18 Welding of Ductile Iron Pipes 21.10 Handling and Disposal This Chapter Is Being Prepared
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E-Book – Ductile iron pipe systems I 08.2018 E-Book – Ductile iron pipe systems II 08.2018 E-Book – Ductile iron pipe systems III Ductile iron pipe systems Pipes, fittings and valves of ductile iron pipe systems 08.2018 E-Book – Ductile iron pipe systems IV 08.2018 E-Book – Ductile iron pipe systems V Foreword The current edition of the Cast Iron chapter is relevant for the references to Pipes Manual has been updated and standards and regulations quoted as at is ready for you to download as an this date. E-Book in pdf format. By going to the European Association for Ductile Iron Each chapter is a unit on its own, Pipe Systems · EADIPS®/Fachgemein- comparable to a folder on a computer. schaft Guss-Rohrsysteme (FGR®) e. V. This means that each chapter can be website at www.eadips.org you can amended, updated or added to by the download the entire book or just indi- publisher independently of the other vidual chapters of it. This offers the chapters. 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Griesheim, October 2015 08.2018 E-Book – Ductile iron pipe systems VI Contents 3.5 Application of coatings and linings 3.6 Marking 3.7 Testing 3.8 References Foreword 4 Quality management 1 Introduction This chapter is being prepared. 1.1 General 1.2 Cast iron as material for pipes NEW 1.3 Joint technology 1.4 Modern ductile iron pipe techniques 5 Design of pipes 1.5 Sustainability 5.1 Stresses in pressure pipelines 1.6 Summary 5.2 Calculating the wall thickness of pipes 1.7 References with non-restrained flexible push-in joints 5.3 Development of minimum pipe wall thicknesses 2 Ductile cast iron as a material 5.4 Comparison of wall thickness classes (K-classes) 2.1 General and pressure classes (C-classes) 2.2 Structure for non-restrained flexible pipes 2.3 Technological properties 5.5 The effect of longitudinal bending strength 2.4 References and ring stiffness on the calculation of pipe wall thickness dimensions 3 Production of pipes, fittings and valves 5.6 Ductile cast iron pipes with restrained flexible joints 3.1 Melting the iron 5.7 References 3.2 Magnesium treatment 3.3 Casting process 6 Design and marking of fittings 3.4 Post-treatment This chapter is being prepared. 08.2018 E-Book – Ductile iron pipe systems VII 7 Valves 10 Mechanical joints – wide-tolerance couplings 7.1 Valves in spheroidal graphite cast iron and flange adaptors 7.2 Corrosion protection of valves in spheroidal 10.1 General graphite cast iron 10.2 Construction and operation 7.3 Principles of hydraulics and the design of valves 10.3 Wide-tolerance couplings 7.4 Isolation valves 10.4 Wide-tolerance flange adaptors 7.5 Tapping valves 10.5 Preloading of gasket 7.6 Control valves 10.6 Ranges of pipe outside diameters 7.7 Air valves 10.7 Allowable angular deflection 7.8 Hydrants 10.8 Restraint 10.9 References 8 Push-in joints 8.1 General 11 Safeguarding with concrete thrust blocks 8.2 Types of joint This chapter is being prepared. 8.3 Fields of use 8.4 References 12 Durability This chapter is being prepared. 9 Restrained socket joints 9.1 General 13 Gaskets 9.2 Types of joint 13.1 General 9.3 Bases for the design and dimensioning 13.2 Types of gaskets of restrained socket joints 13.3 Properties 9.4 Types of restrained joint 13.4 Gaskets for drinking water pipelines 9.5 Type tests 13.5 Gaskets for sewage drains and pipelines 9.6 Determining the forces which occur 13.6 References and the lengths of pipe to be restrained 9.7 Examples of installed pipelines 9.8 Notation in equations 9.9 References 08.2018 E-Book – Ductile iron pipe systems VIII 14 Coatings 19 Transport, storage and installation 14.1 General 19.1 General 14.2 Works-applied coatings on pipes 19.2 Pipeline installation regulations 14.3 Coating of fittings and valves 19.3 Transport of ductile cast iron pipes, fittings and valves 14.4 On-site measures 19.4 Installation of ductile iron pipe systems 14.5 References 19.5 Installation 19.6 Pipe trenches 15 Linings 19.7 Special pipeline installation cases 15.1 General 19.8 References 15.2 Linings of pipes, fittings and valves for drinking water pipelines 20 Pressure tests 15.3 Linings in pipelines for raw water This chapter is being prepared. 15.4 Linings of pipes, fittings and valves for pipelines for wastewater and sewage 21 Commissioning of ductile iron pipelines 15.5 Linings in pipelines for non-drinking and for drinking water cooling water 21.1 Preliminary comment 15.6 References 21.2 Preventive measures 21.3 Cleaning measures 16 Structural design 22.4 Flushing with water This chapter is being prepared. 21.5 Flushing with water and air 21.6 Impulse-flushing method 17 Hydraulic design 21.7 Other cleaning techniques This chapter is being prepared. 21.8 Disinfection process 21.9 Disinfection agent 18 Welding of ductile iron pipes 21.10 Handling and disposal This chapter is being prepared. 21.11 Inspection and release of the pipeline 21.12 Measures for existing cast iron pipelines 08.2018 E-Book – Ductile iron pipe systems IX 21.13 Summary 21.14 Closing comments, additional information and prospects 21.15 References 22 Use of ductile iron pipes for trenchless installation techniques 22.1 General 22.2 Coatings of ductile iron pipes for trenchless pipe installation 22.3 Joint technology 22.4 Trenchless installation techniques 22.5 References 23 Some new main applications for ductile iron pipes This chapter is being prepared. 24 Standards, directives and technical rules 24.1 General 24.2 The Standards Database 25 Index 26 Imprint 08.2018 E-Book – Ductile iron pipe systems X 08.2018 E-Book – Ductile iron pipe systems Chapter 1: Introduction 1/1 1 Introduction 1.1 General 1.2 Cast iron as material for pipes 1.3 Joint technology 1.4 Modern ductile iron pipe techniques 1.5 Sustainability 1.6 Summary 1.7 References 05.2014 E-Book – Ductile iron pipe systems Chapter 1: Introduction 1/2 1 Introduction stresses. Firstly there is the internal pressure necessary to convey the medium being transported. And secondly there are Around 150 years ago, urban infrastructures for supplying the townsfolk the external loads exerted on the pipe- with drinking water were constructed almost exclusively with cast iron pipes. lines above all by the soil itself and by A major part of the supply network in operation today still dates back to that traffic in the form of ground motion and time. Since then the ductile iron pipe system has made enormous progress: the vibrations. In addition to these internal manufacturing processes have adapted to the increasing requirements regarding and external loads, which usually occur dimensional accuracy, weight reduction and efficiency. Pipe joint technology has in combination and may be both static become both more secure and simpler. The use of spheroidal graphite cast iron and dynamic in nature, there are also means that higher mechanical loads are possible while simultaneously reducing chemical stresses from the surrounding weight. Protection against chemical attack both inside and outside has been soil and in some cases from the medium perfected and, with pipes, fittings, valves and accessories, a complete system has being carried; sometimes the influence of been produced for all tasks. Nowadays the system of ductile iron pipes, fittings, temperature fluctuations has to be taken valves and accessories ensures the problem-free and cost-effective transport of into account as well. predominantly liquid media (water and wastewater). In the main, the costs of transporting water and wastewater are determined by the costs of the pipeline, i.e. by the costs of the pipes, fittings and valves themselves, 1.1 General The pipelines are predominantly laid for their installation and for the operation underground and thus are not able to and maintenance of the piping network. be inspected and monitored on any Essential piping networks serve for the ongoing basis. Therefore they have to If damage occurs to pipelines buried transport of be constructed in a material with high underground, not only is it very difficult ■ water (drinking water, process and resistance levels and a long working to detect and locate this but usually it is industrial water) and life.