CEN/TR 17797:2022
(Main)Gas infrastructure - Consequences of hydrogen in the gas infrastructure and identification of related standardisation need in the scope of CEN/TC 234
Gas infrastructure - Consequences of hydrogen in the gas infrastructure and identification of related standardisation need in the scope of CEN/TC 234
This document is written in preparation of future standardization and provides guidance on the
impact of the injection of H2 into the gas infrastructure from the input of gas into the onshore
transmission network up to the inlet connection of gas appliances.
Furthermore, it identifies the expected revision need of the existing CEN/TC 243 standards as
well as the need of further new standardisation deliverables.
It examines the effects on each part of the gas infrastructure in the scope of the CEN/TC 234
Working Groups 1 to 12 inclusive, based on available studies, reports and research. Due to
several limitations at different hydrogen concentrations, the impacts are specified.
For some specific impact, prestandardization research is needed.
By convention, for this technical report, the injection of pure hydrogen, i. e. without trace
components is considered.
The information from this report is intended to define the CEN/TC 234 work program for the
coverage of H2NG in relation to the scope of the CEN/TC 234 and its WGs.
NOTE Progress on hydrogen will develop over time. In principle this will be reflected in the
standardisation process in CEN/TC 234.
Gasinfrastruktur - Auswirkungen von Wasserstoff in der Gasinfrastruktur und Identifikation des zugehörigen Normungsbedarfs im Zuständigkeitsbereich des CEN/TC 234
Infrastructure gazière Consequences d'hydrogen dans l'infrastructure gazière et l'identification des besoins relatifs à la normalisation dans le domaine d'application de CEN/TC 234
Infrastruktura za plin - Posledice zaradi vodika v infrastrukturi za plin in ugotavljanje s tem povezanih potreb po standardizaciji na področju CEN/TC 234
Ta dokument je oblikovan kot priprava na prihodnjo standardizacijo in vsebuje smernice o vplivu vbrizgavanja vodika v infrastrukturo za plin od točke vnosa plina v kopensko
plinovodno omrežje do točke vstopnega priključka plinskih naprav.
Poleg tega opredeljuje pričakovane potrebe po reviziji obstoječih standardov CEN/TC 243
ter potrebo po nadaljnjih novih standardizacijskih dokumentih.
Na podlagi razpoložljivih študij, poročil in raziskav preučuje učinke na vsak del infrastrukture za plin v okviru delovnih skupin CEN/TC 234 od 1 do vključno 12. Zaradi več omejitev pri različnih koncentracijah vodika so vplivi določeni.
Za nekatere posebne vplive so pred standardizacijo potrebne raziskave.
Po dogovoru se v tem tehničnem poročilu obravnava vbrizgavanje čistega vodika, torej
brez sestavin v sledovih.
Informacije iz tega poročila so namenjene opredelitvi delovnega programa CEN/TC 234 za zajetje H2NG glede na področje uporabe CEN/TC 234 in njegovih delovnih skupin.
OPOMBA: Napredek na področju vodika bo potekal postopoma. Načeloma se bo to odražalo v postopku standardizacije v CEN/TC 234.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2022
Infrastruktura za plin - Posledice zaradi vodika v infrastrukturi za plin in
ugotavljanje s tem povezanih potreb po standardizaciji na področju CEN/TC 234
Gas infrastructure - Consequences of hydrogen in the gas infrastructure and
identification of related standardisation need in the scope of CEN/TC 234
Gasinfrastruktur - Auswirkungen von Wasserstoff in der Gasinfrastruktur und
Identifikation des zugehörigen Normungsbedarfs im Zuständigkeitsbereich des CEN/TC
Infrastructure gazière Consequences d'hydrogen dans l'infrastructure gazière et
l'identification des besoins relatifs à la normalisation dans le domaine d'application de
CEN/TC 234
Ta slovenski standard je istoveten z: CEN/TR 17797:2022
ICS:
01.120 Standardizacija. Splošna Standardization. General
pravila rules
75.180.01 Oprema za industrijo nafte in Equipment for petroleum and
zemeljskega plina na splošno natural gas industries in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
CEN/TR 17797
TECHNICAL REPORT
RAPPORT TECHNIQUE
March 2022
TECHNISCHER BERICHT
ICS 01.120; 75.180.01
English Version
Gas infrastructure - Consequences of hydrogen in the gas
infrastructure and identification of related standardisation
need in the scope of CEN/TC 234
Infrastructure gazière - Consequences d'hydrogen dans Gasinfrastruktur - Auswirkungen von Wasserstoff in
l'infrastructure gazière et l'identification des besoins der Gasinfrastruktur und Identifikation des
relatifs à la normalisation dans le domaine zugehörigen Normungsbedarfs im
d'application de CEN/TC 234 Zuständigkeitsbereich des CEN/TC 234
This Technical Report was approved by CEN on 24 January 2022. It has been drawn up by the Technical Committee CEN/TC 234.
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, Turkey 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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TR 17797:2022 E
worldwide for CEN national Members.
Contents Page
European foreword . 5
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and abbreviations . 7
3.1 Terms and definitions . 7
3.2 Symbols and abbreviations . 10
4 Executive summary . 10
5 General considerations for the entire gas infrastructure . 12
5.1 Explosion protection and prevention . 12
5.1.1 General principles . 12
5.1.2 Safety characteristics of natural gas-hydrogen mixtures and their impact on
explosion prevention. 13
5.1.3 Consequences of H2 and H2NG in NG infrastructure for explosion protection related
to identified H concentrations . 14
5.2 N NG mixtures in contact with materials — Pressure integrity, gas tightness and
functionality . 15
5.2.1 General. 15
5.2.2 Steel. 18
5.2.3 PE and PA-U . 26
5.2.4 Alloys . 26
5.2.5 Information on deterioration and chemical aggression of elastomers. 26
5.2.6 Others . 26
5.3 Volume in relation to energy content — consequences for the capacity and function
of the gas transportation, underground gas storage and distribution system. 26
6 Technical considerations per topic applicable for the different parts of the gas
infrastructure (along chain) . 27
6.1 General. 27
6.2 Gas quality . 27
6.2.1 Scope of considerations — Gas quality — EN 16726 . 27
6.2.2 Technical considerations — Identified H NG . 28
6.3 Gas compression . 33
6.3.1 Scope of consideration — Gas compression . 33
6.3.2 Technical considerations — Identified H NG aspects — Gas compression . 34
6.4 Gas pipelines with MOP over 16 bar — Gas transmission . 34
6.4.1 Scope of consideration — Gas transmission — EN 1594 . 34
6.4.2 Hydrogen piping and pipelines — ASME B31.12 . 34
6.4.3 Technical considerations — Identified H NG aspect — Gas transmission . 35
6.5 Gas pressure control . 38
6.5.1 Scope of consideration — Gas pressure control — EN 12186 and EN 12279 . 38
6.6 Gas metering . 39
6.6.1 Scope of consideration — Gas metering — EN 1776 . 39
6.6.2 Technical considerations — Identified H2NG aspects — Gas metering . 39
6.7 Gas supply systems up to and including 16 bar and pressure testing . 40
6.7.1 Statement for gas pipelines with MOP up to and including 16 bar for all
concentrations . 40
6.7.2 Requalifying existing pipelines for hydrogen service . 41
6.7.3 Technical consideration — Scoping considerations — EN 2007-1 to -4,
CEN/TS 12007-6, EN 12327 and EN 12732 . 41
6.8 Service lines . 45
6.8.1 Scoping considerations — Service lines — EN 12007-5 . 45
6.8.2 Technical considerations — Identified H NG aspects integrity and safety, reliability
and operation . 46
6.9 Industrial piping . 47
6.9.1 Scope of consideration – Industrial piping – EN 15001-1 and EN 15001-2 . 47
6.9.2 Technical considerations — Industrial piping . 48
6.10 Gas pipework for buildings . 49
6.10.1 Scope of consideration — Gas pipework for buildings – EN 1775 . 49
6.10.2 Technical considerations — Gas pipework for buildings . 49
6.11 Underground gas storage . 49
6.11.1 Scope of consideration for underground gas storage — Generals EN 1918-1 to -5. 49
6.11.2 Technical considerations — Underground gas storage . 50
6.11.3 Identified H2NG impacts — Underground gas storage . 51
6.12 Safety management and integrity management. 52
6.12.1 Scope of considerations . 52
6.12.2 Safety management system — Management of change . 52
6.12.3 Pipeline integrity management system . 53
7 Conclusions — H suitability of components, materials and procedures used in the
gas infrastructure related to identified H concentrations . 54
7.1 General . 54
7.2 H suitability —Gas quality . 55
7.2.1 H-gas quality – Admixture of H . 55
7.2.2 Hydrogen quality in converted natural gas grids . 56
7.3 H suitability — Gas compressor stations . 57
7.3.1 General . 57
7.3.2 Less than 1 % hydrogen in natural gas . 58
7.3.3 Over 1 Vol.-% up to 5 Vol.-% H in natural gas . 58
7.4 H suitability — Gas transmission pipelines with MOP over 16 bar . 61
7.5 H suitability — Gas pressure control . 62
7.5.1 Introduction . 62
7.5.2 General . 63
7.5.3 Up to 10 Vol.-% H in natural gas . 63
7.5.4 Over 10 Vol.-% up to 100 % H in natural gas . 64
7.6 H suitability — Gas metering . 65
7.7 H suitability — Gas pipelines with MOP up to and including 16 bar . 65
7.7.1 A Summary of findings for gas pipeline systems up to and including 16 bar and
pressure testing (CEN/TC 234 WG 2) . 65
7.8 H suitability — Service lines . 66
7.9 H suitability — Industrial piping . 66
7.10 H suitability — Gas pipework for buildings . 67
7.11 H2 suitability — Underground gas storage . 67
7.11.1 Between 0 % and 1 % hydrogen in natural gas .
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