Gas infrastructure - Safety Management Systems for gas networks with maximum operating pressure up to and including 16 bar

This European Standard specifies requirements on the development and implementation of a safety management system for operators of gas network with a maximum operating pressure up to and including 16 bar according to EN 12007 (all parts).
This European Standard refers to all activities and processes related to safety aspects and performed by a DSO including those activities entrusted to contractors.
The described safety management system is applicable to infrastructure for the distribution of processed, non-toxic and non-corrosive gas of the 2nd gas family as classified in EN 437, including injected gases from non-conventional sources.
NOTE   Gases from non-conventional resources can be bio methane, hydrogen, shale gas, synthetic gases and others.

Gasinfrastruktur - Sicherheits-Management-Systeme für Gasnetze mit maximalem Betriebsdruck bis einschließlich 16 bar

Dieses Dokument legt die Anforderungen an die Entwicklung und Umsetzung eines Sicherheitsmanagementsystems für Betreiber eines Gasnetzes mit einem maximal zulässigen Betriebsdruck bis einschließlich 16 bar nach EN 12007 (alle Teile) fest.
Dieses Dokument bezieht sich auf alle Aktivitäten und Prozesse bezüglich der Sicherheitsaspekte, die von einem Betreiber eines Gasnetzes mit einem maximal zulässigen Druck von bis zu 16 bar durchgeführt werden, einschließlich jener Aktivitäten, die einem Subunternehmer anvertraut werden. Dieses Dokument enthält sicherheitsrelevante Vorgaben für den Betrieb des Gasnetzes.
Das beschriebene Sicherheitsmanagementsystem ist auf die Infrastruktur zur Verteilung von aufbereitetem, schadstofffreiem und nicht korrosivem Gas der 2. Gasfamilie, wie in EN 437 klassifiziert, einschließlich eingespeistem Gas unkonventioneller Quellen anwendbar.
ANMERKUNG 1   Gase von unkonventionellen Ressourcen können Biomethan, Wasserstoff, Schiefergas, synthetische Gase und andere sein.
Dieses Dokument kann auch für eine Gasinfrastruktur angewendet werden, die nur Gase unkonventioneller Quellen überträgt, wie z. B. Biomethan-Netze oder Gase aus der 3. Familie, wie in EN 437 klassifiziert.
Für Sicherheitsmanagement- und Rohrleitungsintegritätsmanagementsysteme mit einem maximal zulässigen Betriebsdruck über 16 bar gilt grundsätzlich EN 16348.
ANMERKUNG 2   Wenn kleinere Abschnitte des Gasnetzes mit einem maximal zulässigen Betriebsdruck von über 16 bar betrieben werden, können diese nach diesem Dokument auch mithilfe eines SMS verwaltet werden. Für das Rohrleitungsintegritätsmanagement gilt EN 16348.
ANMERKUNG 3   Wenn kleinere Abschnitte eines Gastransportnetzes mit einem maximal zulässigen Betriebsdruck von bis zu 16 bar betrieben werden, kann dieses Dokument oder EN 16348 angewendet werden. In jedem Fall gilt für das Rohrleitungsintegritätsmanagement EN 16348.
Spezifische Anforderungen für den Arbeitsschutz sind von diesem Dokument ausgeschlossen. Nationale Rechtsvorschriften und andere Europäische und/oder internationale Normen wie z. B. OHSAS 18001 gelten.
Dieses Dokument legt gemeinsame Grundprinzipien für die Gasinfrastruktur fest. Es ist wichtig, dass Anwender dieser Norm wissen, dass detailliertere nationale Normen und/oder Leitfäden in den CEN-Mitgliederländern existieren können. Dieses Dokument soll 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 dieser Norm auftreten, haben die nationalen Rechtsvorschriften/Regulierungen den Vorrang, wie in CEN/TR 13737 (alle Teile) verdeutlicht.
ANMERKUNG 4   CEN/TR 13737 (alle Teile) enthält:
—   Klärung relevanter Rechtsvorschriften/Regelungen, die in einem Land anwendbar sind;
—   gegebenenfalls restriktivere nationale Anforderungen;
—   nationale Anlaufstelle für die neusten Informationen.

Infrastructures gazières - Systémes de management de sécurité pour des reseaux de gaz pour pression maximale de service inférieure ou égale à 16 bar

Ce document spécifie les exigences relatives au développement et à la mise en oeuvre d’un système de management de la sécurité destiné aux gestionnaires de réseau de gaz dont la pression maximale de service est inférieure ou égale à 16 bar, conformément à l’EN 12007 (toutes les parties).
Ce document se rapporte à toutes les activités et processus liés à l'aspect sécurité et exécutés par l’opérateur du réseau de gaz dont la pression maximale de service est inférieure ou égale à 16 bar, y compris les activités confiées à des sous-traitants. Il comprend des dispositions relatives à la sécurité sur le fonctionnement du réseau de gaz.
Le système de management de la sécurité décrit est applicable à l’infrastructure de distribution de gaz traité, non toxique et non corrosif de la 2ème famille de gaz selon la classification de l’EN 437, y compris les gaz injectés à partir de sources non conventionnelles.
NOTE 1 Les gaz issus de ressources non conventionnelles peuvent également être du biométhane, de l’hydrogène, du gaz de schiste, des gaz de synthèse, etc.
Ce document est également applicable aux infrastructures qui transportent uniquement des gaz issus de sources non conventionnelles, telles que les réseaux de biométhane ou les gaz de la 3ème famille selon la classification de l’EN 437.
L’EN 16348 s'applique généralement dans le cas d'un système de management de la sécurité et de l’intégrité des canalisations d’un réseau de gaz avec une pression de service maximale supérieure à 16 bars.
NOTE 2 Si des sections mineures du réseau de gaz fonctionnent avec une pression de service maximale supérieure à 16 bar, elles peuvent également être gérées par un SMS conformément à ce document. Pour la gestion de l'intégrité de la canalisation, la norme EN 16348 s'applique.
NOTE 3 Si des sections mineures d'un réseau de transport de gaz sont exploitées avec une pression de service maximale inférieure ou égale à 16 bars, ce document ou la norme EN 16348 peut être appliqué. Dans tous les cas, pour le système de gestion de l'intégrité de la canalisation, la norme EN 16348 s'applique.
La santé et la sécurité au travail sont exclues de ce document car elles sont couvertes par la législation nationale et les autres normes européennes/internationales (par exemple OHSAS 18001).
Ce document spécifie les principes de base communs aux infrastructures gazières. Il est important que les utilisateurs de la présente norme gardent à l’esprit qu’un code de pratique et/ou des normes nationales plus détaillées peuvent exister dans les pays membres du CEN. Ce document est destiné à s’appliquer conjointement avec ces normes nationales et/ou codes de pratique, qui détaillent les principes de base précités.
En cas de divergences entre des exigences plus restrictives dans la réglementation/législation nationale et les exigences de cette norme, la réglementation/législation nationale l’emporte, comme illustré dans le CEN/TR 13737 (toutes parties).
NOTE 4 Le CEN/TR 13737 (toute parties) contient :
- la clarification de la législation/réglementation applicable dans un pays ;
- si approprié, des exigences nationales plus restrictives ;
- un point de contact national pour obtenir les informations les plus récentes.

Infrastruktura za plin - Sistemi varnega upravljanja plinovodnih omrežij z najvišjim delovnim tlakom do vključno 16 bar

Ta evropski standard določa zahteve za razvoj in izvajanje sistema varnega upravljanja za upravljavce plinovodnih omrežij z najvišjim delovnim tlakom do vključno 16 barov v skladu s standardom EN 12007 (vsi deli). Ta evropski standard se nanaša na vse dejavnosti in postopke, ki so povezani z varnostnimi vidiki in jih izvaja operater distribucijskega sistema, vključno z dejavnostmi, ki so predane pogodbenikom. Opisani sistem varnega upravljanja se uporablja za infrastrukturo za distribucijo predelanih, nestrupenih in nekorozivnih plinov iz 2. družine plinov v skladu z razvrstitvijo v standardu EN 437, vključno z vbrizganimi plini iz nekonvencionalnih virov.  OPOMBA: Plini iz nekonvencionalnih virov so lahko biometan, vodik, plin iz skrilavca, sintetični plini in drugi.

General Information

Status
Withdrawn
Public Enquiry End Date
30-Nov-2016
Publication Date
08-Jan-2019
Withdrawal Date
28-Aug-2022
Technical Committee
Current Stage
9900 - Withdrawal (Adopted Project)
Start Date
11-Aug-2022
Due Date
03-Sep-2022
Completion Date
29-Aug-2022

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Gasinfrastruktur - Sicherheits-Management-Systeme für Gasnetze mit maximalem Betriebsdruck bis einschließlich 16 barInfrastructures gazières - Systémes de management de sécurité pour des reseaux de gaz pour pression maximale de service inférieure ou égale à 16 barGas infrastructure - Safety Management Systems for gas networks with maximum operating pressure up to and including 16 bar91.140.40Sistemi za oskrbo s plinomGas supply systemsICS:Ta slovenski standard je istoveten z:EN 15399:2018SIST EN 15399:2019en,fr,de01-februar-2019SIST EN 15399:2019SLOVENSKI

STANDARDSIST-TS CEN/TS 15399:20081DGRPHãþD
SIST EN 15399:2019
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15399
December
t r s z English Version

Gas infrastructure æ Safety Management System for Gas Networks with maximum operting pressure up to and including

s x bar Infrastructures gazières æ Systémes de management de sécurité pour des reseaux de gaz pour pression maximale de service inférieure ou égale à

s x bar

Gasinfrastruktur æ SicherheitsæManagement System für Gasnetze mit maximalem Betriebsdruck bis einschließlich

s x bar This European Standard was approved by CEN on
t x October
t r s zä

egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä

translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä

CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä

EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels

t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN

s w u { {ã t r s z ESIST EN 15399:2019
EN 15399:2018 (E) 2 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 interested parties ................................................ 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 Actions to address risks and opportunities ........................................................................................ 11 6.1.1 Safety risk management ............................................................................................................................ 11 6.1.2 Legal and other requirements ................................................................................................................. 12 6.2 SMS objectives and planning to achieve them ................................................................................... 12 7 Support of the SMS ....................................................................................................................................... 13 7.1 Resources ........................................................................................................................................................ 13 7.2 Competence .................................................................................................................................................... 13 7.3 Awareness ....................................................................................................................................................... 14 7.4 Communication ............................................................................................................................................. 14 7.5 Documented information of the SMS .................................................................................................... 15 7.5.1 General ............................................................................................................................................................. 15 7.5.2 Creating and updating ................................................................................................................................ 15 7.5.3 Control of documented information ..................................................................................................... 15 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 distribution infrastructure .................................................................................... 16 8.1.3 Construction, commissioning and decommissioning of the gas distribution infrastructure ................................................................................................................................................ 17 8.1.4 Operation of the gas distribution infrastructure .............................................................................. 18 8.1.5 Maintenance of the gas distribution infrastructure ........................................................................ 19 8.1.6 Gas infrastructure permanently out of service ................................................................................. 20 8.1.7 Emergency plans .......................................................................................................................................... 20 8.1.8 Outsourcing and purchasing .................................................................................................................... 21 8.1.9 Innovation and improvement .................................................................................................................. 22 8.2 Performance evaluation Monitoring, measurement, analysis and evaluation ...................... 22 8.2.1 Performance evaluation framework ..................................................................................................... 22 SIST EN 15399:2019

EN 15399:2018 (E) 3 8.2.2 Evaluation of compliance ........................................................................................................................... 23 8.3 Internal Audit ................................................................................................................................................. 23 8.3.1 Purpose of internal audits ......................................................................................................................... 23 8.3.2 Program and implementation of internal audits .............................................................................. 23 8.4 Management Review ................................................................................................................................... 24 8.5 Documentation .............................................................................................................................................. 24 9 Improvement of the SMS ............................................................................................................................ 24 9.1 Non-conformity and corrective action .................................................................................................. 24 9.2 Gas network operatorContinual improvement ................................................................................. 25 Annex A (informative)

Plan-Do-Check-Act (PDCA) methodology ............................................................ 26 Bibliography ................................................................................................................................................................. 27 SIST EN 15399:2019

EN 15399:2018 (E) 4 European foreword This document (EN 15399:2018) 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 June 2019, and conflicting national standards shall be withdrawn at the latest by June 2019. 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 CEN/TS 15399:2007. 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 input of gas to the distribution infrastructure starting at the boundary of the delivery station on the premises of the gas gas network operator, 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. 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, 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. SIST EN 15399:2019

EN 15399:2018 (E) 5 Introduction This document provides guidance on the establishment, implementation and maintenance of a safety management system, all in order to provide an efficient gas distribution infrastructure for the safe and secure distribution of gas; specifically, infrastructure operating at pressures up to and including 16 bar. The provisions refer to a general organisational scheme in which: — safety and — efficiency of gas distribution activity are addressed. This European Standard supports a gas network operator in the implementation of a management system following the Plan-Do-Check-Act (PDCA) methodology (see Annex A). It can be used in conjunction with ISO Management Systems 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 technical activities (design, construction, testing and commissioning/decommissioning, operation and maintenance, abandonment) for all of the gas network operator's gas distribution assets. In practice, this is expressed on methodologies and organisational features as well as technical aspects; — in demonstrating the competencies required in the activities mentioned above. It is at the gas network operator's discretion to include other objects and structures in their own management system. This European Standard also deals with the required competences for employees and any contractors involved in gas distribution activities. 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). SIST EN 15399:2019

EN 15399:2018 (E) 6 1 Scope This document specifies requirements on the development and implementation of a safety management system for operators of a gas network with a maximum operating pressure up to and including 16 bar according to EN 12007 (all parts). This document refers to all activities and processes related to safety aspects and performed by gas operators of a gas network with a maximum operating pressure up to and including 16 bar, including those activities entrusted to contractors. It includes safety-related provisions on operation of the gas network. The described safety management system is applicable to infrastructure for the distribution of processed, non-toxic and non-corrosive gas of the 2nd gas family as classified in EN 437, including injected gases from non-conventional sources. NOTE 1 Gases from non-conventional resources can be bio methane, hydrogen, shale gas, synthetic gases and others. This document can also apply for gas infrastructure conveying only gases from non-conventional sources, such as bio methane grids or gases of the 3rd family as classified in EN 437. For safety management and pipeline integrity management systems of gas networks with a maximum operating pressure above 16 bar generally EN 16348 applies. NOTE 2 If minor sections of the gas network are operated with a maximum operating pressure above 16 bar, these can also be managed by an SMS according to this document. For the pipeline integrity management EN 16348 applies. NOTE 3 If minor sections of a gas transmission network are operated with a maximum operating pressure up to and including 16 bar, this document or EN 16348 can be applied. In any case, for the pipeline integrity management system EN 16348 applies. Specific requirements for occupational health and safety are excluded from this document. National legislation and other European and/or international standards, e.g. OHSAS 18001, apply. This document specifies common basic principles for gas infrastructure. It is important that users of this standard are aware that more detailed national standards and/or code of practice may 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 standard, the national legislation/regulation takes precedence as illustrated in CEN/TR 13737 (all parts). NOTE 4 CEN/TR 13737 (all parts) contains: — clarification of relevant legislation/regulations applicable in a country; — if appropriate, more restrictive national requirements; — national contact point 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. SIST EN 15399:2019

EN 15399:2018 (E) 7 EN 12007-1, Gas infrastructure — Pipelines for maximum operating pressure up to and including 16 bar — Part 1: General functional requirements EN 12007-2, Gas infrastructure — Pipelines for maximum operating pressure up to and including 16 bar — Part 2: Specific functional requirements for polyethylene (MOP up to and including 10 bar) EN 12007-3, Gas infrastructure — Pipelines for maximum operating pressure up to and including 16 bar — Part 3: Specific functional requirements for steel EN 12007-4, Gas infrastructure — Pipelines for maximum operating pressure up to and including 16 bar — Part 4: Specific functional requirements for renovation EN 12007-5, Gas infrastructure — Pipelines for maximum operating pressure up to and including 16 bar — Part 5: Service lines — Specific functional requirements 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: — IEC Electropedia: available at http://www.electropedia.org/ — ISO Online browsing platform: available at http://www.iso.org/obp 3.1 gas network 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), grid operator. [SOURCE: EN 1594:2013, 3.3.1, modified] 3.2 gas infrastructure pipeline system including pipework and their associated stations or plants for the transmission and distribution of gas 3.3 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, 2.18] SIST EN 15399:2019

EN 15399:2018 (E) 8 3.4 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] 3.5 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 [SOURCE: EN 16348:2013, 3.5, modified] 3.6 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; — permit to work; — asset records and data quality; — third party activities. 3.7 safety management system SMS set of appropriate activities and practices by which a gas network operator preserves a safe and reliable gas transmission or distribution system and mitigates the consequences of incidents [SOURCE: EN 16348:2013, 3.7, modified] 3.8 hazard anything which is a source of potential loss of inventory or damage of the gas infrastructure SIST EN 15399:2019

EN 15399:2018 (E) 9 4 Context of the organization 4.1 Understanding the organization and its context The gas network operator shall establish, implement and maintain a 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). 4.2 Understanding the needs and expectations of interested parties The organization shall determine: — the interested parties that are relevant to the SMS; — the relevant requirements of these interested parties. 4.3 Safety Management System (SMS) 4.3.1 General The gas network operator shall define the policy, objectives and the organization of its safety management system. As a minimum it shall include the following: — safety of the public; — safety of personnel; — protection of urban, natural or industrial environment; — service life and reliability of gas infrastructure. 4.3.2 Determining the scope of the SMS To enable the gas network operator to achieve the required safety and reliability of the gas distribution infrastructure, the SMS shall consider the safety aspects of gas distribution activities: 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 8.1.7) 5) — maintenance, 6) — abandonment. NOTE The terms main processes and technical activities are equivalent in this document. b) the enabling processes which support the main processes and which typically comprise the following: 1) training; SIST EN 15399:2019

EN 15399:2018 (E) 10 2) purchasing; 3) communication; 4) documentation; 5) regulatory compliance; 6) innovation. Provisions shall be incorporated into the safety management system to: — ensure the safe operation of the gas distribution 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 gas network operator's top management shall provide visible and active leadership in developing and maintaining a culture that supports the management of safety. The top management shall define 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: a) be appropriate to the nature, scale and safety impacts of its activities; b) include commitments to: 1) the prevention of incidents; 2) ensure safe and reliable transporting of natural gas; 3) the mitigation of consequences for the public and the environment. c) include a commitment to comply with relevant legislation, regulations, company policies and procedures d) include a framework for setting and reviewing safety objectives and targets; e) be documented, implemented, maintained and communicated to all employees and contractors; f) be made available to stakeholders. SIST EN 15399:2019

EN 15399:2018 (E) 11 To implement the safety policy the gas network operator shall define, document and maintain objectives that take into account the safety aspects of the gas infrastructure (6.1.1), the legal and other requirements (6.1.2), 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 gas network operator's top management shall appoint in writing specific management representatives who, irrespective of other responsibilities, shall have defined 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 Actions to address risks and opportunities 6.1.1 Safety risk management 6.1.1.1 Identification and Management of safety aspects and risk analysis The gas network operator shall systematically identify and assess all reasonably foreseeable safety aspects in order to determine the likelihood and consequence of the actual risks that they present to the public/employees, the environment and gas infrastructure at each stage of the asset lifecycle. The level of detail required and sophistication of the assessment shall be proportional to the nature and complexity of safety aspect being considered. The assessment should be carried out using qualitative and/or quantitative techniques as considered appropriate by the gas network operator. The results of the hazard and risk assessments shall be used to identify and rank major risks. Risk management strategies should include prevention, protection and mitigation activities and risk reduction strategies should be established for all significant risks. 6.1.1.2 Recording of safety risks The results of the safety aspect and risk identification and assessment process should be recorded in a suitably formatted register that record details of: — identified hazards and their causes; — existing safety controls that are in place to manage the risk; — an assessment of the risk based on the likelihood and consequence of the risk occurring; — a description of any additional control measures that are required to reduce the risk to an acceptable level; — how responsibility for the day-to-day management of the risk(s) is considered. SIST EN 15399:2019

EN 15399:2018 (E) 12 6.1.1.3 Monitoring and Review of safety aspects and risks The gas network operator shall have processes to ensure that any new safety aspects and risks are identified and that existing risks are regularly reviewed to ensure that they are still valid. 6.1.1.4 Gathering and analysis of incidents The Safety Management System shall have appropriate arrangements for investigating gas safety 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. 6.1.1.5 Safety risk review Management shall review the risk register at a prescribed frequency. The review should as a minimum include the following: — analysis of accidents which may have occurred; — a review of safety aspects; — safety risk ranking and evaluation; — setting risk level objectives and targets — a review of the results of mitigating actions. ISO 31000 can give further guidance on risk management. 6.1.2 Legal and other requirements The gas network operator shall have a process to identify the legal requirements and other requirements that are applicable to the safety aspects of its activities. The gas network operator 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 gas network operator shall define a plan for achieving the objectives of the SMS. The plan shall ensure that: a) there is compliance with the safety policy; b) the identification, recording and follow-up of corrective or improvement actions are carried out ; c) there is provision for the control of abnormal situations including emergencies; d) the identification of training needs, their provision and the evaluation of their effectiveness; e) auditing the SMS is undertaken. The plan shall include as a minimum: — 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, SIST EN 15399:2019

EN 15399:2018 (E) 13 — 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 defined intervals and adjusted when necessary. 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 capital. The appointed management representative shall ensure that the organization and responsibilities for the implementation of the plan are defined, documented and communicated. 7.2 Competence On the basis of a thorough analysis of the main processes, the gas network operator shall determine the necessary amount of economic and human resources needed to carry out

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