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防火、探火与灭火是船舶自身安全的重点之一,也是海事主管机关开展港口国监督检查和船旗国监督检查的重点检查项目.以船旗国监督检查中发现的机舱通风导管结构防火存在的缺陷为例,重点分析《国内航行海船法定检验技术规则》中对A类机器处所通风导管耐火完整性的要求,为船舶检验和监督检查提供参考. 相似文献
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船舶救生设备在psc检查时是重点检查项目,而船员往往对封闭式救生艇的承载释放装置不熟悉,导致在检查时出现各种各样的缺陷。文章结合救生艇承载释放装置原理,综合了近期救生艇检查时常见缺陷情况,对管理要点进行了总结。 相似文献
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由于PSC检查机制所发挥的作用日益明显,近几年各方对港口国检查机制也提出了更高的要求,比如要求提高全球PSC检查标准的一致性以及进一步完善港口国检查目标船风险评估系统等.而上述两方面问题也成为当前港口国检查热门话题.尤其是后者,更是当今各港口国检查备忘录组织的重点研究方向. 相似文献
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介绍美国海岸警卫队(USCG)的港口国监督检查程序,统计其历年检查船舶的数据,根据检查数量、滞留数量、滞留率、滞留缺陷类别、受检船型、保安检查等分析USCG检查的特点和关注重点,最后从消除缺陷、关注重点港口、应急演练、保安和压载水管理等方面提出船舶有效应对USCG检查的建议,供航运公司和船舶参考。 相似文献
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<正>2023年5月,亚太地区港口国监督谅解备忘录(又称东京备忘录,Tokyo MoU)发布了2022年港口国监督(以下简称PSC)年报,详细介绍了PSC检查的各项数据。根据年报,本文将针对2022年东京备忘录开展的PSC检查各项工作数据作重点分析和解读,为业界进一步了解港口国监督检查走向及重点提供参考。 相似文献
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介绍了我国港口资源的整合现状,指出港口整合可以提升港口的形象和地位,也为区域经济和城市的发展注入强大的动力。最后指出在港口资源整合中要避免的几个问题。 相似文献
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广州集装箱码头的轮胎式场桥小车制动器使用10多年后,出现了许多问题,故进行了改造.分析了轮胎式集装箱龙门起重机小车制动器的主要故障现象,提出了改造方案,并加以实施. 相似文献
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本文对现有的选定球面轴承的三种工程方法进行了分析比较.引入了“合力系数”,并给出了合力方向上投影面积的精确解. 相似文献
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分析柴油机故障中常见的机体裂纹故障原因,认为由于设计缺陷和管理及操作不当,易造成船舶柴油机缸体上的裂纹多发生在气缸套凸肩处。如不及时处理这些裂纹和故障,就会造成缸套的裂纹直至出现缸套漏水等严重后果,针对NANTAIQUEEN轮柴油机对该类型故障的检修提出具体措施。 相似文献
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The hydrophysical and hydrochemical structure of the Sea of Azov, with developed bottom anoxia, was studied during the RV “Akvanavt” cruise from July 31 to August 03, 2001. The anoxic zone with a thickness from 0.5 to 4 m above the bottom was found in all deep regions of the Sea. Concentrations of hydrochemical parameters were similar to the pronounced anoxic conditions (about 90 mmol m− 3 of hydrogen sulfide, 17 mmol m− 3 of ammonia, 6 mmol m− 3 of phosphate, 7 mmol m− 3 of total manganese). The hydrophysical structure was characterized by the uniform distribution of temperature in the upper 6–7 m mixed layer (UML). Below this a thin (0.4–0.8 m) thermocline layer was observed, just above the anoxic waters. Formation of this phenomenon was connected with that summer weather conditions. Intensive rains led to increased influx of river waters in June. That resulted in large input of allochtonous organic matter (OM) and inorganic nutrients; the latter were consumed on the additional autochthonous organic matter production. In July the weather was characterized by a significant rise in the daily averaged air temperature and large oscillations of temperature during the day. In this period a wind of constant direction was absent, but wind bursts were observed. The completed analyses showed that the formation of such a structure could be connected with the following factors: (i) positive growth trends of the daily averaged temperature and the daily oscillations of temperature, (ii) presence of wind bursts. The joint action of these factors resulted in the formation of the UML. The amplitude of wind bursts determined the depth of UML, and the value of trend determined the value of the temperature change in the thermocline. An initial presence of bottom halocline (caused by the Black Sea water influx to the bottom of the Sea of Azov) prevented the heating of the bottom layer and therefore led to an increase of vertical gradient of temperature in the thermocline. The spatial distribution of the turbulent exchange coefficient confirmed the existence of a “stagnation” area located above the anoxia zone, which is also, apparently, the reason for its occurrence. 相似文献
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