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WBS(Work Breakdown Structure)是一种用于提高项目管理水平的建设项目结构和编码体系,本文对WBS分解进行讨论,提出WBS分解的原则,并研究项目WBS分解的特点,进而制定适用于吹填造地项目特点的WBS分解方法,并举例说明。 相似文献
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《中国远洋航务公告》1995,(6)
A shake- up in Shanghai international freight forwarding system will take place A decision aiming at strengthening the coordination of foreign trade transportation and administration of international freight forwarding work was made by Shanghai Foreign Trade Transportation Work Conference. Shanghai plans to achieve US $ 10. 6bn in export with a total of 8. 5mn tons in international shipping volume this year. Currently,there are 82 freight forwarding a- 相似文献
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Risk behind prosperity
Risk threatens the safety of offshore oil-gas operation at all times.Mr.Zhou Bin,Deputy Director of the No.1 Department of National Administration of Work Safety(offshore exploration of oil and gas safety officejintroduced that
offshore oil operations are high-risk specialized operations with bad environment,limited space and hightechnical content.The density of installations,equipment and facilities is high,and there are various kinds of dangers and dangerous factors in the operating places where large amounts of inflammable and explosive materials are stored:The natural disasters like typhoon,tropical cyclone,storm surge,tsunami,earthquake and sea ice are also seriously threatening the safety of offshore oil operation.In particular,where the offshore oil operation is far away from land,it would be difficult for workers to escape and for rescue when accidents happen. 相似文献
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无氧Cu和CuCrZr合金的连接是聚变装置中偏滤器部件加工的关键技术问题.本研究采用急冷甩带制备了Cu_(78.9)Ni_(11.3)P_(9.8)和Cu_(79.1)Ni_(5.4)P_(6.3)Sn_(9.2)两种非晶钎料,用于Cu和CuCrZr的钎焊连接.通过X-射线衍射、差示扫描量热和热差分析技术、光学金相和电子探针方法对比研究了两种非晶钎料的晶化与熔化行为、焊缝的元素成分分布、组织形貌和物相组成.结果表明:Cu_(78.9)Ni_(11.3)P_(9.8)和Cu_(79.1)Ni_(5.4)P_(6.3)Sn_(9.2)非晶的晶化模式不同,但两者的晶化和凝固产物均为(Cu,Ni)_3P与Cu固溶体相的混合组织,它们的液相线温度分别为661°C和645℃;两种非晶在735℃钎焊温度下均可获得由Cu固溶体、(Cu,Ni)_3P和(Ni,Cr,Cu)_2P金属间化合物相组成的无裂纹接头组织.其中,Cu_(79.1)Ni_(5.4)P_(6.3)Sn_(9.2)焊缝中的(Ni,Cr,Cu)_2P围绕(Cu,Ni)_3P晶粒呈网状连续析出,而Cu_(78.9)Ni_(11.3)P_(9.8)焊缝中的金属间化合物相不呈网状分布. 相似文献
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在2010年2月1日召开的亚洲船级社特别会议上,六家发起成员,即中国船级社(CCS)、韩国船级社(KR)、日本船级社(NK)、印度船级社(IRS)、印尼船级社(BKI)和越南船级社(VR),批准亚洲船级社协会(ACS)章程 相似文献
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以国内外专利数据为分析对象,采用专利计量分析的技术方法深入研究浮式生产储油卸油装置(FPSO)开发技术的演化态势,对FPSO船型开发领域的核心专利进行分析,总结出FPSO船型开发的发展路线.结果表明:当前FPSO船型开发领域的主要研究方向是旧船改造、新概念FPSO和通用FPSO.旧船改造的技术点主要聚焦于超大型船舶设计;新概念FPSO的技术点主要集中于浮体形状设计、上部甲板大型化和刚性立管作业问题;通用FPSO的技术点主要侧重于标准化船壳设计、模块化FPSO设计和FPSO一体化建造,未来企业可考虑在模块化FPSO的上甲板承载与布局、管线布置、生活区布置、减摇和抑制垂荡问题上进行专利布局研究. 相似文献
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依据不同的功能要求,浮式生产卸货装置(FPSO)的主甲板上设置多个工艺模块平台,每一个模块架构平台与FPSO主船体的连接结构——模块支墩,是FPSO结构设计的关键技术,其可靠性和实用性将直接影响FPSO生产流程的正常运转。结合近20多年来对FPSO的设计经验,提出了模块支墩设计的不同理念及结构设计特点,并对多型FPSO的模块支墩分析对比其形式特点、适用性及优缺点,同时从工程设计经验角度,阐述了模块支墩的结构设计原则和结构强度的分析计算及算例。所提供的设计原则及相应的经验可供相关设计人员借鉴。 相似文献
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随着我国海洋工程在深度和广度上的发展,FPSO上部模块将成为海洋工程单位的重要产品之一。以一些在建的FPSO上部模块建造项目为例,描述了FPSO上部模块结构建造的一般特点,介绍了FPSO上部模块结构的批量建造方法,并简要分析了批量建造方法的实施对生产成本、建造周期、产品质量带来的影响。 相似文献
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Aiming to overcome the limitations of conventional offshore field development concepts (dry tree or subsea tree) for petroleum production in ultra-deep water, a new alternative offshore field development solution, termed as Deepwater Artificial Seabed (DAS) system, is proposed. The DAS system works in concert with dynamic positioning (DP) floaters, such as dynamically positioned Floating Production, Storage and Offloading (FPSO) vessels. Rather than relying on the passive mooring system, the DP maintains the reliable position of the FPSO with steering and propulsion units. Nonetheless, critical DP failures, which has potential to cause the drift-off scenario for the FPSO, poses a serious threat to the structural safety of the DAS system. Therefore, it is crucial to establish operational limits for the DP FPSO to prevent such accidents. In this study, a 3-phase probabilistic modelling methodology is proposed to predict safety limits for the operation of the DP FPSO. A surrogate model is established by the Support Vector Machine (SVM) algorithm so as to decrease the computational cost due to the generation of large statistical samples. The statistical distribution of the operational safety limits of FPSO is simulated by the successive approximations through the fully-coupled drift-off analysis. The accuracy of the proposed methodology is verified by a series of mathematical tests. In order to validate the effectiveness of the methodology, the safety limit prediction of the FPSO for the DAS system is taken as a case study. The critical positions of the FPSO are predicted in real time and provides ample time and information for operators’ decision-making by the visualization of the safe moving range of the FPSO. The study contributes to the safety control of DP operations on floating production units in an efficient manner. 相似文献
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Global strength is a significant item for floatingproduction storage and offloading (FPSO) design, and steel weightplays an important role in the building costs of FPSO. It is the maintask to consider and combine these two aspects by optimizing hulldimensions. There are many optional methods for the globalstrength analysis. A common method is to use the ABS FPSOEagle software to analyze the global strength including the rulecheck and direct strength analysis. And the same method can beadopted for the FPSO hull optimization by changing the depth.After calculation and optimization, the results are compared andanalyzed. The results can be used as a reference for the futuredesign or quotation purpose. 相似文献
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通过对目前在渤海和南海相关海域作业的10艘具有代表性的FPSO的船型、油气处理功能、系泊系统三个重要组成部分的17个参数进行聚类对比分析计算,将10艘FPSO聚类为四大类:海洋石油101、海洋石油102、海洋石油105一类;海洋石油109、海洋石油112、海洋石油113二类;海洋石油111、海洋石油115和海洋石油116三类;海洋石油104四类。从而为同类中不同FPSO个体的维护、管理提供参照。 相似文献