EN 13423:2021

SLOVENSKI STANDARD
01-maj-2021
Nadomešča:
SIST EN 13423:2001
Vozila na zemeljski plin - Zahteve za delavnice za vozila na zemeljski plin in
upravljanje vozil na stisnjeni zemeljski plin
Natural gas vehicles - Requirements for NGV workshops and the management of
compressed natural gas (CNG) vehicles
Erdgasfahrzeuge - Anforderungen an Werkstätten und an den Umgang von mit
komprimiertem Erdgas (CNG) betriebenen Fahrzeugen
Exploitation de véhicules fonctionnant au gaz naturel - Exigences relatives aux ateliers
pour véhicules GNV et à la gestion des véhicules fonctionnant au gaz naturel comprimé
(GNC)
Ta slovenski standard je istoveten z: EN 13423:2021
ICS:
43.180 Diagnostična, vdrževalna in Diagnostic, maintenance and
preskusna oprema test equipment
75.060 Zemeljski plin Natural gas
75.200 Oprema za skladiščenje Petroleum products and
nafte, naftnih proizvodov in natural gas handling
zemeljskega plina equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 13423
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2021
EUROPÄISCHE NORM
ICS 43.020; 43.180; 75.200 Supersedes EN 13423:2000
English Version
Natural gas vehicles - Requirements for NGV workshops
and the management of compressed natural gas (CNG)
vehicles
Exploitation de véhicules fonctionnant au gaz naturel - Erdgasfahrzeuge - Anforderungen an Werkstätten und
Exigences relatives aux ateliers pour véhicules GNV et an den Umgang von mit komprimiertem Erdgas (CNG)
à la gestion des véhicules fonctionnant au gaz naturel betriebenen Fahrzeugen
comprimé (GNC)
This European Standard was approved by CEN on 20 December 2020.

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, 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
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13423:2021 E
worldwide for CEN national Members.

Contents                                                          Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 General provisions . 10
5 NGV workshop activities . 11
6 NGV workshop risk management . 11
6.1 Procedure . 11
6.2 Risk context . 11
6.3 Risk assessment . 12
6.4 Risk treatment . 12
6.5 Risk monitoring and review . 12
6.6 Risk documentation . 12
7 NGV workshop planning . 12
7.1 Tools and equipment . 12
7.2 Security measures . 13
7.3 Emergency planning . 13
8 NGV workshop occupants . 13
8.1 General safety . 13
8.2 NGV workshop mechanics/technicians . 13
8.3 Training . 13
8.4 Qualification . 14
9 NGV workshop layout . 14
9.1 Designated areas . 14
9.2 Marking of areas . 14
9.3 Hazardous areas . 14
9.4 Warning signs and notices . 14
9.5 General atmosphere . 14
9.6 Increased hazards . 15
10 NGV workshop systems . 15
10.1 Air compressor system . 15
10.2 Fire protection system . 15
10.3 Gas detection system . 16
10.4 Heat and lighting system . 16
10.5 Measurement system . 16
10.6 Mechanical ventilation system . 16
11 NGV workshop operations. 16
11.1 Documentation . 16
11.2 Gas leak management . 17
Annex A (normative) Management of NGVs . 18
Annex B (normative) Management of cylinders . 22
Annex C (informative) Natural gas characteristics . 26
Annex D (informative) NGV workshop tools and equipment . 28
Bibliography . 30

European foreword
This document (EN 13423:2021) has been prepared by Technical Committee CEN/TC 326 “Natural gas
vehicles – Fuelling and operation”, the secretariat of which is held by NEN and TSE.
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 August 2021, and conflicting national standards shall be
withdrawn at the latest by August 2021.
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 13423:2000.
In comparison with the previous edition, the following changes have been included:
— the introduction of minimum requirements instead of recommendations to professionals how to
safely operate vehicles that use compressed natural gas (CNG) as a fuel for propulsion, covering
various aspects of NGV workshops;
— the scope of the document has been expanded by not only addressing the NGV owner and user, but
also other parties dealing with NGVs. These changes are reflected in the Introduction and Scope of
this document and the new aspects have been introduced in the relevant clauses of this document;
— developments and best practices since the publication of the first edition have been taken into
account, also to improve understanding and implementation of this document by the intended user;
— a new Annex is introduced that provides minimum requirements for the user manual of NGVs to be
provided by the OEM or system manufacturer.
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, Turkey and the United
Kingdom.
Introduction
This document addresses NGV workshops and the management of compressed natural gas (CNG)
vehicles. This document can be a useful reference for:
— NGV workshop architects;
— NGV workshop owners;
— NGV workshop staff;
— OEMs;
— system manufacturers;
— NGV owners and users;
— NGV dealers;
— local authorities.
1 Scope
This document provides requirements for operation of vehicles that use compressed natural gas (CNG)
as a fuel for propulsion, covering various aspects of NGV workshops including activities, risk
management, planning, personnel, layout, systems and operations. It provides requirements regarding
the management of NGVs including use, parking, fuelling for commissioning, inspection, installation,
repair and maintenance, disposal, transportation and documentation.
This document is applicable to the management of CNG vehicles with a fuel system pressure of 20 MPa
(200 bar) at 15 °C. This document can also be applied to vehicles with higher fuel system pressures, taking
into account additional safety aspects.
This document also applies to servicing, repair and maintenance of NGVs when work is not performed on
the gas fuel system.
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 50402, Electrical apparatus for the detection and measurement of combustible or toxic gases or vapours
or of oxygen — Requirements on the functional safety of gas detection systems
EN 60079-10-1:2015, Explosive atmospheres — Part 10-1: Classification of areas — Explosive gas
atmospheres
EN 60079-29-2, Explosive atmospheres — Part 29-2: Gas detectors — Selection, installation, use and
maintenance of detectors for flammable gases and oxygen
EN ISO 10012, Measurement management systems — Requirements for measurement processes and
measuring equipment (ISO 10012)
ISO 15501-1, Road vehicles — Compressed natural gas (CNG) fuel systems — Part 1: S
...