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为适应我国海上交通、海洋资源开发和海洋环境保护等事业的发展需要,开发了适合救助船舶的信息化管理系统.该系统能很好地保障海上安全生产的稳定和改善海上投资环境,保证救助船时刻保持良好的船况,提高了机务管理的信息化水平,增强了救助船舶的可靠性和安全性. 相似文献
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《江苏科技大学学报(社会科学版)》2010,(5)
为了研究撞击船艏形状及刚度对碰撞历程损伤变形产生的影响,利用数值仿真软件MSC/Dytran,对不同形式及刚度的球艏型船艏撞击下被撞船舷侧结构的碰撞性能进行了定量的分析研究.结果表明:船艏形式及刚度对船舶碰撞安全性会产生影响,撞击船艏部与被撞船舷侧的接触面积越大,舷侧结构吸能越多,其碰撞安全性也就越好.考虑实际船艏结构刚度的影响可以提高极限撞深,从而增加舷侧各构件的吸能效果,对舷侧结构的碰撞安全性有利. 相似文献
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《中国航海》2017,(1)
以液化天然气(Liquefied Natural Gas,LNG)作为燃料的LNG动力船的安全营运问题是当前的研究热点。针对计划预防维修管理模式存在的问题及船用LNG和船舶的高可靠性的特点,提出基于可靠性维修方法的LNG动力船安全分析,进行船用LNG和船舶的系统划分及风险评价;阐述可靠性维修方法,将其应用于风险逻辑决断分析中,确定以风险为中心(Risk-Centred Measure,RCM)的LNG动力船故障失效控制方式,进而确立相应的LNG动力船风险预控方案。应用结果表明:LNG动力船的安全性主要表现为LNG泄漏所引发的风险,加强LNG系统维护是提高LNG动力船安全营运的主要手段。RCM方法应用于LNG动力船安全性风险预控,有利于提升LNG动力船营运中的操作安全性。 相似文献
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Joanne Ellis Björn Forsman Susann Gehl Uwe Langbecker Kurt Riedel Pierre C. Sames 《WMU Journal of Maritime Affairs》2008,7(1):133-149
Commercial shipping of containerized goods involves certain risks for human safety and environment. In order to actively manage these risks, they must be identified, analyzed, modeled, and quantified. This requires a systematical analysis of design and operation of container vessels. Within the EU-funded research project SAFEDOR, a Formal Safety Assessment has been applied to establish the current safety level of generic container ships and to identify potential cost-effective risk control options. This paper describes a structured approach to develop the underlying high-level risk model. It is structured as risk contribution tree consisting of a series of fault trees and event trees for the major accident categories. Statistical analysis of casualty data is used to estimate the probability of occurrence. Finally, the summation overall individual risk contributions yields the current risk pro file for the operation of container vessels is presented as FN-curve. 相似文献
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LUE Jian-wei QI Huan SHI Wen-jie 《船舶与海洋工程学报》2005,4(4):23-28
The risks in development of navy vessels were explored, The resources of technical risk in the design and development of vessels were mentioned, It was pointed that technical risk dominated the other risk components. Based on the writers' understanding and experience from risk analysis and risk ,nanagement to the development of a navy vessel, four measure indexes of technical risk were presented. The decision criteria and the rules corresponding to the indexes were estahlished by the statistic information, 相似文献
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The paper outlines a rational design procedure for bridge piers and pylons against ship collision impacts. Firstly, a set of risk acceptance criteria are proposed. This is followed by a mathematically based procedure for calculation of the probability of critical ship meeting situations near the bridge, and the probability of ship collision accidents caused by human errors as well as technical errors. This first part of the paper leads to identification of the largest striking ship, “design vessels”, a given bridge pier must withstand without structural failure in order for the bridge connection to fulfil the risk acceptance criteria. The final part of the paper is devoted to an analysis of the needed impact capacity for the bridge pylons and piers exposed to ship bow impact loads from these “design vessels”. For a number of different ship types and different tonnage merchant vessels, load – displacement relations for ship bow collisions against rigid walls are derived. Based on these comprehensive numerical results, a new empirical relation is derived which is suited for design against bow collisions. This expression for maximum bow collision forces is compared with a previously published expression for ice-strengthened ships and with existing standards for assessment of bow crushing forces. It is shown that there is need for an update of these existing standards. For design of piers and pylons against local impact pressure loads, a pressure - area relation for bulbous bow impacts is derived. 相似文献
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A new index, namely the overall motion induced interruptions (OMII), is proposed as a seakeeping criterion for fishing vessels, to compare ships having different hull forms and dimensions by means of an only parameter, in a human centred approach, mainly related to the onboard risk level. Therefore, the first aim of the paper is to investigate the factors affecting fishing vessels’ seakeeping performances to improve them to reduce the high number of injuries occurring during fishing operations, mainly related to both risk perception and harsh weather conditions. Despite the classical approach, where motion induced interruption is determined for a certain sea state with regard to several location points, the new index accounts for all crew members’ positions on the working deck, all heading angles the vessel may experience during fishing operations, based on relevant operating scenario, and all sea states the ship may encounter in the fishing area. The influence of position, heading angles and sea states on the attained risk level is fully investigated, analysing seakeeping performances of four fishing vessels with different hull forms and dimensions. Finally, a new operability criterion is proposed, based on OMII, to investigate the influence of ship size and operating scenario on the risk of injuries during fishing operations. Main factors affecting fishing vessels’ seakeeping performances are fully discussed, paying attention to relevant correlation with ship roll natural period. 相似文献
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我国有数量庞大的渔业船舶,其稳性对船舶安全生产、船型设计开发等方面产生重要影响。本文整理现行渔业船舶稳性衡准要求;分析稳性衡准数的数理实质;进而应用国内外普遍认可的总体设计软件NAPA进行渔业船舶稳性衡准数核算方法研究开发。有助于提高对渔业船舶稳性的认知水平和校核能力,亦可为具备类似衡准要求的其他船型设计研发及稳性校核工具开发提供借鉴。 相似文献
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Martin Hassel Ingrid Bouwer Utne Jan Erik Vinnem 《WMU Journal of Maritime Affairs》2017,16(2):175-195
The Norwegian Petroleum Safety Authority (PSA) requires offshore petroleum operators on the Norwegian Continental Shelf (NCS) to perform risk assessments of impacts (allisions) between passing ships and offshore installations. These risk assessments provide a basis for defining the allision accidental load that the installation shall be designed for. Even though the risk of allision is small, the potential consequences can be catastrophic. In a worst-case scenario, an allision may result in the total loss of an installation. The ageing industry standard allision risk model, COLLIDE, calculates the risk of impacts between passing (non-field-related) ships and installations based on Automatic Identification System (AIS) data. Both the COLLIDE risk model and a new Bayesian allision risk model currently under development are highly sensitive to variations in vessels’ passing distances, especially close proximity passings. Allision risk assessments are typically performed during the design and development phase of an installation, which means that historical AIS data are used “as is”, disregarding future changes to the traffic pattern when the new installation is placed on a location. This article presents an empirical study of one of the most important variables used to calculate the risk of allision from passing vessels, namely passing distance. The study shows that merchant vessels alter course to achieve a safe passing distance to new surface offshore petroleum installations. This indicates that the results of current allision risk assessments are overly conservative. 相似文献
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针对拟实施的航道整治工程,基于口岸直水道实际情况,对照航道通航环境影响因子的危险度评价标准,选取各影响因子作为评价指标,分析其对口岸直水道的通航安全的影响并进行风险评价,得到相应的风险级别。 相似文献
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基于LNG双燃料大型汽车运输船项目的开发介绍了以LNG作为船舶燃料的规范标准和风险评估流程,进一步从ME-GI双燃料主机、LNG燃料舱、燃料供给系统等方面阐述了LNG双燃料大型汽车运输船设计和建造的关键技术,为建造经济、环保、安全的LNG动力船提供了建设性思路。 相似文献