Resilience Engineering Research Group

NxGen Project Outputs

Our aim is to share our work as widely as possible, open access and open source, for the benefit of all. 

Explore the development and findings of our research through the publications, reports, and presentations below. 

NxGen final
 
Journal papers
 Title Authors Publication

Dynamic and Dependent Tree Theory (D2T2): A Framework for the Analysis of Fault Trees with Dependent Basic Events

 John Andrews, Silvia Tolo Reliability Engineering and System Safety
An Integrated Modelling Framework for Complex Systems Safety Analysis Silvia Tolo, John Andrews Quality and Reliability Engineering International
Fault Tree Analysis Including Component Dependencies Silvia Tolo, John Andrews IEEE Transactions on Reliability
Calculation of the System Unavailability Measures of Component Importance using the D2T2 Methodology of Fault Tree Analysis John Andrews, Sally Lunt Mathematics: Special Issue - Reliability Analysis and Stochastic Models in Reliability Engineering

 

Conference contributions
 Title Authors Conference
Evolved Methods for Risk Assessment Andrew Jackson, Silvia Tolo, John Andrews Proceedings of ESREL 2021 - 31st European Safety and Reliability Conference, Angers, France
A Modelling Framework for Dynamic Safety Assessment Silvia Tolo, Rundong Yan, Sarah Dunnett, John Andrews ESREL 2021 - 31st European Safety and Reliability Conference, Angers, France
Train Derailment Risk Model Incorporating Complex Asset Management Strategies Andrew Jackson, Silvia Tolo, John Andrews 11th IMA International Conference on Modelling in Industrial Maintenance and Reliability, June 2021 
Risk Modelling Incorporating Complex Maintenance Strategies Silvia Tolo, Andrew Jackson, John Andrews 11th IMA International Conference on Modelling in Industrial Maintenance and Reliability, June 2021
An Integrated Modelling Framework for Complex Systems Safety Analysis: Case Studies Silvia Tolo, John Andrews ESREL 2022 - 32nd European Safety and Reliability Conference, Dublin, Ireland. Special Session S:09: "Novel Strategies for the Safety Assessment of Dynamic and Dependent Systems"
Fault Tree Analysis Including Component Dependencies Silvia Tolo, John Andrews ESREL 2022 - 32nd European Safety and Reliability Conference, Dublin, Ireland. Special Session S:09: "Novel Strategies for the Safety Assessment of Dynamic and Dependent Systems"
A Petri Net Approach to the Risk Analysis of Jet Engines Silvia Tolo, John Andrews, Ian Thatcher, David Stamp  ESREL 2022 - 32nd European Safety and Reliability Conference , Dublin, Ireland. Special Session S:09: "Novel Strategies for the Safety Assessment of Dynamic and Dependent Systems"
Dynamic and Dependent Tree Theory (D2T2): A Fault Tree Analysis Framework John Andrews , Silvia Tolo ESREL 2022 - 32nd European Safety and Reliability Conference, Dublin, Ireland. Special Session S:09: "Novel Strategies for the Safety Assessment of Dynamic and Dependent Systems"
Dynamic Modelling of a Jet Engine Internal Air System Silvia Tolo, John Andrews RAMS 2023 The 69th Annual Reliability and Maintainability Symposium, January 2023, Orlando, Florida
Next Generation Prediction Methodologies and Tools for System Safety Analysis (NxGen) - A Project Overview Kate Sanderson, John Andrews 62nd European Safety Reliability and Data Association (ESReDA) Seminar, April 2023, University of Twente, Netherlands 
The Dynamic and Dependent Tree Theory (D2T2) Methodology Developed for Fault Tree Analysis John Andrews, Silvia Tolo 62nd European Safety Reliability and Data Association (ESReDA) Seminar, April 2023, University of Twente, Netherlands 
Dynamic Safety and Degradation Analysis of an Aircraft Internal Air System Silvia Tolo, John Andrews 62nd European Safety Reliability and Data Association (ESReDA) Seminar, April 2023, University of Twente, Netherlands 
Extension of Common Measures of Importance for Dynamic and Dependent Tree Theory (D2T2) Sally Lunt, John Andrews 62nd European Safety Reliability and Data Association (ESReDA) Seminar, April 2023, University of Twente, Netherlands 
Dependent and Dynamic Tree Theory (D2T2) for Event Tree Analysis Silvia Tolo, John Andrews 62nd European Safety Reliability and Data Association (ESReDA) Seminar, April 2023, University of Twente, Netherlands 
Fault Tree to Petri Net Conversion for the Analysis of a Standby System Darren Prescott, John Andrews 62nd European Safety Reliability and Data Association (ESReDA) Seminar, April 2023, University of Twente, Netherlands 
A Nested Petri Net - Fault Tree Approach for Modelling Complex Failure Behaviour in Engineering Systems Silvia Tolo, John Andrews 12th IMA International Conference on Modelling in Industrial Maintenance and Reliability (MIMAR), July 2023, Nottingham, UK
Extension of Common Measures of Importance for Dynamic and Dependent Tree Theory (D2T2) Sally Lunt, John Andrews 12th IMA International Conference on Modelling in Industrial Maintenance and Reliability (MIMAR), July 2023, Nottingham, UK
A Nested Petri Net - Fault Tree Approach for System Dependency Modelling Silvia Tolo, John Andrews ESREL 2023 - 33rd European Safety and Reliability Conference, Southampton, UK. Special Session 14: "Next Generation Methodologies for System Safety Analysis"
The Extension of Commonly used Measures of Importance for Dynamic and Dependent Tree Theory Sally Lunt, John Andrews ESREL 2023 - 33rd European Safety and Reliability Conference, Southampton, UK. Special Session 14: "Next Generation Methodologies for System Safety Analysis"
NxGen Toolbox:  An Overview Silvia Tolo, John Andrews  ESREL 2024, 34th European Safety and Reliability Conference, 23rd - 27th June, Cracow, Poland
Petri Net Framework for Modelling Standby Dependencies in Fault Trees Francesco Pugliese, Darren Prescott, John Andrews  ESREL 2024, 34th European Safety and Reliability Conference, 23rd - 27th June, Cracow, Poland
Fault Tree Culling in the Dynamic and Dependent Tree Theory (D2T2) Framework through Approximation Techniques Rundong Yan, John Andrews  ESREL 2024, 34th European Safety and Reliability Conference, 23rd - 27th June, Cracow, Poland
D2T2 Analysis of a Loss of Main Feed Water AccidentESREL24 ST Nucl CS ExtAb Silvia Tolo, John Andrews ESREL 2024, 34th European Safety and Reliability Conference, 23rd - 27th June, Cracow, Poland
D2T2 Analysis of an Offshore Deluge System Availability and Reliability Leonardo Leoni, John Andrews, Filippo De Carlo ESREL 2024, 34th European Safety and Reliability Conference, 23rd - 27th June, Cracow, Poland
Dynamic and Dependent Fault Tree Analysis of a Shipping System Francesco Pugliese, Darren Prescott, John Andrews ESREL 2024, 34th European Safety and Reliability Conference, 23rd - 27th June, Cracow, Poland
Importance Measures for Fault Tree Analysis using Dynamic and Dependent Tree Theory, D2T2 John Andrews, Sally Lunt ESREL 2024, 34th European Safety and Reliability Conference, 23rd - 27th June, Cracow, Poland
Modelling Complexity in System Safety: Generalizing the D2T2 Methodology Silvia Tolo, John Andrews ESREL 2024, 34th European Safety and Reliability Conference, 23rd - 27th June, Cracow, Poland

 

Reports and presentations
 Title Authors Event

The Analysis of Fault Trees with Dependent Basic Events

John Andrews

Durham University, Department of Mathematical Sciences,  Reliability Day, 4th June 2024
Next Generation Prediction Methodologies and Tools for System Safety Analysis John Andrews Invited keynote, colloquium for the PrimaVera project (Dutch Technical Universities) April 2021
Improved Risk Assessment John Andrews

Invited presentation, Chair Risk and Resilience of Complex Systems (Professor Anne Barros) - Annual Scientific Seminar, CentraleSupélec Paris-Saclay University, October 2021
Current Challenges and Future Solutions for System Safety Analysis Silvia Tolo

Safety and Reliability Society (SaRS) Webinar April 2022

Institute for Risk and Uncertainty, University of Liverpool, Webinar July 2022
Dynamic and Dependent Tree Theory for Event Trees Silvia Tolo Durham University, Reliability seminar June 2022
Dependent and Dynamic Fault Tree Analysis John Andrews Durham University, Reliability seminar June 2022
Models to Support Accurate Decision Making in Railway Infrastructure Asset Management John Andrews Special Plenary Session WCEAMS Conference (16th World Congress on Engineering Asset Management) Value-Centered and Intelligent Asset Management in the 4th Industrial Revolution Era, Seville, October 2022
Enhancing System Safety and Reliability: The Dynamic and Dependent Tree Theory Framework for Accurate System Analysis John Andrews, Silvia Tolo Advances in Engineering - spotlight article, July 2023
Improved Methods for System Reliability Modelling John Andrews

Invited Keynote - SPAA & Dependability@Siemens 2023, Nuremberg, Germany - 8th / 9th November 2023.
Modelling Dependencies in Complex Systems: Dynamic and Dependent Tree Theory (D2T2) Silvia Tolo Invited Presentation - "Towards Autonomous Digital Twins: Uncertainty, Data, Computing, Simulation, and Ethics". ESRA Symposium, University of Strathclyde, Glasgow, UK. 30th November - 1st December 2023.
Modelling Modern Systems Safety: The Dynamic and Dependent Tree Theory (D2T2) Silvia Tolo Safety and Reliability Society (SaRS) invited webinar presentation, March 2024.
Dynamic and Dependent Tree Theory for Fault Tree Analysis (D2T2) John Andrews Nuclear Safety Inspectors (HSE) Invited webinar presentation

 

Tutorials
 Title Authors DocumentPresentation 
An Introduction to Fault Tree Analysis John Andrews and Sally Lunt Access the text document  Access the presentation slides
Next Generation Fault Tree Analysis Methods John Andrews and Silvia Tolo Access the text document Access the presentation slides

 

Resilience Engineering Research Group

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