This document specifies requirements on the development and implementation of a safety management system for operators of gas transmission and/or distribution infrastructure.
This document refers to all activities and processes related to safety aspects and performed by operators of a gas network, 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 transmission and distribution of processed, non-toxic and non-corrosive gas of the 2nd gas family as classified in EN 437 , including injected gases.
NOTE 1 Injected gases can be bio methane, hydrogen, synthetic gases and others.
This document can also apply for gas infrastructure conveying only other gases such as bio methane, hydrogen, syntactic gases or gases of the 3rd family as classified in EN 437.
Specific requirements for either transmission or distribution can be found in de specific parts for transmission and distribution.

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The document provides the specific methods and requirements for the assessment of environmental, economic and social performances of a civil engineering works while taking into account the civil engineering work’s functionality and technical characteristics. The primary objective of this document is to help in the decision making for a project by providing a standardized method for enabling comparability of scheme options. The document has not been designed to be used for the development of sustainability labels however, this use is not precluded.
The assessment of environmental and economic performances of a civil engineering works is based on Life Cycle Assessment (LCA), Life Cycle Cost (LCC), Whole-Life Cost (WLC) and other quantified environmental and economic information. The approach to the assessment covers all stages of the civil engineering works life cycle and includes all civil engineering works related construction products, processes and services, used over its life cycle. The document is applicable to new and existing civil engineering works and refurbishment projects. The environmental performance is based on data obtained from Environmental Product Declarations (EPD) and additional indicators.
The assessment of social performance differs from the assessment of economic and environmental aspects because it requires both quantitative and descriptive approaches.
The document provides requirements for:
-   the description of the object of assessment;
-   the system boundary that applies at the civil engineering works level;
-   the procedure to be used for the analysis;
-   definition of the indicators to be declared, information to be provided and the way in which they are collated and reported,
-   presentation of the results in reporting and communication;
-   the data necessary for the application of the standard and calculation.
Whenever the asset includes building(s) as part of the civil engineering works the building(s) will be assessed using EN 15978 for environmental performance, EN 16309 for social performance and EN 16627 for economic performance.

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The document provides the specific methods and requirements for the assessment of environmental, economic and social performances of a civil engineering works while taking into account the civil engineering work’s functionality and technical characteristics. The primary objective of this document is to help in the decision making for a project by providing a standardized method for enabling comparability of scheme options. The document has not been designed to be used for the development of sustainability labels however, this use is not precluded.
The assessment of environmental and economic performances of a civil engineering works is based on Life Cycle Assessment (LCA), Life Cycle Cost (LCC), Whole-Life Cost (WLC) and other quantified environmental and economic information. The approach to the assessment covers all stages of the civil engineering works life cycle and includes all civil engineering works related construction products, processes and services, used over its life cycle. The document is applicable to new and existing civil engineering works and refurbishment projects. The environmental performance is based on data obtained from Environmental Product Declarations (EPD) and additional indicators.
The assessment of social performance differs from the assessment of economic and environmental aspects because it requires both quantitative and descriptive approaches.
The document provides requirements for:
-   the description of the object of assessment;
-   the system boundary that applies at the civil engineering works level;
-   the procedure to be used for the analysis;
-   definition of the indicators to be declared, information to be provided and the way in which they are collated and reported,
-   presentation of the results in reporting and communication;
-   the data necessary for the application of the standard and calculation.
Whenever the asset includes building(s) as part of the civil engineering works the building(s) will be assessed using EN 15978 for environmental performance, EN 16309 for social performance and EN 16627 for economic performance.

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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
The described SMS is applicable to infrastructure for the conveyance of processed, non-toxic and non-corrosive natural gas according to EN ISO 13686 and non-conventional gases such as biomethane and hydrogen and substitute natural gases including injected gases.
This document covers also EN 16726, which specifies gas quality characteristics, parameters and their limits, for gases classified as group H that are to be transmitted, injected into and from storages, distributed and utilized. The requirements and test methods for biomethane at the point of entry into natural gas network are covered by EN 16723 1.
This document can apply for gas infrastructure conveying gases of the 3rd gas family as classified in EN 437.
Specific requirements for occupational health and safety are excluded from this document. For these, 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 document are aware that more detailed national standards and/or codes 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 document, the national legislation/regulation takes precedence as illustrated in CEN/TR 13737 (all parts).
NOTE 1   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.

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