共查询到19条相似文献,搜索用时 125 毫秒
1.
简述大型液氧、液氮贮槽的常规安全措施,结合大型低温液体贮槽的爆炸事故,阐述在排液口设置重锤式快速切断阀和顶盖设计为薄弱结构的必要性及其作用,分析在大型液氧、液氮贮槽槽区不设安全围堰的可行性。 相似文献
2.
本文对导致液氧贮槽发生灾难性爆炸的机理作了研究。回顾了历史上出现的一些重大事故和试验结果。并用贮槽断裂故障树枝图进行逻辑推理分析。最后指出减少贮槽现场运行的人为差错,是解决安全问题的有效办法。图3。 相似文献
3.
针对大型液氧贮槽普遍存在的大量放空造成的能源浪费现象,分析了影响贮槽放空的主要因素,通过对各主要因素影响贮槽放空量的计算分析,提出了通过提高空分装置液氧产品过冷度实现液氧贮槽零放空的设计优化措施,并对现有的液氧贮槽压力控制方案进行了优化。 相似文献
4.
600 m3低压液氧贮槽向20 m3中压液氧贮槽转注液氧时,发生了一起液氧泵后管道因冰堵而超压的故障。介绍液氧转注流程和故障现象,分析液氧管道结冰的原因,最后阐述故障解决方法和液氧转注系统管路的改进措施。 相似文献
5.
6.
液氧泵电机轴承抱死电机,使其燃烧,引起液氧泵及管道燃烧。介绍了事故的经过和损失,分析了事故原因,最后阐述了此类爆炸事故的防范措施。 相似文献
7.
8.
介绍一起液氧内压缩流程中液氧泵回流阀爆裂事故的经过和破坏情况,初步认为事故的原因可能是阀门制造缺陷导致升压过程中上阀体破裂后高压液氧泄漏,进而引发化学性爆炸。最后提出了防止液氧泵回流阀燃爆的预防措施。 相似文献
9.
10.
11.
12.
通过对一起氢气瓶爆炸事故处理,总结了处置潜在爆炸危险气瓶的成功方案,应用事故树分析方法,结合生产装置实际情况和前后爆炸的3只气瓶,探讨分析了引起氢气瓶爆炸的直接原因,有针对性的提出了防止同类事故发生的措施. 相似文献
13.
详细阐述了防爆毯与防爆罐组合后其防爆性能生物效应试验的方法、条件,并对试验结果进行了科学的分析,在此基础上提出了对防爆罐改进的一些设想。 相似文献
14.
主要介绍20.4K低温氦气经过加温后给液氧贮箱增压的试验技术。对试验设备、试验方法、试验过程及试验结果做了简要的介绍。 相似文献
15.
为探讨工业炸药硝酸铵溶液储罐安全措施的有效性,运用道化学火灾爆炸危险指数法对工业炸药生产用硝酸铵溶液储罐进行分析,得到了其补偿前、后的火灾爆炸指数、暴露半径、暴露区域面积、危险等级等参数。分析表明:在安全措施补偿前,硝酸铵溶液储罐的火灾爆炸指数为176.90,暴露半径为45.29 m,暴露区域面积为6 440.72 m2,危险等级为非常大;在采用工艺控制、危险物质隔离及消防设施等补偿控制措施后,火灾爆炸指数降至84.91,暴露半径降至21.74 m,暴露区域面积降至1 484.05 m2,危险等级降至较轻。证明目前采取的安全措施是有效的、可行的。 相似文献
16.
水下爆炸炸药能测量消除边界效应的研究 总被引:6,自引:0,他引:6
在小型爆炸水池中测量炸药的爆炸能量,会遇到边界反射问题。文中就如何消除边界效应,选取了几种能衰减冲击波能的材料和措施进行实测对比。结果表明:在水池内壁附近设置一种气泡帷幕,可有效地削弱反射冲击波,使气泡脉动周期增大,从而使所测总能量(Et)更接近炸药的爆热(Qv)。 相似文献
17.
D. F. Susan K. H. Eckelmeyer A. C. Kilgo 《Journal of Failure Analysis and Prevention》2005,5(5):65-74
A severe fire and explosion occurred at a propane storage yard in Truth or Consequences, N.M., when a truck ran into the pumping
and plumbing system beneath a large propane tank. The storage tank emptied when the liquid-phase excess flow valve tore out
of the tank. The ensuing fire engulfed several propane delivery trucks, causing one of them to explode. A series of elevated-temperature
stress-rupture tears developed along the top of a 9800 L (2600 gal) truck-mounted tank as it was heated by the fire. Unstable
fracture then occurred suddenly along the length of the tank and around both end caps, along the girth welds connecting the
end caps to the center portion of the tank. The remaining contents of the tank were suddenly released, aerosolized, and combusted,
creating a powerful boiling liquid expanding vapor explosion (BLEVE). Based on metallography of the tank pieces, the approximate
tank temperature at the onset of the BLEVE was determined. Metallurgical analysis of the ruptured tank also permitted several
hypotheses regarding BLEVE mechanisms to be evaluated. Suggestions are made for additional work that could provide improved
predictive capabilities regarding BLEVEs and for methods to decrease the susceptibility of propane tanks to BLEVEs. 相似文献
18.
19.
Sungdeok Cha Hanseong Son Junbeom Yoo Eunkyung Jee Poong Hyun Seong 《Reliability Engineering & System Safety》2003,82(1):11-20
Fault tree analysis, the most widely used safety analysis technique in industry, is often applied manually. Although techniques such as cutset analysis or probabilistic analysis can be applied on the fault tree to derive further insights, they are inadequate in locating flaws when failure modes in fault tree nodes are incorrectly identified or when causal relationships among failure modes are inaccurately specified. In this paper, we demonstrate that model checking technique is a powerful tool that can formally validate the accuracy of fault trees. We used a real-time model checker UPPAAL because the system we used as the case study, nuclear power emergency shutdown software named Wolsong SDS2, has real-time requirements. By translating functional requirements written in SCR-style tabular notation into timed automata, two types of properties were verified: (1) if failure mode described in a fault tree node is consistent with the system's behavioral model; and (2) whether or not a fault tree node has been accurately decomposed. A group of domain engineers with detailed technical knowledge of Wolsong SDS2 and safety analysis techniques developed fault tree used in the case study. However, model checking technique detected subtle ambiguities present in the fault tree. 相似文献