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    Reactor physics
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    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
    NEA Document
    Benchmark for Uncertainty Analysis in Modelling (UAM) for Design, Operation and Safety Analysis of Light Water Reactors: Volume I. Neutronics Phase (Phase I)
    NEA/NSC/R(2021)5

    Since the early 2000s there is an increasing demand from nuclear research, industry, safety and regulation for best-estimate predictions to be provided with their confidence bounds. Consequently, an ...

    Reactor physics NSC Nuclear science EGPRS WPRS Nuclear science Benchmark …
    Published date: 18 April 2023
    NEA Document
    Benchmark Specifications for the Fluoride-salt High-temperature Reactor (FHR) Reactor Physics Calculations
    NEA/NSC/R(2020)5

    This benchmark focuses on FHR reactors with plates and triso fuel. Several phases are planned, starting with neutronics on a simple fuel element simulation without burn-up, and gradually extending to...

    Reactor physics Nuclear science EGPRS Verification WPRS Nuclear science Reactor physics …
    Published date: 4 June 2021
    News
    Benchmarking state-of-the art nuclear reactor simulations

    The annual WPRS Benchmarks Workshops took place on 22-26 May 2023 in Bologna, Italy.

    Reactor physics Nuclear science WPRS Multiphysics Nuclear science Benchmark Thermal hydraulics and mechanics Reactor physics Reactor fuel performance Multiphysics …
    Published date: 13 June 2023
    News
    Benchmarking, single and multi-physics modelling and simulation tools for nuclear reactor analysis

    NEA Working Party on Scientific Issues of Reactor Systems (WPRS) workshops, 7-15 December 2020.

    Reactor physics News brief Nuclear science Reactor physics
    Published date: 17 December 2020
    NEA Document
    Benchmarks for Uncertainty Analysis in Modelling (UAM) for the Design, Operation and Safety Analysis of LWRs - Volume I: Specification and Support Data for Neutronics Cases (Phase I)
    NEA/NSC/DOC(2013)7
    English Reactor physics NSC Nuclear science EGPRS WPRS Nuclear science Reactor physics …
    Published date: 16 May 2013
    Publications and Reports
    Boiling Water Reactor Turbine Trip (TT) Benchmark - Volume II

    In the field of coupled neutronics/thermal-hydraulics computation there is a need to enhance scientific knowledge in order to develop advanced modelling techniques for new nuclear technologies and co...

    English Reactor physics Boiling water reactors Nuclear science Nuclear science Benchmark Reactor physics Multiphysics …
    Published date: 7 July 2005
    Publications and Reports
    Boiling Water Reactor Turbine Trip (TT) Benchmark - Volume III

    In the field of coupled neutronics/thermal-hydraulics computation there is a need to enhance scientific knowledge in order to develop advanced modelling techniques for new nuclear technologies and co...

    English Reactor physics Boiling water reactors Nuclear science Benchmark Reactor physics Multiphysics …
    Published date: 21 December 2006
    NEA Document
    Burn-up Credit Criticality Studies: Benchmark Analyses for Pressurised Water Reactors
    NEA/NSC/R(2016)1
    English Nuclear science Criticality WPNCS WPRS Multiphysics Reactor physics Multiphysics EGMUP Reactor physics Criticality safety NSC Nuclear science …
    Published date: 23 February 2016
    News
    Challenging state-of-the art thermal hydraulics simulation capabilities for high temperature gas-cooled reactors

    Kick-off workshop of the thermal hydraulic code validation benchmark for high temperature gas-cooled reactors using High Temperature Test Facility (HTTF) data.

    News brief Nuclear science WPRS Thermal hydraulics and mechanics EGTHM Reactor physics Reactor physics NSC Thermal hydraulics Nuclear science Benchmark …
    Published date: 16 June 2023
    NEA Document
    Computing Radiation Dose to Reactor Pressure Vessel and Internals: State-of-the-Art Report
    NEA/NSC/DOC(1996)5

    The OECD/NEA Nuclear Science Committee Task Force on Computing Radiation Dose and Modelling of Radiation-induced Degradation of Reactor Components was set up in November 1995 in response to a request...

    English Reactor physics NSC Radiation shielding Radiation Nuclear science Radiation safety Radiation transport and shielding Reactor physics …
    Published date: 1 January 1996
    NEA Document
    Coupled Neutronic/Thermal-Fluid Benchmark of the MHTGR-350 MW Core Design: Results for Phase I Exercise 1
    NEA/NSC/R(2019)5
    Reactor physics NSC Nuclear science EGPRS WPRS Nuclear science EGTHM Reactor physics EGMUP …
    Published date: 12 October 2020
    NEA Document
    Coupled Neutronic/Thermal-Fluid Benchmark of the MHTGR-350 MW Core Design: Results for the Lattice Physics Exercises
    NEA/NSC/R(2019)6

    The purpose of this prismatic High Temperature Reactor (HTR) benchmark is to provide a solution set that can be used in future code benchmarking and to better understand the effects induced by the pr...

    English Nuclear science WPRS Multiphysics EGTHM Reactor physics Multiphysics EGMUP Reactor physics NSC EGPRS Nuclear science …
    Published date: 18 November 2021
    News
    Discussing radiation shielding, novel accelerator experiments and radiation physics simulations

    The event gathered 129 participants from 75 international institutions.

    Reactor physics News brief Nuclear science Radiation shielding EGPRS WPRS Radiation transport and shielding Reactor physics …
    Published date: 6 October 2022
    News
    Discussing scientific issues and uncertainty analysis of nuclear reactor systems

    WPRS gathered 172 experts from 22 countries at the annual Benchmark Workshop.

    Nuclear fuel Reactor physics News brief Sodium-cooled reactor Light water reactors EGPRS WPRS Reactor physics Multiphysics …
    Published date: 9 June 2022
    News
    Enhancing the NEA Shielding Integral Benchmark Archive and Database (SINBAD)

    EGPRS Task Force members met on 3 April 2023.

    Reactor physics News brief NSC Nuclear science Radiation shielding EGPRS SINBAD WPRS Reactor physics …
    Published date: 7 April 2023
    NEA Document
    Existing Practices for Multi-physics Validation: Report on Sub-Task 3, Task Force 2
    NEA/NSC/R(2019)7

    The modelling and simulation of nuclear systems allow scientists and engineers to probe aspects of the operation of these systems beyond what has been precisely measured. This has numerous applicatio...

    Reactor physics Nuclear science WPRS Multiphysics Nuclear science Benchmark Reactor physics Multiphysics EGMUP …
    Published date: 11 October 2022
    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
    Activity
    Expert Group on Reactor Fuel Performance (EGRFP)

    Under the guidance of the Working Party on Scientific Issues and Uncertainty Analysis of Reactor Systems (WPRS) the expert group performed from 2011-2024 specific tasks associated with fuel performan...

    Nuclear fuel Reactor physics EGRFP Reactor physics
    Published date: 5 May 2025
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