Formal Safety Assessment of a Marine Seismic Survey Vessel Operation,Incorporating Risk Matrix and Fault Tree Analysis

In maritime safety research,risk is assessed usually within the framework of formal safety assessment(FSA),which provides a formal and systematic methodology to improve the safety of lives,assets,and the environment.A bespoke application of FSA to mitigate accidents in marine seismic surveying is put forward in this paper,with the aim of improving the safety of seismic vessel operations,within the context of developing an economically viable strategy.The work herein takes a close look at the hazards in North Sea offshore seismic surveying,in order to identify critical risk factors,leading to marine seismic survey accidents.The risk factors leading to undesirable events are analysed both qualitatively and quantitatively.A risk matrix is introduced to screen the identified undesirable events.Further to the screening,Fault Tree Analysis(FTA)is presented to investigate and analyse the most critical risks of seismic survey operation,taking into account the lack of historical data.The obtained results show that man overboard(MOB)event is a major risk factor in marine seismic survey operation;lack of training on safe work practice,slippery deck as a result of rain,snow or water splash,sea state affecting human judgement,and poor communication are identified as the critical risk contributors to the MOB event.Consequently,the risk control options are focused on the critical risk contributors for decision-making.Lastly,suggestions for the introduction and development of the FSA methodology are highlighted for safer marine and offshore operations in general.

An Evaluation of the Effects of Human Factors on Pilotage Operations Safety

In recent years,marine pilotage accidents occurring on a worldwide basis as a result of human error have not been ceased to transpire,despite advances in technology and a significant set of international conventions,regulations,and recommendations to reduce them.This paper aims to investigate the effect of human factors on the safety of maritime pilotage operations.The human factors that affect the operators who are performing ships’berthing operations have also been examined in detail.In this study,in order to determine the causes of human-related errors occurred in maritime pilotage accidents,a comprehensive literature review is carried out,and a considerable number of real past case examples and an analysis of the maritime accident investigation reports regarding pilotage operations events that occurred between 1995 and 2015 have been reviewed.To validate the identified humanrelated risk factors(HCFs)and explore other contributory factors,survey questionnaires and semi-structured interviews with domain experts have been conducted.A structural hierarchy diagram for the identified risk factors(HCFs)has been developed and validated through experienced experts belonging to the maritime sector.A questionnaire for pair-wise comparison is carried out and analysed using the analytic hierarchy process(AHP)approach to evaluate the weight and rank the importance of the identified human causal factors.The findings of this study will benefit the maritime industry,by identifying a new database on causal factors that are contributing to the occurrence of maritime pilotage disasters.The database can be used as a stand-alone reference or help implement effective risk reduction strategies to reduce the human error,that might occur during pilotage operations.

考虑到船舶机动性和会遇情况的一种新的面向船舶领域的船舶碰撞风险参数

The identification of ship collision risks is an important element in maritime safety and management.The concept of the ship domain has also been studied and developed since it was proposed.Considering the existing trend that the ship domain is increasingly widely used in collision risk-related research,a new domain-oriented collision risk factor,i.e.,the current state of domain(CSD),is introduced in this paper,which can effectively reflect the current state and show a certain predictability of collision risk from the perspective of the ship domain.To further prove the rationality of the CSD,a series of different simulations consisting of three typical encounter scenarios were conducted,verifying the superiority of the proposed parameter.

A Comparative Analysis of Vessels Detained under the PSC Agreements of Paris, Tokyo and Vina del Mar

Twenty years ago, in 1992, the International Maritime Organization set the objective of extending the regional Port State Control agreements to the world scale. This would be achieved, it was hoped, by ＂exporting＂ the model of the Paris MoU （Memorandum of Understanding） agreement of 1982 to other regional areas. Now would seem to be a good time to consider the prospects for a future scenario where all the countries involved form a truly global network with uniform procedures. The authors of this article put forward an earlier objective that could be the beginning of that global policy, fi＇om a detailed look at the three most important regional agreements （Paris, Tokyo and Vifia del Mar） that encompass geographically the following areas, respectively： Europe plus Canada, the Asia-Pacific, and South America. To this end, we first make a theoretical comparison based on the legal standards of application, and then present a study made of all the vessels detained under the three agreements, with a view to determining whether or not there are different kinds of behaviours, with regard to the flags and ＂recognised organizations＂ used by the vessels to certify their levels of safety. The numerical variables we have taken as basic with respect to compliance with the international standards are： the date that the vessel＇s keel was laid （age of the vessel） and as significant categorical variables, the type of vessel, the flag, the typology of that flag, the corresponding classification society, and whether or not that society is a member of the IACS （International Association of Classification Societies）. The results show a similar trend between the Paris and Tokyo agreements, but in the case of Vifia del Mar, the level of efficacy in the control appears to be insufficient in comparison with the standard of the other two.

Call For Paper 5th International Maritime Conference on DESIGN FOR SAFETY and 4th Workshop on RISK-BASED APPROACHES IN THE MARINE INDUSTRIES

In 1999, the first International Maritime Confere- nce on Design for Safety was successfully held in Glasgow, UK as a WEGEMT Euro Conference with the sponsorship of the European Commission. Respo- nding to the expectation from the world maritime safety community, the second was held in 2004 in Japan. The third and fourth were held in USA, 2007 and Italy, 2010, respectively. This year the Design for Safety conference including a single event of the 4th Workshop on Risk-Based Approaches in the Marine Industries will be held in Shanghai on November 25- 27, 2013. The conference is organized by Shanghai Jiao Tong University and is co-organized/sponsored by Marine Design and Research Institute of China （MARIC） and China Classification Society （CCS~.