EN 17649:2022
(Main)Gas infrastructure - Safety Management System (SMS) and Pipeline Integrity Management System (PIMS) - Functional requirements
Gas infrastructure - Safety Management System (SMS) and Pipeline Integrity Management System (PIMS) - Functional requirements
This document specifies requirements on the development and implementation of a Safety Management System (SMS) and a Pipeline Integrity Management System (PIMS). The SMS is applicable for system operators of a gas infrastructure. The PIMS is applicable for system operators of gas infrastructure with a maximum operating pressure (MOP) over 16 bar.
This document refers to all activities and processes related to safety aspects and performed by system operators of a gas infrastructure, including those activities entrusted to contractors. It includes safety-related provisions on operation of the gas infrastructure.
This document is applicable to infrastructure for the conveyance of processed, non-toxic and non-corrosive natural gas according to EN ISO 13686 and gases such as biomethane and hydrogen and to mixtures of these gases with natural gas.
This document covers also gases classified as group H, that are to be transmitted, injected into and from storages, distributed and utilized, as specified in EN 16726. For the requirements and test methods for biomethane at the point of entry into a natural gas network, reference is made to EN 16723-1.
This document can be applied for gas infrastructure conveying gases of the 3rd gas family as classified in EN 437 or for other gases such as carbon dioxide.
Specific requirements for occupational health and safety are excluded from this document. For these, other European and/or international standards, e.g. ISO 45001, apply.
This document specifies common basic principles for gas infrastructure. It is important that users of this document are expected to be aware that more detailed national standards and/or codes of practice 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 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).
NOTE CEN/TR 13737 (all parts) contains:
- clarification of relevant legislation/regulations applicable in a country;
- if appropriate, more restrictive national requirements;
- national contact points for the latest information.
Gasinfrastruktur - Sicherheitsmanagementsystem und Rohrleitungsintegritätsmanagementsystem - Funktionale Anforderungen
Dieses Dokument legt Anforderungen an die Entwicklung und Umsetzung eines Sicherheitsmanagementsystems (SMS, en: safety management system) und eines Rohrleitungsintegritätsmanagementsystems (PIMS, en: pipeline integrity management system) fest. Das SMS ist für Systembetreiber einer Gasinfrastruktur anwendbar. Das PIMS ist für Systembetreiber einer Gasinfrastruktur mit einem maximal zulässigen Betriebsdruck (MOP, en: maximum operating pressure) von über 16 bar anwendbar.
Dieses Dokument bezieht sich auf alle Aktivitäten und Prozesse bezüglich der Sicherheitsaspekte, die von Systembetreibern einer Gasinfrastruktur durchgeführt werden, einschließlich jener Aktivitäten, die Subunternehmern anvertraut werden. Es enthält sicherheitsrelevante Bestimmungen für den Betrieb der Gasinfrastruktur.
Dieses Dokument gilt für Infrastruktur für die Beförderung von verarbeitetem, nicht-toxischem und nicht-korrosivem Erdgas nach EN ISO 13686 und von Gasen wie Biomethan und Wasserstoff sowie Gemischen dieser Gase mit Erdgas.
Dieses Dokument deckt auch Gase mit Einstufung als Gruppe H ab, die transportiert, in und aus Speicher(n) eingespeist, verteilt und verwendet werden sollen, wie in EN 16726 festgelegt. Für die Anforderungen und Prüfverfahren für Biomethan am Eintrittspunkt in ein Erdgasnetz wird auf EN 16723 1 verwiesen.
Dieses Dokument kann für Gasinfrastruktur angewandt werden, die Gase der 3. Gasfamilie nach der Einstufung in EN 437 befördert, oder für andere Gase wie Kohlenstoffdioxid.
Spezifische Anforderungen für den Arbeitsschutz sind von diesem Dokument ausgeschlossen. Für diese gelten andere Europäische und/oder internationale Normen wie z. B. ISO 45001.
Dieses Dokument legt gemeinsame Grundprinzipien für Gasinfrastruktur fest. Es ist wichtig, dass von Anwendern dieses Dokuments erwartet wird, zu wissen, dass detailliertere nationale Normen und/oder Leitfäden in den CEN-Mitgliederländern existieren. Dieses Dokument ist dazu vorgesehen, in Verbindung mit diesen nationalen Normen und/oder Leitfäden angewandt werden, die die oben erwähnten Grundprinzipien darlegen.
Wenn Konflikte hinsichtlich restriktiverer Anforderungen in nationalen Rechtsvorschriften/Regelungen mit den Anforderungen dieses Dokuments auftreten, haben die nationalen Rechtsvorschriften/Regelungen den Vorrang, wie in CEN/TR 13737 (alle Teile) verdeutlicht.
ANMERKUNG CEN/TR 13737 (alle Teile) enthält:
— Klärung relevanter Rechtsvorschriften/Regelungen, die in einem Land anwendbar sind;
— ggf. weitergehende strengere nationale Anforderungen;
— nationale Kontaktstellen für die neuesten Informationen.
Infrastructures gazières - Système de management de la sécurité (SMS) et système de management de l’intégrité des canalisations (PIMS) - Exigences fonctionnelles
Le présent document spécifie les exigences relatives au développement et à la mise en œuvre d’un système de management de la sécurité (SMS) et d’un système de management de l’intégrité des canalisations (PIMS). Le SMS s’applique aux exploitants de réseau d’une infrastructure gazière. Le PIMS s’applique aux exploitants de réseau d’infrastructure gazière avec une pression maximale de service (MOP) supérieure à 16 bar.
Le présent document se rapporte à toutes les activités et à tous les processus liés aux aspects sécurité et exécutés par les exploitants de réseau d’une infrastructure gazière, y compris les activités confiées à des sous traitants. Il comprend des dispositions relatives à la sécurité sur l’exploitation de l’infrastructure gazière.
Le SMS décrit s’applique aux infrastructures destinées à l’acheminement de gaz naturel traité non toxique et non corrosif conformément à l’EN ISO 13686 et de gaz non conventionnels tels que le biométhane, l’hydrogène et le gaz naturel de substitution, y compris les gaz injectés.
Le présent document couvre également l’EN 16726, qui spécifie les caractéristiques et les paramètres de qualité des gaz ainsi que leurs limites, pour des gaz classés dans le groupe H qui sont destinés à être transportés, injectés dans et depuis les stockages, distribués et utilisés. Les exigences et méthodes d’essai pour le biométhane au point d’entrée dans le réseau de gaz naturel sont couvertes par l’EN 16723-1.
Le présent document peut s’appliquer aux infrastructures gazières qui acheminent des gaz de la 3e famille de gaz selon la classification de l’EN 437.
Les exigences spécifiques concernant la santé et la sécurité au travail sont exclues du présent document car elles sont couvertes par la législation nationale et d’autres normes européennes et/ou internationales (par exemple OHSAS 18001).
Le présent document spécifie les principes de base communs aux infrastructures gazières. Il est important que les utilisateurs du présent document gardent à l’esprit que des codes de bonnes pratiques et/ou des normes nationales plus détaillées peuvent exister dans les pays membres du CEN. Le présent document est destiné à s’appliquer conjointement à ces normes nationales et/ou codes de bonnes pratiques, qui détaillent les principes de base précités.
En cas de divergences entre des exigences plus restrictives dans la réglementation/législation nationale et les exigences du présent document, la réglementation/législation nationale l’emporte, comme illustré dans le CEN/TR 13737 (toutes les parties).
NOTE 1 Le CEN/TR 13737 (toutes les parties) contient :
- la clarification de la législation/réglementation pertinente applicable dans un pays ;
- si approprié, des exigences nationales plus restrictives ;
- des points de contact nationaux pour obtenir les informations les plus récentes.
Infrastruktura za plin - Sistem varnega upravljanja (SMS) in sistem celostnega upravljanja plinovodnih sistemov (PIMS) - Funkcionalne zahteve
Ta dokument določa zahteve za razvoj in izvajanje sistema varnega upravljanja za upravljavce infrastrukture za prenos in/ali distribucijo plina.
Ta dokument se navezuje na vse dejavnosti in procese, povezane z varnostnimi vidiki, ki jih izvajajo upravljavci plinskega omrežja, vključno z dejavnostmi, zaupanimi pogodbenim izvajalcem. Vključuje varnostne določbe o obratovanju plinskega omrežja.
Opisani sistem varnega upravljanja se uporablja za infrastrukturo za prenos in distribucijo predelanih, nestrupenih in nekorozivnih plinov iz 2. družine plinov v skladu z razvrstitvijo v standardu EN 437, vključno z vbrizganimi plini.
OPOMBA 1: Vbrizgani plini so lahko biometan, vodik, sintetični plini in drugi.
Ta dokument se lahko uporablja tudi za plinsko infrastrukturo, po kateri se pretakajo samo drugi plini, kot so biometan, vodik, sintetični plini ali plini iz 3. družine plinov v skladu z razvrstitvijo v standardu EN 437.
Posebne zahteve za prenos ali distribucijo so na voljo v posebnih delih za prenos in distribucijo.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2022
Nadomešča:
SIST EN 15399:2019
SIST EN 16348:2013
Infrastruktura za plin - Sistem varnega upravljanja (SMS) in sistem celostnega
upravljanja plinovodnih sistemov (PIMS) - Funkcionalne zahteve
Gas infrastructure - Safety Management System (SMS) and Pipeline Integrity
Managementsystem (PIMS) - Functional requirements
Gasinfrastruktur - Sicherheitsmanagementsystem und
Rohrleitungsintegritätsmanagementsystem - Funktionale Anforderungen
Infrastructures gazières - Système de management de la sécurité (SMS) et système de
management de l’intégrité des canalisations (PIMS) - Exigences fonctionnelles
Ta slovenski standard je istoveten z: EN 17649:2022
ICS:
75.200 Oprema za skladiščenje Petroleum products and
nafte, naftnih proizvodov in natural gas handling
zemeljskega plina equipment
91.140.40 Sistemi za oskrbo s plinom Gas supply systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 17649
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2022
EUROPÄISCHE NORM
ICS 23.040.01; 75.200; 03.100.70 Supersedes EN 16348:2013, EN 15399:2018
English Version
Gas infrastructure - Safety Management System (SMS) and
Pipeline Integrity Management System (PIMS) - Functional
requirements
Infrastructures gazières - Système de management de Gasinfrastruktur - Sicherheitsmanagementsystem und
la sécurité (SMS) et système de management de Rohrleitungsintegritätsmanagementsystem -
l'intégrité des canalisations (PIMS) - Exigences Funktionale Anforderungen
fonctionnelles
This European Standard was approved by CEN on 27 June 2022.
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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17649:2022 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 Context of the organization . 9
4.1 Understanding the organization and its context . 9
4.2 Understanding the needs and expectations of stakeholders . 9
4.3 Safety management system (SMS) . 9
4.3.1 General . 9
4.3.2 Determining the scope of the SMS . 9
5 Leadership .10
5.1 Leadership and commitment .10
5.2 Policy .10
5.3 Organizational roles, responsibilities and authorities .11
6 Planning of the SMS .11
6.1 Management of safety aspects and legal requirements .11
6.1.1 Identification and assessment of safety aspects .11
6.1.2 Recording of safety aspects .12
6.1.3 Monitoring of safety aspects .12
6.1.4 Gathering and analysis of incidents .12
6.1.5 Safety aspect review .12
6.1.6 Legal and permit requirements .12
6.2 SMS objectives and planning to achieve them .13
6.3 Management of change .13
6.3.1 General .13
6.3.2 Awareness of the type of medium .13
6.3.3 Competence .13
6.3.4 Gas (mixture) identification .13
6.3.5 Safety procedures .14
6.3.6 Emergency response .14
6.3.7 Connecting systems .14
7 Support of the SMS .14
7.1 Resources .14
7.2 Competence .14
7.3 Awareness .15
7.4 Communication .16
7.5 Documented information of the SMS .16
7.5.1 General .16
7.5.2 Control of documented information .16
8 Operation of the SMS .16
8.1 Operational planning and control of the SMS .16
8.1.1 General .16
8.1.2 Design of the gas infrastructure .17
8.1.3 Construction, commissioning and decommissioning of the gas infrastructure . 18
8.1.4 Operation of the gas infrastructure . 19
8.1.5 Maintenance of gas infrastructure . 20
8.1.6 Gas infrastructure permanently out of service . 21
8.1.7 Adaptation to climate change . 21
8.1.8 Emergency plans . 23
8.1.9 Outsourcing and purchasing . 24
8.1.10 Innovation and improvement . 25
8.2 Performance monitoring, measurement, analysis and evaluation . 25
8.2.1 Performance evaluation framework . 25
8.2.2 Evaluation of compliance . 25
8.3 Internal audit . 25
8.3.1 Purpose of internal audits . 25
8.3.2 Program and implementation of internal audits . 26
8.4 Management review . 26
8.5 Documentation . 26
9 Improvement of the SMS . 27
9.1 Non-conformity and corrective action . 27
9.2 Continual improvement of the SMS . 27
10 Pipeline Integrity Management System (PIMS) . 28
10.1 General requirements . 28
10.2 Identification of the safety aspects for pipeline integrity . 29
10.2.1 General safety aspects . 29
10.2.2 Safety aspects related to injection of other gases than natural gas . 30
10.3 Preparation of integrity programmes . 31
10.4 Application of integrity programmes . 31
10.4.1 Gathering data . 31
10.4.2 Methods to ensure and monitor pipeline integrity . 31
10.5 Integrity assessment . 35
10.6 Mitigation . 35
10.6.1 General . 35
10.6.2 Repair and modification . 35
10.6.3 Adjusting operational conditions . 36
Annex A (informative) Plan-Do-Check-Act (PDCA) methodology . 37
Bibliography . 38
European foreword
This document (EN 17649:2022) has been prepared by Technical Committee CEN/TC 234 “Gas
infrastructure”, the secretariat of which is held by DIN.
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 February 2023, and conflicting national standards shall
be withdrawn at the latest by February 2023.
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 15399:2018, and EN 16348:2013.
New points for attention in this document are adaptations to climate change and the injection of hydrogen
and other gases into natural gas networks. As gases other than natural gas will be more often injected
into existing natural gas networks in the future, Management of Change has been introduced in this
document to ensure that all relevant safety aspects are taken into account when this occurs.
There is a complete suite of functional standards prepared by CEN/TC 234 “Gas infrastructure” to cover
all parts of the gas infrastructure system from the point of entry into the gas infrastructure up to the point
of delivery of the customers, whether domestic, commercial or industrial.
In preparing this document, a basic understanding of Management Systems and gas infrastructure by the
user has been assumed.
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
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 provides guidance on the establishment, implementation and maintenance of a safety
management system, all in order to provide an efficient gas transmission and distribution infrastructure
for the safe and secure conveyance of gas.
This document supports a System Operator (SO) in the implementation of a management system
following the Plan-Do-Check-Act (PDCA) methodology, described in Annex A. It can be used in
conjunction with ISO Management Systems such as EN ISO 9001, EN ISO 14001, ISO 31000 and also in
case of assessment or certification by a third party.
The main objectives of this document are to provide the necessary requirements:
— to be included in a management system related to safety and efficiency of the main processes being
the life cycle stages of gas infrastructure (design, construction and testing, commissioning/
decommissioning, operation, maintenance and permanently taken out of service) for all of the SO's
gas conveying assets. In practice, this is expressed on methods and organisational features as well as
technical aspects;
— in demonstrating the competencies required for employees and any contractors involved in the
processes mentioned above.
It is at the SO's discretion to include other objects and structures in his own management system.
The structure of this document is based on the ISO High Level Structure of standard on Management
Systems (ISO/IEC Directives, Part 1, Consolidated ISO Supplement, 2015, Annex SL (normative)
Proposals for management system standards).
The technical contents are in line with EN 12007 (all parts) and EN 1594.
1 Scope
This document specifies requirements on the development and implementation of a Safety Management
System (SMS) and a Pipeline Integrity Management System (PIMS). The SMS is applicable for system
operators of a gas infrastructure. The PIMS is applicable for system operators of gas infrastructure with
a maximum operating pressure (MOP) over 16 bar.
This document refers to all activities and processes related to safety aspects and performed by system
operators of a gas infrastructure, including those activities entrusted to contractors. It includes safety-
related provisions on operation of the gas infrastructure.
This document is applicable to infrastructure for the conveyance of processed, non-toxic and non-
corrosive natural gas according to EN ISO 13686 and gases such as biomethane and hydrogen and to
mixtures of these gases with natural gas.
This document covers also gases classified as group H, that are to be transmitted, injected into and from
storages, distributed and utilized, as specified in EN 16726. For the requirements and test methods for
biomethane at the point of entry into a natural gas network, reference is made to EN 16723-1.
This document can be applied for gas infrastructure conveying gases of the 3rd gas family as classified in
EN 437 or for other gases such as carbon dioxide.
Specific requirements for occupational health and safety are excluded from this document. For these,
other European and/or international standards, e.g. ISO 45001, apply.
This document specifies common basic principles for gas infrastructure. It is important that users of this
document are expected to be aware that more detailed national standards and/or codes of practice 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 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).
NOTE CEN/TR 13737 (all parts) contains:
— clarification of relevant legislation/regulations applicable in a country;
— if appropriate, more restrictive national requirements;
— national contact points 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 1594, Gas infrastructure - Pipelines for maximum operating pressure over 16 bar - Functional
requirements
EN 12007 (all parts), Gas infrastructure - Pipelines for maximum operating pressure up to and including 16
bar
EN 12186, Gas infrastructure - Gas pressure regulating stations for transmission and distribution -
Functional requirements
EN 12327, Gas infrastructure - Pressure testing, commissioning and decommissioning procedures -
Functional requirements
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:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
climate change
change in the state of the climate that can be identified by changes in the mean and/or the variability of
its properties, and that persists for an extended period, typically decades or longer
Note 1 to entry: The definition of climate change is based on the IPCC definition.
Note 2 to entry: Both natural processes and human activity can cause climate change.
3.2
climate change adaption
process of adjustment to actual or expected climate change and its effects
Note 1 to entry: The definition of climate change adaption is based on the IPCC definition.
3.3
system operator
private or public organisation authorised to design, construct and/or operate and maintain the gas
infrastructure
Note 1 to entry: Synonyms are: pipeline operator (see EN 1594), gas network operator.
[SOURCE: EN 1594:2013, 3.31, modified - Term 'pipeline operator' has been changed in 'system operator'
and Note 1 to entry has been added]
3.4
gas infrastructure
pipeline system including pipework and their associated stations or plants for the transmission and
distribution of gas
Note 1 to entry: Synonym is: gas network.
3.5
hazard
anything which is a source of potential loss of inventory or damage of the gas infrastructure
3.6
inspection
process of measuring, examining, testing, gauging or otherwise determining the status of items of the
pipeline system or installation and comparing it with the applicable requirements
[SOURCE: EN 1594:2013, 3.18]
3.7
integrity
condition in which an asset is safe and reliable for its purpose
3.8
maintenance
combination of all technical and associated administrative actions intended to keep an item in, or restore
it to, a state in which it can perform its required function
[SOURCE: EN 1594:2013, 3.21]
3.9
operational integrity
condition in which an asset is safe and reliable by means of a set of appropriate operational activities and
practices
3.10
pipeline integrity management system
PIMS
set of appropriate activities and practices by which a transmission system operator preserves the
integrity of the gas transmission pipeline to ensure safe and reliable transportation of natural gas
3.11
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
3.12
safety aspect
element or event that, if not properly managed, can cause a potential hazard for the population, the
environment and for the gas infrastructure
EXAMPLE Examples of safety aspects:
— design and modifications;
— operating procedures;
— workforce competence;
— human factors;
— emergency arrangements;
— protective devices, instrumentation and alarms;
— inspection and maintenance;
— defects and subsequent repair activities;
— permit to work;
— asset records and data quality;
— third party activities;
— climate change effects;
— changes in the type of gas;
— identification of pipelines.
3.13
Safety Management System
SMS
set of appropriate activities and practices by which a SO preserves a safe and reliable gas transmission
or distribution system and mitigates the consequences of incidents
4 Context of the organization
4.1 Understanding the organization and its context
The System Operator (SO) shall establish, implement and maintain a (written) procedure-based safety
management system (SMS) for its gas infrastructure, by fulfilling the requirements of this Clause 4. The
safety management system shall form a part of the overall company management systems.
The organization shall determine external and internal issues that are relevant to the purpose of the SMS
and that affect its ability to achieve the intended outcome(s). Such issues can include environmental,
societal and organisational conditions being affected by or capable of affecting the organization.
4.2 Understanding the needs and expectations of stakeholders
The organization shall determine:
— the stakeholders that are relevant to the SMS;
— the relevant requirements of these stakeholders.
4.3 Safety management system (SMS)
4.3.1 General
The SO shall specify the policy, the objectives and the organization of its safety management system. They
shall include the following:
— safety of the public;
— safety of personnel;
— protection of urban, natural or industrial environment;
— operational life and reliability of the gas infrastructure.
4.3.2 Determining the scope of the SMS
To enable the SO to achieve the required safety and reliability of the gas transmission and distribution
infrastructure, the SMS shall consider the safety aspects of gas conveyance activities in:
a) the main processes being the life cycle stages of gas infrastructure:
1) design;
2) construction (including testing);
3) commissioning/decommissioning;
4) operation (including emergency plans, see 8.1.8);
5) maintenance;
6) permanently taken out of service.
b) the enabling processes which support the main processes and which can comprise the following:
— training;
— purchasing;
— communication;
— documentation;
— regulatory compliance;
— (monitoring developments in) innovation.
Provisions shall be incorporated into the safety management system to:
— ensure the safe operation of the gas infrastructure;
— monitor its condition;
— ensure safe and effective maintenance;
— deal effectively and responsibly with incidents and emergencies;
— develop and maintain all required competencies.
5 Leadership
5.1 Leadership and commitment
The top management of the SO shall provide visible and active leadership in developing and maintaining
a culture that supports the management of safety.
The top management shall specify a safety policy in which overall objectives and a commitment to
maintain and improve safety performance are clearly stated.
5.2 Policy
The safety policy shall:
— be appropriate to the nature, scale and safety impacts of its activities;
— include commitments to:
— the prevention of incidents;
— ensure safe and reliable conveying of gas;
— the mitigation of consequences for the public and the environment;
— include a commitment to comply with relevant legislation, regulations, company policies and
procedures related to the safety policy;
— include a framework for setting and reviewing safety objectives and targets;
— be documented, implemented, maintained and communicated to all employees and to contractors
carrying out activities that can have safety implications;
— be made available to stakeholders, e.g. on a website.
To implement the safety policy the SO shall specify, document and maintain objectives that take into
account the safety aspects of the gas infrastructure (6.1.1), the legal and other requirements (6.1.6),
technological developments, operational and business requirements. The objectives shall be measurable
and associated to qualitative or quantitative targets.
5.3 Organizational roles, responsibilities and authorities
The SO's top management shall appoint in writing specific management representatives who,
irrespective of other responsibilities, shall have specified roles, responsibilities and authority for:
— ensuring that the safety management system is established, implemented and maintained in
accordance with this document;
— reporting on the performance of the safety management system to top management for review
(see 8.4) and as a basis for continuous improvement of the safety management system.
This appointment of the specific management representatives shall be communicated to the employees.
6 Planning of the SMS
6.1 Management of safety aspects and legal requirements
6.1.1 Identification and assessment of safety aspects
The SO shall systematically identify and assess all reasonably foreseeable safety aspects in order to
determine the likelihood and consequence of the actual hazard that they present to the public, the
employees, the environment and gas infrastructure at each stage of the asset lifecycle.
The SO shall describe how these aspects are managed by the SMS through appropriate controls, including
the procedures, services and equipment that are safety critical.
NOTE 1 The safety aspects are usually similar for large parts of the infrastructure. In some cases, there are local
safety aspects which must also be considered.
The SO shall consider possible future safety aspects related to climate change effects and conveying of
natural gases from different sources and gases other than natural gas. These new safety aspects shall be
taken into account in the design of new gas infrastructure and in the operation of existing gas
infrastructure.
NOTE 2 For a list of climate change effects see: CEN-CENELEC-NEN, Tailored guidance for standardization
technical committees: How to include climate change adaptation in European infrastructure standards, Annex 2
[13].
The assessment shall be carried out using qualitative and/or quantitative techniques as considered
appropriate by the SO.
Safety management strategies shall include prevention, protection and mitigation activities.
NOTE 3 Following his company policy the SO can apply a risk management approach to prevent, protect and
mitigate safety aspects and actual hazards. ISO 31000 can give guidance on risk management.
6.1.2 Recording of safety aspects
The results of the safety aspects and assessment process shall be recorded in a specified register that
record details of:
— identified hazards and their causes;
— existing safety controls that are in place to manage the safety;
— a description of any additional control measures that are required to bring safety aspects to an
acceptable level;
— how responsibility for the day-to-day management of the safety aspect(s) is considered.
6.1.3 Monitoring of safety aspects
The SO shall have processes to ensure that any new safety aspects, especially climate change effects and
injection of hydrogen, are identified and that existing safety aspects are regularly monitored to ensure
that they are still valued correctly.
6.1.4 Gathering and analysis of incidents
The safety management system shall have appropriate arrangements for investigating gas safety and/or
climate change related incidents, which should ascertain not only the immediate cause but also the ‘root
cause’ of such incidents.
The processes for carrying out accident investigation should also describe how recommendations to
prevent recurrence are made and how follow-up actions are managed.
6.1.5 Safety aspect review
The SO shall review the safety aspects register at a prescribed frequency. The review shall include the
following:
— analysis of incidents which can have occurred;
— a review of safety aspects;
— safety aspects ranking and evaluation;
— setting safety level objectives and targets;
— a review of the results of mitigating actions.
6.1.6 Legal and permit requirements
The SO shall have a procedure to identify the legal requirements and other requirements that are
applicable to the safety aspects of its activities.
The SO can decide to specify and adopt internal company standards based on legal requirements, national
standards, European and/or international standards, adapted to its own skills and knowledge.
The SO shall ensure that these requirements are taken into account when establishing, implementing and
maintaining its SMS.
6.2 SMS objectives and planning to achieve them
The SO shall specify a plan for achieving the objectives of the SMS.
The plan shall ensure that:
— there is compliance with the safety policy;
— the identification, recording and follow-up of corrective or improvement actions are carried out;
— there is provision for the control of abnormal situations including emergencies;
— the identification of training needs, their provision and the evaluation of their effectiveness are
carried out;
— the SMS is audited.
The plan shall include:
— designation of individual responsibility and authority for achieving the objectives (objectives
owners);
— the means and the time-frame by which the objectives are to be achieved;
— procedures to monitor on a regular basis the achievement of the objectives through indicators.
The plan shall be reviewed on a regular basis and at specified intervals and adjusted when necessary.
6.3 Management of change
6.3.1 General
The introduction of other gases such as hydrogen, biomethane or change in odorization in an existing
natural gas infrastructure shall be preceded by a management of change process. In case of a hydrogen –
natural gas mixture the SO shall determine the percentage hydrogen above which the gas cannot be
treated anymore as natural gas and therefore management of change is necessary.
Depending on the changes to the composition of the gas introduced into a natural gas infrastructure, the
SO shall conduct a revision of the SMS and, if applicable, the PIMS to assess all safety aspects affected by
the changes.
6.3.2 Awareness of the type of medium
All personnel involved in the operation or maintenance of the infrastructure shall be made aware of any
gas composition different from natural gas being present in the infrastructure or in designated parts of
the infrastructure. Safety and operational procedures that have been changed shall be made available and
explained to the involved personnel.
6.3.3 Competence
The involved personnel shall be trained for operational tasks, maintenance tasks and emergency
response in relation to different gases introduced in the natural gas infrastructure.
6.3.4 Gas (mixture) identification
Pipeline systems conveying gas mixtures that will change the safety aspects such as hydrogen mixtures
shall be clearly distinguishable by for example geographical information system (GIS) documentation. In
any case the operator shall be able to identify the type of gas in each pipeline in operation.
6.3.5 Safety procedures
Safety procedures shall be tailored to the gas in the infrastructure. In case of hydrogen mixtures attention
shall be given to:
— lower threshold value for auto ignition than for natural gas;
— wider explosion limits than for natural gas, especially the upper explosion limit;
— higher tendency to rise when released in the atmosphere compared to natural gas;
— transparent flames from small leakages;
— commissioning and decommissioning of pipelines (purging); reference is made to EN 12327;
— ATEX zoning, approaching of potential leak sources e.g. valves and flanges, venting of hydrogen
(mixtures);
— appropriate detection equipment;
— operational and maintenance procedures with respect to changes in the type of gas.
6.3.6 Emergency response
Emergency response procedures shall be adapted to the conveyed gases. Existing safety distances shall
be revised. All personnel involved shall be trained with respect to the different emergency response
procedures and behaviour in case of emergencies with conveyed gases. The System Operator shall liaison
with local authorities and the emergency services to make them aware of any changes in emergency
response due to the presence of the conveyed gases.
6.3.7 Connecting systems
The SO shall inform the operators of connecting systems and coordinate changes in the conveyed gases.
7 Support of the SMS
7.1 Resources
Top management shall provide resources adequate for the implementation and control of the safety
management system. Resources include human resources with appropriate skills, technology and
financial resources.
The appointed management representative shall ensure that the organization and responsibilities for the
implementation of the plan are specified, documented and communicated.
7.2 Competence
The SO shall:
— determine the necessary competency of employees and contractors that affects its safety aspects,
safety management and safety management system;
— ensure that these persons are competent on the basis of appropriate education, training, or
experience;
— ensure that employees and contractors are suitable for the task they fulfil;
— where applicable, take actions to acquire the necessary competence, and evaluate the effectiveness
of the actions taken;
— retain appropriate documented information as evidence of competence;
— periodically review current and future competency needs and requirements.
NOTE Applicable actions can include, for example: the provision of training to, the mentoring of, or the
reassignment of currently employed persons, or the hiring or contracting of competent persons.
Contractors performing tasks for the SO on its behalf, which can affect any safety aspects, shall
demonstrate their competence and shall retain associated records.
For this, the SO can provide training to contractors.
The competences of the persons involved in the design, construction, commissioning, operation,
maintenance and taking out of service of a gas infrastructure, or parts of it, shall be in accordance with
the characteristics of the gas infrastructure they are working on. These characteristics can include, but
are not limited to the following:
— type of gas;
— local conditions;
— design or operating pressure;
— materials used in the system;
— jointing techniques;
— emergency procedures.
The SO shall undertake actions in order to maintain required technical knowledge and to follow up
technical development.
Informative meetings that are relevant for the SMS shall be documented.
7.3 Awareness
The SO shall ensure that its employees at each relevant function and level are aware of:
— the SMS policy;
— the safety aspects;
— their roles and responsibilities in achieving conformance to the safety policy, the procedures and the
objectives of the SMS;
— the renewal of training and education, when necessary;
— potential consequences of departure from specified operating procedures;
— significant safety impacts, actual or potential, of their work activities and the benefits of improved
personal performance.
7.4 Communication
The SO shall have a procedure and tools for:
— internal communication about all details of the SMS between the various levels and functions of the
organization;
— external communication about the relevant aspects of the SMS with stakeholders during the whole
life cycle of the gas infrastructure in particular on the emergency response.
7.5 Documented information of the SMS
7.5.1 General
The SO shall have documented information to describe the safety management system containing:
— the safety policy;
— description of the scope of the SMS;
— description of the safety aspects;
— the procedures for the main processes of the system and reference to the related documents;
— documents necessary to ensure the effective planning, operation and control of processes that relate
to the safety aspects.
7.5.2 Control of documented information
The SO shall have a procedure and responsibilities for creating, modifying and controlling the documents
required by this document to ensure that:
— the current version of relevant documents required for the effective functioning of the SMS is
accessible;
— they are revised when necessary and approved for use by authorized personnel prior to issue;
— documentation is legible, clear, dated (with dates of revision) and readily identifiable, maintained in
an orderly manner and retained for a specified period;
— any obsolete documents shall be removed from the system or suitably identified if retained for legal
and/or knowledge preservation purposes.
8 Operation of the SMS
8.1 Operational planning and control of the SMS
8.1.1 General
The safety aspects shall be managed by operational planning and control aimed at the safe conveying of
gas, prevention of incidents and the mitigation of consequences.
The SO shall apply the requirements of EN 12007 (all parts), EN 1594 and other EN standards relevant
to gas infrastructures.
The SO shall have a procedure that specifies the resources and activities to carry out the operational
planning and control of the main processes (see 4.3.2), including emergency plans (see 8.1.8).
The SO shall have a procedure for the handover of documents from one stage to another during all the
stages from design to operation.
8.1.2 Design of the gas infrastructure
8.1.2.1 General
The design process is the first and essential step that enables the SO to ensure a safe and reliable supply
of gas through the gas infrastructure. The extent and detail of the design shall be sufficient to demonstrate
that the integrity of the system can be maintained during the (operational) life of the infrastructure.
The SO shall have procedures for the management of the design of new infrastructures and of
modifications of the existing ones, assuring that the following requirements are met:
— the safety policy;
— the safety objectives and targets;
— legal requirements;
— the selection of designer(s): the design shall be carried out by qualified designer(s) who can be either
internal or external.
The detailed desi
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