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    Establishing a central operation approval system in ship management companies based on a human reliability assessment model
    (Crc Press-Taylor & Francis Group, 2017) Soner, Omer; Akyüz, Emre; Celik, Metin
    This study aims at establishing a central approval mechanism in ship management companies to monitor the probable human errors along with the critical operations. The idea behind the paper is to control the dynamics of error producing conditions (EPC) parameters at shipboard platform. Since the human error reduction is a present great challenges of ship operator, the proposal concept has flexibility to cover the ship fleet in an advance user interfaces. The operation approval system is capable of increasing situation awareness in the probable causes leading to human errors. The proposed central operation approval system is an extension of the research project entitled "Human Reliability Analysis and Monitoring System Proposal in Shipboard Operations (H-RAMS)" (Project no: 114M352) supported by the Scientific and Technological Research Coucil of Turkey (TUBITAK).
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    A fuzzy failure mode and effects approach to analyse concentrated inspection campaigns on board ships
    (Routledge Journals, Taylor & Francis Ltd, 2016) Akyüz, Emre; Akgun, Ilker; Celik, Metin
    Maritime actions against substandard operations of ships are a great deal of memorandum of understanding (MoUs) under regional basis agreements among port state control (PSC) organisations. Herein, concentrated inspection campaigns (CIC), performed by the different members of MoUs in certain periods, are a monitoring strategy to effectively control the core operational matters encountered in fire-safety systems, propulsion and auxiliary machinery system, lifesaving appliances, working conditions on board ships, etc. This paper proposes a quantified maritime safety analysis based on fuzzy failure mode and effects analysis (FMEA) to evaluate CIC database of MoUs in order to achieve advance creative solutions. Demonstration studies are performed on the special database on fire-safety system deficiencies. Since the fuzzy FMEA outcomes point out the risk prioritisation numbers and relevant control options, the paper attempts to transform CIC feedback into useful information in terms of enhancing the ship PSC inspection concept (e-PSC inspection). The paper theoretically contributes to safety analysis methods in literature while demonstration of e-PSC inspections offers an insight into maritime industry in safety improvement.
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    A hybrid human error probability determination approach: The case of cargo loading operation in oil/chemical tanker ship
    (Elsevier Sci Ltd, 2016) Akyüz, Emre; Celik, Metin
    HEART (human error assessment and reduction technique) is widely recognized a robust empirical tool in determination of HEP (human error probability) since prediction of human error is of paramount importance in marine industry (Williams, 1988). The method is successfully applied to a variety of domains such as aviation, railway, petrochemical, nuclear power plants, etc. The method has two fundamental parameters; generic error probability (GEP) and error-producing conditions (EPCs). The EPCs are the factors that affect the human performance negatively. The paper deals in principle with one of the methods used for human error probabilities estimation and it suggests its enhancement using analytic hierarchy process (AHP) (Saaty, 1980). Thus, quantification of the subjective judgements of experts during assessed proportion of affect (APOA) calculation is achieved in the course of HEP. To demonstrate the proposed approach, cargo loading operation in oil/chemical tanker ship is selected since the process is very critical to prevent loss of life and marine environment pollution. Consequently, besides its theoretical insight, the paper has practical outcomes to safety practitioners and maritime professionals for estimation of HEP in a specific task. (C) 2016 Elsevier Ltd. All rights reserved.
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    A phase of comprehensive research to determine marine-specific EPC values in human error assessment and reduction technique
    (Elsevier Science Bv, 2016) Akyüz, Emre; Celik, Metin; Cebi, Selcuk
    Human Error Assessment and Reduction Technique (HEART) is a well-known approach for performing critical operations in safety analysis. It has various applications in many different disciplines such as nuclear energy, railway transportation, aviation and healthcare services. In addition to identifying human error categories, determining and weighting of error-producing conditions (EPCs) is the key aspect of human reliability quantification. Although EPC values are defined specifically for some disciplines, for the maritime industry these values have not been derived yet in terms of ship operational management. The aim of this paper is to produce marine specific EPC values (m-EPCs) in accordance with an advanced methodological framework, including accident causation, weighting, decision-making consensus, and statistical validation. For these purposes, a multi-dimensional approach involving Majority Rule, HEART, HFACS, AHP, and validation techniques has been utilised. Finally, a comparison between existing EPC values (i.e. for the nuclear industry) and m-EPCs is also provided to clarify industrial safety perspectives. Furthermore, this research encourages maritime safety professionals and practitioners to perform human error predictions for various critical shipboard operations. (C) 2016 Elsevier Ltd. All rights reserved.
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    A practical application of human reliability assessment for operating procedures of the emergency fire pump at ship
    (Taylor & Francis Ltd, 2018) Akyüz, Emre; Celik, Erkan; Celik, Metin
    This paper aims to conduct a practical application for human reliability assessment during operating procedures of an emergency fire pump on-board ship. A systematic human error prediction is performed for designated tasks during operational procedures of the emergency fire pump since human error can be regarded as one of the major factors contributing accidents at sea. Hence, human reliability performance is evaluated to enhance fire safety management in operational level on-board ship. In the paper, marine-specific error producing conditions are adopted under fuzzy sets environment. To enhance consistency of research and minimise subjectivity during expert's judgement stage, the paper is supported with a dominance factor which is used to adjust the impact level of expert's judgments in the aggregation stage of the methodology. The outcomes of the paper provide valuable contributions to the safety managers and technical superintends to monitor fire safety management and crew reliability performance.
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    USING OF A'WOT TO DESIGN AN ENHANCED PLANNED MAINTENANCE SYSTEM (E-PMS) ON-BOARD SHIP
    (Brodarski Inst, 2017) Akyüz, Emre; Celik, Metin
    Repair and maintenance is a critical technical aspect on board ship. Poor maintenance planning may lead to serious impairment in safety, efficiency, and environmental performance since researches show that a significant breakdowns and damage to ships with maintenance system. This study investigates the potential of existing planned maintenance system (PMS), mainly adopted strategy on board ships, to point out the required improvements. The PMS is a comprehensive periodic maintenance system for equipment or machinery. It is formulated by the ship management company or ship owner associated with requirements of manufacturer and ship classification society. An A'WOT hybrid methodology is utilized to quantify the strengths, weakness, opportunities and threats of PMS. To develop an e-PMS concept, the proposed solutions are decided respectively. The e-PMS concept enables a considerable amount of contributions to ship system performance and reliability once it integrates into safety management system.