Application of Fuzzy Dematel Technique to Assess Most Common Critical Operational Faults of Marine Boilers

Abstract

Application of fuzzy DEMATEL technique to assess most common critical operational faults of marine boilers Gemi kazanlarının en yaygın kritik operasyonel arızalarının bulanık DEMATEL tekniğiyle değerlendirilme uygulamasıYazar(lar) (Author(s)): Veysi BAŞHAN 1 , Hakan DEMİREL 2 ORCID 1 : 0000-0002-1070-1754 ORCID 2 : 0000-0002-7579-7064 Bu makaleye şu şekilde atıfta bulunabilirsiniz(To cite to this article): Başhan V. and Demirel H. "application of fuzzy Dematel technique to assess most common critical operational faults of marine boilers", Politeknik Dergisi, *(*): *, (*). ABSTRACTWhether it is steam powered or has an internal combustion engine as the main engine of propulsion, a ship without a boiler is unimaginable; somehow a boiler, which is indispensable on ships is needed. Boiler, one of the most important ship auxiliary engines, is used for several purposes that consist of heating of fuel tanks, machinery equipment and accommodation. Many problems can arise in boilers which are designed to work with main engine exhaust gas so that the waste heat can be used in order to match expectations of energy efficiency requirements. When ship systems are analyzed, it is understood that many systems are related to each other. If there is a problem with the boiler many systems will be affected and many problems will be encountered. Therefore, this study provides a fuzzy DEMATEL (Decision Making Trial and Evaluation Laboratory) method to assess most common critical operational faults in marine boilers. The DEMATEL method gives chances to identify and analyses the important faults of marine boiler with respect to cause effect relationship diagram. Likewise, fuzzy sets get through with the uncertainty in decision making and experts comments on DEMATEL. When the results are examined, it is understood that "boiler takes excessive time to reach pressure" is important in terms of the reasons. When the effects are examined, it is seen that the most important effect is "leakage from pipes or valves". The acquired results of the research will contribute to ship boilers operational safety and prevention of dangerous machinery effects. Keywords: Marine boiler, fuzzy DEMATEL, faults, safety. Gemi Kazanlarının En Yaygın Kritik OperasyonelArızalarının Bulanık DEMATEL Tekniğiyle Değerlendirilme Uygulaması ÖZTahrik sisteminin ana motoru olarak ister buharla çalışan isterse de içten yanmalı motora sahip olan bir geminin, kazansız olması hayal edilemezdir; her şekilde, gemilerde vazgeçilmez bir yardımcı makine olan kazana ihtiyaç vardır. En önemli gemi yardımcı makinelerinden biri olan kazan; yakıt tanklarının, makine ekipmanlarının ve yaşam mahallinin ısıtılmasını içeren çeşitli amaçlarla kullanılmaktadır. Gemi ana makinesi egzoz gazı ile çalışacak şekilde tasarlanmakta ve bu sayede atık ısı, enerji verimliliği gereksinimlerinin beklentilerini karşılayacak şekilde kullanılabilmektedir. Bu sistemlerde kazanlarda birçok sorun ortaya çıkabilir. Gemi sistemleri incelendiğinde, birçok sistemin birbiriyle ilişkili olduğu anlaşılmaktadır...

Context-specific micro-foundations and successful SME internationalisation in emerging markets: A mixed-method analysis of managerial resources and dynamic capabilities

“…As discussed earlier, the results of qualitative analysis led to the identification of context-specific managerial resources while, in using a multi-criterion decision-making approach, we relied on experts' opinion (here international managers/entrepreneurs). The advantage of expert-based methods is that they are normally used where the sample size is too small for statistical analyses or the existing designs may fail to capture (Bashan & Demirel, 2019;Singh, Singh, & Khamba, 2020;Singh, Joshi, & Sharma, 2020). As such, these methods can be used to explore similar complex qualitative concepts with a small sample size (expert such as international managers) quantitatively.…”

Identifying Challenges of Internet of Things on Construction Projects Using Fuzzy Approach

“…The strategy is better than the analytical hierarchical process (A.H.P.) given its ability to represent the dependence that exists between factors in the causal graph framework, which is generally ignored by conventional methodologies (Başhan and Demirel, 2019). In the same way, as the regular approach provides clear findings once in a while, they are hampered by their inability to recognise individual problems, usually because of their complexities in relation to human variables (Pandey and Kumar, 2017).…”

Using emerging technologies to improve the sustainability and resilience of supply chains in a fuzzy environment in the context of COVID-19

“…According to this scale, the effect of a factor on another factor is considered as a linguistic variable. This is expressed in five linguistic terms ranging from excess, to normal to very little (Başhan & Demirel, 2019 ). In linguistic terms, it is expressed in triangular fuzzy numbers (Yazdi et al, 2020 ).…”