失效

In order to assure that the plant can be safely shutdown and to comply with the requirement of 10CFR 50.62, various ATWS prevention mitigation features have been implemented in the design of Lungmen Plant, including Fine Motion Control Rod DriveRun In, Alternate Rod Insertion, Automatic Initiation of Standby Liquid Control System, Reactor Internal Pump Trip/ Runback, Feedwater Flow Runback, and Inhibition of Automatic Depressurization System.

摘要 核四厂属进步型沸水式核能电厂，其采用数位式仪控系统设计，考虑设计上可能存在软体共因失效问题，导致反应器无法顺利急停，产生预期暂态未急停（Anticipated Transient Without Scram， ATWS）事件，为确保反应器安全，并符合10CFR 50.62法规要求，电厂设计上装设有缓抑ATWS事故之软体与硬体设施，包括微调控制棒驱动机构插入、替代性控制棒插入、备用硼液控制系统自动启动、炉内泵跳脱、炉内泵回退、饲水回退与禁止自动释压系统开启等型态。

The studies on durability of bridge structures including concrete,rustiness of reinforcement steel,loss of pre-stress caused by shrinkage and creep of concrete,fatigue damnification and system durability of bridge structures.

随着高强度预应力钢材的广泛应用，使桥梁结构变得越来越薄，这要求更需注意由于结构的耐久性不足而导致的结构失效。

For investors, the main issue is the second failing – in the safety nets that can catch disastrous risk-taking in rare moments when models are irrelevant.

对投资者而言，主要问题在于第二处败笔——安全防范措施。一旦模型失效，安全防范机制可以制止灾难性的冒险行动。

Through analysis on principle of safety valve and in combination with the function of safety valve in Hechuan Salt Mine,this paper elaborates the important role that safety valve plays in mining as well as the importance of daily maintenance for safety valve .

通过对安全阀的原理分析，结合合川盐矿安全阀起到的作用，说明了安全阀在矿山开采中的重要作用，并阐述了安全阀失效后的危害及安全阀的日常保养和维修的重要性。

Ortega's left-wing Sandinista party found that the law barring consecutive terms was invalid.

他们发现，组织奥尔特加竞选按连任的法律已经失效。

The tension experiment on the model material was carried out, and its stress-strain equation was also obtained. The three-point bending experiment on the scale-down model was conducted under two different supporting conditions.

通过对护栏缩比模型进行三点弯曲试验研究，考虑了不同支座条件对变形和能量吸收的影响，归纳了失效试件的变形种类并计算了相应的变形能。

The re-sults show that reasonable scantling of lug and cut - out is important to enhance the fatigue life of the CSDand the definition of fatigue chterion should be based on the consequence of fatigue failure.

结果表明：合理的补板以及腹板开口的尺寸可以提高该局部结构的疲劳寿命；疲劳损伤的定义需要根据疲劳失效后果加以确定从而给出基于风险的最佳检测和维修计划。

The failure of a turbine axes was investigated by sclerometer,optical microscopy,SEM,and mechanics analyses.

通过硬度检测、金相检验、宏观及微观断口分析，结合力学分析证实了汽轮机轴失效是由于轴肩变径处加工刀痕导致应力集中，造成多条疲劳裂纹萌生、扩展及最终的断裂，提出了防止汽轮机轴疲劳断裂的措施。

The influence of lacking strength of materials and screw thread are treated in this paper, as well as corrosion questions on complicated project situation.

本文从材料、环境和磨损三个方面对石油气井套管钻柱失效原因进行了分析。

Two, Department of Mechanical Seal Leakage of water a second possibility is that mechanical failure sealant.

二、机械密封处渗漏水的第二种可能性是机械密封胶失效。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。