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用高强度细晶粒结构钢StE47现场建造的大型球形压力容器,在BASF公司已安装、运行了近十五年。下面以最近建造的一台为例,对无损探伤中我们认为重要的几个问题加以讨论。 这台球形气罐是1980年3月至9月间建造的,其容量为2100m~3,所用材料为符合VdTUV材料规范357的TTStE47钢。它是面支承式(图1),采用冷成形球瓣。球体由上、下极带和中间带组成。下极带有七块
Large spherical pressure vessels constructed on-site with high-strength, fine-grain structural steel StE47 have been installed and operated by BASF for nearly 15 years. Let’s take a newly built one as an example to discuss a few issues that we think are important in NDT. The spherical tank was built between March and September 1980 and has a capacity of 2,100 m³ to 3,600 ft². The material used is TTStE47 steel in accordance with VdTUV Material Specification 357. It is the surface support type (Figure 1), the use of cold forming ball valve. Sphere from the upper and lower polar band and the middle band. Under the pole with seven