EN ISO 16923:2018

Natural gas fuelling stations - CNG stations for fuelling vehicles (ISO 16923:2016)

ISO 16923:2016 covers the design, construction, operation, inspection and maintenance of stations for fuelling compressed natural gas (CNG) to vehicles, including equipment, safety and control devices.
ISO 16923:2016 also applies to portions of a fuelling station where natural gas is in a gaseous state and dispensing CNG derived from liquefied natural gas (LCNG) according to ISO 16924.
ISO 16923:2016 applies to fuelling stations supplied with natural gas as defined in local applicable gas composition regulations or ISO 13686. It also applies to other gases meeting these requirements including biomethane, upgraded coal-bed methane (CBM) and gas supplies coming from LNG vaporization (on-site or off-site).
ISO 16923:2016 includes all equipment for downstream gas supply connection (i.e. point of separation between the CNG fuelling station piping and the pipeline network). Fuelling station nozzles are not defined in this document.
ISO 16923:2016 covers fuelling stations with the following characteristics:
-      slow fill;
-      fast fill;
-      private access;
-      public access (self-service or assisted);
-      fuelling stations with fixed storage;
-      fuelling stations with mobile storage (daughter station);
-      multi-fuel stations.
ISO 16923:2016 is not applicable to domestic CNG fuelling devices without buffer storage.
NOTE          ISO 16923:2016  is based on the condition that the gas entering the fuelling station is odorized. For unodorized gas fuelling stations, additional safety requirements are included in Clause 10.

Erdgastankstellen - CNG-Tankstellen zur Betankung von Fahrzeugen (ISO 16923:2016)

Dieses Dokument behandelt den Entwurf, die Konstruktion, den Betrieb, die Inspektion und die Instandhaltung von Tankstellen zur Betankung von Fahrzeugen mit komprimiertem Erdgas (CNG, en: compressed natural gas) einschließlich Ausrüstung, Sicherheit und Steuer- und Regelvorrichtungen.
Es gilt auch für Teile einer Tankstelle, wo sich das Erdgas in einem gasförmigen Zustand befindet und komprimiertes Erdgas (CNG) abgegeben wird, das nach ISO 16924 von verflüssigtem Erdgas (LCNG, en: liquefied compressed natural gas) abgeleitet wurde.
Dieses Dokument gilt für Tankstellen, die mit Erdgas ausgestattet sind, wie in den anwendbaren örtlichen Bestimmungen über die Gaszusammensetzung oder wie in ISO 13686 festgelegt. Es gilt ebenfalls für andere Gase, die diese Anforderungen erfüllen, einschließlich Biomethan, aufbereitetes Kohleflöz-Methan (CBM, en: coal-bed methane) und Gas aus der Verdampfung von LNG (vor Ort oder im Werk).
Dieses Dokument umfasst die gesamte Ausrüstung für die nachgelagerte Gasversorgungsleitung (d. h. den Trennungspunkt zwischen den Rohrleitungen der CNG-Tankstelle und dem Rohrleitungs-Netzwerk). Füllkupplungen von Tankstellen sind in diesem Dokument nicht festgelegt.
Dieses Dokument behandelt Tankstellen mit den folgenden Eigenschaften:
   langsame Betankung;
   schnelle Betankung;
   privater Zugang;
   öffentlicher Zugang (Selbstbedienung oder mit Tankwart-Service);
   Tankstellen mit fest installierter Speicherung;
   Tankstellen mit mobiler Speicherung (Tochtertankstelle);
   Multikraftstoff-Tankstellen.
Dieses Dokument gilt nicht für CNG-Betankungseinrichtungen im häuslichen Bereich ohne Zwischenspeicher.
ANMERKUNG   Dieses Dokument basiert auf der Bedingung, dass das der Tankstelle gelieferte Gas odoriert ist. Für Tankstellen mit nicht odoriertem Gas sind zusätzliche Sicherheitsanforderungen in Abschnitt 10 enthalten.

Stations-service de gaz naturel - Stations GNC pour le ravitaillement de véhicules (ISO 16923:2016)

L'ISO 16923:2016 traite de la conception, la construction, l'exploitation, l'inspection et la maintenance des stations de ravitaillement au gaz naturel comprimé (GNC) pour véhicules, dont les appareils et les dispositifs de sécurité et de contrôle.
L'ISO 16923:2016 s'applique également aux parties d'une station-service où le gaz naturel se trouve à l'état gazeux et où le GNC dérivé d'un gaz naturel liquéfié (GNCL) est distribué conformément à l'ISO 16924.
L'ISO 16923:2016 s'applique aux stations-service alimentées par gaz naturel tel que défini par les règlements locaux applicables relatifs à la composition des gaz ou par l'ISO 13686. Elle s'applique également à d'autres gaz satisfaisant à ces exigences tels que le biométhane, le méthane de houille (MH) valorisé et les gaz provenant de la vaporisation de GNL (sur ou hors site).
L'ISO 16923:2016 couvre tous les appareils en aval de la connexion d'alimentation en gaz (c'est-à-dire le point de séparation entre les conduites de la station-service GNC et le réseau de canalisations). Les pistolets de distribution des stations-service ne sont pas définis dans ce document.
L'ISO 16923:2016 comprend les stations-service avec les caractéristiques suivantes:
- remplissage lent;
- remplissage rapide;
- accès privé;
- accès public (self-service ou avec assistance);
- stations-service avec stockage fixe;
- stations-service avec stockage mobile (station secondaire);
- stations multi-carburants.
L'ISO 16923:2016 ne s'applique pas aux dispositifs domestiques de ravitaillement de GNC sans stockage tampon.
NOTE       L'ISO 16923:2016 repose sur la condition que les gaz fournis à la station-service sont odorisés. Pour les stations-service utilisant des gaz non odorisés, des exigences de sécurité supplémentaires sont spécifiées à l'Article 10.

Polnilne postaje za oskrbo z zemeljskim plinom - Postaje za oskrbo vozil s stisnjenim zemeljskim plinom (ISO 16923:2016)

Standard ISO 16923:2016 zajema projektiranje, izgradnjo, obratovanje, nadzor in vzdrževanje polnilnih postaj za oskrbo vozil s stisnjenim zemeljskim plinom (CNG), vključno z opremo ter varnostnimi in krmilnimi napravami.
Standard ISO 16923:2016 se uporablja tudi za predele polnilnih postaj, v katerih je zemeljski plin v plinastem stanju in se vozila polnijo s stisnjenim zemeljskim plinom, ki izhaja iz utekočinjenega zemeljskega plina (LCNG) v skladu s standardom ISO 16924.
Standard ISO 16923:2016 se uporablja za polnilne postaje z zemeljskim plinom, kot je določeno v lokalnih veljavnih predpisih o sestavi plina ali standardu ISO 13686. Uporablja se tudi za druge pline, ki ustrezajo tem zahtevam, vključno z biometanom, nadgrajenim premogovnim metanom (CBM) in oskrbo s plinom, pridobljenim z uparjanjem tekočega zemeljskega plina (na mestu uporabe ali drugje).
Standard ISO 16923:2016 vključuje vso opremo za plinski priključek (npr. od točke ločitve cevovoda polnilne postaje s stisnjenim zemeljskim plinom od cevovodnega omrežja). Ta dokument ne določa šob polnilnih postaj.
Standard ISO 16923:2016 vključuje polnilne postaje z naslednjimi lastnostmi:
– s počasnim dovodom goriva;
– s hitrim dovodom goriva;
– z zasebnim dostopom;
– z javnim dostopom (samopostrežne ali ne);
– polnilne postaje s fiksnim rezervoarjem;
– polnilne postaje z mobilnim rezervoarjem (hčerinska postaja);
– postaje z različnimi vrstami plina.
Standard ISO 16923:2016 se ne uporablja za hišne polnilne postaje s stisnjenim zemeljskim plinom brez rezervoarja za začasno skladiščenje.
OPOMBA: ISO 16923:2016 temelji na pogoju, da ima plin, ki vstopa v polnilno postajo, vonj. Za polnilne postaje za oskrbo s plinom brez vonja veljajo dodatne zahteve za varnost, ki so vključene v točki 10.

General Information

• Status: Published
• Publication Date: 03-Apr-2018
• Withdrawal Date: 30-Oct-2018
• ICS: 75.200 - Petroleum products and natural gas handling equipment
• Technical Committee: CEN/TC 326 - Gas supply for Natural Gas Vehicles (NGV)
• Drafting Committee: CEN/TC 326/WG 1 - NGV filling stations
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 04-Apr-2018
• Due Date: 30-Nov-2019
• Completion Date: 04-Apr-2018
• Directive: 2014/94/EU - Directive 2014/94/EU of The European Parliament and of The Council of 22 October 2014 on the deployment of alternative fuels infrastructure
• Mandate: M/533 - [C(2015)1330] Standardisation request addressed to CEN, CENELEC and ETSI in support of the implementation of the Directive 2014/94/EU on the deployment of alternative fuels infrastructure
• Ref Project: SIST EN ISO 16923:2018 - Natural gas fuelling stations - CNG stations for fuelling vehicles (ISO 16923:2016)

Standards Content (Sample)

SLOVENSKI STANDARD
01-junij-2018
Polnilne postaje za oskrbo z zemeljskim plinom - Postaje za oskrbo vozil s
stisnjenim zemeljskim plinom (ISO 16923:2016)
Natural gas fuelling stations - CNG stations for fuelling vehicles (ISO 16923:2016)
Erdgastankstellen - CNG-Tankstellen zur Betankung von Fahrzeugen (ISO 16923:2016)
Stations-service de gaz naturel - Stations GNC pour le ravitaillement de véhicules (ISO
16923:2016)
Ta slovenski standard je istoveten z: EN ISO 16923:2018
ICS:
75.200 2SUHPD]DVNODGLãþHQMH Petroleum products and
QDIWHQDIWQLKSURL]YRGRYLQ natural gas handling
]HPHOMVNHJDSOLQD equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 16923
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2018
EUROPÄISCHE NORM
ICS 75.200
English Version
Natural gas fuelling stations - CNG stations for fuelling
vehicles (ISO 16923:2016)
Stations-service de gaz naturel - Stations GNC pour le Erdgastankstellen - CNG-Tankstellen zur Betankung
ravitaillement de véhicules (ISO 16923:2016) von Fahrzeugen (ISO 16923:2016)
This European Standard was approved by CEN on 26 January 2018.

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, 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
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 16923:2018 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Annex A (informative) A-deviation . 5

European foreword
The text of ISO 16923:2016 has been prepared by ISO/TMBG “Technical Management Board - groups”
of the International Organization for Standardization (ISO) and has been taken over as
Operation” the secretariat of which is held by NEN.
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 2018, and conflicting national standards shall
be withdrawn at the latest by October 2018.
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 has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
This document has been prepared under the standardization request M/533 given to CEN by the
European Commission and the European Free Trade Association in the framework of
Directive 2014/94/EU on the deployment of alternative fuels infrastructure.
The standardization request M/533 focuses on interoperability aspects of the alternative fuels
infrastructure, which for CNG fuelling stations are covered in this document by the following items:
— Fuelling pressure (service pressure): This document applies a fuelling pressure of 20,0 MPa gauge
(200 bar) at 15 °C. This document allows possible higher fuelling pressures if the necessary
requirements as provided are met accordingly. When adopting the fuelling pressure of 20,0 MPa at
15 °C, the maximum fuelling pressure can be 26,0 MPa with “temperature compensation”.
— Connector profile: The harmonized connector profile is described in EN ISO 14469:2017, that
specifies CNG refuelling nozzles and receptacles constructed entirely of new and unused parts and
materials, for road vehicles powered by CNG, and which is referenced in this document as well as
included in UN/ECE Regulation N° 110. EN ISO 14469:2017 refers to fuelling pressures of 20 MPa
and 25 MPa for both "size 1" (B200 and B250) and "size 2" (C200 and C250).
In addition to interoperability aspects, the following aspects are relevant for applying this document in
Europe:
— Fuel quality: The quality of CNG for use as automotive fuel is covered in EN 16723-2:2017, that
specifies the requirements and test methods for natural gas, biomethane and blends of both.
— Fuel labelling: The fuel label for CNG at dispensers is covered by EN 16942:2016, that lays down
harmonized identifiers for marketed liquid and gaseous fuels, and which has also been developed
to support Directive 2014/94/EU.
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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 16923:2016 has been approved by CEN as EN ISO 16923:2018 without any modification.

Annex A
(informative)
A-deviation
A-deviation: National deviation due to regulations, the alteration of which is for the time being outside
the competence of the CEN-CENELEC national member.
This European Standard does not fall under any Directive of the EU.
In the relevant CEN-CENELEC countries these A-deviations are valid instead of the provisions of the
European Standard until they have been removed.
Country Clause Deviation
ITALY Annex B (normative) According to Italian legislation concerning rules of fire
Separation distances prevention for the design, construction and operation
of stations for fuelling compressed natural gas (CNG)

to vehicles, the internal safety distances are higher
B.3 Internal Separation
than those prescribed in the standard
distances, Table B.1 –
th
Ministerial Decree of 24 May 2002 (published on the
Internal separation
Official Journal of the Italian Republic n. 131 of
distances
th
6 June 2002), as amended by Ministerial Decree of
28th June 2002 (published on the Official Journal of
th
the Italian Republic n. 161 of 11 July 2002)

INTERNATIONAL ISO
STANDARD 16923
First edition
2016-12-15
Natural gas fuelling stations — CNG
stations for fuelling vehicles
Stations-service de gaz naturel — Stations GNC pour le ravitaillement
de véhicules
Reference number
ISO 16923:2016(E)
©
ISO 2016
ISO 16923:2016(E)
© ISO 2016, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
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ii © ISO 2016 – All rights reserved

ISO 16923:2016(E)
Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols and abbreviated terms . 8
4.1 Symbols . 8
4.2 Abbreviated terms . 8
5 Risk management . 8
6 General design requirements . 9
6.1 General . 9
6.2 Site layout .10
6.3 Pressure safety relief valves and venting .10
7 Fuel supply to the fuelling station .11
7.1 Supply by pipeline .11
7.2 Supply by mobile storage .11
8 Dryer .12
9 Compressors .12
9.1 General .12
9.2 Instrumentation and control .13
9.3 Crankcase design .13
9.4 Compressor enclosures, buildings and canopies .14
9.5 Underground compressor installations .16
9.6 Hazardous area classification.16
10 Buffer storage .16
11 Dispensers .17
11.1 General requirements .17
11.2 Breakaway devices .17
11.3 Fuelling hose assemblies .
...