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Working Party on Scientific Issues and Uncertainty Analysis of Reactor Systems (WPRS)

The Working Party on Scientific Issues and Uncertainty Analysis of Reactor Systems (WPRS) studies the reactor physics, thermal hydraulics, radiation transport and shielding, and multiphysics aspects ...

Multi-physics simulations Fuel studies Light water reactors Artificial Intelligence WPRS Advanced reactors Reactor physics Multiphysics Reactor physics Machine Learning Thermal hydraulics Uncertainty quantification Pressurised heavy water reactors …
Published date: 5 May 2025
Activity
Benchmark Activities on Reactor Single- and Multi-Physics of the Working Party on Scientific Issues and Uncertainty Analysis of Reactor Systems (WPRS)

The Working Party on Scientific Issues and Uncertainty Analysis of Reactor Systems (WPRS) and its expert groups co-ordinate benchmark activities on Reactor Single- and Multi-Physics. The benchmark ac...

Multi-physics simulations Boiling water reactors Nuclear science Light water reactors Artificial Intelligence Liquid metal reactors WPRS Advanced reactors Reactor physics Machine Learning Verification and validation Uncertainty quantification Benchmark Pressurised water reactors …
Published date: 11 December 2024
Activity
Expert Group on Physics of Reactor Systems (EGPRS)

Under the guidance of the Working Party on Scientific Issues and Uncertainty Analysis of Reactor Systems (WPRS), the Expert Group on Physics of Reactor Systems (EGPRS) performs specific tasks associa...

Reactor physics Molten salt reactors Light water reactors EGPRS Pressurised heavy water reactors Reactor physics …
Published date: 11 December 2024
Activity
Expert Group on Reactor Core Thermal-Hydraulics and Mechanics (EGTHM)

Created in 2019, under the guidance of the Working Party on Scientific Issues of Reactor Systems (WPRS) the expert group will perform specific tasks associated with core thermal-hydraulics aspects of...

Reactor physics Sodium-cooled reactor Molten salt reactors Light water reactors Thermal hydraulics WPRS Reactor physics …
Published date: 11 December 2024
News
SMR News brief Small modular reactors Light water reactors Nuclear technology Nuclear technology Regulation of new and advanced reactors Nuclear safety regulation …
Published date: 20 June 2024
Activity
Pellet-Cladding Mechanical Interaction (PCMI) Benchmark

The aim of the benchmark is to improve understanding and modelling of pellet-cladding mechanical interaction (PCMI) amongst NEA member organisations. This is achieved by comparing PCMI predictions of...

Nuclear fuel Reactor physics Light water reactors EGRFP Benchmark Reactor physics …
Published date: 30 May 2024
Publications and Reports
Benchmark Study on Pellet-Cladding Mechanical Interaction in Light Water Reactor Fuel Volume 2: Validation of Beginning-of-Life Power Ramping (Case 3)

Many of the failures that occur in nuclear fuel rods in light water reactors around the world are caused by the phenomenon of mechanical interaction between pellets and cladding (PCMI). The process i...

English Nuclear science Light water reactors EGRFP WPRS Nuclear science Benchmark Reactor fuel performance …
Published date: 30 April 2024
Publications and Reports
Benchmark Study on Pellet-Cladding Mechanical Interaction in Light Water Reactor Fuel: Volume 1. Hypothetical Beginning-of-Life Power Ramps (Cases 1 and 2)

Many of the failures that occur in nuclear fuel rods in light water reactors around the world are caused by the phenomenon of mechanical interaction between pellets and cladding (PCMI). The process i...

English Nuclear science Light water reactors EGRFP WPRS Nuclear science Benchmark Reactor fuel performance …
Published date: 30 April 2024
Activity
Neutronics/Thermal-hydraulics Coupling in Light Water Reactor (LWR) Technology (CRISSUE-S)

The CRISSUE-S Project was created to re-evaluate fundamental technical issues with the technology of light water reactors (LWRs).

Nuclear science Light water reactors
Published date: 2 November 2023
Activity
Benchmark for Uncertainty Analysis in Best-Estimate Modelling for Design, Operation and Safety Analysis of Light Water Reactors (LWR-UAM)

The goal of the Benchmark for Uncertainty Analysis in Best-Estimate Modelling for Design, Operation and Safety Analysis of Light Water Reactors (LWR-UAM) is to determine the uncertainty in light wate...

Modelling and simulation Reactor physics Light water reactors Verification and validation Validation Uncertainty quantification Uncertainty analysis Benchmark Reactor physics Pressurised water reactors …
Published date: 25 April 2023