A systems approach to risk analysis of maritime operations

Rokseth, Børge; Utne, Ingrid Bouwer; Vinnem, Jan Erik

doi:10.1177/1748006x16682606

Cited by 45 publications

(50 citation statements)

References 12 publications

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“…The design issues would often be overlooked unsafe system states (hazards) that involve various interactions, not least the interactions between technology and people, e.g. (Rokseth et al, 2017). New hazard analysis methods, which are not yet imbedded in the current requirements, could be considered for more comprehensive analysis.…”

Section: Discussionmentioning

confidence: 99%

Unravelling causal factors of maritime incidents and accidents

et al. 2018

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Lessons from maritime accidents are conventionally used to inform safety improvements in design and operation of ships. However, this process is only as good as the core understanding derived from accident analysis is. The current explanation of accidents is limited to direct and contributing causal factors, whereas the role of a wider socio-technical context that has given rise to causal mechanisms behind major maritime accidents in recent years is left unexplained. The paper describes analysis results of maritime incidents and accidents occurred over the last decade with passenger ships, with the purpose to illuminate the prevailing causal factors, not least the systemic ones. The results show where the weak links in maritime safety control are (e.g., interactions between ship operators and equipment manufacturers), what their role in accident causation is, and how they can be strengthened. The study seeks to provide valuable input for enhancements in overall maritime safety control and proactive safety management at the ship and shipping company levels.

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Section: Discussionmentioning

confidence: 99%

Unravelling causal factors of maritime incidents and accidents

et al. 2018

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“…Rokseth et al applied the STPA method to hazard analysis of marine operations, particularly the operations of offshore supply 94 vessels using the DP system (Rokseth et al, 2017). The authors analysed the following system and sub-system level hazards: 95 vessel motion is not controlled according to the motion-control objectives, the motion-control objectives are not in line with 96 the operational function of the vessel, thrusters are not controlled in a manner that satisfies the control objectives, adequate 97 amount of power is unavailable for thrusters.…”

Section: Dong Et Al Studied Collision Incidents and Accidents Betweementioning

confidence: 99%

Systemic hazard analysis of offshore service operations

Puisa

Bolbot

Newman

et al. 2020

Preprint

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Abstract. As windfarms are moving further offshore, logistical concepts increasingly include service operation vessels (SOV) as the prime means of service delivery. However, given the complexity of SOV operations in hostile environments, their safety management is challenging. The objective of this paper is to bring awareness of hazards that may have been overlooked in earlier assessments, and allow for a preliminary comparison of various operational stages. To this end, we use a systems approach to identify and analyse hazards arising during the SOV transit and manoeuvre within a windfarm and interfaces with turbines and daughter crafts. The hazard analysis is performed by systemic method STPA, allowing to explore hazardous scenarios caused by flawed interactions between system components and, to a lesser extent, by component failures. The results comprise 23 operational hazards arising during the three stages of SOV operation and 1270 hazardous scenarios (pathways) leading to the hazards. The preliminary comparison of SOV operations shows that approaching and departing from turbines in auto and manual modes is potentially the riskiest stage of SOV operation. The lowest risk is of the SOV interface with daughter crafts. The paper discusses the analysis results and explains how they can be used to inform new and existing safety management systems of SOV.

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“…Gerek adım 5 tespit edilen hata bazlı risk değerleri ve gerekse de adım 6'da tespit edilen global risk değerleri denklem (26) 10 (1) 0.14 puanla en yüksek tercih edilirlik değerine sahiptir. RKS 10 'u 0.09 puanla RKS 4 (2) takip etmektedir.…”

Section: Adım 7 Risk/emniyet Değerlerinin Durulaştırılmasıunclassified

A risk based decision making approach for critical ship operations

Çiçek¹,

Topçu²

2018

J ETA Maritime Sci

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ÖzDeniz taşımacılığının sürekliliğinde odak unsur olan gemi filolarının emniyet ve performans parametrelerinin hassas bir şekilde takip edilmesi gerekmektedir. Bunun beraberinde, denizcilikte çevre, emniyet ve insan sağlığı ile ilgili konularda uluslararası kural yaptırımları da giderek yoğunlaşmaktadır. Bu konudaki en güncel uluslararası kurallardan biriside Uluslararası Emniyet Yönetimi Kodu içerisinde ifade edilen, kritik gemi operasyonlarına yönelik risk değerlendirmesi yapılması zorunluluğudur. Dolayısı ile gemi işletmeciliği firmalarının emniyetli yönetim sistemlerini gemi, personel ve çevre esaslı risk değerlendirmesi yapabilecek bir model ile desteklemeleri gerekmektedir. Yapılan bu çalışma ile gemi filo yönetiminde operasyonel ve yönetimsel süreçlere yönelik risk kontrol esaslı bir karar verme modeli önerilmektedir. Önerilen model içerisinde hata ağacı analizi ile kanıtsal sonuçlama yaklaşımının bir arada kullanıldığı bütünleşik bir yapıya sahiptir. Ayrıca, operasyonel ve yönetimsel süreçlere ait bilgi eksikliği ve belirsizliğini ortadan kaldırmak amacı ile model bulanık mantık ile geliştirilmiştir. Çalışmada önerilen model, kritik gemi operasyonlarından biri olan yağ-yakıt alım operasyonuna uygulanmıştır. Uygulama sonuçları modelin özellikle gemi operasyonel risklerine karşı duyarlı ve etkin çözüm üretebilen bir model olduğunu göstermektedir. AbstractThe safety and performance parameters of merchant vessels, which are the focus elements in the sustainable maritime transportation, need to be followed precisely. Parallel to this, enforcements of international rules on the environment, safety and human health on maritime transportation are increasingly concentrated nowadays. One of the most up-to-date rules in this concept is compulsory risk assessment on ships which is made mandatory by means of a reference in International Safety Management Code. Therefore, it is necessary for ship management companies to support their safety management systems with a risk assessment methodology capable on assessing ship, personnel and environment based risks. At this insight, this study proposes a risk-based decision making approach for operational and managerial processes in ship fleet management. The proposed approach has an integrated structure in which fault tree analysis and the evidential reasoning approach are used UCTEA The Chamber of Marine Engineers Journal of ETA Maritime Science together. It is also supported with fuzzy logic to remove the lack of information and uncertainty of operational and managerial processes. The model is applied to one of the critical shipboard operations; bunkering operation. The application results show that the model can produce a sensitive and efficient solution to ship operational risks.

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A systems approach to risk analysis of maritime operations

Cited by 45 publications

References 12 publications

Unravelling causal factors of maritime incidents and accidents

Unravelling causal factors of maritime incidents and accidents

Systemic hazard analysis of offshore service operations

A risk based decision making approach for critical ship operations

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