城市燃气庭院钢制管道检测评价

Inspection and Analysis of City Courtyard Gas Pipeline

城市庭院燃气管道的安全关系到千家万户的生命财产安全,随着服役年限的增长,泄漏引发的安全事故时有发生。针对其走向复杂、可能材质多样、长度较短及存在多处绝缘等检测评价难点,本文从宏观检查、腐蚀环境检测、腐蚀防护系统检测、开挖直接检测等多方面介绍了检测内容及方法,特别对复杂庭院管道定位、防腐层破损检测和地极选择进行了详细介绍,并利用该方法对西北某城市庭院钢制管道进行了检验,检验出防腐层破损点5280处,发现73处严重腐蚀点。

The safety of city courtyard gas pipeline is related to life and assert safety of around people.With the age of the pipelines growing,accidents caused by gas leakage often happen.According to inspection difficulties,such as complex direction,material variety,short distance and insulation,this thesis gives the inspection content and ways about visual inspection,environment corrosion inspection,corrosion prevention system inspection and digging direct inspection.The method was used to inspect the steel pipes in the courtyard of a city in Northwest China.5280 damaged points of the anticorrosive coating were found and 73 severely corroded points were found.