Four different topics for high-temperature components, namely the development of the assessment codes for the structural integrity of high-temperature components, the application of continuous damage mechanics and probabilistic damage mode on the life assessment of high-temperature components, the life extension for high-temperature components and a proposed strategy for remanufacturing of high-temperature components were discussed in this paper. These topics should provide some important insights for the design and re-design of high-temperature components.

压力管道广泛应用于各工业领域和城市管网，按我国《压力管道安全监察规定》，压力管道可分为长输管道、工业管道和公用管道。本文从我国压力管道的现状出发，简要阐述了风险分析技术在不同管道中的应用，旨在促进风险分析技术应用的推广和提高我国压力管道风险分析管理水平。

采用有限元分析法对内压作用下外拱内壁局部减薄弯管的极限载荷进行研究。计算结果与外拱外壁弯管试验及有限元计算结果进行比较表明，外拱内壁局部减薄弯管极限内压较外拱外壁局部减薄弯管极限内压偏低。由有限元计算结果数据拟合出了外拱内壁局部减薄弯管塑性极限内压的计算公式。

For the leakage of high pressure air coler tubes caused by corrosion, the effect of hydrodynamic erosion on corrosion process is analyzed by. CFD simulation. Simulated is the actual flow of high pressure air cooler tubes in the hydrocracking unit of a petrochemical and SIMPLEC method are adopted. The numerical simulation results are in good agreement with the К-εturbulence model and SIMPLEC method are adopted. The numerical simulation results are in good agreement with the inspection results of tubes. Furthermore, the flow characteristic in air cooler tubes with different lining tube structure is studied, which would provide helpful information for the improvement of air cooler tubes.

近些年来，国内外对高温炉管常用的HK40、HP-Nh和Cr5Mo等材料已有颇多研究，但对Cr9Mo炉管材料，还依然集中在其焊接性能方面，而对该材料制成的炉管寿命预测方面的研究开展得较少。本文针对长期服役后的Cr9Mo材料进行了研究，并在此基础上，确定炉管材料的老化程度，根据炉管的载荷，预测炉管的剩余寿命。这些研究对Cr9Mo炉管的全周期寿命设计及高温性能预测具有指导意义。