SIST EN 13423:2021
(Main)Natural gas vehicles - Requirements for NGV workshops and the management of compressed natural gas (CNG) vehicles
Natural gas vehicles - Requirements for NGV workshops and the management of compressed natural gas (CNG) vehicles
This document provides requirements for the operation (“user manual”) of vehicles using CNG (fossil and renewable) as fuel, giving recommendations of good, safe and environmental friendly practices for users, including transit through specific areas (tunnels, ferries, etc.), refuelling, parking, and workshops, and also giving instructions in case of accident. This document also provides requirements concerning competence, knowledge and ability of workshops' operatives as well as any other matter concerned with safety.
Erdgasfahrzeuge - Anforderungen an Werkstätten und an den Umgang von mit komprimiertem Erdgas (CNG) betriebenen Fahrzeugen
Dieses Dokument enthält Anforderungen zum Betrieb von Fahrzeugen, die komprimiertes Erdgas (CNG) als Kraftstoff für den Antrieb verwenden und behandelt hierbei verschiedene Aspekte einschließlich Tätigkeiten, Risikomanagement, Planung, Personal, Aufbau, Systeme sowie Betrieb von Werkstätten für Erdgasfahrzeuge. Es enthält Anforderungen an die Handhabung von Erdgasfahrzeugen, einschließlich Gebrauch, Parken, Befüllung für die Inbetriebnahme, Inspektion, Installation, Reparatur und Instandhaltung, Entsorgung, Transport und Dokumentation.
Dieses Dokument gilt für CNG-Fahrzeuge mit einem Druck im Kraftstoffsystem von 20 MPa (200 bar) bei 15 °C. Unter Berücksichtigung zusätzlicher Sicherheitsaspekte kann dieses Dokument auch für Fahrzeuge mit höherem Druck im Kraftstoffsystem herangezogen werden.
Dieses Dokument ist auch für die Instandhaltung, Reparatur und Wartung von erdgasbetriebenen Fahrzeugen anwendbar, wenn keine Arbeiten am Kraftstoffsystem durchgeführt werden.
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)
Le présent document fournit des exigences relatives à l'utilisation des véhicules fonctionnant au gaz naturel comprimé (GNC) en tant que carburant, et couvre différents aspects des ateliers pour véhicules GNV, notamment les activités, le management du risque, la planification, le personnel, la disposition, les systèmes et l'exploitation. Il fournit des exigences concernant la gestion des véhicules GNV, y compris l’utilisation, le stationnement, le ravitaillement, l’inspection, l’installation, la réparation et la maintenance, l’élimination, le transport et la documentation.
Le présent document s’applique à la gestion des véhicules fonctionnant au GNC avec un système de carburant sous pression de 20 MPa (200 bar) à 15 °C. Le présent document peut également s’appliquer aux véhicules dont le système de carburant est soumis à des pressions plus élevées, en tenant compte d'aspects de sécurité supplémentaires.
Ce document s'applique également à l'entretien, la réparation et la maintenance des véhicules GNV lorsque des travaux ne sont pas effectués sur le système de carburant à gaz.
Vozila na zemeljski plin - Zahteve za delavnice za vozila na zemeljski plin in upravljanje vozil na stisnjeni zemeljski plin
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 13423:2021
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
SIST EN 13423:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 13423:2021
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SIST EN 13423:2021
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.
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SIST EN 13423:2021
EN 13423:2021 (E)
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
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SIST EN 13423:2021
EN 13423:2021 (E)
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
3
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SIST EN 13423:2021
EN 13423:2021 (E)
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.
4
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SIST EN 13423:2021
EN 13423:2021 (E)
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.
5
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SIST EN 13423:2021
EN 13423:2021 (E)
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: Safety requirements
ISO 15501-2, Road vehicles — Compressed natural gas (CNG) fuel systems — Part 2: Test methods
ISO 19078, Gas cylinders — Inspection of the cylinder installation, and requalification of high pressure
cylinders for the on-board storage of natural gas as a fuel for automotive vehicles
ISO 31000, Risk management — Guidelines
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SIST EN 13423:2021
EN 13423:2021 (E)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
authorized qualification body
body, independent of the NGV workshop, authorized by the certification body to prepare and administer
qualification examinations
[SOURCE: EN ISO 9712:2012, 3.1, modified – ‘employer’ has been changed to ‘NGV workshop’.]
3.2
CNG system
assembly of components (cylinder(s), valves, flexible fuel lines, etc.) and connecting parts (rigid fuel lines,
pipes fitting, etc.) fitted on motor vehicles using CNG in their propulsion system
3.3
competent body
person or corporate body, defined by the national or relevant authority, which by combination of
appropriate qualification, training, experience and resources is able to make objective judgments on a
subject
[SOURCE: ISO 10691:2004, 3.2]
3.4
compressed natural gas
CNG
natural gas used as a fuel for automotive vehicles, typically compressed up to 20 MPa in the gaseous state
[SOURCE: EN 16723-2:2017, 3.5]
3.5
cylinder
pressure vessel used for the storage of compressed natural gas
[SOURCE: EN ISO 16923:2018, 3.15]
3.6
examining body
organization that has been appointed to verify compliance with the applicable standard
Note 1 to entry: In certain cases, an external independent examining body can be required.
[SOURCE: ISO/TR 25901-1:2016, 2.5.30]
3.7
gas-free
less than 10 % of the lower flammable limit of natural gas in air (less than 0,5 % in air)
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SIST EN 13423:2021
EN 13423:2021 (E)
3.8
hazardous area
area in which an explosive gas atmosphere is present, or can be expected to be present, in quantities such
as that special precautions for the construction, installation and use of equipment are required
Note 1 to entry: The interior of many items of process equipment are commonly considered as a hazardous area
even though a flammable atmosphere may not normally be present to account for the possibility of air entering the
equipment. Where specific controls such as inerting are used the interior of process equipment may not need to be
classified as a hazardous area.
[SOURCE: EN 60079-10-1:2015, 3.3.1]
3.9
ignition source
source of energy sufficient to ignite a flammable atmosphere
Note 1 to entry: Ignition sources include naked flames, exposed incandescent material, sparks, electric welding arcs,
and electrical or mechanical equipment not approved for use in hazardous locations.
3.10
incident
unplanned event or occurrence that has been assessed as having an actual or potentially adverse effect
Note 1 to entry: An incident can be classified as a ‘major incident’ or ‘minor incident’. A major incident has effect on
the NGV’s integrity or structural support (vehicle chassis) whereas a minor incident doesn’t. An example of a major
incident is damage to the bonnet/wing, which is designed to crumple to absorb the impact rather than continue to
transfer the momentum to the car’s passengers; a damaged hood can imply a damage on vehicle chassis. An example
of a minor incident is damage to a door panel that can be minor when limited to the skin (outer panel).
[SOURCE: ISO 28007-1:2015, 3.21, modified – ‘event’ has been replaced with ‘unplanned event or
occurrence’ and Note 1 to entry has been added.]
3.11
inspection
process of measuring, examining, testing, gauging or otherwise comparing the product with the
applicable requirements
[SOURCE: ISO 11961:2018, 3.1.19]
3.12
learning outcome
what a person is expected to know, understand or be able to do at the end of a training programme, course
or module
[SOURCE: ISO/IEC TS 17027:2014, 2.57]
3.13
lower flammable limit
LFL
concentration of flammable gas or vapour in air, below which an explosive gas atmosphere does not form
[SOURCE: EN 60079-10-1:2015, 3.6.12]
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SIST EN 13423:2021
EN 13423:2021 (E)
3.14
natural gas
complex gaseous mixture of hydrocarbons, primarily methane, but generally includes ethane, propane
and higher hydrocarbons, and some non-combustible gases such as nitrogen and carbon dioxide
Note 1 to entry: Natural gas can also contain components or contaminants such as mercaptan, sulphur compounds
and/or other chemical species.
Note 2 to entry: Annex C provides characteristics of natural gas.
[SOURCE: EN 16723-2:2017, 3.12, modified – Note 2 to entry has been added.]
3.15
natural gas vehicle
NGV
road vehicle powered by natural gas
3.16
NGV owner
legal entity responsible for the procedures and activities on NGVs
3.17
NGV workshop
dedicated servicing facility, repair and maintenance where work on NGVs is carried out
3.18
purging
displacing natural gas with a non-flammable gas, steam, air or water
3.19
qualification
formal outcome of an assessment and validation process which is obtained when a competent body
determines that an individual has achieved learning outcomes to given standards
[SOURCE: CEN Guide 14:2010, Annex B.2]
3.20
qualified person
individual subjected to qualification process which has passed the qualification
3.21
remote-controlled service valve
device that allows or interrupts the CNG supply to the vaporizer/pressure regulator
3.22
requirement
need or expectation that is stated, generally implied or obligatory
[SOURCE: ISO 9000:2015, 3.6.4, modified — Notes 1 to 6 to entry have been deleted.]
3.23
service pit
hole in the ground providing standing access to the underside of a vehicle
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SIST EN 13423:2021
EN 13423:2021 (E)
3.24
service valve
valve for fluid off-take which is manually operated to provide a leak-tight seal
3.25
service vessel
pressure vessel used for retrieving natural gas from the cylinders of a natural gas vehicle
3.26
system manufacturer
company which can assume technical responsibility for the manufacturing or retrofitting of CNG system
and can demonstrate that it possesses the features required and the necessary means to provide quality
assessment and conformity of production of the CNG system
3.27
technical manager
qualified person which takes responsibility for decisions relating to installation, maintenance and repair
of an NGV system
3.28
vehicle manufacturer
person or body responsible to the approval authority for all aspects of the type approval or authorization
process and for ensuring conformity of production of the vehicle
Note 1 to entry: It is not essential that the person or body be directly involved in all stages of the construction of the
vehicle, system, component or separate technical unit which is the subject of the approval process.
Note 2 to entry: Vehicle manufacturer can also mean vehicle importer where the manufacturer is not represented
in the European Union.
[SOURCE: EN ISO 18542-1:2012, 3.1.17, modified – Note 2 to entry has been added.]
3.29
ventilation
movement of air and its replacement with fresh air, due to the effect of wind, temperature gradients, or
artificial means (for example fans or extractors)
[SOURCE: EN ISO 16923:2018, 3.54]
3.30
venting
controlled release of natural gas to atmosphere
[SOURCE: EN ISO 16923:2018, 3.55]
4 General provisions
The management of NGVs shall be done in accordance with Annex A. The requirements in Annex A are
also intended to apply to the user of the NGV, whether he is the owner, operator or dealer responsible for
the sale or maintenance of the vehicle.
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SIST EN 13423:2021
EN 13423:2021 (E)
5 NGV workshop activities
NGV workshops shall be designed to accommodate one or more of the following activities:
a) NGV system inspection;
b) NGV system installation;
c) NGV system repair;
d) NGV system maintenance;
e) NGV system requalification;
f) NGV system disposal;
g) other non-gas activities.
6 NGV workshop risk management
6.1 Procedure
Risks in relation to the NGV workshop, and of any NGVs that are handled by it, shall be managed according
to the principles outlined in ISO 31000.
6.2 Risk context
Risks in relation to the NGV workshop, and of any NGVs that are handled by it, shall be addressed in
respect of the various key stakeholders and their respective views, including:
a) health and safety organizations;
b) examining bodies;
c) local authority;
d) fire and emergency response providers;
e) environmental agencies;
f) system manufacturers;
g) vehicle manufacturers;
h) NGV workshop owners;
i) NGV workshop personnel;
j) NGV workshop neighbours;
k) NGV users;
l) the general public.
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SIST EN 13423:2021
EN 13423:2021 (E)
6.3 Risk assessment
Risks in relation to the NGV workshop, and of any NGVs that are handled by it, shall be assessed using
appropriate techniques. The risk assessment shall as a minimum include the following aspects of the NGV
workshop:
a) organization;
b) layout;
c) systems;
d) operations.
NOTE EN IEC 31010 provides general guidance on selection and application of systematic techniques for risk
assessment.
6.4 Risk treatment
All identified risks in relation to the NGV workshop and of any NGVs that are handled by it, shall be treated
in a manner which minimizes their impact to an acceptable level for all foreseeable hazards including,
but not limited to:
a) fire and explosion;
b) pressure;
c) asphyxiation;
d) electrocution.
6.5 Risk monitoring and review
All identified risks in relation to the NGV workshop, and of any NGVs that are handled by it, shall be
monitored and reviewed. Risk monitoring and review shall be done on a periodic basis, but can be done
on an ad-hoc basis as well.
6.6 Risk documentation
All identified risks in relation to the NGV workshop, and of any NGVs that are handled by it, shall be
comprehensively documented in a manner that clearly describes how they are managed.
NOTE Documented information can include hazardous area classification drawings, mitigation strategies, and
fire escape routes.
7 NGV workshop planning
7.1 Tools and equipment
The NGV workshop shall have all the tools and equipment necessary to operate on NGVs in accordance
with the vehicle and/or system manufacturer’s requirements. Tools and equipment shall be suitably
managed by a qualified person. Management of tools and equipment shall include procurement, periodic
inspection, calibration, upgrading and replacement.
A non-exhaustive list of recommended tools and equipment is provided in Annex D.
Noise levels from equipment (e.g. compressor or vacuum pump) shall be evaluated. Measures shall be
put in place to minimize the impact of noise on the external environment.
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SIST EN 13423:2021
EN 13423:2021 (E)
7.2 Security measures
The NGV workshop shall implement security measures in order to prevent unauthorized persons from
accessing areas of the site, which could pose a risk to safety.
7.3 Emergency planning
7.3.1 Emergency procedures
The NGV workshop shall have emergency procedures to respond to at least the following events:
a) a suspected or detected gas leak;
b) a fire (conforming to the provisions of the local fire prevention authority);
c) an accident or injury to personnel.
7.3.2 Emergency access and escape
The NGV workshop shall make provisions for emergency access and escape, taking into account the
requirements for access by emergency response providers (e.g. ambulance, fire brigade) and for
emergency access, escape and evacuation.
7.3.3 Emergency equipment
The NGV workshop shall be adequately furnished with appropriate equipment for dealing with
emergency situations, such as fire protection systems (see 10.2) and first-aid kits.
8 NGV workshop occupants
8.1 General safety
The NGV workshop owner shall provide safety instructions to all persons accessing the NGV workshop
premises, including mechanics/technicians, administration staff and visitors.
NGV workshop occupants shall wear adequate personal protective equipment (PPE), where necessary.
8.2 NGV workshop mechanics/technicians
The NGV workshop owner shall ensure that NGV workshop mechanics/technicians are:
a) trained according to the requirements of 8.3;
b) qualified to perform the specific tasks assigned to them according to the written procedures as
defined in B.5.4;
c) provided with the necessary tools and equipment.
8.3 Training
The training of NGV workshop mechanics/technicians shall cover at least the following aspects:
a) hazards and associated risks in relation to the NGV workshop and in the handling of NGVs, including:
— properties of natural gas;
— the presence of NGVs;
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SIST EN 13423:2021
EN 13423:2021 (E)
— systems under pressure;
— release/escape of natural gas.
b) the theory and practice of dealing with emergency situations, for example:
— use of hand-held fire extinguishers;
— evacuation of the NGV workshop.
8.4 Qualification
NGV workshop personnel shall demonstrate that they are qualified for the tasks assigned to them.
NOTE 1 Qualification can be demonstrated by an authorized qualification body.
NOTE 2 ISO/AWI 23684 and ISO/PWI 24671, both under development at date of publication of this document,
will provide requirements for the competence of technical personnel dealing with NGVs as well as training,
qualification and certification.
9 NGV workshop layout
9.1 Designated areas
The NGV workshop shall have clearly designated areas for its various activities. Typical areas include but
are not limited to:
— parking areas for NGVs;
— working areas for NGVs;
— service pits for NGVs;
— storage area for gas containing systems (e.g. cylinders).
9.2 Marking of areas
If the working area does not encompass the entire NGV workshop, the designated working area(s) on the
workshop floor shall be clearly marked.
9.3 Hazardous areas
Hazardous areas within the NGV workshop shall be determined in accordance with EN 60079-10-1.
9.4 Warning signs and notices
The NGV workshop shall display appropriate signage in the hazardous areas addressing the risks to
which persons entering t
...
SLOVENSKI STANDARD
oSIST prEN 13423:2019
01-oktober-2019
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
Umgang mit erdgasbetriebenen Fahrzeugen
Ta slovenski standard je istoveten z: prEN 13423
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
oSIST prEN 13423:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 13423:2019
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oSIST prEN 13423:2019
DRAFT
EUROPEAN STANDARD
prEN 13423
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2019
ICS 43.020; 43.180; 75.200 Will supersede EN 13423:2000
English Version
Natural gas vehicles - Requirements for NGV workshops
and the management of compressed natural gas (CNG)
vehicles
Umgang mit erdgasbetriebenen Fahrzeugen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 326.
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, Turkey 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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 13423:2019 E
worldwide for CEN national Members.
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Contents
European foreword . 6
Introduction . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
4 General provisions . 12
5 NGV workshop activities . 12
6 NGV workshop risk management . 13
6.1 Procedure . 13
6.2 Risk context . 13
6.3 Risk assessment . 13
6.4 Risk treatment . 14
6.5 Risk monitoring and review . 14
6.6 Risk documentation . 14
7 NGV workshop planning . 14
7.1 Systems management . 14
7.1.1 Operational equipment . 14
7.1.2 Upgrading of equipment. 14
7.1.3 Noise from equipment. 14
7.2 Security measures . 15
7.3 Emergency planning . 15
7.3.1 Emergency procedures . 15
7.3.2 Emergency access and escape . 15
7.3.3 Emergency equipment . 15
8 NGV workshop personnel . 15
8.1 General. 15
8.2 Training . 15
8.3 Qualification . 16
8.4 General safety . 16
9 NGV workshop layout . 16
9.1 Designated areas . 16
9.2 Marking of areas . 16
9.3 Hazardous areas . 16
9.4 Warning signs and notices . 16
9.5 General atmosphere . 17
9.6 Increased hazards . 17
10 NGV workshop systems . 17
10.1 Air compressor system . 17
10.2 Fire protection system . 17
10.3 Gas detection system . 17
10.3.1 General. 17
10.3.2 Portable unit . 18
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10.4 Heat and lighting system . 18
10.5 Measurement system . 18
10.6 Mechanical ventilation system . 18
11 NGV workshop operations. 18
11.1 General . 18
11.2 Documentation . 18
11.2.1 Written procedures . 18
11.2.2 Record keeping . 18
11.3 Gas leak management . 19
11.3.1 Reporting of gas leak . 19
11.3.2 Handling NGVs with gas leaks . 19
11.3.3 Isolation of cylinders . 19
Annex A (normative) Management of NGVs . 20
A.1 Use of NGVs . 20
A.2 Parking of NGVs . 20
A.3 Inspection of NGVs . 20
A.3.1 Routine assessment . 20
A.3.2 Unplanned assessment . 20
A.4 Installation, repair and maintenance of NGVs . 20
A.4.1 General . 20
A.4.1.1 CNG system and components. 20
A.4.1.1.1 General . 20
A.4.1.1.2 Location . 21
A.4.1.2 Dealing with nonconformity . 21
A.4.2 Preventative measures . 21
A.4.2.1 Overheating . 21
A.4.2.1.1 Welding and brazing . 21
A.4.2.1.2 Heated paint booth . 21
A.4.2.2 Uncontrolled release of gas . 21
A.4.3 Prior to work . 21
A.4.3.1 CNG system isolation . 21
A.4.3.2 CNG system depressurization . 22
A.4.3.2.1 Depressurization cases . 22
A.4.3.2.2 Depressurization exclusions . 22
A.4.3.2.3 Depressurization . 22
A.4.4 During work . 22
A.4.4.1 Qualified person and conformity assessment . 22
A.4.4.2 Part replacement . 22
A.4.4.3 Operation instructions . 22
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A.4.5 After work . 22
A.4.5.1 Gas-free interior testing . 22
A.4.5.2 Gas-tightness testing . 22
A.4.5.3 Leakage testing3 . 23
A.5 Disposal of NGVs . 23
A.5.1 Decommissioning . 23
A.5.2 Scrapping . 23
A.5.2.1 Authorized centre . 23
A.5.2.2 CNG system emptying and purging . 23
A.5.2.3 CNG system removal . 23
A.5.2.4 Vehicle disposal – scrapping . 23
A.5.2.4.1 Empty the gas system . 23
A.5.2.4.2 Informing the disposal agency . 23
A.5.3 Resale . 23
A.6 Transportation of NGVs . 23
A.7 Documentation of NGVs . 24
Annex B (normative) Management of cylinders . 25
B.1 Use of cylinders . 25
B.1.1 Service conditions. 25
B.1.2 Installation instructions . 25
B.2 Handling of cylinders . 25
B.2.1 Unacceptable damage. 25
B.2.2 Hot work . 25
B.3 Inspection of cylinders . 25
B.3.1 Inspection interval . 25
B.3.2 Procedure . 25
B.3.3 Revalidation . 26
B.3.4 Rejection . 26
B.4 Storage of cylinders . 26
B.4.1 General. 26
B.4.2 Hazardous condition. 26
B.4.3 Safe condition . 26
B.5 Depressurization of cylinders . 26
B.5.1 General. 26
B.5.2 Cases . 26
B.5.3 Procedure . 27
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B.5.4 Tasks of the qualified person . 27
B.5.5 Flaring . 27
B.5.5.1 Procedure . 27
B.5.5.2 Restrictions . 27
B.6 Removal of cylinders . 27
B.6.1 Replacement . 27
B.6.2 Removal of CNG . 28
B.7 Maintenance of cylinders . 28
B.8 Mounting of cylinders . 28
B.8.1 Specified case . 28
B.8.2 Unspecified case . 28
B.9 Gas-freeing of cylinders . 28
B.10 Disposal of cylinders . 28
Annex C (informative) Natural gas characteristics . 29
C.1 Information in manual . 29
C.2 Composition of natural gas . 29
C.3 Production of CNG . 29
C.4 Hazards . 30
C.4.1 Toxicity . 30
C.4.2 Explosion danger . 30
C.4.3 Dispersion . 30
C.4.4 Compressibility of the gas . 30
C.4.5 Corrosion in relation to CNG . 30
Annex D (informative) NGV workshop equipment . 32
D.1 Complementary tools . 32
D.2 Measurement tools . 32
D.3 CNG retrofit system specific tools . 33
Bibliography . 34
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European foreword
This document (prEN 13423:2019) 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 document is currently submitted to the CEN Enquiry.
This document will supersede EN 13423:2000.
In comparison with the previous edition, this document is wholly revised.
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Introduction
This document defines the requirements for 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.
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1 Scope
This document provides requirements for operation of vehicles that use compressed natural gas (CNG)
as a fuel, 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, 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.
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, 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)
EN ISO 11439, Gas cylinders - High pressure cylinders for the on-board storage of natural gas as a fuel for
automotive vehicles (ISO 11439)
ISO 15501-1, Road vehicles — Compressed natural gas (CNG) fuel systems — Part 1: Safety requirements
ISO 15501-2, Road vehicles — Compressed natural gas (CNG) fuel systems — Part 2: Test methods
ISO 19078, Gas cylinders — Inspection of the cylinder installation, and requalification of high pressure
cylinders for the on-board storage of natural gas as a fuel for automotive vehicles
ISO 31000, Risk management — Guidelines
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3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
authorized qualification body
body, independent of the NGV workshop, authorized by the certification body to prepare and administer
qualification examinations body, independent of the employer, authorized by the certification body to
prepare and administer qualification examinations
[SOURCE: EN ISO 9712:2012, 3.1, modified – ‘employer’ has been changed to ‘NGV workshop’.]
3.2
certification body
third-party conformity assessment body operating certification schemes
Note 1 to entry: A certification body can be non-governmental or governmental (with or without regulatory
authority).
[SOURCE: EN ISO/IE
...
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