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This document provides guidelines for safe fuelling operations of vehicles that use liquefied natural gas (LNG) as a fuel for propulsion, covering the activities and procedures to be followed for safe operation. It provides procedures applicable to different fuelling systems and technologies.
NOTE The document has been based on the consideration that it is the employers’ duty to protect the health, safety and welfare of the employees (as organized in Directive 89/391 EEC).
As such, it is considered to be the responsibility of the driver’s employer to ensure that LNG vehicle drivers are properly trained.

This document describes the specific functional requirements for the transportation of gases (gaseous energy carriers) through service lines in addition to the general functional requirements of EN 12007-1 for:
a) a maximum operating pressure (MOP) up to and including 16 bar;
b) an operating temperature between -20 °C and +40 °C;
c) non-corrosive gases including natural gas, biomethane gas, hydrogen gas and mixtures of these gases where technical evaluation has ensured that operating conditions or constituents or properties of the gas do not affect the safe operation and maintenance of the service line.
It applies to their design, construction, commissioning, decommissioning, operation, maintenance, extension and other associated works including safety and environmental aspects. The service line is the physical asset comprising of pipework from the gas main branch saddle or top tee to the outlet of the distribution system operator’s nominated point(s) of delivery (for example: isolation valve, regulator, meter connection or combination of regulator and isolation valve).
Specific functional requirements for:
— polyethylene pipelines are given in EN 12007-2;
— steel pipelines are given in EN 12007-3;
— polyamide (PA-U) pipelines are given in CEN/TS 12007-6;
— pipework for buildings are given in EN 1775;
— pressure regulating installations are given in EN 12279 or EN 12186;
— pressure testing, commissioning and decommissioning are given in EN 12327;
— safety management system (SMS) and pipeline integrity management system (PIMS) are given in EN 17649 [11].
For guidance on methodology for methane emissions quantification for gas transmission, distribution and storage systems and LNG terminals, see CEN/TS 17874 [8].
This document represents the recommendations at the time of its preparation. It does not apply retrospectively to installations before the publication date unless specifically stated.
This document specifies common basic principles for gas infrastructure. Users of this document are expected to be aware that there can exist more detailed national standards and/or codes of practice 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.
European Legislation/regulations and national legislation is obligatory for all member states. In the event of terms of additional requirements in legislation/regulation than in this document, CEN/TR 13737 (all parts) illustrates these terms.
CEN/TR 13737 gives:
— description of all legislations/regulations applicable in a member state;
— if appropriate, more restrictive national requirements;
— a national contact point for the latest information.

This document establishes specific functional requirements of stations for the injection of hydrogen fuel gas into transmission and distribution systems for fuel gases (natural gas, biomethane, SNG, hydrogen fuel gas, fuel gas mixtures, etc.; see Figure 1) in accordance with European technical rules that ensure the interoperability of systems in addition to the general functional requirements of prEN 17928-1. This document complements prEN 17928-1 by specifying the technical safety requirements to be observed with respect to the chemical and physical properties of hydrogen fuel gas. It furthermore complements the requirements on pipelines specified in EN 12007-3 and EN 1594 by describing the specific requirements with respect to hydrogen. Additionally, it explains how to handle hydrogen measurements during the course of injection. Requirements for the technical equipment for mixing hydrogen as an additive gas into the gas flow of the gas transmission and distribution system are not covered by this document. However, requirements for the resulting gas mixture are specified in 5.2, which specifies requirements for the operation of the injection station. This document represents the recommendations at the time of its preparation. This document does not apply to injection stations operating prior to the publication of this document. This document specifies common basic principles for gas infrastructure. Users of this document are expected to be aware that more detailed national standards and/or codes of practice can 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 terms of additional requirements in national legislation/regulation than in this document, CEN/TR 13737 (all parts) illustrates these terms. CEN/TR 13737 (all parts) gives: - legislation/regulations applicable in a member state; - if appropriate, more restrictive national requirements; - a national contact point for the latest information.

This document establishes specific functional requirements for injection stations for biomethane into gas transmission and distribution systems operated with gases of the second gas family in accordance with EN 437 in addition to the general functional requirements of prEN 17928-1.
This document represents the recommendations at the time of its preparation. This document does not apply to injection stations operating prior to the publication of this document.
This document complements prEN 17928-1 by specifying the technical safety requirements to be observed in respect of the chemical and physical properties of biomethane.
This document specifies common basic principles for gas infrastructure. Users of this document are expected to be aware that more detailed national standards and/or codes of practice can 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 terms of additional requirements in national legislation/regulation than in this document, CEN/TR 13737 (all parts) illustrates these terms.
CEN/TR 13737 (all parts) gives:
— legislation/regulations applicable in a member state;
— if appropriate, more restrictive national requirements;
— a national contact point for the latest information.

This document establishes the functional requirements for stations for the injection of biomethane, substitute natural gas (SNG) and hydrogen fuel gas into gas transmission and distribution systems operated with fuel gases (natural gas, biomethane, SNG, hydrogen fuel gas, fuel gas mixtures) in accordance with European technical rules that ensure the interoperability of systems. Figure 1 describes the general approach including all the relevant functions that can be installed in different configurations. This document also applies to refeeding stations that feed such gases back into upstream gas supply networks; see Figure 2. This document represents the state of the art at the time of its preparation. This document does not apply to injection stations operating prior to the publication of this document. This document specifies common basic principles for gas infrastructure. Users of this document are expected to be aware that more detailed national standards and/or codes of practice can 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 terms of additional requirements in national legislation/regulation than in this document, CEN/TR 13737 (all parts) illustrates these terms. CEN/TR 13737 (all parts) gives: - legislation/regulations applicable in a member state; - if appropriate, more restrictive national requirements; - a national contact point for the latest information.

This document specifies the technical delivery conditions for corrosion-resistant alloy seamless tubular products for casing, tubing, coupling stock and accessory material (including coupling stock and accessory material from bar) for two product specification levels:
— PSL-1, which is the basis of this document;
— PSL-2, which provides additional requirements for a product that is intended to be both corrosion and cracking resistant for the environments and qualification method specified in Annex G and in the ISO 15156 series.
At the option of the manufacturer, PSL-2 products can be provided in lieu of PSL-1.
NOTE 1 The corrosion-resistant alloys included in this document are special alloys in accordance with ISO 4948-1 and ISO 4948-2.
NOTE 2 For the purpose of this document, NACE MR0175 is equivalent to the ISO 15156 series.
NOTE 3 Accessory products can be manufactured from coupling stock and tubular material, or from solid bar stock or from bored and heat heat-treated bar stock as covered in Annex F.
This document contains no provisions relating to the connection of individual lengths of pipe.
This document contains provisions relating to marking of tubing and casing after threading.
This document is applicable to the following five groups of products:
a) group 1, which is composed of stainless alloys with a martensitic or martensitic/ferritic structure;
b) group 2, which is composed of stainless alloys with a ferritic-austenitic structure, such as duplex and super-duplex stainless alloy;
c) group 3, which is composed of stainless alloys with an austenitic structure (iron base);
d) group 4, which is composed of nickel-based alloys with an austenitic structure (nickel base);
e) group 5, which is composed of bar only (Annex F) in age-hardened (AH) nickel-based alloys with austenitic structure.
NOTE 4 Not all PSL-1 categories and grades can be made cracking resistant in accordance with the ISO 15156 series and are, therefore, not included in PSL-2.