EN 12007-5:2024
(Main)Gas infrastructure - Pipelines for maximum operating pressure up to and including 16 bar - Part 5: Service lines - Specific functional requirements
Gas infrastructure - Pipelines for maximum operating pressure up to and including 16 bar - Part 5: Service lines - Specific functional requirements
This document describes the specific functional requirements for the transportation of gases (gaseous energy carriers) through service lines in addition to the general functional requirements of EN 12007 1 for:
a) a maximum operating pressure (MOP) up to and including 16 bar;
b) an operating temperature between −20 °C and +40 °C;
c) gases and blends of gases which are in the gaseous state when conveyed in the gas pipeline infrastructure such as hydrogen, hydrogen rich, and methane rich gases, dimethyl ether (DME) and propane and butanes used for combustion and/or as feedstock, excluding steam and compressed air, where technical evaluation has ensured that operating conditions, constituents and properties of the gas do not affect the safe operation and maintenance of the service line.
It applies to their design, construction, commissioning, decommissioning, operation, maintenance, extension and other associated works including safety and environmental aspects. The service line is the physical asset comprising of pipework from the gas main branch saddle or top tee to the outlet of the distribution system operator’s nominated point(s) of delivery (for example: isolation valve, regulator, meter connection or combination of regulator and isolation valve).
This document does not apply retrospectively to installations before the publication date unless specifically stated.
Specific functional requirements for:
— polyethylene pipelines are given in EN 12007 2;
— steel pipelines are given in EN 12007 3;
— polyamide (PA-U) pipelines are given in CEN/TS 12007 6;
— pipework for buildings are given in EN 1775;
— pressure regulating installations are given in EN 12279 or EN 12186;
— pressure testing, commissioning and decommissioning are given in EN 12327;
— safety management system (SMS) and pipeline integrity management system (PIMS) are given in EN 17649.
This document specifies common basic principles for gas infrastructure. Users of this document are expected to be aware that there can exist more detailed national standards and/or codes of practice in the CEN member countries. This document is intended to be applied in association with these national standards and/or codes of practice setting out the above-mentioned basic principles.
In the event of terms of additional requirements in legislation/regulation than in this document, CEN/TR 13737 (all parts) illustrates these terms.
CEN/TR 13737 gives:
— description of legislations/regulations applicable in a member state;
— if appropriate, more restrictive national requirements;
— a national contact point for the latest information.
Gasinfrastruktur - Rohrleitungen mit einem maximal zulässigen Betriebsdruck bis einschließlich 16 bar - Teil 5: Netzanschlussleitungen - Spezifische funktionale Anforderungen
Dieses Dokument beschreibt die spezifischen funktionalen Anforderungen für den Transport von Gasen (gasförmige Energieträger) durch Netzanschlussleitungen zusätzlich zu den allgemeinen funktionalen Anforderungen nach EN 12007 1 für:
a) einen maximalen Betriebsdruck (MOP) bis einschließlich 16 bar;
b) eine Betriebstemperatur zwischen −20 °C und +40 °C;
c) Gase und Gasgemische, die sich bei der Beförderung in der Gasleitungsinfrastruktur in einem gasförmigen Zustand befinden, wie Wasserstoff, wasserstoffreiche und methanreiche Gase, Dimethylether (DME) sowie Propan und Butane, die zur Verbrennung und/oder Beschickung verwendet werden, ausgenommen Dampf und Druckluft, wenn durch eine technische Bewertung sichergestellt wurde, dass die Betriebsbedingungen oder die Bestandteile oder Eigenschaften des Gases den sicheren Betrieb und die Instandhaltung der Versorgungsleitung nicht beeinträchtigen.
Dieses Dokument ist anwendbar für Planung, Bau, In- und Außerbetriebnahme, Betrieb, Instandhaltung, Erweiterung sowie andere damit verbundene Arbeiten, einschließlich Umwelt- und Sicherheitsaspekten. Die Netzanschlussleitung ist die Anlage, die aus Rohrleitungen vom Anschlussstück der Gasversorgungsleitung bis zum Anschluss an die vom Netzbetreiber benannte(n) Übergabestelle(n) besteht (zum Beispiel: Absperrventil, Gasdruckregelgerät, Gaszähleranschluss oder eine Kombination von Gasdruckregelgerät und Absperrventil).
Dieses Dokument ist nicht rückwirkend anwendbar für Installationen vor dem Datum der Veröffentlichung, sofern nicht spezifisch angegeben.
Spezifische funktionale Anforderungen für:
Polyethylen-Rohrleitungen sind EN 12007 2 zu entnehmen;
Stahlrohrleitungen sind EN 12007 3 zu entnehmen;
Rohrleitungen aus Polyamid (PA U) sind CEN/TS 12007 6 zu entnehmen;
Leitungsanlagen für Gebäude sind EN 1775 zu entnehmen;
Druckregeleinrichtungen sind EN 12279 oder EN 12186 zu entnehmen;
Druckprüfung, In- und Außerbetriebnahme sind EN 12327 zu entnehmen;
Sicherheitsmanagementsysteme (SMS, en: safety management system) und Rohrleitungsintegritätsmanagementsysteme (PIMS, en: pipeline integrity management system) sind EN 17649 zu entnehmen.
Dieses Dokument legt allgemeine Grundsätze für die Gasinfrastruktur fest. Von Anwendern dieses Dokuments wird erwartet, dass sie sich darüber bewusst sind, dass in den CEN-Mitgliedstaaten möglicherweise detailliertere nationale Normen und/oder Verfahrensvorschriften bestehen. Dieses Dokument ist für die Anwendung in Zusammenhang mit diesen nationalen Normen und/oder Verfahrensvorschriften vorgesehen, indem sie vorstehend erwähnte Grundsätze festlegt.
Wenn in den Gesetzen/Verordnungen zusätzliche Anforderungen gestellt werden als in diesem Dokument aufgeführt sind, werden diese Bestimmungen in CEN/TR 13737 (alle Teile) erläutert.
In CEN/TR 13737 ist Folgendes enthalten:
Beschreibung der in einem Mitgliedstaat geltenden Gesetze/Bestimmungen;
strengere nationale Anforderungen, sofern zutreffend;
eine nationale Kontaktstelle für aktuelle Angaben.
Infrastructures gazières - Canalisations pour pression de service maximale inférieure ou égale à 16 bar - Partie 5: Branchements - Recommandations fonctionnelles spécifiques
Le présent document décrit les exigences fonctionnelles spécifiques applicables au transport de gaz (vecteurs énergétiques gazeux) au moyen de branchements, en complément des exigences fonctionnelles générales de l’EN 12007-1, pour :
a) une pression de service maximale (MOP) inférieure ou égale à 16 bar ;
b) une température de service comprise entre -20 °C et +40 °C ;
c) les gaz non corrosifs, y compris le gaz naturel, le biométhane, l’hydrogène et les mélanges de ces gaz, lorsqu’une évaluation technique a permis de s’assurer que les conditions d’exploitation ou les constituants ou les propriétés du gaz n’affectent pas la sécurité de l’exploitation et de la maintenance des branchements.
Il s’applique à leur conception, leur construction, leur mise en service, leur mise hors service, leur exploitation, leur maintenance, leur extension et aux autres travaux connexes, y compris les aspects relatifs à l’environnement et la sécurité. Le branchement est l’élément physique comprenant la tuyauterie depuis une selle de raccordement ou un raccord en T sur la conduite de desserte de gaz jusqu’à la sortie du ou des points de livraison nommés par l’opérateur du réseau de distribution (par exemple, une vanne d’isolement, un régulateur, un raccordement de compteur ou une combinaison d’un régulateur et d’une vanne d’isolement).
Il ne doit pas être appliqué rétroactivement aux installations mises en service avant la date de publication, sauf indication contraire.
Les exigences fonctionnelles spécifiques pour :
— les canalisations en polyéthylène sont données dans l’EN 12007-2 ;
— les canalisations en acier sont données dans l’EN 12007-3 ;
— les canalisations en polyamide non plastifié (PA-U) sont données dans la CEN/TS 12007-6 ;
— les tuyauteries pour les bâtiments sont données dans l’EN 1775 ;
— les installations de régulation de pression de gaz sont données dans l’EN 12279 ou l’EN 12186 ;
— les essais de pression, la mise en service et la mise hors service sont données dans l’EN 12327 ;
— le système de management de la sécurité (SMS) et le système de management de l’intégrité des canalisations (PIMS) sont données dans l’EN 17649.
Le présent document spécifie les principes basiques communs aux infrastructures gazières. Les utilisateurs du présent document sont supposés garder à l’esprit l’existence éventuelle, dans les pays membres du CEN, de codes de bonne pratique et/ou de normes nationales plus détaillées. Le présent document est destiné à s’appliquer conjointement avec ces normes nationales et/ou codes de bonne pratique, qui définissent les principes de base précités.
Lorsqu’il existe des exigences supplémentaires dans la législation/règlementation par rapport à celles du présent document, le CEN/TR 13737 (toutes les parties) présente ces exigences.
Le CEN/TR 13737 donne :
— la description de toutes les législations/réglementations applicables dans un état membre ;
— le cas échéant, des exigences nationales plus restrictives ;
— un point de contact national pour les dernières informations.
Infrastruktura za plin - Cevovodni sistemi za najvišji delovni tlak do vključno 16 bar - 5. del: Priključni cevovodi - Posebne funkcionalne zahteve
Ta dokument poleg splošnih funkcionalnih zahtev iz standarda EN 12007-1 opisuje posebne funkcionalne zahteve za transport plinov (nosilci plinaste energije) prek priključnih cevovodov za:
a) najvišji delovni tlak (MOP) do vključno 16 bar;
b) delovno temperaturo med –20 °C in +40 °C;
c) pline in mešanice plinov, ki so med transportom v plinovodni infrastrukturi v plinastem stanju, kot so vodik, plini, bogati z vodikom, in plini, bogati z metanom, dimetil eter (DME) ter propan in butani, ki se uporabljajo za zgorevanje in/ali kot surovina, razen pare in stisnjenega zraka, pri katerih je bilo s tehničnim vrednotenjem zagotovljeno, da delovni pogoji, sestavine in lastnosti plina ne vplivajo na varno delovanje in vzdrževanje priključnega cevovoda.
Uporablja se za projektiranje, konstruiranje, začetek in prenehanje obratovanja, delovanje, vzdrževanje, obnovo, razširitev ter druga povezana dela, vključno z varnostnimi in okoljskimi vidiki. Priključni cevovod je fizično sredstvo, sestavljeno iz plinovoda, ki vodi iz nosilnega razvejitvenega priključka T glavnega plinovoda ali vrhnjega priključka T do odvodnih točk dobave, ki jih izbere upravljavec distribucijskega sistema (npr. ločilni ventil, regulator, povezava s števcem ali kombinacija regulatorja in ločilnega ventila).
Ta dokument se ne uporablja retrospektivno za napeljave, nameščene pred datumom objave, razen če je izrecno navedeno drugače.
Posebne funkcionalne zahteve za:
– polietilenske cevovodne sisteme so navedene v standardu EN 12007-2;
– jeklene cevovodne sisteme so navedene v standardu EN 12007-3;
– cevovodne sisteme iz poliamida (PA-U) so navedene v standardu CEN/TS 12007-6;
– cevovodne sisteme za stavbe so navedene v standardu EN 1775;
– napeljave za regulacijo tlaka so navedene v standardu EN 12279 ali EN 12186;
– tlačni preskus, začetek in prenehanje obratovanja so navedeni v standardu EN 12327;
– sistem varnega upravljanja (SMS) in sistem celostnega obvladovanja cevovodnega sistema (PIMS) sta podana v standardu EN 17649.
Ta dokument določa splošna osnovna načela za infrastrukturo za plin. Uporabniki tega dokumenta se morajo zavedati, da lahko v državah članicah CEN obstajajo podrobnejši nacionalni standardi in/ali kodeksi ravnanja. Ta dokument je namenjen uporabi v povezavi s temi nacionalnimi standardi in/ali kodeksi ravnanja, ki določajo zgoraj navedena osnovna načela.
Kadar obstajajo pogoji dodatnih zahtev v zakonodaji/predpisih, ki niso navedeni v tem dokumentu, so ti zajeti v standardu CEN/TR 13737 (vsi deli).
Standard CEN/TR 13737 navaja:
– opis zakonodaje/predpisov, ki veljajo v državi članici;
– strožje nacionalne zahteve, če je primerno;
– nacionalno kontaktno točko za najnovejše informacije.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-februar-2025
Nadomešča:
SIST EN 12007-5:2014
Infrastruktura za plin - Cevovodni sistemi za najvišji delovni tlak do vključno 16
bar - 5. del: Priključni cevovodi - Posebne funkcionalne zahteve
Gas infrastructure - Pipelines for maximum operating pressure up to and including 16 bar
- Part 5: Service lines - Specific functional requirements
Gasinfrastruktur - Rohrleitungen mit einem maximal zulässigen Betriebsdruck bis
einschließlich 16 bar - Teil 5: Netzanschlussleitungen - Spezifische funktionale
Anforderungen
Infrastructures gazières - Canalisations pour pression de service maximale inférieure ou
égale à 16 bar - Partie 5: Branchements - Recommandations fonctionnelles spécifiques
Ta slovenski standard je istoveten z: EN 12007-5:2024
ICS:
91.140.40 Sistemi za oskrbo s plinom Gas supply systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 12007-5
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2024
EUROPÄISCHE NORM
ICS 23.040.01 Supersedes EN 12007-5:2014
English Version
Gas infrastructure - Pipelines for maximum operating
pressure up to and including 16 bar - Part 5: Service lines -
Specific functional requirements
Infrastructures gazières - Canalisations pour pression Gasinfrastruktur - Rohrleitungen mit einem maximal
de service maximale inférieure ou égale à 16 bar - zulässigen Betriebsdruck bis einschließlich 16 bar -
Partie 5: Branchements - Recommandations Teil 5: Netzanschlussleitungen - Spezifische
fonctionnelles spécifiques funktionale Anforderungen
This European Standard was approved by CEN on 1 August 2024.
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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12007-5:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
Introduction . 6
1 Scope . 8
2 Normative references . 9
3 Terms and definitions . 10
3.1 General terminology . 10
3.2 Pressure related terminology . 12
3.3 Jointing Methods . 12
4 Design . 13
4.1 General . 13
4.2 Protection . 15
4.3 Materials and components . 15
4.3.1 General . 15
4.3.2 Isolation valve . 16
4.3.3 Flow limiting device . 16
4.3.4 Safety devices . 16
4.3.5 Regulators and meters . 16
4.4 Service line routing . 16
4.4.1 External routing . 16
4.4.2 Wall and floor transition . 17
4.4.3 Internal routing . 18
4.5 Pipe sizing . 18
4.6 Identification . 19
5 Construction . 19
5.1 General . 19
5.2 Storage, handling and transportation . 19
5.3 Service line installation . 19
5.4 Connections to existing gas infrastructure . 20
6 Quality control . 21
6.1 Quality management system . 21
6.2 Inspection prior to installation . 21
6.3 Inspection during installation . 21
6.3.1 Ground conditions . 21
6.3.2 Joint integrity . 21
6.4 Competence . 21
7 Pressure testing . 22
7.1 General . 22
7.2 Safety during pressure testing . 22
7.3 Prior to testing . 23
7.4 Test mediums . 23
7.5 Measurement equipment . 23
7.6 Strength test . 23
7.7 Tightness test . 24
7.8 Failed pressure test . 24
8 Commissioning and decommissioning . 25
8.1 General . 25
8.2 Purging . 25
9 Operation and maintenance . 25
9.1 General . 25
9.2 Record system and traceability . 25
Annex A (informative) Material, component and joint selection . 27
Annex B (normative) Jointing methods . 29
Bibliography . 31
European foreword
This document (EN 12007-5:2024) 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 May 2025, and conflicting national standards shall be
withdrawn at the latest by May 2025.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 12007-5:2014.
— revision to scope;
— introduction of definition of gas to include hydrogen rich and methane rich gases, dimethyl ether
(DME) and propane and butanes;
— introduction of definitions for pressed joints terminology;
— revision of subclause 5.1;
— introduction of new Annex A, Material, component and joint selection;
— revision to Annex B, Jointing methods.
This document has been prepared under a standardization request addressed to CEN by the European
Commission. The Standing Committee of the EFTA States subsequently approves these requests for its
Member States.
This document is part of the series EN 12007 “Gas infrastructure — Pipelines for maximum operating
pressure up to and including 16 bar” which comprises the following parts:
— Part 1: General functional requirements;
— Part 2: Specific functional requirements for polyethylene (MOP up to and including 10 bar);
— Part 3: Specific functional requirements for steel;
— Part 4: Specific functional requirements for renovation;
— Part 5: Specific functional requirements of new service lines;
— Part 6 (CEN/TS): Specific functional recommendations for unplasticized polyamide (PA-U).
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the United
Kingdom.
Introduction
This document describes the general functional requirements for gas supply through service line pipe
systems and covers the pressure range up to and including 16 bar maximum operating pressure (MOP).
It gives normative and informative references for safe and secure gas infrastructures. It applies to their
design, construction, operation and the related aspects of safety, environment and public health, all in
order to provide a safe and secure supply of gas.
This document is intended to be used in addition to the EN 12007 series of European Standards.
The requirements of this document are based on safe gas engineering practice under conditions normally
encountered in the gas industry. Requirements for all unusual conditions cannot be specifically provided
for, nor are all engineering and construction details prescribed.
Existing industrial safety regulations applying to work areas, safety devices and safe work practices are
not intended to be superseded by this document.
Persons responsible for the design, construction and operation of gas infrastructures should have regard
to the guidance given in this document, the EN 12007 series of European Standards and to other relevant
standards. It is the responsibility of these persons to apply these functional requirements, supplemented
with other proven good practice to the particular circumstances of each gas infrastructure.
The recommendations in this document are intended to be applied by competent persons who have
suitable knowledge and experience. Notes in the text are informative.
The designer, constructor or operator of service line and pipeline systems is cautioned that this document
is not a design handbook or code of practice. Additional national or company standards describing the
details are needed. These detailed standards should be in line with the basic principles of this document.
All pressures are gauge pressure unless stated otherwise.
In preparing this document it was recognized that the suite of relevant European Standards is incomplete.
Reference may be made where appropriate to international, national or other standards until relevant
European Standards are available.
The ownership and operation responsibility can vary between member states. The extent of the service
line can differ in each member state. To illustrate this, the various points of deliveries are indicated in
Figure 1. Consult Figure 1 (A/B/C/D/E) and member state regulations and standards.
NOTE The valve at point A is not necessarily utilized by each member state.
National preference for points of deliveries should be stated in the national foreword.
Key
P gas main Distribution system operator nominated Point(s) of
Delivery:
T Top Tee / Branch Saddle / Equal Tee A outlet of below ground service line valve outside
the building
M/R Meter and/or Pressure Regulating B outlet of above ground service line valve outside
installation the building
C outlet of meter/regulator outside the building
D outlet of above ground service line valve inside the
building
E outlet of meter/regulator inside the building
Figure 1 — Distribution system operator nominated point of delivery
1 Scope
This document describes the specific functional requirements for the transportation of gases (gaseous
energy carriers) through service lines in addition to the general functional requirements of EN 12007-1
for:
a) a maximum operating pressure (MOP) up to and including 16 bar;
b) an operating temperature between −20 °C and +40 °C;
c) gases and blends of gases which are in the gaseous state when conveyed in the gas pipeline
infrastructure such as hydrogen, hydrogen rich, and methane rich gases, dimethyl ether (DME) and
propane and butanes used for combustion and/or as feedstock, excluding steam and compressed air,
where technical evaluation has ensured that operating conditions, constituents and properties of the
gas do not affect the safe operation and maintenance of the service line.
It applies to their design, construction, commissioning, decommissioning, operation, maintenance,
extension and other associated works including safety and environmental aspects. The service line is the
physical asset comprising of pipework from the gas main branch saddle or top tee to the outlet of the
distribution system operator’s nominated point(s) of delivery (for example: isolation valve, regulator,
meter connection or combination of regulator and isolation valve).
This document does not apply retrospectively to installations before the publication date unless
specifically stated.
Specific functional requirements for:
— polyethylene pipelines are given in EN 12007-2;
— steel pipelines are given in EN 12007-3;
— polyamide (PA-U) pipelines are given in CEN/TS 12007-6;
— pipework for buildings are given in EN 1775;
— pressure regulating installations are given in EN 12279 or EN 12186;
— pressure testing, commissioning and decommissioning are given in EN 12327;
— safety management system (SMS) and pipeline integrity management system (PIMS) are given in
EN 17649.
This document specifies common basic principles for gas infrastructure. Users of this document are
expected to be aware that there can exist more detailed national standards and/or codes of practice in
the CEN member countries. This document is intended to be applied in association with these national
standards and/or codes of practice setting out the above-mentioned basic principles.
In the event of terms of additional requirements in legislation/regulation than in this document,
CEN/TR 13737 (all parts) illustrates these terms.
CEN/TR 13737 gives:
— description of legislations/regulations applicable in a member state;
— if appropriate, more restrictive national requirements;
— a national contact point for the latest information.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 751-1, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and
hot water — Part 1: Anaerobic jointing compounds
EN 751-2, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and
hot water — Part 2: Non-hardening jointing compounds
EN 751-3, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and
hot water — Part 3: Unsintered PTFE tapes and PTFE strings
EN 1057, Copper and copper alloys — Seamless, round copper tubes for water and gas in sanitary and
heating applications
EN 1254 (all parts), Copper and copper alloys — Plumbing fittings
EN 1775:2007, Gas supply — Gas pipework for buildings — Maximum operating pressure less than or equal
to 5 bar — Functional recommendations
EN 1776, Gas infrastructure — Gas measuring systems — Functional requirements
EN 10226-1, Pipe threads where pressure tight joints are made on the threads — Part 1: Taper external
threads and parallel internal threads — Dimensions, tolerances and designation
EN 10226-2, Pipe threads where pressure tight joints are made on the threads — Part 2: Taper external
threads and taper internal threads — Dimensions, tolerances and designation
EN 10241, Steel threaded pipe fittings
EN 10242, Threaded pipe fitting in malleable cast iron
EN 12007-1:2012, Gas infrastructure — Pipelines for maximum operating pressure up to and including 16
bar — Part 1: General functional requirements
EN 12007-2, Gas infrastructure — Pipelines for maximum operating pressure up to and including 16 bar —
Part 2: Specific functional requirements for polyethylene (MOP up to and including 10 bar)
EN 12007-3, Gas infrastructure — Pipelines for maximum operating pressure up to and including 16 bar —
Part 3: Specific functional requirements for steel
CEN/TS 12007-6, Gas infrastructure — Pipelines for maximum operating pressure up to and including 16
bar — Part 6: Specific functional recommendations for unplasticized polyamide (PA-U)
EN 12186, Gas infrastructure — Gas pressure regulating stations for transmission and distribution —
Functional requirements
EN 12279, Gas supply systems — Gas pressure regulating installations on service lines — Functional
requirements
EN 12327, Gas infrastructure — Pressure testing, commissioning and decommissioning procedures —
Functional requirements
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1 General terminology
3.1.1
gas infrastructure
pipeline systems including pipework and their associated stations or plants for the transmission and
distribution of gas
3.1.2
gas main
pipework in a gas infrastructure to which service lines are connected
3.1.3
service line
pipework from the gas main to the point of delivery of the gas into the installation pipework
3.1.4
casing
protection by means of a construction around the pipeline in order to prevent external loads or third
party interference
3.1.5
sleeve
protective pipe through which a gas pipe passes
3.1.6
point of delivery
point of a gas network where the gas is transferred to the user
Note 1 to entry: This can be at a means of isolation (e.g. at the outlet of a LPG storage vessel) or at a meter
connection.
Note 2 to entry: For this document, the point of delivery is typically nominated by the distribution system
operator and can be defined in National Regulations or Codes of Practice, see Figure 1.
3.1.7
authorised person
competent person who is appointed to fulfil a given task on gas infrastructure
3.1.8
competent person
person who is trained, experienced and approved to perform activities relating to gas infrastructures or
installation pipework
Note 1 to entry: Means of approval, if any, will be determined within each member country.
3.1.9
flow limiting device
purpose manufactured self-actuating device which can limit or stop uncontrolled excess flow of gas
3.1.10
installation pipework
pipework downstream of the point of delivery terminating at the appliance inlet connection
Note 1 to entry: This pipework is normally the property of the customer.
3.1.11
purging
process for safely removing air or inert gas from pipework and/or pipeline components and replacing it
with gas, or the reverse process
Note 1 to entry: A distinction is made between the following methods:
— direct purging is the displacement of air by gas or vice versa;
— indirect purging is the displacement of air by inert gas followed by the displacement by gas or vice versa.
Note 2 to entry: Alternatively, by means of a barrier (a slug of inert gas or a pig) between the air and the gas or
vice versa.
3.1.12
pipeline components
elements from which the pipeline is constructed
Note 1 to entry: The following are distinct pipeline elements:
— pipes, including cold formed bends;
— fittings;
— ancillaries;
— pressure vessels.
EXAMPLE 1 Reducers, tees, factory-made elbows and bends, flanges, caps, welding stubs, mechanical joints.
EXAMPLE 2 Valves, expansion joints, insulating joints, pressure regulators, pumps, compressors.
3.1.13
strength test
specific procedure to verify that the pipework and/or station meets the requirements for mechanical
strength
3.1.14
tightness test
specific procedure to verify that the pipework and/or station meets the requirements for tightness
3.1.15
combined test
specific procedure to verify that the pipework and/or station meets the requirements for mechanical
strength and tightness
3.1.16
gas
gases
gaseous energy carriers and blends which are in the gaseous state when conveyed in the gas pipeline
infrastructure such as hydrogen, hydrogen rich, and methane rich gases, dimethyl ether (DME) and
propane and butanes used for combustion and/or as feedstock, excluding steam and compressed air
3.1.17
electrical insulating joint
insulating joint
fitting installed to electrically isolate one section of pipeline from another
3.2 Pressure related terminology
3.2.1
design pressure
DP
pressure on which design calculations are based
3.2.2
maximum operating pressure
MOP
maximum pressure at which a system can be operated continuously under normal operating conditions
Note 1 to entry: Normal operating conditions are described as no fault in any device or stream.
3.2.3
strength test pressure
STP
pressure applied to a system during strength testing
3.2.4
tightness test pressure
TTP
pressure applied to a system during tightness testing
3.2.5
combined test pressure
CTP
pressure applied to a system during combined testing
3.3 Jointing methods
3.3.1
pressed joint
joint in which tightness is achieved by using an appropriate tool for either compressing a fitting to form
the joint or expanding a pipe to enable forming the joint
Note 1 to entry: Such a joint cannot be disassembled and reused.
Note 2 to entry: Sealing can require the use of elastomeric o-rings.
3.3.2
joint
means of connecting components of a gas installation
3.3.3
threaded joint
joint in which gas tightness is achieved by metal-to-metal contact within threads with the assistance of a
sealant
3.3.4
mechanical joint
joint in which gas tightness is achieved by compression with or without a seal
EXAMPLE A flanged joint is a mechanical joint with a seal; this joint can be disassembled and reassembled. A
union joint is a mechanical joint with or without a seal; this joint can be disassembled and reassembled.
3.3.5
welding
permanent joining (union) of two or more parts by heat or pressure or a combination of both (fusion, arc
or oxy-acetylene), such that the materials form a continuity
Note 1 to entry: A filler metal having a melting point similar to that of the materials to be welded may be used.
3.3.6
brazing
operation in which metal parts are permanently joined by means of capillary action of a filler metal in the
liquid state with a melting temperature, higher than 450 °C, lower than that of the parts to be joined and
wetting the parent metal(s), which does not participate in the making of the joint
Note 1 to entry: This can be referred to as hard soldering.
3.3.7
soldering
jointing by means of capillary action of a filler metal having a melting (liquidus) temperature lower than
450 °C
Note 1 to entry: This can be referred to as soft soldering.
4 Design
4.1 General
4.1.1 Any person who is responsible for the design of service lines shall be a competent person.
4.1.2 Gas infrastructures shall be designed to provide a safe and continuous supply of gas. This design
considers technical aspects and procedures together with environmental and safety aspects in
accordance with of EN 12007-1:2012, Clause 7.
4.1.3 The characteristics of materials of pipes, fittings and components and the mode of construction
of service lines shall be appropriate to the types of gas being supplied and the conditions under which
they are operated.
NOTE Material, component and joint selection is shown in Annex A (informative).
4.1.4 The design of the service line under normal operational conditions shall address, at a minimum
but not be limited to, the effects of:
— the MOP and flow rates;
— ground subsidence;
— temperature, and fluctuations (high or low);
— loading due to depth of cover;
— chemical corrosion by water, e.g. extra-ordinary acids, salts and (cyclic) hydrocarbons;
— other underground infrastructures (operating under normal conditions);
— mechanical impact e.g. manual digging tools, vehicles, etc.;
— gas velocity causing erosion;
— seismic activity; and
— UV exposure
NOTE Additional considerations from external elements can also include:
— traffic loading;
— stray electrical currents; and
— gradual growth of tree roots.
4.1.5 The design should consider additional measures based on the following factors:
— location of service line e.g. outside/inside, above ground/below ground, etc;
— the building usage;
— the supply pressure;
— the local public and traffic density; and
— the response time to make safe.
4.1.6 Service lines shall be designed and constructed to facilitate maintenance. The distance to other
structures and infrastructures should be considered.
4.1.7 For emergency isolation, maintenance and alteration there shall be a minimum of one manual
isolation valve. The manual isolation valve shall be accessible to the distribution system operator and/or
the consumer.
4.1.8 Specific additional protection measures should be considered to minimize any impact of failure
of service line components where practicable.
4.1.9 Connections to the gas main shall not weaken or compromise the gas system.
4.1.10 All service lines shall be designed taking into consideration any potential hazardous area
associated with the service line and any potential ignition sources surrounding the service line.
NOTE Attention is drawn to Directive 1999/92/EC, Directive 2014/34/EU and the requirements of the
EN 60079 series.
4.2 Protection
4.2.1 The design shall consider protection of the service line from impact, corrosion, UV and vandalism.
All steel service lines should have corrosion protection in accordance with EN 12007-3.
4.2.2 The design shall protect against the uncontrolled rel
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