solutions Ltd](https://tendernation.io/buyers/uk-industrial-fusion-solutions-ltd) Estimated value £200,000 Published 16 Jul 2026 Deadline Rolling deadline ## Who can bid - Open procedure Anyone can submit a full tender; there is no shortlisting stage. ## About this tender This Market Engagement Notice seeks engagement with organisations capable of delivering reactor-scale vapour shielding modelling to support the STEP prototype powerplant programme. The work will investigate vapour shielding effects arising from transient plasma events and their impact on plasma-facing components, informing design, protection systems, and operational strategies. The scope is divided into four sequential phases covering: (A) initial assessment of limiter strike scenarios and architecture risks; (B) expanded analysis of transient scenarios, material degradation, and mitigation strategies; (C) development of engineering models and lifetime assessments for plasma-facing components and (D) assessment of combined transient hazards and their implications for protection system design. Suppliers must submit proposals for Phase A, with separate pricing for Phases B and C, while Phase D will focus on future capability without pricing at this stage. Suppliers are expected to demonstrate access to established reactor-scale vapour shielding modelling frameworks, with work progressing through successive phases subject to technical outcomes, funding availability, and STEP programme priorities. For more information about this opportunity, please visit the eSourcing portal at: [ukifs.delta-esourcing.com](https://ukifs.delta-esourcing.com/tenders/UK-UK-Abingdon:-Research-and-experimental-development-services./2ZAK72P477) To respond to this opportunity, please click here: [ukifs.delta-esourcing.com/respond/2ZAK72P477](https://ukifs.delta-esourcing.com/respond/2ZAK72P477) Read full description ## CPV classification Research and experimental development services Research services Research laboratory services Experimental development services Test and evaluation Source Find a Tender (UK) · Notice ocds-h6vhtk-06cd3a-2026-07-16T16:36:04+01:00 [View official notice](https://www.find-tender.service.gov.uk/Notice/ocds-h6vhtk-06cd3a-2026-07-16T16:36:04+01:00) Never miss a tender like this again Get AI summaries, deadline alerts and a bid pipeline for tenders matched to your business. Free to start. 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