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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, fuel performance, and radiation transport and shielding in present and future nu...

Nuclear fuel Reactor physics Multi-physics simulations Fuel studies Light water reactors Thermal hydraulics WPRS Pressurised heavy water reactors Reactor physics Multiphysics …
Published date: 18 July 2023
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: 8 June 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
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: 19 October 2022
Activity
Expert Group on Accident-tolerant Fuels for Light Water Reactors (EGATFL)

The expert group primarily acted as a forum for scientific and technical information exchange on advanced light water reactor (LWR) fuels with enhanced accident tolerance.

Fuel studies NSC Nuclear science Light water reactors EGATFL Accident Tolerant Fuels Accident tolerant fuels …
Published date: 18 October 2022
NEA Document
NEA CODAP Project Topical Report: A Review of the "Post-1998" Experience with Thermal Fatigue in Heavy Water and Light Water Reactor Piping Components
NEA/CSNI/R(2019)13

Since its inception in 2002, the operating experience with thermal fatigue mechanisms has been an intrinsic aspect of the technical scope of CODAP, which is a joint database project within the Commit...

Nuclear safety Light water reactors Information, data and knowledge management CSNI PRG Databases CSNI Joint project Safety Technology Safety research …
Published date: 11 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
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: 23 March 2022
Activity
Expert Group on Uncertainty Analysis in Modelling (EGUAM)

The expert group provided advice to the Working Party on Scientific Issues of Reactor Systems (WPRS) on the scientific development needs (data and methods, validation experiments, scenario studies) o...

EGUAM Boiling water reactors Nuclear science Light water reactors WPRS Reactor physics Modelling and simulation Reactor physics Uncertainty quantification Uncertainty analysis Benchmark Pressurised water reactors …
Published date: 27 October 2021
Publications and Reports
Nuclear Safety Research Support Facilities for Existing and Advanced Reactors: 2021 Update

Experimental facilities in nuclear energy are key to addressing safety issues. The recent loss of some critical infrastructure, from facilities to industry expertise, has therefore become a concern f...

English Boiling water reactors Molten salt reactors Nuclear safety Light water reactors Safety Advanced reactors Safety research Sodium-cooled reactor Gas-cooled reactors Pressurised heavy water reactors Pressurised water reactors …
Published date: 8 September 2021