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    Probabilistic risk assessment
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    Joint project
    International Common-cause Failure Data Exchange (ICDE) Project

    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...

    Risk assessment Nuclear safety research CSNI Probabilistic risk assessment
    Published date: 30 November 2022
    News
    Joint NEA-IAEA symposium on probabilistic safety assessment for singular design reactors

    The joint NEA-IAEA symposium hosted by the United Kingdom’s Office for Nuclear Regulation brought together experts to exchange on the use and application of Probabilistic Safety Analysis (PSA) for re...

    News brief IAEA WGRISK Safety assessment CSNI Probabilistic risk assessment Reactor design …
    Published date: 14 June 2022
    News
    Probabilistic safety assessment for singular design reactors

    Joint NEA and IAEA event will explore probabilistic safety assessment for reactors of singular designs

    News brief IAEA WGRISK Safety assessment CSNI Probabilistic risk assessment Reactor design …
    Published date: 28 April 2022
    NEA Document
    Proceedings of the CSNI Workshop on Structural Reliability Evaluation and Mechanical Probabilistic Approaches of NPP Components
    NEA/CSNI/R(2007)18

    The Committee on the Safety of Nuclear Installations (CSNI) Workshop on Structural Reliability Evaluation and Mechanical Probabilistic Approaches of NPP Components was held in Lyon, France on 25-27 S...

    English WGIAGE Nuclear safety research CSNI Benchmark Proceedings Probabilistic risk assessment …
    Published date: 20 December 2021
    Publications and Reports
    CSNI Technical Opinion Paper - No. 18

    Seismic probabilistic safety assessment (SPSA) is a systematic method for examining and evaluating the risk from earthquake-initiated accidents. The significant advances in the area of SPSA since the...

    English WGRISK WGIAGE WGEV Safety Nuclear safety regulation Probabilistic risk assessment Technical Opinion Papers …
    Published date: 27 September 2021
    NEA Document
    Status of Site-Level (Including Multi-Unit) Probabilistic Safety Assessment Developments
    NEA/CSNI/R(2019)16

    Two important lessons learnt from the March 2011 Fukushima Daiichi nuclear power plant (NPP) accident were: 1) there can be significant interactions between multiple co-located radiological sources (...

    English Fukushima WGRISK Nuclear safety Nuclear safety research CSNI Probabilistic risk assessment …
    Published date: 19 April 2021
    NEA Document
    Use and Development of Probabilistic Safety Assessments at Nuclear Facilities
    NEA/CSNI/R(2019)10

    This report provides descriptions of the current status of PSA programmes in member countries; including basic background information, guidelines, various PSA applications, major results in recent st...

    Fukushima WGRISK Nuclear safety Nuclear safety research CSNI Probabilistic risk assessment …
    Published date: 3 November 2020
    NEA Document
    Collection and Analysis of Fire Events (2010-2013) – Extensions in the Database and Applications: Fire Project Report
    NEA/CSNI/R(2015)14

    The Committee on the Safety of Nuclear Installations (CSNI) Working Group on Risk Assessment (WGRISK) (formerly PWG5) established in 1996 a Task Group to review the status and maturity of methods use...

    English WGRISK Nuclear safety research CSNI Probabilistic risk assessment …
    Published date: 16 December 2015
    NEA Document
    International Workshop on Fire Probabilistic Risk Assessment (PRA)
    NEA/CSNI/R(2015)12

    On 28-30 April 2014, the CSNI Working Group on Risk Assessment (WGRISK) held a workshop on Fire Probabilistic Risk Assessment (PRA) in Garching, Germany. The meeting was attended by nearly 60 partici...

    English WGRISK Nuclear safety research CSNI Proceedings Probabilistic risk assessment …
    Published date: 1 November 2015
    NEA Document
    Failure Modes Taxonomy for Reliability Assessment of Digital Instrumentation and Control Systems for Probabilistic Risk Analysis
    NEA/CSNI/R(2014)16

    The objective of the Digital System Reliability Failure Mode Taxonomy (DIGREL) task group, formed under the OECD/NEA Working Group on Risk Assessment (WGRISK), has been to develop a taxonomy of failu...

    English WGRISK Nuclear safety research CSNI Probabilistic risk assessment Digital instrumentation and control in nuclear safety …
    Published date: 16 February 2015
    NEA Document
    CODAP Topical Report: Flow Accelerated Corrosion (FAC) of Carbon Steel and Low Alloy SteelPiping in Commercial Nuclear Power Plants
    NEA/CSNI/R(2014)6

    The Component Operational Experience, Degradation & Ageing Programme (CODAP) Topical Report on FAC of Carbon Steel and Low Alloy Steel Piping includes a primer on the environmental and operational fa...

    English Nuclear safety research CSNI Probabilistic risk assessment
    Published date: 20 January 2015
    NEA Document
    Probabilistic Safety Assessment (PSA) of Natural External Hazards Including Earthquakes
    NEA/CSNI/R(2014)9

    The Fukushima Dai-ichi accident triggered discussions about the significance of external hazards and their treatment in safety analyses. In addition, stress tests results have shown vulnerabilities a...

    English WGRISK WGIAGE Nuclear safety research CSNI Proceedings Probabilistic risk assessment …
    Published date: 2 July 2014
    NEA Document
    A Joint Report on PSA for New and Advanced Reactors
    NEA/CSNI/R(2012)17

    Probabilistic safety assessment/probabilistic risk assessment (PSA/PRA) for new and advanced reactors is recognized as an important approach to achieve improved safety for the future nuclear power pl...

    English WGRISK Nuclear safety research CSNI Probabilistic risk assessment …
    Published date: 19 February 2013
    NEA Document
    Use and Development of Probabilistic Safety Assessment: An Overview of the Situation at the End of 2010
    NEA/CSNI/R(2012)11

    The main objective of the Working Group on Risk Assessment (WGRISK) of the Nuclear Energy Agency (NEA)/Committee on the Safety of Nuclear Installations (CSNI) is to advance the probabilistic safety a...

    English WGRISK Nuclear safety research CSNI Probabilistic risk assessment …
    Published date: 3 January 2013
    NEA Document
    PSA Knowledge Transfer
    NEA/CSNI/R(2012)15

    The maintenance of sufficient expertise, data, analytical and experimental capabilities to be able to develop the technical basis to resolve currently identified safety issues and respond to and inve...

    English WGRISK Nuclear safety research CSNI Probabilistic risk assessment …
    Published date: 12 December 2012
    NEA Document
    Simulator Studies for HRA Purposes
    NEA/CSNI/R(2012)1

    In 2008, the NEA's Working Group on Risk Assessment (WGRISK) issued a report [NEA/CSNI/R(2008)9] addressing the feasibility of a joint international effort on human reliability analysis (HRA) data. T...

    English WGHOF WGRISK Nuclear safety research CSNI Proceedings Probabilistic risk assessment …
    Published date: 2 May 2012
    NEA Document
    OECD/NEA Pipe Failure Data Exchange (OPDE) Project: 2002-2008 Status Report
    NEA/CSNI/R(2009)19

    Several OECD member countries agreed to establish the OECD/NEA Piping Failure Data Exchange Project (OPDE) to encourage multilateral co-operation in the collection and analysis of data relating to de...

    English Nuclear safety research CSNI Probabilistic risk assessment
    Published date: 5 November 2009
    NEA Document
    Recent Findings and Developments in Probabilistic Seismic Hazards Analysis (PSHA) Methodologies and Applications: Workshop Proceedings
    NEA/CSNI/R(2009)1

    Following the recommendations of a previous meeting held in Jeju, Korea on 6-8 November 2006, the Committee on the Safety of Nuclear Installations (CSNI) approved a proposal of the Working Group on I...

    English WGIAGE Nuclear safety research CSNI Proceedings Probabilistic risk assessment …
    Published date: 13 August 2009
    NEA Document
    Ability of Current Advanced Codes to Predict Core Degradation, Melt Progression and Reflooding: Benchmark Exercise on an Alternative TMI-2 Accident Scenario
    NEA/CSNI/R(2009)3

    This Phase II exercise was the first benchmarking of severe accident codes promoted by NEA in almost 20 years. The objective of the exercise was to perform a code benchmark on a well-defined plant (s...

    English WGAMA Accident analysis and management Fuel cycle facility safety Nuclear safety research Safety assessment CSNI Safety Safety of components and structures Risk assessment Benchmark Probabilistic risk assessment …
    Published date: 3 August 2009
    NEA Document
    TMI-2 Examination Results from the OECD-CSNI Programme: Volume 2
    NEA/CSNI/R(1992)9/VOL2
    English Accident analysis and management Fuel cycle facility safety Nuclear safety research Safety assessment CSNI Joint project Safety Safety of components and structures Risk Risk assessment Probabilistic risk assessment …
    Published date: 17 August 2006
    NEA Document
    Progress Made in the Last Fifteen Years Through Analyses of the TMI-2 Accident Performed in Member Countries
    NEA/CSNI/R(2005)1

    The TMI-2 accident keeps providing unique full scale data giving opportunities to check the ability of the codes to model overall plant behaviour and to perform many sensitivity and uncertainty calcu...

    English Three Mile Island WGAMA Accident analysis and management Fuel cycle facility safety Nuclear safety research Safety assessment CSNI Safety Safety of components and structures Risk assessment Probabilistic risk assessment …
    Published date: 10 March 2005
    Publications and Reports
    PSACOIN Level "S" Intercomparison: Sensitivity Analysis

    The Probabilistic System Assessment Group (PSAG) (formerly the Probabilistic System Assessment Code (PSAC) User Group was established in 1985 by the Nuclear Energy Agency (NEA) of the Organisation fo...

    English Radioactive waste management Disposal Safety assessment Codes and programs Probabilistic risk assessment …
    Published date: 1 January 1993
    NEA Document
    TMI-2 Analysis Exercise Final Report
    NEA/CSNI/R(1991)8

    Three Mile Island Unit 2 Analysis Exercise Final Report

    English Accident analysis and management Fuel cycle facility safety Nuclear safety research Safety assessment CSNI Joint project Safety Safety of components and structures Risk assessment Probabilistic risk assessment Accident management …
    Published date: 1 January 1991
    Publications and Reports
    PSACOIN Level 1A Intercomparison

    The Probabilistic System Assessment Group (PSAG) (formerly the Probabilistic System Assessment Code (PSAC) User Group was established in 1985 by the Nuclear Energy Agency (NEA) of the Organisation fo...

    English Model Radionuclide migration Radioactive waste management Disposal Safety assessment Codes and programs Probabilistic risk assessment …
    Published date: 1 January 1990
    Publications and Reports
    PSACOIN Level 0 Intercomparison

    The Probabilistic System Assessment Group (PSAG) (formerly the Probabilistic System Assessment Code (PSAC) User Group was established in 1985 by the Nuclear Energy Agency (NEA) of the Organisation fo...

    English Modelling and simulation Radioactive waste management Disposal Safety assessment Codes and programs Probabilistic risk assessment …
    Published date: 1 January 1987
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