GERMAN ATV-DVWK RULES AND STANDARDS
Advisory Leaflet ATV-DVWK-M 275E Pipelines for the Area of Technical Installations of Wastewater Treatment Plants May 2001
-ABSTRACT-
English version in preparation
Publisher/marketing: GFA the publishing company of the German Association for Water, Wastewater and Waste, Theodor-Heuss-Allee 17 • D-53773 Hennef • Postfach 1165 • D-53758 Hennef Tel. ++49-22 42 / 8 72-120, • Fax:++49 22 42 / 8 72-100 E-Mail:
[email protected], • Internet: www.gfa-verlag.de
ATV-DVWK-M 275E
Foreword Pipelines form a crucial point in the technical installations of wastewater treatment plants. They serve for the conveyance of the media to be treated and utilised (liquids without and with a share of solid matter, gasses). Pipelines are to be found in all areas of the technical installations of wastewater treatment plants. Pipelines can be subjected to numerous stresses through forces (static and dynamic), corrosion (caused through the medium and/or environment), abrasion, erosion, temperature (heat, cold) etc. The selection of the pipe material and the dimensioning of the pipeline with regard to diameter and wall thickness require a high degree of specialist knowledge, above all with regard to the type of loading, the material characteristic values, the possibilities for processing and, not the least, with the comprehensive standard specifications and regulations associated with this area. With this Advisory Leaflet an aid is to be provided to planners, to those requesting invitations to tender and to those responsible for decision making, for the achievement of professional and economical solutions. In many cases the proven remedy can be recommended, in other cases attention has to be drawn to technical documents and regulations in order to develop, from the respective requirements, professional standards for invitation to tender and for the implementation in the plant construction.
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May 2001 (English version in preparation)
ATV-DVWK-M 275E
Contents Foreword ............................................................................................................................................... 2 Authors ................................................................................................................................................ 1
Area of Application ............................................................................................................... 4
2
Abbreviations used.........................................................................................
3
Loading of the pipelines through the media ................................................
4
Selection of materials .....................................................................................
4.1 4.1.1 4.1.2 4.2 4.2.1 4.2.2 4.2.3
Pipelines made from unalloyed or low alloyed steel ......................................... General.............................................................................................................. Processing of pipelines made from unalloyed or low alloyed steel ................. Pipelines made from stainless steel.................................................................. General.............................................................................................................. Corrosion resistance of pipelines made from stainless steel............................ Processing of pipelines made from stainless steel ...........................................
4.3 4.4 4.4.1 4.4.2
Pipelines made from non-ferrous metals .......................................................... Pipelines made from plastic .............................................................................. General.............................................................................................................. Processing of pipelines made from plastic........................................................
5
Dimensioning of pipelines .............................................................................
5.1 5.2 5.3 5.3.1 5.3.2
Flow rates and minimum nominal widths .......................................................... Pressure losses with delivery of viscous liquids ............................................... Selection of pipelines ........................................................................................ Pipelines made from steel and stainless steel .................................................. Pipelines made from plastic ..............................................................................
6
Laying of pipelines..........................................................................................
6.1 6.2 6.2.1. 6.2.1.1 6.2.1.2 6.2.2 6.2.3 6.2.3.1 6.2.3.2 6.2.3.3 6.2.3.4 6.2.3.5 6.3 6.4 6.5 6.6
Elongation and settling compensation .............................................................. Connection of pipelines..................................................................................... Permanent pipeline connections made from metallic materials........................ Welding and soldering....................................................................................... Press fittings...................................................................................................... Permanent pipeline connections made from plastic ......................................... Detachable connections.................................................................................... Flanged joints for steel pipelines....................................................................... Flanged joints for plastic pipelines .................................................................... Pipe couplings................................................................................................... Nuts, bolts, washers.......................................................................................... Seals ................................................................................................................. Fittings............................................................................................................... Pipe supports and fixtures................................................................................. Emptying, ventilation and cleaning ................................................................... Wall leadthroughs .............................................................................................
English version in preparation
May 2001 (English version in preparation)
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ATV-DVWK-M 275E 6.7
Lubrication pipelines..........................................................................................
7
Others ...............................................................................................................
7.1 7.1.1 7.1.2 7.1.3 7.1.4 7.1.5 7.1.6 7.1.7 7.2 7.3 7.4
Insulation ........................................................................................................... Design of heat protection insulation .................................................................. Design of cold protection insulation .................................................................. Insulation for the prevention of condensation water ......................................... Frost protection insulation ................................................................................. Insulation for pipes made from stainless steel .................................................. Thickness of insulation ...................................................................................... Insulating cladding............................................................................................. Equipotential bonding........................................................................................ Measurement .................................................................................................... Identification ......................................................................................................
7.5
Tests..................................................................................................................
English version in preparation
Appendix ........................................................................................................................... Appendix A: Tables........................................................................................................... Appendix B: References to Standards ............................................................................
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Area of Application
In this Advisory Leaflet information is given for the planning, execution and testing of pipelines for the area of technical installations in wastewater treatment plants. With this, the particular requirements of wastewater treatment plant-specific media on metallic and plastic pipes are taken into account. This Advisory Leaflet can also be applied analogously for pipelines in wastewater treatment facilities and pumping stations. There are numerous standard specifications and regulations on the dimensions, materials, requirements and testing, planning and design of pipelines. With this Advisory Leaflet the handling of these comprehensive standard specifications and directives are to be made easier through limitation to the wastewater treatment plantspecific cases of application. In addition, experiences are to be passed on as to which materials, designs etc. have proved themselves for the individual cases (e.g. medium, temperature, pressure) in wastewater treatment plants.
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May 2001 (English version in preparation)
The following are not dealt with in this Advisory Leaflet: -
wastewater inflow sewers and wastewater outlet sewers, sewers within the wastewater treatment plant, pipelines constructed from mineral materials (e.g. concrete, cement fibre, vitrified clay etc.), domestic pipelines, protective pipes for cables.
The following statements provide solutions as to how technical requirements can be met. They do not exclude other, at least equally secure solutions such as, for example, are to be found in the technical rules of other member countries of the European Union or in other treaty states of the Agreement on the European Economic Area.
