SIST EN 13480-4:2002
(Main)Metallic industrial piping - Part 4: Fabrication and installation
Metallic industrial piping - Part 4: Fabrication and installation
This Part of this European standard EN 13480 describes the requirements for fabrication and installation of piping systems, including supports, designed in accordance with EN 13480-3.
Metallische industrielle Rohrleitungen - Teil 4: Fertigung und Verlegung
Dieser Teil der Europäischen Norm EN 13480 beschreibt die Anforderungen an die Fertigung und Verlegung einschließlich der Halterungen von Rohrleitungssystemen, die nach EN 13480-3 konstruiert sind.
Tuyauteries industrielles métalliques - Partie 4: Fabrication et installation
La présente partie de EN 13480 spécifie les exigences relatives a la fabrication et a l'installation des réseaux de tuyauteries, supports inclus, conçus conformément a prEN 13480-3.
Kovinski industrijski cevovodi - 4. del: Proizvodnja in vgradnja
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kovinski industrijski cevovodi - 4. del: Proizvodnja in vgradnjaMetallische industrielle Rohrleitungen - Teil 4: Fertigung und VerlegungTuyauteries industrielles métalliques - Partie 4: Fabrication et installationMetallic industrial piping - Part 4: Fabrication and installation77.140.75Jeklene cevi in cevni profili za posebne nameneSteel pipes and tubes for specific useICS:Ta slovenski standard je istoveten z:EN 13480-4:2002SIST EN 13480-4:2002en01-november-2002SIST EN 13480-4:2002SLOVENSKI
STANDARD
SIST EN 13480-4:2002
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13480-4May 2002ICS 23.040.01English versionMetallic industrial piping - Part 4: Fabrication and installationTuyauteries industrielles métalliques - Partie 4: Fabricationet installationMetallische industrielle Rohrleitungen - Teil 4: Fertigungund VerlegungThis European Standard was approved by CEN on 23 May 2002.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2002 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13480-4:2002 ESIST EN 13480-4:2002
EN 13480-4:2002 (E)Issue 1 (2002-05)2ContentsForeword.51Scope.62Normative references.63Terms and definitions.74Symbols.75General.75.1Requirements on the manufacturer.75.2Requirements on fabricators and installers of piping and supports.75.3Requirements for fabrication and installation.85.4Classification of piping.85.5Material grouping.85.6Tolerances.96Cutting and bevelling.96.1General.96.2Transfer of marking for pressure parts.97Bending and other forming.97.1General.97.2Heat treatment after cold forming.127.2.1Flat products.127.2.2Pipes.127.3Heat treatment after hot forming.147.3.1Material groups 1, 2, 3, 4, 5, 6 and 7.147.3.2Material groups 8.1, 8.2 and 8.3.147.3.3Heat treatment after hot forming for material group 10.177.3.4Heat treatment after hot forming for material group 11 and clad materials.177.4Tolerances.177.4.1Out-of-roundness of bends under internal pressure equal to, or greater than, the externalpressure.177.4.2Out-of-roundness of bends under external pressure and vacuum.187.4.3Waves at bends.187.4.4Start-up bulge of induction bends.197.5Surface finish.208Installation of piping.208.1Fixing and alignment.208.2Field run piping.218.3Flanged or similar mechanical connections.22SIST EN 13480-4:2002
EN 13480-4:2002 (E)Issue 1 (2002-05)38.3.1Flange connections.228.3.2Threaded connections.238.3.3Couplings and compression fittings.238.4Protection of ends of piping components.239Welding.239.1Welding personnel.239.2Welding procedure specifications.239.3Welding processes.249.3.1Verification of suitability.249.3.2Application.249.4Filler metals and auxiliary materials.249.5Climatic conditions.259.6Cleaning before and after welding.259.7Weld joint preparation.259.8Edge protection.259.9Assembly for welding.259.10Earthing.269.11Execution of welded joints.269.11.1Preheating.269.11.2Striking marks.269.11.3Fillet-weld connections.269.11.4Dissimilar joints.279.12Backing rings.279.13Attachments.279.13.1General.279.13.2Temporary attachments.279.13.3Permanent attachments.279.14Post-weld heat treatment.289.14.1General.289.14.2Equipment.319.14.3Temperature measurements.319.14.4Controlling thickness.319.14.5Rate of heating.339.14.6Local heat treatment.339.14.7Insulation.349.15Weld identification.3410Adjustment and repair.3410.1General.3410.2Adjustment.3410.2.1General.34SIST EN 13480-4:2002
EN 13480-4:2002 (E)Issue 1 (2002-05)410.2.2Adjustments by means of heat.3510.2.3Adjustment by welding.3510.2.4Adjustment by local forging.3510.3Weld repair.3511Marking and documentation.3511.1Marking of spools and components for installation.3511.2Marking of installed piping.3611.2.1General.3611.2.2Marking.3611.3Final documentation package.3612Additional requirements.3712.1Cleaning.3712.2Temporary preservation.3712.3External corrosion protection.3712.4Thermal and acoustic insulation.3712.5Connections for static electricity.37Annex A (informative) Contamination and surface quality of stainless steel.39Annex B (normative) Dimensional tolerances for fabricated spools.42Annex ZA (informative)
Clauses of this European Standard addressing essential safety requirementsor other provisions of EU directives.44Bibliography.45SIST EN 13480-4:2002
EN 13480-4:2002 (E)Issue 1 (2002-05)5ForewordThis document (EN 13480-4:2002) has been prepared by Technical Committee CEN/TC 267 "Industrial piping andpipelines", the secretariat of which is held by AFNOR.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by November 2002, and conflicting national standards shall be withdrawn at the latestby November 2002.This document has been prepared under a mandate given to CEN by the European Commission and the EuropeanFree Trade Association, and supports essential requirements of EU Directive(s).For relationship with EU Directive(s), see informative annex ZA, which is an integral part of this document.In this standard the Annex A is informative and the Annex B is normative.This European Standard EN 13480 for metallic industrial piping consists of seven interdependent and not dissociableparts which are : Part 1 : General. Part 2 : Materials. Part 3 : Design. Part 4 : Fabrication and installation. Part 5 : Inspection and testing. Part 6 : Additional requirements for buried piping.CEN/TR 13480-7, Guidance on the use of conformity assessment procedures.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain,Sweden, Switzerland and the United Kingdom.SIST EN 13480-4:2002
EN 13480-4:2002 (E)Issue 1 (2002-05)61 ScopeThis Part of this European Standard specifies the requirements for fabrication and installation of piping systems,including supports, designed in accordance with EN 13480-3.2 Normative referencesThis European Standard incorporates, by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references, the latest edition of thepublication referred to applies (including amendments).EN 287-1: 1992, Approval testing of welders – Fusion welding – Part 1: Steels.EN 288-2, Specification and approval of welding procedures for metallic materials – Part 2 : Welding procedurespecification for arc welding.EN 288-3, Specification and approval of welding procedures for metallic materials – Part 3 : Welding proceduretests for the arc welding of steels.EN 288-5, Specification and approval of welding procedures for metallic materials – Part 5 : Approval by usingapproved welding consumables for arc welding.EN 288-6, Specification and approval of welding procedures for metallic materials – Part 6 : Approval related toprevious experience.EN 288-7, Specification and approval of welding procedures for metallic materials – Part 7 : Approval by a standardwelding procedure for arc welding.EN 288-8, Specification and approval of welding procedures for metallic materials – Part 8 : Approval by a pre-production welding test.EN 1418, Welding personnel – Approval testing of welding operators for fusion welding and resistance weld settersfor fully mechanized and automatic welding of metallic materialsEN 10088-1, Stainless steels – Part 1 : List of stainless steels.EN 10204:1991, Metallic materials – Types of inspection documents.EN 13480-1, Metallic industrial piping – Part 1: General.EN 13480-3, Metallic industrial piping – Part 3: Design and calculation.EN 13480-5:2002, Metallic industrial piping – Part 5: Inspection and testing.EN ISO 13920:1996, Welding – General tolerances for welded constructions – Dimensions for lengths and angles -Shape and position (ISO 13920:1996).SIST EN 13480-4:2002
EN 13480-4:2002 (E)Issue 1 (2002-05)7CR ISO 15608:2000, Welding – Guidelines for a metallic material grouping system (ISO/TR 15608:2000).EN 24063, Welding, brazing, soldering and braze welding of metals - Nomenclature of processes and referencenumbers for symbolic representation on drawings (ISO 4063:1990).EN 25817, Arc-welded joints in steel - Guidance on quality levels for imperfections (ISO 5817:1992).3 Terms and definitionsFor the purposes of this Part of this European Standard, the terms and definitions given in EN 13480-1 togetherwith the following apply.3.1field run pipingpiping installed without preplanning by drawings of the piping routing and the support pointsNOTETypical dimensions are DN 50 or smaller.3.2spool (with or without overlength)prefabricated assembly of components which forms part of a piping system3.3cold forming3.3.1cold forming for ferritic steelsforming at temperatures 20 °C to 30 °C below the maximum permissible temperature for post-weld heat treatmentin accordance with Table 9.14.1-13.3.2cold forming for austenitic steelsforming at temperatures below 300 °C3.4hot formingfor ferritic steels, forming at temperatures at or above the maximum permissible temperature for post-weld heattreatment in accordance with Table 9.14.1-14 SymbolsFor the purposes of this Part of this European Standard, the symbols given in EN 13480-1 apply. Additionalsymbols are defined in appropriate clauses of this Part.5 General5.1 Requirements on the manufacturerThe manufacturer shall be responsible for the fabrication and the installation, even if this work will be sub-contracted.5.2 Requirements on fabricators and installers of piping and supports5.2.1The fabricators and/or installers shall ensure the correct transport, handling, storage, fabrication andinstallation of all piping components including supports.SIST EN 13480-4:2002
EN 13480-4:2002 (E)Issue 1 (2002-05)85.2.2The fabricators and installers shall have access to facilities which enable them to handle the pipingcomponents including supports correctly and to carry out the required tests.5.2.3The fabricators and/or installers shall employ their own responsible supervisors and competent personnel.If sub-contractors are employed, the fabricator and/or installer shall remain responsible for their competence andthe compliance with this European Standard.5.2.4All stages of fabrication and installation shall be supervised in such a way as to maintain the designintegrity of the finished system.5.2.5Co-ordination between those responsible for design and those responsible for fabrication and/orinstallation shall be maintained at all times, to ensure that fabrication and installation is carried out in accordancewith the design specification.5.3 Requirements for fabrication and installation5.3.1Prior to any operation, a check shall be made to ensure that the spools and components supplied are inaccordance with the relevant documents (specifications, drawings, certificates etc.).5.3.2Prefabricated spools and components shall be protected during handling, transport, and storage.5.3.3When joining spools or components, they shall not be strained nor deformed other than as may berequired by the design. Designer's installation instructions, if any, shall be observed.NOTE5.3.3 is deemed to be fulfilled, when the quality characteristics of the material are not impaired by cold or hotforming, e.g. by cutting, grinding, straightening or bending, of the pipes and when the different pipes have been joined such thatstresses and deformations which can impair the safety of the piping are excluded.5.3.4Any temporary supports or restraints used as an aid during transport, installation or testing shall beremoved prior to commissioning.5.3.5Appropriate measures shall be taken to avoid corrosion-inducing contamination of stainless steel and non-ferrous materials. If contamination occurs, it shall be properly removed as soon as practicable, notwithstanding anyfinal treatment.NOTERecommended methods for the prevention and removal of contamination on stainless steel are given in Annex A.5.3.6Piping for fluids which are likely to cause condensation shall be installed with adequate slopes and traps.5.4 Classification of pipingThe piping systems shall be classified into different classes depending on the fluid carried, diameter and pressure.These are given in EN 13480-1.5.5 Material groupingMaterial grouping shall comply with CR ISO 15608.SIST EN 13480-4:2002
EN 13480-4:2002 (E)Issue 1 (2002-05)95.6 TolerancesTolerances shall comply with EN ISO 13920:1996, class C and class G except where other classes are specified inthis European Standard.Angular tolerances for fabricated pipework shall be determined by the dimensional tolerance for the terminal pointsof the finished part.Alternative tolerances for fabrication and installation of pipework shall be determined and in all cases these shall beidentified in the specification. Dimensional tolerances for fabricated spools shall comply with Annex B.6 Cutting and bevelling6.1 GeneralCutting and bevelling by machining shall be permitted for all materials.Flame cutting shall be permitted for material groups 1, 2, 3, 4 and 5 only with preheating as for welding.NOTEFlame cutting for material groups 1 and 2 can be used for bevelling, if the required bevel forms and tolerances canbe achieved and the heat affected zone has no detrimental effects on the quality of the weld.For material groups 3, 4 and 5, the heat affected zone shall be removed by machining or grinding.Plasma cutting shall be permitted for all material groups given in this European Standard. Plasma cutting shall bepreceded by preheating, as specified for welding in 9.11.1.Other cutting and bevelling processes shall be permitted, provided their suitability is demonstrated.6.2 Transfer of marking for pressure partsFor pressure parts, identification of materials shall remain possible, either by retaining or by transferring the markstipulated by the product standard, or by using a unique code kept in the records of the piping fabricator.Stamping shall not introduce a notching effect, therefore stamping with round edges is recommended.If any method of marking other than hard-stamping or engraving (vibrograph) is used, the fabricator shall ensurethat confusion between different materials is not possible, e.g. by separate handling (time and/or place), stampedbands.7 Bending and other forming7.1 General7.1.1Fabricators of formed pressure parts shall have adequate equipment for the forming procedures and thesubsequent heat treatment.NOTE 1Forming of expansion bellows is specified in EN 13445-3:2002, clause 14.SIST EN 13480-4:2002
EN 13480-4:2002 (E)Issue 1 (2002-05)10Pipes with internal coating such as glass, rubber or plastics shall not be formed unless it has been demonstratedthat the forming process is not detrimental to the lining.NOTE 2There are two kinds of forming within the scope of this standard: cold forming and hot forming.The thickness after bending or forming shall be not less than that required by the design.NOTE 3Longitudinal welds should be located at the neutral zone. The range of the neutral zone after bending is given inFigure 7.1.1-1.Key1 extrados2 intradosa optimal range for the longitudinal weld seam at bendingb weld seamFigure 7.1.1-1 — Optimal range for the longitudinal weld seam at bending7.1.2The forming and post-forming heat treatment of thermomechanical steels shall be given individualconsideration. Account shall be taken of the recommendations of the steelmakers.NOTE
Pipes whose properties have been generated by thermomechanical means such as controlled rolling can be formed byhot or cold methods. Such materials may be substantially changed by the forming process and require particular considerationto ensure that the specified properties are recovered after forming.7.1.3The following equations shall be used for the calculation of the percentage deformation for cold formedcylinders and cone products made by rolling (see Figure 7.1.3-1) :a) For cylinders and cones rolled from flat materials (see Figures 7.1.3-1a) and 7.1.3-1c)):mfordd50reV (7.1.3-1)SIST EN 13480-4:2002
EN 13480-4:2002 (E)Issue 1 (2002-05)11b) For cylinders and cones rolled from intermediate product (see Figures 7.1.3-1b) and 7.1.3-1c)) :mimfmfintd150rrreV(7.1.3-2)where ordeis the ordered thickness; inteis the thickness of the intermediate product; mfris the average radius of the finished product; miris the average radius of the intermediate product; Vdis the deformation as a percentage.NOTEIf no intermediate quality heat treatment is applied between individual forming steps, the deformation is the totalamount of
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