应用断裂力学理论检验评定修复蒸煮锅

The Application of Fracture Mechanics to Examining, Evaluating and Repairing Digesters

当前，国内对压力容器的安全管理，存在两种既对立、又并行的规范。一种是普遍、传统、运作方便的安全法规；另一种是正处于建立之中的、以断裂力学理论为基础的、工程界称之为符合安全使用标准的评定规范。本文介绍了１９８７年青州造纸厂四台带缺陷蒸煮锅在两种规范下的两种不同的安全结论。文中详列了＃１蒸煮锅按后一种评定规范所进行的检验、评定、修复过程。该研究成果，对存在相当缺陷的蒸煮锅作出了可靠的安全分析，得到安检部门的认可。为企业继续安全使用这四台蒸煮锅提供了依据，从而减少了大量停机时间，节约了大量资金；

For the safety management of pressurized vessels,there has been existed two kinds of standards which are both simultaneous and antagonistic.One kind of the standards is the safety regulations which is common,traditional and easy for operation.The other kind is under establishment,on the basis of the theory of fracture mechanics and is named by the engineering circles the evaluation specifications corresponding with safety application standard.This paper introduces the two different safety conclusions of the four defective digesters in Qing Zhou Paper Mill in 1987 under two standards.The article specifically listed the process of examining,evaluating and renovating of #1 digester according to the evaluation specifications by the second kind.The study result makes reliable safety analysis for the considerably defective digester and has been approved by the safety inspection department.This achievement supplies basis for continuously and safely application of these four digesters,thus largely reduces the time of shutdown,consequently saves large amount of funds.