T/ZZXJX 223-2022 Code for inspection and maintenance of urban drainage pipelines
T/ZZXJX 223-2022 Code for inspection and maintenance of urban drainage pipelines
Basic Information
Scope
Main technical content: 1 Scope 2 Normative reference documents 3 Terms and definitions 4 Basic provisions 5 TV inspection 5.1 General provisions 5.2 Technical requirements for TV inspection instruments 5.3 Inspection methods 5.4 Image interpretation 6 Sonic inspection 6.1 General provisions 6.2 Technical requirements for sonic inspection instruments 6.3 Inspection methods 6.4 Profile interpretation and measurement 7 Pipe endoscope inspection 7.1 General provisions 7.2 Technical requirements for pipe endoscope inspection instruments 7.3 Inspection methods 8 Ground-penetrating radar inspection 8.1 General provisions 8.2 Technical requirements for inspection instruments 8.3 Inspection methods 8.4 Image interpretation 9 Traditional method inspection 9.1 General provisions 9.2 Visual inspection 9.3 Simple tool inspection 9.4 Diving inspection 10 Inspection of manholes and storm drains 11 Comprehensive assessment of pipeline conditions 11.1 General provisions 11.2 Project naming rules, codes, and grades 11.3 Evaluation of the structural condition of pipelines 11.4 Evaluation of the functional condition of pipelines 11.5 Evaluation of the surrounding environment of pipelines 11.6 Output data