Başhan Veysi, Yucesan Melih, Demirel Hakan, Gul Muhammet
Maritime Faculty, Naval Architecture and Marine Engineering Department, Bursa Technical University, Bursa, 16310, Turkey.
Department of Emergency Aid and Disaster Management, Munzur University, Tunceli, 62000, Turkey.
Environ Monit Assess. 2022 Aug 5;194(9):641. doi: 10.1007/s10661-022-10284-5.
Many shipping companies have started using scrubbers in their fleet to eliminate sulfur emissions from ships, per IMO (International Maritime Organization) rules. Before and during the scrubbers' selection, the scrubbers' operational failures have also started to appear and cause serious concerns. In this study, classified scrubber types are explained and open type, closed type, and hybrid scrubber systems are evaluated. To contribute to this gap in the literature, scrubber failures were identified, five experts with different perspectives were consulted, and the most common and critical malfunctions were evaluated with the fuzzy best-worst method (F-BWM) and fuzzy technique for order preference by similarity to an ideal solution (F-TOPSIS). F-BWM was used to determine the importance weights of the risk parameters used in evaluating failures since it provides fewer comparisons among pairwise comparison-based decision-making methods and a more consistent judgment in the evaluation. F-TOPSIS, on the other hand, was used to determine the final priority scores of the scrubber failures, taking into account the risk parameter weights obtained in the first stage. It has been preferred due to its easy to useness and based on its closeness to the ideal solution and applicability to risk and failure analysis problems. Considering all different systems in general, important issues such as collection efficiency, sulfur emission problem, abrasion, leakages, pump failures, heat exchanger failures, air fan sealing failures, sensors and failures in monitoring the whole system have been investigated. Results show that too high axial velocity for separator and flooded separator, too high solids concentration in recirculation liquid (SF2), piping leakages (SF5), poor quality or inappropriate consumables and chemicals (SF11), and feed circulation pump problems (SF6) are found to be the most important problems among thirteen failures.
根据国际海事组织（IMO）的规定，许多航运公司已开始在其船队中使用洗涤器以消除船舶的硫排放。在洗涤器的选择之前和期间，洗涤器的运行故障也开始出现并引起严重关注。在本研究中，对分类的洗涤器类型进行了解释，并对开放式、封闭式和混合式洗涤器系统进行了评估。为了弥补文献中的这一空白，识别了洗涤器故障，咨询了五位具有不同观点的专家，并使用模糊最佳-最差方法（F-BWM）和模糊理想解相似排序法（F-TOPSIS）对最常见和关键的故障进行了评估。F-BWM用于确定评估故障时使用的风险参数的重要性权重，因为它在基于成对比较的决策方法中提供的比较较少，并且在评估中具有更一致的判断。另一方面，F-TOPSIS用于确定洗涤器故障的最终优先级分数，同时考虑在第一阶段获得的风险参数权重。由于其易于使用，基于其与理想解的接近程度以及对风险和故障分析问题的适用性，它被优先选用。总体考虑所有不同的系统，对收集效率、硫排放问题、磨损、泄漏、泵故障、热交换器故障、风扇密封故障、传感器以及整个系统监测中的故障等重要问题进行了研究。结果表明，在13种故障中，分离器轴向速度过高和分离器满水、再循环液中固体浓度过高（SF2）、管道泄漏（SF5）、消耗品和化学品质量差或不合适（SF11）以及进料循环泵问题（SF6）被发现是最重要的问题。
