NURISP

NUclear Reactor Integrated Simulation Project

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 Obiettivo del progetto (Objective)

'The target of the proposed NURISP Collaborative Project is to make new and significant steps towards a European Reference Simulation Platform for applications relevant to present PWR and BWR and to future reactors. The roadmap of this Simulation Platform will be proposed to be part of the future Strategic Research Agenda of the Sustainable Nuclear Energy Technology Platform (SNE-TP). The first step towards this ambitious target has been made during the FP6 NURESIM Integrated Project. The NURISP project will start from this basis and develop further the already common and well-proven NURESIM informatics platform. It will also strengthen and enlarge the united team of top level international experts already federated during the NURESIM project and it will transform it into a European pole of excellence in reactor safety computation. The platform will provide a more accurate representation of the physical phenomena by developing and incorporating into “best estimate” codes the latest advances in core physics, two-phase thermal-hydraulics and fuel modelling. The project will also develop significant capacities for multiscale and multiphysics calculations, and for deterministic and statistical sensitivity and uncertainty analysis, facilitating their use in a generic environment. The individual models, solvers and codes integrated into the platform will be verified, validated and demonstrated through benchmarks (some of them using NEA or IAEA databanks) corresponding to present and future PWR, VVER and BWR challenging applications. Through the Users' Group, European Nuclear Utilities, Vendors, Technical Safety Organisations, Regulators, Universities and Research Labs will be able to share this reference tool, contribute to its qualification, and develop its potential; thus enabling an effective European Research Area to take a worldwide leading position in the numerical simulation of nuclear reactors.'

Introduzione (Teaser)

A reference platform for simulating applications relevant to nuclear reactors has been generated by a European consortium. The ultimate goal of the supporting project was to provide simple nuclear reactor safety computation tools.

Descrizione progetto (Article)

In order to meet growing energy demands, many countries are considering, or have already adopted, nuclear energy power plants. However, safety concerns remain regarding the construction of new plants and the maintenance of existing ones.

It is paramount importance to achieve a sustainable and secure energy supply, not only for society but also for Europe's economy and industry. Aiming to address this issue, the EU-funded collaborative project 'Nuclear reactor integrated simulation project' (Nurisp) developed a European reference simulation platform for applications relevant to nuclear reactors. The consortium's work was based on the Nuresim software platform, which was developed by the Sixth Framework Programme (FP6)-funded Nuresim study.

Among the project objectives was the generation of a platform that accurately represents relevant physical phenomena through an incorporation of the latest advances in reactor and core physics, two-phase thermal-hydraulics and fuel modelling. This platform also stands to offer the ability to perform multi-scale and multi-physics computations, especially for coupling core physics and thermal-hydraulics models for reactor safety.

The 'best estimate' tools for reactor safety and next generation reactor design were developed, implemented and tested against several types of nuclear reactors (PWR, BWR and VVER). Additionally, Monte-Carlo techniques were developed for long-time kinetics and dynamic calculations.

The thermal-hydraulic tools will beused to investigate safety issues, including pressurised thermal shock, critical heat flux and accidents involving loss of coolant. The advanced thermal-hydraulic numerical simulation tools for reactor safety are expected to contribute to a European pole of excellence in reactor safety computations.

Another aim of the project was to develop new experimentally predictive tools that could be applied in the design of new technologies and facilities based on novel processes. This would avoid the costly and lengthy procedures of building representative mock-up experiments.

Overall, the extended Nuresim platform is expected to become a reference tool for universities, research labs, technical safety organisations and the nuclear industry.