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Download fileRisk modelling of ageing nuclear reactor systems
journal contribution
posted on 2021-10-04, 12:31 authored by Mark James Wootton, John D Andrews, Adam Lloyd, Roger Smith, A John Arul, Gopika Vinod, M Hari Prasad, Vipul GargA nuclear reactor is expected to function for extensive periods, during which, coolant circulation and core
reactivity must always be maintained safely. Understanding the risks associated with the operation of
such systems requires proper consideration of ageing components and the effects of preventative maintenance. The traditional methodologies, such as Fault Trees and Event Trees, have limitations in their abilities to model ageing processes and complex maintenance strategies. Petri Nets have been used in this
research as a more suitable alternative. A case study reactor is presented to demonstrate this capability.
Petri Nets were developed for five key subsystems: primary coolant circulation, shutdown condensation,
emergency core coolant injection, emergency shutdown, and control and monitoring, building a representation which considers their failure modes, reaction of the system to faults, and ongoing component
maintenance actions. These models reveal statistics for the timing of failure of these subsystems and relative frequencies of outcome categories
Funding
Design and Maintenance of Nuclear Safety Systems for Life Extension (DaMSSLE)
Engineering and Physical Sciences Research Council
Find out more...History
School
- Science
Department
- Mathematical Sciences
Published in
Annals of Nuclear EnergyVolume
166Publisher
Elsevier BVVersion
- VoR (Version of Record)
Rights holder
© The authorsPublisher statement
This is an Open Access Article. It is published by Elsevier under the Creative Commons Attribution 4.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/Acceptance date
2021-09-06Publication date
2021-09-21Copyright date
2022ISSN
0306-4549Publisher version
Language
- en