Detail of DL 5190.5-2012

Introduction of DL 5190.5-2012

1 General Provisions 1.0.1 This Part was revised with a view to strengthening the technical management of the pipe engineering construction and further improving the engineering quality. 1.0.2 This Part is applicable to the erection and construction of process pipes of the new-built, extended or reconstructed 1,000MW or below thermal power generation, gas turbine generation, biomass electric power generation and garbage power generation stations and the conventional islands of nuclear power. 1.0.3 This Part is not applicable to the process pipes made of the following materials: 1 Cast iron pipes and reinforced concrete pipes; 2 Nonmetallic pipe (plastics and glass reinforced plastic, etc.); 3 Non-ferrous metal pipe (titanium and copper, etc.); 4 Lined pipe; 5 Pipes of composite materials; 6 Pipes of other special materials. 1.0.4 In addition to complying with the technical requirements stated in this Part, the special erection and construction of various pipes also shall meet those specified in the relevant professional parts in the national standards and the "Technical Specification for Thermal Power Erection and Construction".

Contents of DL 5190.5-2012

1 General Provisions 2 Terms 3 Basic Requirements 4 Inspection of Pipes, Pipe Fittings, Pipe Accessories and Valves 4.1 General Requirements 4.2 Inspection of Pipes 4.3 Inspection of Pipe Fittings 4.4 Inspection of Pipe Accessories 4.5 Factory Prefabrication of High Pressure Pipes 4.6 Inspection of Pipes after Factory Prefabrication 4.7 Inspection of Valves 5 Pipe Installation 5.1 General Requirements 5.2 Installation of High Pressure Pipes 5.3 Installation of Medium and Low Pressure Pipes 5.4 Installation of Drain and Discharge Pipes 5.5 Installation of Pipes with Φ76 and Below 5.6 Installation of Valves and Flanges 5.7 Installation of Supports and Hangers 6 Testing and Cleaning of Piping System 6.1 General Requirements 6.2 Leak Test of Piping System 6.3 Cleaning of Piping System 7 Project Documents Provided before Quality Acceptance Appendix A Requirement of Pipe Painting Color Appendix B Common Steels Data of Power Station Pipes Appendix C Material Selection of Flange Gaskets Appendix D Selection of Valve Seal Packing Appendix E Type and Gap of Common Pipe Groove Appendix F Installation Requirements of Oxygen and Acetylene Pipes Appendix G Calculation of Pipe Head Thickness Explanation of Wording in this Specification List of Quoted Standards