Gas infrastructure - Injection stations - Part 1: General requirements

This document describes functional requirements of stations for the injection of biomethane, substitute natural gas (SNG) and hydrogen fuel gas into gas transmission and distribution systems operated with fuel gases (natural gas, biomethane, SNG, hydrogen fuel gas, fuel gas mixtures, etc.) in accordance with European technical rules that ensure the interoperability of systems.
Figure 1 describes the general approach including all the relevant functions that can be installed in different configurations. [Figure 1 — Example of an injection station with gas purification]
This document also applies to refeeding stations that feed such gases back into upstream gas supply networks, [Figure 2 — Refeeding station]
This document represents the state of the art at the time of its preparation.
This document does not apply to injection stations operating prior to the publication of this document.
This document specifies common basic principles for gas infrastructure. Users of this document are expected to be aware of 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 conflicts in terms of more restrictive requirements in national legislation/regulation with the requirements of this document, the national legislation/regulation takes precedence as illustrated in CEN/TR 13737 (all parts).
CEN/TR 13737 (all parts) gives:
—   clarification of all legislations/regulations applicable in a member state;
—   if appropriate, more restrictive national requirements;
—   a national contact point for the latest information.

Gasinfrastruktur - Einspeiseanlagen - Teil 1: Allgemeine Anforderungen

Dieses Dokument legt die funktionalen Anforderungen für Anlagen für die Einspeisung von Biomethan, synthetischem Methan (en: substitute natural gas, SNG) und Wasserstoff in Gastransport- und Verteilungssysteme (Erdgas, Biomethan, SNG, Wasserstoff, Brenngasgemischen) in Übereinstimmung mit den europäischen technischen Vorschriften, die die Interoperabilität von Systemen sicherstellen, fest.
Bild 1 beschreibt den allgemeinen Ansatz einschließlich aller relevanten Funktionen, die in verschiedenen Konfigurationen installiert werden können.
Dieses Dokument ist ebenfalls für Rückspeiseanlagen der genannten Gase anwendbar. (Siehe Bild 2)
Dieses Dokument entspricht dem Stand der Technik zum Zeitpunkt seiner Erstellung.
Dieses Dokument ist nicht für vor der Veröffentlichung desselben in Betrieb genommene Einspeiseanlagen anwendbar.
Dieses Dokument legt gemeinsame Grundprinzipien für die Gasinfrastruktur fest. Die Anwender dieses Dokuments sollten sich bewusst sein, dass ausführlichere nationale Normen und/oder Verfahrensregeln in den CEN-Mitgliedstaaten bestehen können. Dieses Dokument soll in Verbindung mit diesen, die oben erwähnten allgemeinen Grundsätze darlegenden nationalen Normen und/oder Grundprinzipien angewendet werden.
Im Fall von zusätzlichen Anforderungen in nationalen gesetzlichen Vorschriften/Verordnungen zu diesem Dokument verdeutlicht CEN/TR 13737 (alle Teile) diese Anforderungen.
CEN/TR 13737 (alle Teile) enthält:
- gesetzliche Vorschriften/Verordnungen in einem Mitgliedsstaat;
- weitergehende strengere nationale Anforderungen, sofern zutreffend;
- einen nationalen Ansprechpartner für die Weitergabe neuester Informationen.

Infrastructure de gaz - Installation pour l'injection de gaz renouvelable dans les reseaux de gaz naturel - Partie 1: Exigences fonctionnelles générales

Le présent document établit les exigences fonctionnelles relatives aux stations d'injection de biométhane, de gaz naturel de substitution (GNS) et de gaz combustible hydrogène dans les réseaux de transport et de distribution de gaz exploités avec des gaz combustibles (gaz naturel, biométhane, GNS, gaz combustible hydrogène, mélanges de gaz combustibles) conformément aux règles techniques européennes qui assurent l'interopérabilité des systèmes.
La Figure 1 décrit l'approche générale, y compris toutes les fonctions pertinentes pouvant être installées dans différentes configurations.
Le présent document s'applique également aux stations de rebours qui réinjectent ces gaz dans les réseaux d'approvisionnement en gaz en amont ; voir la Figure 2.
Le présent document représente l'état de l'art au moment de son élaboration.
Le présent document ne s'applique pas aux stations d'injection en fonctionnement avant la publication du présent document.
Le présent document spécifie les principes de base communs pour les infrastructures gazières. Il convient que les utilisateurs du présent document gardent à l'esprit l'existence éventuelle, dans les pays membres du CEN, de codes de pratique et/ou de Normes nationales plus détaillés. Le présent document est destiné à être appliqué conjointement avec ces normes nationales et/ou codes de pratique, qui détaillent les principes de base précités.
Si la législation/réglementation nationale contient des termes relatifs à des exigences supplémentaires, en plus de ceux du présent document, le CEN/TR 13737 (toutes les parties) illustre ces termes.
Le CEN/TR 13737 (toutes les parties) donne :
- la législation/les réglementations applicables dans un État membre ;
- si applicable, des exigences nationales plus contraignantes ;
- un point de contact national pour les informations les plus récentes.

Infrastruktura za plin - Postaje za injiciranje - 1. del. Splošne zahteve

General Information

Status
Not Published
Public Enquiry End Date
02-Jun-2023
Technical Committee
Current Stage
4020 - Public enquire (PE) (Adopted Project)
Start Date
01-Dec-2022
Due Date
20-Apr-2023
Completion Date
02-Aug-2023

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SLOVENSKI STANDARD
oSIST prEN 17928-1:2023
01-maj-2023
Infrastruktura za plin - Postaje za injiciranje - 1. del. Splošne zahteve
Gas infrastructure - Injection stations - Part 1: General requirements
Gasinfrastruktur - Einspeiseanlagen - Teil 1: Allgemeine Anforderungen
Infrastructure de gaz - Installation pour l'injection de gaz renouvelable dans les reseaux
de gaz naturel - Partie 1: Exigences fonctionnelles générales
Ta slovenski standard je istoveten z: prEN 17928-1
ICS:
27.190 Biološki viri in drugi Biological sources and
alternativni viri energije alternative sources of energy
75.180.01 Oprema za industrijo nafte in Equipment for petroleum and
zemeljskega plina na splošno natural gas industries in
general
oSIST prEN 17928-1:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 17928-1:2023

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oSIST prEN 17928-1:2023


DRAFT
EUROPEAN STANDARD
prEN 17928-1
NORME EUROPÉENNE

EUROPÄISCHE NORM

April 2023
ICS 27.190
English Version

Gas infrastructure - Injection stations - Part 1: General
requirements
Infrastructure de gaz - Installation pour l'injection de Gasinfrastruktur - Einspeiseanlagen - Teil 1:
gaz renouvelable dans les reseaux de gaz naturel - Allgemeine Anforderungen
Partie 1: Exigences fonctionnelles générales
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 234.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 17928-1:2023 E
worldwide for CEN national Members.

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prEN 17928-1:2023 (E)
Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 6
3 Terms and definitions . 8
4 General requirements . 12
4.1 General . 12
4.2 Quality and management system . 13
4.3 Environmental constraints . 13
4.4 Coordination requirements and definition of interfaces . 16
4.5 On-site station diagram . 17
4.6 Explosion protection . 17
5 Operational functions . 18
5.1 Nominal service conditions of injection stations . 18
5.2 Backflow and refeeding . 18
6 Overall safety requirements and protection against inadmissible operating modes . 19
6.1 General requirements . 19
6.2 Emergency energy supply . 20
6.3 Approach to protection against inadmissible operating modes . 20
6.4 Safety-related systems . 21
6.5 Injection station emergency shut-off . 22
6.6 Protections against inadmissible operation modes by safety-related systems . 22
7 Specific requirements for systems and components . 23
7.1 Common requirements . 23
7.2 Systems . 24
7.3 Components . 28
8 Building and layout requirement . 30
8.1 General . 30
8.2 Indoor Housing . 31
8.3 Outdoor Installation . 32
9 Electrical requirements . 33
9.1 Electrical equipment . 33
9.2 Electrical resistance of floor coverings . 33
9.3 Cable ducts . 33
9.4 Isolating joints . 33
9.5 Lightning protection and equipotential bonding . 33
10 Testing . 34
10.1 General requirements . 34
10.2 Tests carried out by the manufacturer . 34
10.3 Tests at the place of installation . 34
10.4 Testing of electrical systems and equipment . 36
10.5 Proof of testing . 36
11 Commissioning . 37
2

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12 Operation and maintenance . 37
12.1 General . 37
12.2 Data . 37
12.3 Maintenance, modifications and repair . 38
12.4 Training . 39
12.5 Work undertaken . 39
12.6 Fire fighting . 39
13 Decommissioning and disposal . 39
13.1 Decommissioning . 39
13.2 Disposal . 40
Annex A (informative) Potential coordination requirements between station operators . 41
Annex B (informative) Compression system specification data sheet . 42
Annex C (normative) Test schedule . 44
Annex D (normative) Test ratings in accordance with Clause 11 . 48
Annex E (normative) Refeeding station . 49
Annex F (normative) Mitigation of the impact of earthquakes . 50
Annex G (informative) Typical Gas Mixing Plants — Examples . 51
Annex H (informative) Categories of methane emissions in the scope of this document . 55
Bibliography . 56

3

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European foreword
This document (prEN 17928-1:2023) has been prepared by Technical Committee CEN/TC 234 “Gas
infrastructure”, the secretariat of which is held by DIN.
This document is a currently submitted to the CEN Enquiry.
This document is part of the EN 17928 series, Gas infrastructure — Injection stations, which includes the
following parts:
— Part 1: General requirements
— Part 2: Specific requirements regarding the injection of biomethane
— Part 3: Specific requirements regarding the injection of hydrogen fuel gas
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1 Scope
This document establishes the functional requirements for stations for the injection of biomethane,
substitute natural gas (SNG) and hydrogen fuel gas into gas transmission and distribution systems
operated with fuel gases (natural gas, biomethane, SNG, hydrogen fuel gas, fuel gas mixtures) in
accordance with European technical rules that ensure the interoperability of systems.
Figure 1 describes the general approach including all the relevant functions that can be installed in
different configurations.

Key
1 injection station – scope of this document
2 gas transmission or distribution system
3 measuring and control station – pressure regulation/ compression/gas mixing / flow control
4 gas analysis and sampling system
5 gas production
6 gas purification/upgrading
7 storage
8 odorization (optional)
9 adjusting gases (optional) (see 7.3)
(a) sampling unit to be connected to process line
Figure 1 — Example of an injection station with gas purification
This document also applies to refeeding stations that feed such gases back into upstream gas supply
networks; see Figure 2.
5

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Key
1 downstream gas transmission or distribution network
2 upstream gas transmission or distribution network
3 refeeding station
Figure 2 — Refeeding station
This document represents the state of the art at the time of its preparation.
This document does not apply to injection stations operating prior to the publication of this document.
This document specifies common basic principles for gas infrastructure. Users of this document are
expected to be aware that more detailed national standards and/or codes of practice can exist 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 national legislation/regulation than in this document,
CEN/TR 13737 (all parts) illustrates these terms.
CEN/TR 13737 (all parts) gives:
— legislation/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 1081, Resilient, laminate and modular multilayer floor coverings - Determination of the electrical
resistance
EN 1594, Gas infrastructure - Pipelines for maximum operating pressure over 16 bar - Functional
requirements
EN 1776, Gas infrastructure - Gas measuring systems - Functional requirements
EN 1998 (all parts), Eurocode 8: Design of structures for earthquake resistance
6

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EN 10204, Metallic products - Types of inspection documents
EN 12007-1, Gas infrastructure - Pipelines for maximum operating pressure up to and including 16 bar -
Part 1: General functional requirements
EN 12186, Gas infrastructure - Gas pressure regulating stations for transmission and distribution -
Functional requirements
EN 12405-1, Gas meters - Conversion devices - Part 1: Volume conversion
EN 12327, Gas infrastructure - Pressure testing, commissioning and decommissioning procedures -
Functional requirements
EN 12732, Gas infrastructure - Welding steel pipework - Functional requirements
EN 13774, Valves for gas distribution systems with maximum operating pressure less than or equal to 16
bar - Performance requirements
EN 14141, Valves for natural gas transportation in pipelines - Performance requirements and tests
EN 14382, Gas safety shut-off devices for inlet pressure up to 10 MPa (100 bar)
EN 16723-1, Natural gas and biomethane for use in transport and biomethane for injection in the natural
gas network - Part 1: Specifications for biomethane for injection in the natural gas network
EN 16726, Gas infrastructure - Quality of gas - Group H
EN 17649:2022, Gas infrastructure - Safety Management System (SMS) and Pipeline Integrity Management
System (PIMS) - Functional requirements
EN ISO 17659, Welding - Multilingual terms for welded joints with illustrations (ISO 17659)
EN 60034-1, Rotating electrical machines - Part 1: Rating and performance
EN 60079-10-1, Explosive atmospheres - Part 10-1: Classification of areas - Explosive gas atmospheres
EN 60079-14, Explosive atmospheres - Part 14: Electrical installations design, selection and erection
EN 60947-5-1, Low-voltage switchgear and controlgear - Part 5-1: Control circuit devices and switching
elements - Electromechanical control circuit devices
EN 61511 (all parts), Functional safety - Safety instrumented systems for the process industry sector
EN 62305 (all parts), Protection against lightning
prEN 17928-2, Gas infrastructure - Injection stations - Part 2: Specific requirements regarding the injection
of biomethane
prEN 17928-3, Gas infrastructure - Injection station - Part 3: Specific requirements regarding the injection
of hydrogen fuel gas
EN ISO 6974 (all parts), Natural gas - Determination of composition and associated uncertainty by gas
chromatography (ISO 6974 (all parts))
7

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EN ISO 9001, Quality management systems - Requirements (ISO 9001)
EN ISO 10715, Natural gas - Sampling guidelines (ISO 10715)
EN ISO 12213 (all parts), Natural gas - Calculation of compression factor (ISO 12213 (all parts))
EN ISO 12944 (all parts), Paints and varnishes - Corrosion protection of steel structures by protective paint
systems (ISO 12944 (all parts))
EN ISO 13849-1, Safety of machinery - Safety-related parts of control systems - Part 1: General principles
for design (ISO 13849-1)
IEC 60364 (all parts), Low-voltage electrical installations
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:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
injection station
umbrella term covering all necessary equipment for the injection of biomethane, substitute natural gas
(SNG) and hydrogen fuel gas into gas transmission and distribution systems, including the site and the
housing
Note 1 to entry: See Figure 1.
3.2
hydrogen fuel gas
gas comprising mainly hydrogen for the injection in gas transmission and distribution networks
Note 1 to entry: For gas properties, reference can be made to ISO 14687.
3.3
biomethane
gas comprising principally methane, obtained from either upgrading of biogas or methanation of bio-
syngas
Note 1 to entry: Composition given in EN 16723-1.
[SOURCE: EN 16723-1:2016]
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3.4
bio-syngas
gas, comprising principally carbon monoxide and hydrogen, obtained from gasification of biomass
[SOURCE: EN 16723-1:2016]
3.5
substitute natural gas
SNG
gas which is interchangeable in its properties with natural gas
Note 1 to entry: Substitute natural gas is also called synthetic natural gas.
3.6
gas mixture
blend of two or more gases, e.g. natural gas and hydrogen
3.7
refeeding station
station for feeding of gas back into upstream gas supply networks
3.8
monitoring and control devices
process measuring and control technology devices designed for the operation of the station as intended
Note 1 to entry: Such equipment is used for automation functions such as instrumentation and control, signalling,
recording, etc.
3.9
gas infrastructure
pipeline system including pipework and their associated stations for the transmission and distribution
of gas
Note 1 to entry: An injection station is part of the gas infrastructure.
3.10
odorization
addition of odorants to gas (normally odourless) to allow gas leaks to be recognized by smell at trace
levels (before accumulating to dangerous concentrations in air)
[SOURCE: EN 16723-1:2016]
3.11
protective measure
means used to reduce risk
Note 1 to entry: Protective measures include risk reduction by inherently safe design, protective devices,
personal protective.
[SOURCE: ISO/IEC Guide 51:2014, 3.8]
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3.12
risk
product of the damage which will be caused by a potential accident and its probability
[SOURCE: ISO/TR 15916]
3.13
hazard
anything which is a source of potential loss of inventory or damage of the gas infrastructure
[SOURCE: EN 17649:2022, 3.5]
3.14
safety
condition of the gas infrastructure being acceptable for the population, for the environment and for the
continuity of supply ensured by the adoption of adequate measures in the design, construction, operation,
maintenance and abandonment of the gas infrastructure
[SOURCE: EN 17649:2022, 3.8]
3.15
leak
hole or crack through which a liquid or gas can flow out of a container, or the liquid or gas that comes out
3.16
safety function
function to be implemented by an electrical/electronic/programmable electronic system E/E/PE or
mechanical/pneumatic safety-related system or other risk reduction measures, that is intended to
achieve or maintain a safe state for the Equipment Under Control (EUC), in respect of a specific hazardous
event
EXAMPLE Examples of safety functions include:
— functions that are required to be carried out as positive actions to avoid hazardous situations (for
example switching off a motor); and
— functions that prevent actions being taken (for example preventing a motor starting).
[SOURCE: EN 61508-4:2010, 3.5.1]
3.17
Equipment Under Control
EUC
machinery, apparatus or plant used for processing, transportation or other activities which Parameter
Under Control (PUC) are regularly supervised
Note 1 to entry: In the case of this document, the EUC is the complete downstream system.
Note 2 to entry: For further details, see EN 61508-4:2010, 3.2.3.
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3.18
Parameter Under Control
PUC
parameter which is continuously controlled and necessary to ensure safety and operation of the
Equipment Under Control (EUC)
Note 1 to entry: For further details, see EN 61508.
3.19
safety system
designated system that:
— implements the required safety functions necessary to achieve or maintain a safe state for the
Equipment Under Control (EUC); and
— safely prevents any process parameters to exceed the permissible tolerances; and
— is intended to achieve, on its own or with other safety-related systems and other risk reduction
measures, the necessary safety integrity for the required safety function
Note 1 to entry: For further details, see EN 61508-4:2010, 3.4.1.
Note 2 to entry: The term refers to those systems, designated as safety-related systems, that are intended to
achieve, together with the other risk reduction measures.
3.20
Safety Instrumented System
SIS
instrumented system used to implement one or more safety instrumented functions
Note 1 to entry: An SIS is composed of any combination of sensor(s), logic solver(s), and final element(s) (see
EN 61511-1:2017, 3.2.67).
Note 2 to entry: A Safety Instrumented System is equivalent to a safety-related system, which is defined under
EN 61508-4.
[SOURCE: EN 50495:2010, 3.5]
3.21
mechanical safety system
system used to implement one or more safety-related functions
Note 1 to entry: Such devices operate without energy from external sources (e.g. safety shut-off valves, spring-
loaded safety relief valves).
3.22
limiter
protection device that switches off processes that influence the corresponding limiting value if they
exceed or fall short of a fixed limit value and locks these processes against automatic switching on
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3.23
gas compression system
system designed to boost the pressure of gaseous media
Note 1 to entry: The system comprises all types such as fans, compressors, etc., including relevant control and
safety systems.
3.24
competent person
person who is trained and experienced to perform activities related to injection stations
Note 1 to entry: National regulations can apply regarding the qualification of the person.
3.25
authorized person
competent person who is appointed to fulfil a given task on injection stations
Note 1 to entry: The appointment procedure is defined in each member country.
3.26
gas mixer
blender
device used to mix two or more technical gases which is available in various versions for different gas
combinations and different flow rates; depending on the requirements, mechanical, diffusion-mixing or
mass flow-controlled mixing systems are used
3.27
adjusting gases
gases additionally injected in order to adjust gas properties
Note 1 to entry: E.g. for gas billing according to national regulations.
4 General requirements
4.1 General
The design, manufacture, construction, testing, commissioning, and operation of stations shall be in
accordance with the acknowledged rules of technology and the applicable regulatory requirements and
stipulations. Stations shall be designed and constructed to have a clear layout and shall be accessible and
easy to operate, always taking into account operational and maintenance requirements.
The appropriate specifications for gases injected into the gas network shall be observed:
— for the injection of SNG, EN 16726 shall apply;
— for the injection of biomethane, EN 16723-1 shall apply.
NOTE There is currently no specification for hydrogen to be injected into the gas infrastructure, whether as a
blend with natural gas or into a hydrogen fuel gas network.
The applicable requirements on refeeding stations are given in Annex E.
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4.2 Quality and management system
The life of a station can be divided into four phases:
1) design;
2) construction, testing and commissioning;
3) operation and maintenance;
4) decommissioning and disposal.
The full life expectancy of the consequences of each of the four phases shall be considered. The full life
expectancy of a component shall be used to determine the relevant timeframes to be assessing climate
change aspects that could affect it.
A quality and management system shall be applied in accordance with this document, which includes
these four phases. Reference shall be made to EN 17649 or EN ISO 9001 or equivalent quality system
standards.
Standardized safety design rules on pressure regulation stations shall be incorporated and documented
in the quality or management system.
4.3 Environmental constraints
4.3.1 General requirements
Energy conserving approaches should also be considered in order to reduce emissions.
Consideration should be given to the requirements of EN ISO 14001, EN ISO 14090 and EN ISO 50001.
NOTE 1 Requirements for the mitigation of environmental issues are detailed in the relevant specific system
standards (e.g. EN 12186, EN 1776).
It should be verified if the site is a protected area in terms of noise, ground water, proximity of dwellings
and other relevant aspects specific to minimizing the impact on the surroundings.
The compatibility of the materials should be considered to minimize the environmental impact of the
building.
Particular measures are to be taken to minimize emissions to air at the commissioning stage and during
maintenance/repair operations. Furthermore, the gas used for purging (air, nitrogen or other) should be
chosen with regard to the possible impact around the site.
At the stage of planning and designing, adequate procedure for assembling/commissioning/
decommissioning should be fo
...

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