This standard specifies technical requirements for geometry inspection and metal-loss inspection of steel pipeline as well as inspection period, application scope of detector, inspection preparation, inspection procedure control, inspection report contents and acceptance methods.
This standard is applicable to overland steel pipeline in-line inspection with transmission medium of gas and liquid; seabed steel pipeline in-line inspection with transmission medium of gas and liquid may be carried out by reference to this standard.
1 Scope 1 2 Normative References 1 3 Terms and Definitions 1 4 General Requirements of Inspected Pipeline 3 5 In-line Inspection Period and Equipment Selection 4 6 Inspection and Construction Preparation 5 7 Pigging before Inspection 6 8 Commissioning of Geometric Deformation Detector 7 9 Commissioning of Dnmmy Tool 7 10 Commissioning of Metal-loss Detector 7 11 Inspection Data Preprocessing 8 12 Inspection Report 8 13 Verification of Inspection Results 11 14 Occupational Health, Safety and Environment 12 15 Delivery Information 12 Appendix A (Informative) Arrangement Requirements for Barrier Strip of Pipeline Three-way 14 Appendix B (Informative) Selection of In-line Inspection Equipment 15 Appendix C (Normative) List of Pipeline Survey 17 Appendix D (Normative) Operation Procedure for Launching and Receiving Detectors 23 Appendix E (Informative) Type and Definition of Metal-loss Features 25
