共查询到18条相似文献,搜索用时 78 毫秒
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本文对基于风险的检验(RBI)在蒸汽管道系统中的应用进行了研究,重点介绍了具体的蒸汽管道系统的失效可能性、失效后果和风险矩阵。通过风险矩阵分析了检验方法的优先选择,同时根据风险矩阵确定检验计划 相似文献
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借鉴国际管道技术委员会对输气管道提出的失效原因以及RBI思路,利用“专家打分法”对管道安装、维护、保养、检验等各个环节,量化发生事故的可能性和后果的严重程度,从而以半定量法确定在用工业管道风险值,进而进行风险预警,为压力管道使用单位、河北省质监局安全监察工作提出合理化建议。 相似文献
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史有刚 《中国锅炉压力容器安全》2010,(11):29-31
本文基于设备风险管理的基本理论,结合油田静设备(主要包含压力容器、常压储罐、埋地集输管道等)的使用及检验检修情况,引入风险管理的理念,提出了油田静设备基于风险的安全管理思路,并针对压力容器、常压储罐、埋地集输管道的不同特点,对其风险管理的方法进行了研究和应用试点,取得了较好效果。 相似文献
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应用CFD软件Fluent6.3对液化气(liquefied petroleum gas,LPG)储罐在火灾条件下的热响应过程进行了三维数值模拟。研究了喷射火作用下LPG储罐罐壁温度、内部介质温度和压力响应的特点,分析了液相介质充装率和储罐壁厚对储罐热响应的影响。结果表明,液相介质充装率越高,储罐失效时间越短,并且当充装率为60%~85%时储罐的失效时间下降更加明显;储罐壁厚越厚,火焰作用下升压越慢,当壁厚大于14mm时,壁厚对储罐升压的影响明显变小。据此,可选择合适的充装率和合理的壁厚以减缓储罐的升压速度,为预防和控制液化气储罐事故的发生争取时间。 相似文献
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压力容器投用后首次内外部检验周期一般为3年。笔者在对某液化气储罐站内的2台50m^3液化气站储罐进行投用后首次内外部检验时,发现其中1台储罐的内表面有一 个超标凹坑。从检查的情况分析,是投用前人为造成的机械损伤, 相似文献
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2005年9月,某石油储备基地300×10 4m2原油储罐建造工程开工,当地锅检所对全部储罐现场制造安装进行了监督检验。2006年5月,锅检所对施工单位已完成自检的T101、T103、T105、T106和T201等5台10×104 m3双盘浮顶储罐纵环焊缝进行第三方无损检测抽查时, 相似文献
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介绍了基于风险的检测(RBI)技术的主要内容及其在催化裂化装置上的应用情况。该评价方法的实施对保证生产装置安全运行及提高管理水平有重要意义。 相似文献
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Mohammad Dadashzadeh Sergii Kashkarov Dmitriy Makarov Vladimir Molkov 《International Journal of Hydrogen Energy》2018,43(12):6462-6475
A quantitative risk assessment of onboard hydrogen-powered vehicle storage, exposed to a fire, is performed. The risk is defined twofold as a cost of human life per vehicle fire, and annual fatality rate per vehicle. The increase of fire resistance rating of the storage tank is demonstrated to drastically reduce the risk to acceptable level. Hazard distances are calculated by validated engineering tools for blast wave and fireball, which follow catastrophic tank rupture in a fire, act in all directions and have larger hazard distances compared to jet fire. The fatality cash value, probabilities of vehicle fire and failure of thermally activated pressure relief device are taken from published sources. A vulnerability probit function is employed to calculate probability of emergency operations' failure to control fire and prevent tank rupture. The risk is presented as a function of fire resistance rating of onboard storage. 相似文献
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对PX装置运用基于风险的检验技术,识别装置内的高度危害介质及其危害种类,工艺危害性分析及损伤机理分析表明主要的损伤机理是高温氢损伤、回火脆化和外部腐蚀。定量风险分析结果显示,该PX装置中155台压力容器中高风险设备项6个,占5.09%;中风险155项,占78.67%;低风险55项,占18.4%。根据设备风险制定推荐性检验策略,为装置的风险识别和降低风险提供参考。 相似文献
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R. Urbanczyk K. Peinecke M. Felderhoff K. Hauschild W. Kersten S. Peil D. Bathen 《International Journal of Hydrogen Energy》2014
Here we present the development of an aluminium alloy based hydrogen storage tank, charged with Ti-doped sodium aluminium hexahydride Na3AlH6. This hydride has a theoretical hydrogen storage capacity of 3 mass-% and can be operated at lower pressure compared to sodium alanate NaAlH4. The tank was made of aluminium alloy EN AW 6082 T6. The heat transfer was realised through an oil flow in a bayonet heat exchanger, manufactured by extrusion moulding from aluminium alloy EN AW 6060 T6. Na3AlH6 is prepared from 4 mol-% TiCl3 doped sodium aluminium tetrahydride NaAlH4 by addition of two moles of sodium hydride NaH in ball milling process. The hydrogen storage tank was filled with 213 g of doped Na3AlH6 in dehydrogenated state. Maximum of 3.6 g (1.7 mass-% of the hydride mass) of hydrogen was released from the hydride at approximately 450 K and the same hydrogen mass was consumed at 2.5 MPa hydrogenation pressure. 45 cycle tests (rehydrogenation and dehydrogenation) were carried out without any failure of the tank or its components. Operation of the tank under real conditions indicated the possibility for applications with stationary HT-PEM fuel cell systems. 相似文献
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AbstractThe application of risk based inspection (RBI) technology in five typical cases in Jiangsu Province, China was summarised and reviewed. Based on 10 year experiences of risk assessment, some key problems, which require special attention in the process of publicising and applying RBI technology in China, were put forward, and the integrity management of pressurised equipment and the qualification requirement for organisation undertaking the RBI projects were emphasised as well. Responses to RBI demands from Chinese petrochemical enterprises were analysed and recommended to be categorised into three groups. To conduct RBI successfully in China, the importance of combining a first rank RBI software and a well organised RBI team is proposed. A sinicised database of materials and chemicals owing to Chinese intellectual property is suggested to be built gradually as well. 相似文献
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A new approach to estimate the heat loss from thermal energy storage tank foundations is presented. Results are presented through analytical correlations based on numerical solutions for the steady‐state heat conduction problem for thermal energy slab‐on‐grade tanks with uniform insulation. Model results were verified with other well‐established benchmark problems with similar boundary conditions and validated with experimental data with excellent agreement. In addition to the TES foundation heat loss, new correlations for the maximum temperature and for the radial evolution of the temperature underneath the insulation layer are also provided, giving important information related to the tank foundation design. The correlated variables are of primordial importance in the tank foundation design because, due to the typical high operating storage temperatures, an inappropriate tank foundation insulation would lead not only to a not desired loss of energy but also to an inadmissible increase of the temperatures underneath the insulation layer, affecting the structural stability of the tank. The proposed correlations provide a quick method for the estimation of total tank foundation heat losses and soil maximum temperature reached underneath the insulation layer, saving time, and cost on the engineering tank foundation design process. Finally, a comprehensive parametric analysis of the variables of interest is made and a set of cases covering a wide range of tank sizes, insulation levels, depths to water table, and storage temperatures are solved. 相似文献
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本文简介了风险评估技术的原理和方法,以及该技术在石化储运类管线中的应用,采用半定量风险评估方法进行风险分析。根据风险分析的结果,此次所评估的储运类管线的主要失效模式为外部腐蚀,其内部腐蚀减薄和应力腐蚀的敏感性较低。通过应力腐蚀试验,试验结果也验证了这些管道的抗应力腐蚀性能良好。 相似文献
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I.S ChoiJ.D Kim E Kim J.I Yoon 《International Journal of Heat and Mass Transfer》2002,45(7):1407-1412
This paper is concerned with the development of a new method for making and separating ice and saving floated ice by installing an evaporation plate at underwater within a storage tank. In a conventional harvest-type ice storage system, a tank saves ice by separating a formed ice from an installed evaporation plate, which is located above an ice storage tank as an ice storage system. A new harvest-type method shows better heat transfer efficiency than a convectional method. It is because the evaporation panel is directly contacted with water in a storage tank. Also, at a conventional system a circulating pump, a circulating water distributor and a piping are installed, but these components are not necessary in a new method. In this study two kinds of ice storage systems are experimentally investigated to study the thermal characteristics of ice storage tanks. The results show the applicable possibility and performance enhancement of a new type. 相似文献