Gas infrastructure - Welding steel pipework - Functional requirements

This document amends prEN 12732 Clause 4.5 "Testing companies and personnel".

Gasinfrastruktur - Schweißen an Rohrleitungen aus Stahl - Funktionale Anforderungen

Diese Europäische Norm enthält Anforderungen an die Herstellung und Prüfung von Schweißnähten bei der Errichtung und Instandsetzung von landverlegten Stahlrohrleitungen und Anlagen der öffentlichen Gasinfrastruktur einschließlich in Betrieb befindlichen Leitungen für alle Druckbereiche, die für den Transport von aufbereitetem, nicht giftigem und nicht korrosivem Erdgas nach EN ISO 13686 bestimmt sind und für den Transport von nicht-konventionellen Gasen, wie eingespeistes Biomethan, bei denen:
- die Leitungsbauteile aus nicht legiertem oder niedrig legiertem Kohlenstoffstahl bestehen;
- alle Leitungen und Anlagen, die sich auf Gewerbe- oder Werksgelände befinden, ausschließlich der Versorgung solcher Grundstücke dienen und kein wesentlicher Bestandteil der Anlagen für Betriebsabläufe auf diesem Gelände sind;
- es sich nicht um Leitungen innerhalb von Hausinstallationen handelt, die EN 1775 unterliegen;
- die Auslegungstemperatur zwischen −40 °C bis einschließlich 120 °C liegt.
Für landverlegte Stahlrohrleitungen und Anlagen der öffentlichen Gasinfrastruktur einschließlich in Betrieb befindlichen Leitungen für alle Druckbereiche, die für den Transport von aufbereitetem, nicht giftigem und nicht korrosivem Erdgas nach EN ISO 13686 und für den Transport von nicht-konventionellen Gasen nach EN ISO 13686, und für die eine ausführliche technische Bewertung der funktionalen Anforderungen (wie eingespeistes Biomethan) durchgeführt wird, ist sicherzustellen, dass keine weiteren Bestandteile oder Eigenschaften der Gase die Leitungsintegrität beeinflussen können.
Diese Norm ist nicht auf Schweißnähte anwendbar, die vor der Veröffentlichung dieser Europäischen Norm erstellt wurden.
Tabelle 1 ordnet die Anwendungsbereiche in Abhängigkeit vom Betriebsdruck sowie vom eingesetzten Rohrwerkstoff bestimmten Qualitätsanforderungsstufen zu.
Tabelle 1 - Zuordnung von Qualitätsanforderungsstufen
[...]
Zusätzliche Anforderungen dürfen festgelegt werden, wenn z. B.:
- die Beanspruchung der Rohrleitungen und Anlagen,
- die Werkstoffe,
- die Trassenführung,
- die Planung oder die Schweißmethode
als kritisch betrachtet werden.
Diese Europäische Norm enthält allgemeine Grundsätze der Gasinfrastruktur. Anwender dieser Europäischen Norm sollten sich dessen bewusst sein, dass detailliertere nationale Normen bzw. Technische Regeln in den CEN-Mitgliedsländern existieren können.
Diese Europäische Norm soll in Verbindung mit diesen, die oben erwähnten allgemeinen Grundsätze darlegenden, nationalen Normen bzw. Technischen Regeln angewendet werden.
Beim Auftreten von Widersprüchen aufgrund restriktiver Anforderungen in nationalen Gesetzen/Vorschriften als in dieser Norm gefordert, haben nationale Gesetze/Vorschriften Vorrang wie in der CEN/TR 13737 (alle Teile) dargestellt.
ANMERKUNG CEN/TR 13737 (alle Teile) beinhaltet Folgendes:
- Klärung der einschlägigen Rechtsvorschriften/Verordnungen in einem Land;
- falls erforderlich, Anwendung strengerer Vorschriften;
- nationale Kontaktstelle für die neuesten Informationen.

Infrastructures gazières - Soudage des tuyauteries en acier - Prescriptions fonctionnelles

La présente Norme européenne contient des prescriptions pour l’exécution et le contrôle des assemblages soudés pour l’installation et la modification des tuyauteries et canalisations terrestres en acier utilisées dans les infrastructures gazières, y compris les tuyauteries en service, pour toutes les plages de pression pour le transport de gaz naturel non toxique et non corrosif, conformément à l’EN ISO 13686, et pour le transport de gaz non conventionnels tel que le biométhane injecté, lorsque :
—   les éléments de canalisations sont réalisés en acier au carbone non ou faiblement allié ;
—   la canalisation n’est pas située dans des sites commerciaux ou industriels comme partie intégrante du procès industriel réalisé sur ces sites, à l’exception des canalisations et installations servant à alimenter ces derniers ;
-   la tuyauterie n’est pas située à l’intérieur d’installations domestiques conformément à l’EN 1775 ;
-   la température de conception du système est comprise entre – 40 °C et 120 °C inclus.
Les canalisations et tuyauteries en acier terrestres utilisées dans les infrastructures gazières comprennent les canalisations en service, pour toutes les plages de pression pour le transport de gaz naturel non toxique et non corrosif selon la norme EN ISO 13686 et pour le transport de gaz non conventionnels répondant à l'EN ISO 13686, et pour lesquels une évaluation technique détaillée des besoins fonctionnels (tels que le biométhane injecté) est effectuée assurant qu'il n'y a pas d'autres composants ou propriétés des gaz qui peuvent nuire à l'intégrité de la canalisation.
La présente Norme européenne ne s’applique pas aux assemblages soudés existant avant sa publication.
Le Tableau 1 relie les domaines d’application à des catégories d'exigences de qualité en fonction de la pression de service et des matériaux utilisés pour les tubes.
D’autres prescriptions peuvent être spécifiées lorsque, par exemple :
-   la contrainte sur les canalisations et les réseaux ;
-   les matériaux ;
-   l’acheminement des conduites ;
-   la conception ou la technique de soudage ;
sont considérés comme critiques.
La présente Norme européenne spécifie les principes de base communs pour les infrastructures gazières. Il convient que les utilisateurs de la présente norme gardent à l’esprit l’existence éventuelle, dans les pays membres du CEN, de codes de pratique et/ou de normes nationales plus détaillés.
La présente Norme européenne est destinée à s’appliquer conjointement avec ces normes nationales et/ou codes de pratique, qui détaillent les principes de base précités.
En cas de conflits liés à des exigences législatives/réglementaires plus restrictives que les prescriptions de la présente norme, la législation/réglementation nationale doit être prioritaire, comme illustré dans le CEN/TR 13737 (toutes parties).
NOTE   Le CEN/TR 13737 (toutes parties) contient :
-   la clarification de la législation/réglementation pertinente applicable dans un pays ;
-   si appropriée, les exigences nationales plus restrictives ;
-   le contact national pour les dernières informations.

Infrastruktura za plin - Varjenje jeklenih cevovodov - Funkcionalne zahteve (vključno z dopolnilom A1)

Ta evropski standard vsebuje zahteve za izdelavo in preskušanje zvarnih spojev za namestitev in spremembe kopenskih jeklenih cevovodov in cevovodnih sistemov, ki se uporabljajo v infrastrukturi za plin, vključno z obratovalnimi cevovodi, za vse razpone tlakov za prenos obdelanega, nestrupenega in nekorozivnega zemeljskega plina v skladu s standardom EN ISO 13686 ter za prenos nekonvencionalnih plinov, kot je vbrizgani biometan, kjer
– so elementi cevovoda izdelani iz nelegiranega ali malo legiranega ogljikovega jekla;
– cevovod ni nameščen znotraj poslovnih ali industrijskih prostorov kot sestavni del industrijskega postopka v teh prostorih, razen za cevovode in opremo za dostavo plina na ta območja;
– cevovod ni nameščen znotraj gospodinjskih inštalacij v skladu s standardom EN 1775;
– je projektna temperatura sistema med -40 °C do vključno 120 °C. Kopenski jekleni cevovodi in cevovodni sistemi, ki se uporabljajo v infrastrukturi za plin, vključujejo obratovalne cevovode in so namenjeni za vse razpone tlakov za prenos obdelanega, nestrupenega in nekorozivnega zemeljskega plina v skladu s standardom EN ISO 13686 ter za prenos nekonvencionalnih plinov v skladu s standardom EN ISO 13686, pri čemer se zanje izvede podrobno tehnično vrednotenje funkcionalnih zahtev (kot npr. za vbrizgani biometan), ki zagotavlja, da plini nimajo drugih sestavin ali lastnosti, ki lahko vplivajo na neoporečnost cevovoda. Ta standard se ne uporablja za zvare, izdelane pred objavo tega evropskega standarda. Tabela 1 določa področja uporabe kakovostnim kategorijam kot funkcijo delovnega tlaka in materialov, uporabljenih za cevi.
Dodatne zahteve so lahko določene, če je na primer:
– obremenitev cevovodov in cevnih sistemov,
– materialov,
– usmerjanje povezav,
– zasnova ali tehnika varjenja
nujna.
Ta evropski standard določa splošna osnovna načela za infrastrukturo za plin. Uporabniki tega evropskega standarda se morajo zavedati, da lahko v državah članicah CEN obstajajo podrobnejši nacionalni standardi in/ali kodeksi ravnanja. Ta evropski standard je namenjen uporabi v povezavi s temi nacionalnimi standardi in/ali kodeksi ravnanja, ki določajo zgoraj navedena osnovna načela. Kadar so strožje zahteve v nacionalni zakonodaji/predpisih v nasprotju z zahtevami iz tega standarda, ima prednost nacionalna zakonodaja/predpis, kot je navedeno v standardu CEN/TR 13737 (vsi deli). OPOMBA CEN/TR 13737 (vsi deli) vsebuje:
– pojasnitev ustrezne zakonodaje/predpisov, ki veljajo v državi;
– po potrebi strožje nacionalne zahteve;
– nacionalno kontaktno točko za najnovejše informacije.

General Information

Status
Withdrawn
Publication Date
22-Apr-2014
Current Stage
9960 - Withdrawal effective - Withdrawal
Completion Date
17-Nov-2021

RELATIONS

Buy Standard

Standard
EN 12732:2013+A1:2014
English language
72 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day

Standards Content (sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Gasinfrastruktur - Schweißen an Rohrleitungen aus Stahl - Funktionale AnforderungenInfrastructures gazières - Soudage des tuyauteries en acier - Prescriptions fonctionnellesGas infrastructure - Welding steel pipework - Functional requirements91.140.40Sistemi za oskrbo s plinomGas supply systems25.160.40Varjeni spoji in variWelded jointsICS:Ta slovenski standard je istoveten z:EN 12732:2013+A1:2014SIST EN 12732:2013+A1:2014en,fr,de01-junij-2014SIST EN 12732:2013+A1:2014SLOVENSKI

STANDARDSIST EN 12732:20131DGRPHãþD
SIST EN 12732:2013+A1:2014
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12732:2013+A1
April 2014 ICS 25.160.40 Supersedes EN 12732:2013English Version
Gas infrastructure - Welding steel pipework - Functional requirements

Infrastructures gazières - Soudage des tuyauteries en acier - Prescriptions fonctionnelles

Gasinfrastruktur - Schweißen an Rohrleitungen aus Stahl - Funktionale Anforderungen This European Standard was approved by CEN on 14 March 2013 and includes Amendment 1 approved by CEN on 3 February 2014.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC 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 translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,

B-1000 Brussels © 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12732:2013+A1:2014 ESIST EN 12732:2013+A1:2014

EN 12732:2013+A1:2014 (E) 2

Contents Page Foreword ..............................................................................................................................................................6 1 Scope ......................................................................................................................................................7 2 Normative references ............................................................................................................................8 3 Terms and definitions ........................................................................................................................ 11 4 Quality system .................................................................................................................................... 13 4.1 General ................................................................................................................................................. 13 4.2 Welding contractors ........................................................................................................................... 14 4.3 Welders ................................................................................................................................................ 15 4.4 Welding supervisory and coordination personnel .......................................................................... 15 4.5 Testing companies and personnel .................................................................................................... 15 4.5.1 General ................................................................................................................................................. 15 4.5.2 Non-destructive testing (NDT) ........................................................................................................... 15 4.5.3 Destructive testing (DT) ..................................................................................................................... 15 5 Welding consumables ........................................................................................................................ 15 6 Production welding............................................................................................................................. 16 6.1 General requirements ......................................................................................................................... 16 6.1.1 General ................................................................................................................................................. 16 6.1.2 Working area ....................................................................................................................................... 16 6.1.3 Layout of weld joints .......................................................................................................................... 17 6.1.4 Types of weld joints ........................................................................................................................... 17 6.1.5 Joint edge preparation ....................................................................................................................... 17 6.1.6 Weld fit-up ........................................................................................................................................... 17 6.1.7 Different wall thickness ...................................................................................................................... 17 6.1.8 Pipe branches and nozzles ................................................................................................................ 17 6.1.9 Laminations ......................................................................................................................................... 17 6.1.10 Butt welds cross joints ...................................................................................................................... 17 6.2 Joint preparation................................................................................................................................. 17 6.2.1 Pipe end preparation .......................................................................................................................... 17 6.2.2 Alignment of the joints ....................................................................................................................... 17 6.3 Preheating ........................................................................................................................................... 18 6.4 Tacking ................................................................................................................................................ 18 6.5 Welding ................................................................................................................................................ 18 6.6 Actions after welding ......................................................................................................................... 18 6.7 Repair of weld defects ........................................................................................................................ 19 7 Special procedures ............................................................................................................................. 19 7.1 General ................................................................................................................................................. 19 7.2 Attachment of structural parts .......................................................................................................... 19 7.3 Attachment of cathodic protection connections ............................................................................. 19 7.4 Hot-tapping and other welding work on in-service pipelines ........................................................ 20 8 Inspection of the weld joint ............................................................................................................... 20 8.1 General ................................................................................................................................................. 20 8.2 Scope of inspection ............................................................................................................................ 20 8.3 Non-destructive testing and assessment levels ............................................................................. 22 8.4 Time of inspection .............................................................................................................................. 23 8.5 Acceptance criteria ............................................................................................................................. 23 8.6 Recording of test results ................................................................................................................... 24 SIST EN 12732:2013+A1:2014

EN 12732:2013+A1:2014 (E) 3

9 Documentation .................................................................................................................................... 24 9.1 General ................................................................................................................................................. 24 9.2 Archiving requirements ...................................................................................................................... 24 10 Specific requirements for gas infrastructure with a MOP up to and including 16 bar ................. 24 10.1 General ................................................................................................................................................. 24 10.2 Welders ................................................................................................................................................. 24 10.3 Welding supervisory personnel ......................................................................................................... 25 10.4 Production welding ............................................................................................................................. 25 10.4.1 General ................................................................................................................................................. 25 10.4.2 Joint preparation ................................................................................................................................. 25 10.4.3 Welding ................................................................................................................................................. 25 10.5 Requirements for records and documentation ................................................................................ 25 11 Specific requirements for gas infrastructure with a MOP greater than 16 bar ............................. 26 11.1 General ................................................................................................................................................. 26 11.2 Welders ................................................................................................................................................. 26 11.3 Welding supervisory personnel ......................................................................................................... 26 11.4 Qualification of welding procedures ................................................................................................. 26 11.4.1 General ................................................................................................................................................. 26 11.4.2 Filler material requirements for welding procedure qualification .................................................. 26 11.4.3 Impact testing ...................................................................................................................................... 27 11.4.4 Transverse tensile test ........................................................................................................................ 27 11.4.5 All-weld-metal tensile test .................................................................................................................. 28 11.5 Production welding ............................................................................................................................. 28 11.5.1 General ................................................................................................................................................. 28 11.5.2 Joint preparation ................................................................................................................................. 28 11.5.3 Welding ................................................................................................................................................. 28 11.5.4 Repairs of weld defects ...................................................................................................................... 29 11.5.5 Welding consumables ......................................................................................................................... 29 11.6 Destructive testing of production welds ........................................................................................... 29 11.7 Acceptance requirements................................................................................................................... 29 11.8 Requirements for records and documentation ................................................................................ 30 12 Specific requirements for metering, regulating and compressor stations ................................... 31 12.1 General ................................................................................................................................................. 31 12.2 Specific requirements ......................................................................................................................... 31 Annex A (informative)

Qualification procedure for pipeline welders (Girth welds and branch connections) ........................................................................................................................................ 32 A.1 General ................................................................................................................................................. 32 A.2 Approval test ........................................................................................................................................ 32 A.2.1 Execution of the approval test ........................................................................................................... 32 A.2.2 Range of test pieces ............................................................................................................................ 32 A.2.3 Supervision of execution of approval test ........................................................................................ 33 A.3 Inspection ............................................................................................................................................. 33 A.3.1 General ................................................................................................................................................. 33 A.3.2 Testing girth welds .............................................................................................................................. 34 A.3.3 Testing weldolets ................................................................................................................................ 34 A.4 Approval range .................................................................................................................................... 34 A.4.1 General ................................................................................................................................................. 34 A.4.2 Dimension ranges ............................................................................................................................... 34 SIST EN 12732:2013+A1:2014

EN 12732:2013+A1:2014 (E) 4

A.4.3 Techniques .......................................................................................................................................... 34 A.5 Certificate ............................................................................................................................................ 35 A.5.1 General ................................................................................................................................................. 35 A.5.2 Duration of validity ............................................................................................................................. 35 Annex B (informative)

Testing of lamination defects ................................................................................... 36 Annex C (informative)

Time-of-flight diffraction technique (TOFD) ............................................................ 37 C.1 General ................................................................................................................................................. 37 C.2 Additional and substitutional requirements to EN ISO 10863:2011 .............................................. 37 C.2.1 Addition to the whole document EN ISO 10863:2011 ..................................................................... 37 C.2.2 Addition to EN ISO 10863:2011, Clause 3 "Terms and definitions" .............................................. 37 C.2.3 Addition to EN ISO 10863:2011, Clause 5, "Examination Levels" ................................................. 39 C.2.4 Addition to EN ISO 10863:2011, 7.2.2, "Ultrasonic probes" ........................................................... 39 C.2.5 Substitution of EN ISO 10863:2011, Clause 11, 3rd paragraph "Weld testing" ............................. 39 C.2.6 Substitution of EN ISO 10863:2011, 12.5.2 "Sizing" ........................................................................ 40 Annex D (informative)

Critical aspects for hot-tap welding or welding on in-service pipelines ............. 45 D.1 General ................................................................................................................................................. 45 D.2 Recommendations .............................................................................................................................. 45 D.2.1 Equipment ........................................................................................................................................... 45 D.2.2 Supervision ......................................................................................................................................... 45 D.2.3 Safety precautions .............................................................................................................................. 45 D.2.4 Identification ........................................................................................................................................ 45 D.2.5 Filler materials ..................................................................................................................................... 45 D.3 Weld preparation................................................................................................................................. 46 D.4 Welding procedure specification (WPS) .......................................................................................... 46 D.4.1 Description of the WPS ...................................................................................................................... 46 D.4.2 Qualification of the WPS .................................................................................................................... 46 D.4.3 Approval of the WPS .......................................................................................................................... 46 D.5 Qualification of the welder ................................................................................................................. 46 D.6 Precautions ......................................................................................................................................... 46 D.7 Execution ............................................................................................................................................. 47 D.8 Repairs ................................................................................................................................................. 47 D.9 WPS qualification record ................................................................................................................... 47 Annex E (informative)

Visual examination of joints ...................................................................................... 49 E.1 General ................................................................................................................................................. 49 E.2 Recommendations .............................................................................................................................. 49 Annex F (informative)

Manual ultrasonic testing of weld joints for wall thickness between approximately 6 mm and 8 mm ......................................................................................................... 50 F.1 General ................................................................................................................................................. 50 SIST EN 12732:2013+A1:2014

EN 12732:2013+A1:2014 (E) 5

F.2 Setting ................................................................................................................................................... 50 F.2.1 Setting of range ................................................................................................................................... 50 F.2.2 Sensitivity adjustment when using the Distance Gain Size method ............................................. 50 Annex G (normative)

Acceptance criteria - Recommendations for on-site production welds ................. 54 G.1 General ................................................................................................................................................. 54 G.2 Acceptance criteria according to EN ISO 5817 ................................................................................ 54 G.3 Summary of requirements for defect acceptance levels and defect limits ................................... 57 G.3.1 General ................................................................................................................................................. 57 G.3.2 Requirements ....................................................................................................................................... 58 G.4 Method and acceptance criteria for ultrasonic inspection assessment ........................................ 65 G.4.1 Distance Gain Size method ................................................................................................................ 65 G.4.2 Comparative Element method ............................................................................................................ 65 G.4.3 General ................................................................................................................................................. 65 G.4.4 Assessment of indications using automatic pulse-echo technique .............................................. 67 Annex H (informative)

Brazing and aluminothermic welding of leads for cathodic protection systems ................................................................................................................................................ 68 H.1 Joining techniques .............................................................................................................................. 68 H.2 Procedure qualification ....................................................................................................................... 68 H.3 Operation qualification ....................................................................................................................... 70 H.4 Production joints ................................................................................................................................. 70 Annex I (informative)

Significant technical changes between this European Standard and the previous edition ................................................................................................................................... 71 Bibliography ...................................................................................................................................................... 72

SIST EN 12732:2013+A1:2014
EN 12732:2013+A1:2014 (E) 6

Foreword This document (EN 12732:2013+A1:2014) has been prepared by Technical Committee CEN/TC 234 “Gas infrastructure”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2014, and conflicting national standards shall be withdrawn at the latest by October 2014. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes !EN 12732:2013". This document includes Amendment 1 approved by CEN on 2014-02-03. The start and finish of text introduced or altered by amendment is indicated in the text by tags !". This European Standard has been prepared under mandate M/017 given to CEN by the Commission of the European Communities and the European Free Trade Association. Annex I provides details of significant technical changes between this European Standard and the previous edition. There is a complete suite of functional standards prepared by CEN/TC 234 ”Gas infrastructure“ to cover all parts from the input of gas to the transmission system up to the inlet connection of the gas appliances, whether for domestic, commercial or industrial purposes. In preparing this standard a basic understanding of gas infrastructure by the user has been assumed. Gas infrastructure is complex and the importance on safety of its construction and use has led to the development of very detailed codes of practice and operating manuals in the member countries. These detailed statements embrace recognised standards of gas engineering and the specific requirements imposed by the legal structures of the member countries. CEN/TC 234 will continue its work updating this standard to the latest developments at regular intervals. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

SIST EN 12732:2013+A1:2014
EN 12732:2013+A1:2014 (E) 7

1 Scope This European Standard contains requirements for the production and testing of weld joints for the installation and modification of onshore steel pipelines and pipework used in gas infrastructure, including in-service pipelines, for all pressure ranges for the carriage of processed, non-toxic and non-corrosive natural gas according to EN ISO 13686 and for the carriage of non-conventional gases such as injected biomethane, where — the pipeline elements are made of unalloyed or low-alloyed carbon steel; — the pipeline is not located within commercial or industrial premises as integral part of the industrial process on those premises except for any pipelines and facilities delivering gas to such premises; — the pipework is not located within household installations according to EN 1775; — the design temperature of the system is between -40 °C up to and including 120 °C. The onshore steel pipelines and pipework used in gas infrastructure include in-service pipelines, for all pressure ranges for the carriage of processed, non-toxic and non-corrosive natural gas according to EN ISO 13686 and for the carriage of non-conventional gases complying with EN ISO 13686, and for which a detailed technical evaluation of the functional requirements (such as injected biomethane) is performed ensuring there are no other constituents or properties of the gases that can affect the integrity of the pipeline. This standard is not applicable to welds produced prior to the publication of this European Standard. Table 1 assigns the application areas to quality requirement categories as a function of the working pressure and pipe materials used. Table 1 — Allocation to quality requirement categories Quality requirement category A

...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.