The project brings together seven NEA member countries.
Published date:
24 April 2025
CHIP experimental facility to study fission product transport and deposition in the primary circuit. Photo: ASNR
Following several years of experimental research on source term analysis conducted und...
Published date:
24 April 2025
23 -
25 September 2025
Paris, France
The Metal Subgroup of the NEA Working Group on Integrity and Ageing of Components and Structures (WGIAGE) will organise the Pipe Integrity Workshop to:
- Present the outcomes from the three piping int...
Published date:
8 April 2025
NEA/CSNI/R(2021)7
This report presents a study performed on a set of common cause failure (CCF) events of motor operated valves (MOV) within the International Common Cause Failure Data Exchange (ICDE) project. In July...
Published date:
7 April 2025
The main mission of the Working Group on Fuel Safety (WGFS) is to advance the current understanding and address cross-cutting issues related to fuel behaviour in accident conditions, including work o...
Published date:
4 April 2025
Scheme showing the technical scope of NEA ICDE project activities, NEA
Common-cause failure (CCF) events can significantly affect the availability of safety systems of nuclear power plants. In recog...
Published date:
4 April 2025
NEA/CSNI/R(2020)15
This report presents a study performed on a set of common-cause failure (CCF) events within the International Common-cause failure Data Exchange (ICDE) project. The topic of the study was external fa...
Published date:
4 April 2025
Published date:
2 April 2025
The CSNI Code Validation Matrix (CCVM) is a repository of nuclear data and identified phenomena used to run tests, experiments and other procedures to ensure safety assessments and related operationa...
Published date:
25 March 2025
NEA/CSNI/R(2023)10
The objective of this “Kappa Workshop on Earthquake Ground Motions on Rock Sites” (held remotely from 25-28 May 2021), organised by the NEA Working Group on Integrity and Ageing of Components and Str...
Published date:
17 March 2025
NEA/CSNI/R(2022)10
The aim of this second revision of the Best Practice Guidelines (BPG) is to provide guidance to the user of computational fluid dynamics (CFD) codes, both novice and experienced, in the field of nucl...
Published date:
19 March 2025
NEA/CSNI/R(2023)11
Background
Bridge cranes, which are components that handle devices designed to lift and transfer heavy loads, are widely used in the nuclear sector. Assessing the dynamic behaviour of bridge cranes is...
Published date:
19 March 2025
The Committee on the Safety of Nuclear Installations (CSNI) is responsible for NEA programmes and activities that support maintaining and advancing the scientific and technical knowledge base of the ...
Published date:
10 October 2023
NEA/CSNI/R(2021)5
The Working Group on Fuel Cycle Safety (WGFCS), which is part of the Committee on the Safety of Nuclear Installation (CSNI) of the Nuclear Energy Agency (NEA), held an international workshop on devel...
Published date:
10 February 2025
The Working Group on the Analysis and Management of Accidents (WGAMA) focuses on the NEA activities related to potential design-basis and beyond design-basis accidents in nuclear reactors and related...
Published date:
4 February 2025
Left: Test facility for qualification of melt spreading tests. Photo: Argonne National Laboratory (ANL).
Right: Example of corium melt pouring for a melt spreading preparatory test. Photo: Argonne Nat...
Published date:
4 February 2025
Cabri Reactor (Commissariat à l’énergie atomique et aux énergies alternatives)
The Cabri International Project (CIP) began in March 2000 to study the behaviour of nuclear fuel rods and cladding durin...
Published date:
3 February 2025
Published date:
3 February 2025
Left: Scheme of Studsvik LOCA test facility Right: Microstructure of fragmented nuclear fuel, Studsvik
Published date:
3 February 2025
End state of debris in the units 1-3 of Fukushima Daiichi Nuclear Power Station of Tokyo Electric Power Company Holdings. Photo: Japan Atomic Energy Agency
The Preparatory Study on Analysis of Fuel D...
Published date:
3 February 2025
A cabinet containing copper bus before the HEAF test (left) and after the test(right). Source: NRC
Massive electrical discharges, referred to as high energy arcing faults (HEAF), have occurred in nuc...
Published date:
3 February 2025
Halden Hammlab research facility for human factor research.
The NEA Halden HTO Project is a continuation of Man-Technology-Organisation (MTO) research carried out for more than 40 years as part of t...
Published date:
3 February 2025
Appearance of Unit 1 and 2 reactor buildings at Fukushima Daiichi Nuclear Power Station of Tokyo Electric Power Company Holdings (June 2022). Photo: Japan Nuclear Regulation Authority
The FACE projec...
Published date:
3 February 2025
View of the ATLAS experimental loop. KAERI, Korea
The Advanced Thermal-hydraulic Test Loop for Accident Simulation (ATLAS) is a thermal-hydraulic integral effect test facility for advanced light wate...
Published date:
29 January 2025
The Halden Reactor Project has been in operation at the Institute for Energy Technology (IFE) in Norway since 1958 and is the oldest NEA joint project. It brings together a large international techni...
Published date:
29 January 2025
The Halden Reactor Project has been in operation at the Institute for Energy Technology (IFE) in Norway since 1958 and is the oldest NEA joint project. It brings together a large international techni...
Published date:
26 April 2024
CSNI and CNRA members gathered for bi-annual meetings.
Published date:
3 January 2025
NEA/CSNI/R(2019)9
Chemical hazards are an important subject for Fuel Cycle facilities, including various chemical processes and substances such as explosions and healthy risks. On 17-18 April 2018, the Nuclear Energy ...
Published date:
6 October 2020
NEA/CSNI/R(2019)9/ADD1
Appendix C
The non-radiological risks involving dangerous chemicals in nuclear fuel cycle facilities,French framework regulation -
Accidents involving hazardous chemicals pose a significant threat to...
Published date:
12 June 2019
NEA/CSNI/R(2023)5
This report presents the description and the interpretation of the tests carried out in the third phase of the NEA Working Group on Integrity and Ageing of Components and Structures (WGIAGE) activity...
Published date:
2 January 2025
NEA/CSNI/R(2021)12
The seismic design rules for nuclear power plant piping systems that have been in practice since the 1960s have been applied to hundreds of piping supports and seismic restraints for nuclear power pl...
Published date:
11 December 2024
This publication addresses trends and patterns in material degradation as a function of nuclear power plant ageing, which is a key topic in the regulation of ageing management programmes, codes and s...
Published date:
22 April 2024
NEA/CSNI/R(2021)2
Passive thermal-hydraulic systems are widely used in nuclear reactor safety and design. For example, primary circuits in existing boiling and pressurised water reactors are designed to take advantage...
Published date:
26 November 2024
NEA/CSNI/R(2021)2/ADD
PERSEO was built at SIET laboratory (Piacenza, Italy) to study a new passive decay heat removal system operating in natural circulation. The main innovation in PERSEO is the presence of two pools con...
Published date:
26 November 2024
NEA/CSNI/R(2021)11
At the Nuclear Energy Agency (NEA), the importance of fuel modelling and its improvement through development of phenomenological representations has been recognised and multiple technical groups rela...
Published date:
22 October 2024
This report established by the NEA Working Group on Fuel Safety (WGFS) of the Committee on the Safety of Nuclear Installations (CSNI) compiles the state-of-the-art knowledge on fuel behaviour in loss...
Published date:
18 September 2024
NEA Working Group on the Analysis and Management of Accidents (WGAMA) held its annual meeting, hosted by the CEA and atttended by nearly 90 delegates from 19 member countries, along with representati...
Published date:
30 September 2024
The Programme Review Group is established to perform a programme quality review function within the Committee on the Safety of Nuclear Installations (CSNI) and to provide scientific assistance to the...
Published date:
13 August 2024
The objective of the Working Group on Fuel Cycle Safety (WGFCS) is to advance the understanding of relevant aspects of nuclear fuel cycle safety, including: uranium mining and milling; uranium refini...
Published date:
13 August 2024
With the growing importance of SMRs, following the proposal of the CSNI Bureau, the CSNI has decided to create an Expert Group on SMRs (EGSMR), at its 69th meeting held on 2-3 June 2021.
Published date:
13 August 2024
NEA/CSNI/R(2023)4
Rising international interest in increasing fuel burnup limits and fuel cycle length may require fuel enrichment above 5% and high reactivity/high suppression core designs. Based on this interest in ...
Published date:
31 July 2024
NEA/CSNI/R(2006)5
This document is intended to provide regulators, their technical support organisations and industry with a concise review of existing fuel experimental data at reactivity-initiated accident (RIA) and...
Published date:
25 July 2024
Published date:
2 December 2003
NEA/CSNI/R(2021)13
Participants from 14 organisations, representing 11 countries, performed the benchmark exercise. Each participant provided a high-level summary of the leak-before-break (LBB) requirements in their co...
Published date:
20 June 2024
CSNI and CNRA meetings took place on 4-7 June.
Published date:
17 June 2024
NEA/CSNI/R(2022)7
The tsunami that followed the Great East Japan earthquake on 11 March 2011 led to beyond design-basis accidents at Units 1, 2 and 3 of the Fukushima Daiichi Nuclear Power Plant even though they had b...
Published date:
11 June 2024
NEA/CSNI/R(2021)10
At its 61st meeting, the CSNI approved the recommended task on the benchmark on external events hazard frequency and magnitude statistical modelling, to be pursued by the WGEV. Modelling of these ext...
Published date:
11 June 2024
NEA/CSNI/R(2022)6
In continuation of the NEA-guided experimental programmes at the PKL test facility in Germany operated by Framatome GmbH, the fourth phase of the NEA PKL project was conducted between June 2016 and S...
Published date:
11 June 2024
NEA/CSNI/R(2020)6
This report aims to establish the status of current 3D capabilities in T/H system codes, covering all aspects and limitations, including the equations and simplifications considered, the time and spa...
Published date:
28 May 2024
Published date:
1 January 1986