Abstract
The stress behavior of defects is the key factor in the safety assessment of pressure steam pipeline containing defects. For achieving carbon peaking and carbon neutrality, high-parameter pressure steam pipelines are widely designed in the recent years. It makes the safety assessment based on defect stresses become significantly important. A combined FEA method of stress calculations was proposed in the present study for calculating film stress and bend stress of defects located in a pressure steam pipeline from a certain power plant. An efficient program code with graphical user interface was designed to automatically generate FEA models of defect part pipelines. It is truly an innovative highlight of the present work attributed to convenient operation and outstanding efficiency. This paper provides an available way to obtain the stress state of defects in the safety assessment of pressure steam pipeline containing defects.
Highlights
Pressure steam pipeline is general equipment in petrochemical and power industry
With the development trend of achieving carbon peaking and carbon neutrality through energy saving, emission reduction, and improvement of energy efficiency ratio in various countries around the world, an amount of high-parameter steam pipeline are widely designed, whose safe operateion is mostly threatened by pipeline defects associated with mechanical damage
This paper introduces a Finite Element Analysis (FEA) process that is conducted to calculate the defect stresses of a boiler pressure steam pipeline from a certain power plant
Summary
Pressure steam pipeline is general equipment in petrochemical and power industry. The failure of its structural integrity may result in costly financial losss, severe environmental harms and catastrophic accidents of many casualties[1]. With the development trend of achieving carbon peaking and carbon neutrality through energy saving, emission reduction, and improvement of energy efficiency ratio in various countries around the world, an amount of high-parameter steam pipeline are widely designed, whose safe operateion is mostly threatened by pipeline defects associated with mechanical damage Such high-temperature and high-pressure working environment may more rapidly lead to plastic failure of pipeline defects [2-3]. This paper introduces a Finite Element Analysis (FEA) process that is conducted to calculate the defect stresses of a boiler pressure steam pipeline from a certain power plant. This method combines the overall and partial pipeline modeling, which provides a new way of stress acquisition during the safety assessment of pressure steam pipeline containing defects
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