Fault tree analysis

Kritzinger, Duane

doi:10.1016/b978-0-08-100889-8.00004-0

Cited by 12 publications

(4 citation statements)

References 4 publications

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“…By increasing the complexity of a system, the need for a thorough understanding of the effective parameters which lead to the malfunction is heightening e.g. (Kritzinger 2017).…”

Section: Methodology For Fault Detectionmentioning

confidence: 99%

Flap-type wave energy converters: From accelerated testing to fault detection

Saeidtehrani¹,

Cabboi²,

Lavidas³

et al. 2022

Trends in Renewable Energies Offshore

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Faults in complex systems such as Wave Energy Converters (WECs) are inevitable. WECs are expected to work in harsh environments to produce more power which increases the possibility of major failures. Increasing the reliability of WECs calls for the development of early Fault Detection (FD) algorithms which needs understanding of the enormous modes of failures to prevent the costly downtime of the device. Through this work, a methodology is provided to simulate the effect of malfunction with various levels of complexity dependent on time and velocity of the WEC. The fault signals are applied to an experimentally validated model of an array of flap-type WECs. The assumed failures range from the delayed responses to the complete blocked hinge. It is shown that even a signal of soft fault with 7% change in the response amplitude can change the period of the system. These changes are investigated for the development of a general FD algorithm for WECs.

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“…By increasing the complexity of a system, the need for a thorough understanding of the effective parameters which lead to the malfunction is heightening e.g. (Kritzinger 2017).…”

Section: Methodology For Fault Detectionmentioning

confidence: 99%

Flap-type wave energy converters: From accelerated testing to fault detection

Saeidtehrani¹,

Cabboi²,

Lavidas³

et al. 2022

Trends in Renewable Energies Offshore

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“…An FTA can be applied to analyse the combined effects of simultaneous, noncritical events on the top event, to evaluate system reliability, to identify potential design defects and safety hazards, to simplify maintenance and troubleshooting, to identify root causes during a root cause failure analysis, to logically eliminate causes for an observed failure. These mentioned features represent the essential tools for investigating the possible technical, human and organisational issues of the pitstop (Kritzinger, 2016).…”

Section: Formula 1 Pitstop: the Analysismentioning

confidence: 99%

Gone in 2s: a deep dive into perfection analysing the collaborative maintenance pitstop of Formula 1

Martinetti

Awadhpersad

Singh

et al. 2021

JQME

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PurposeThe paper aims to convert into useable guidelines, the knowledge related to human factors and tasks' organisation, which are embedded in one of the most exciting maintenance actions that are carried out, the pitstop in Formula 1 races.Design/methodology/approachThe paper opted for a fault tree analysis (FTA) to de-construct all the sub-tasks and their possible deviations from desirable situations and to evaluate the most relevant information needed for carrying out the pitstop operation. Besides, the SHELL model was applied in a second stage to evaluate the interaction between human being and human interfaces with other components of the system. Once this set of information was crystallised, the research translated it into useable guidelines for organising industrial maintenance actions using the same approach and possible reaching the same results.FindingsThe results of this study is a structured set of guidelines that encompasses the most paramount aspects that should be considered for setting correct maintenance actions. They represent a “guide” for including the different angles that are included during these operations.Research limitations/implicationsThe guidelines are potentially applicable to every maintenance operation. The guidelines should be tested on different working domains to check their applicability besides the racing world.Practical implicationsThis study is a reverse engineering work for creating a scheme to include into maintenance operations aspects such as crew athlete-like fitness, training, technology, organisational issues, safety, ergonomics and psychology.Originality/valueThe value of the paper is deconstructing the results of one of the most successful and prepared maintenance action. The paper takes a different approach in proposing how to structure and create maintenance solutions. The difference in approaches between the maintenance during the pitstop of Formula 1 car and industrial applications enhances the gap that needs still to be filled for further improving maintenance actions out of the racing world.

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“…This technique selects the top event of the analysis, i.e., the undesired event to avoid during operation [31]. Then, the possible combinations between the failures determining the top event are identified [32]. The top event of the FTA may consist of the failure or the breakage of a component: in the present work, the top event is the loss of output power on the AC side of the converters.…”

Section: Description Of the Case Study Under Analysismentioning

confidence: 99%

Reliability Analysis and Repair Activity for the Components of 350 kW Inverters in a Large Scale Grid-Connected Photovoltaic System

et al. 2021

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The reliability of photovoltaic (PV) generators is strongly affected by the performance of Direct Current/Alternating Current (DC/AC) converters, being the major source of PV underperformance. However, generally, their reliability is not investigated at component level: thus, the present work presents a reliability analysis and the repair activity for the components of full bridge DC/AC converters. In the first part of the paper, a reliability analysis using failure rates from literature is carried out for 132 inverters (AC rated power of 350 kW each) with global AC power of 46 MW in a large scale grid-connected PV plant. Then, in the second part of the work, results from literature are compared with data obtained by analyzing industrial maintenance reports in the years 2015–2017. In conclusion, the yearly energy losses involved in the downtime are quantified, as well as their availability.

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Fault tree analysis

Cited by 12 publications

References 4 publications

Flap-type wave energy converters: From accelerated testing to fault detection

Flap-type wave energy converters: From accelerated testing to fault detection

Gone in 2s: a deep dive into perfection analysing the collaborative maintenance pitstop of Formula 1

Reliability Analysis and Repair Activity for the Components of 350 kW Inverters in a Large Scale Grid-Connected Photovoltaic System

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