This document provides requirements for the operation (“user manual”) of vehicles using CNG (fossil and renewable) as fuel, giving recommendations of good, safe and environmental friendly practices for users, including transit through specific areas (tunnels, ferries, etc.), refuelling, parking, and workshops, and also giving instructions in case of accident. This document also provides requirements concerning competence, knowledge and ability of workshops' operatives as well as any other matter...view more

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This Technical Specification describes specific functional recommendations for the safe
design, handling, installation and operation of unplasticized polyamide (PA-U) gas piping
systems with fusion jointing and mechanical jointing with
a)  a maximum operating pressure (MOP) up to and including 16 bar;
b)  an operating temperature between -20 °C and +40 °C.
This Technical Specification covers PA pipes single layer solid wall.
This Technical Specification should be applied complementar...
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    • Technical specification
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This document will specify the requirements for LNG for use as a fuel in marine engines. It will define the required values for all relevant parameters and the test method for each of these parameters

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    • Standard
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This European Standard gives general guidelines for the design, material selection, qualification, certification, and testing details for Liquefied Natural Gas (LNG) transfer hoses for offshore transfer or on coastal weather-exposed facilities for aerial, floating and submerged configurations or a combination of these. Whilst this European Standard is applicable to all LNG hoses, it is acknowledged that there may be further specific requirements for floating and submerged hoses.
The transfer ho...
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The objective of ISO 20257-1 is to provide functional guidelines and recommend practices for the design of floating liquefied natural gas (LNG) installations in order to have a safe and environmentally acceptable design and operation of floating LNG installations.
ISO 20257 gives functional guidelines for the design and operation of all floating LNG installations including those for the liquefaction, storage, vaporisation, transfer and handling of LNG.

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This document provides guidance to support organizations with the implementation of the European standards on CNG and LNG stations for fuelling vehicles (i.e. EN-ISO 16923:2018 and EN-ISO 16924:2018, respectively).
This document cross-references European standards to the international standards listed in EN-ISO 16923:2018 and EN-ISO 16924:2018 and links these standards to relevant European Directives, where applicable.

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    • Technical report
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    • Technical report
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This part of ISO 20088 describes a method for determining the resistance to cryogenic spray on Cryogenic Spillage Protection (CSP) systems. It is applicable where CSP systems are installed on carbon steel and will be in contact with cryogenic fluids. Liquid jet release is potentially formed at high pressure LNG handling section in LNG liquefaction unit, e.g., around 40 - 60 bar operating pressure. Due to high velocity discharge, it may cause severe condition for cryogenic protection coating by l...view more

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This part of ISO 20088 describes a method for determining the resistance to cryogenic spray on Cryogenic Spillage Protection (CSP) systems. It is applicable where CSP systems are installed on carbon steel and will be in contact with cryogenic fluids. Liquid jet release is potentially formed at high pressure LNG handling section in LNG liquefaction unit, e.g., around 40 - 60 bar operating pressure. Due to high velocity discharge, it may cause severe condition for cryogenic protection coating by l...view more

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    • Standard
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This technical standard specifies the design, minimum safety, functional and marking requirements, as well as the interface types and dimensions and testing procedures for dry-disconnect/connect couplings for LNG hose bunkering systems intended for use on LNG bunkering ships, tank trucks and shore-based facilities and other bunkering infrastructures. It is not applicable to hydraulically operated quick connect/disconnect couplers (QCDC) used for hard loading arms, which is covered in ISO 16904. ...view more

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This document specifies constructional, functional, testing and marking requirements, sizing and documentation of gas safety shut-off devices used in the pressure regulating stations in accordance with EN 12186 or EN 12279:
- for inlet pressures up to 100 bar and nominal diameters up to DN 400;
- for an operating temperature range from –20 °C to +60 °C,
which operate with fuel gases of the 1st and 2nd family in accordance with EN 437 in transmission and distribution networks and also in commerci...
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This document specifies constructional, functional, testing and marking requirements, sizing and
documentation of gas pressure regulators used in the pressure regulating stations in accordance with
EN 12186 or EN 12279:
- for inlet pressures up to 100 bar and nominal diameters up to DN 400;
- for an operating temperature range from -20 °C to +60 °C,
which operate with fuel gases of the 1st and 2nd family in accordance with EN 437 in transmission and
distribution networks and also in commercial a...
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This document provides the means for energy determination of natural gas by measurement or
by calculation, and describes the related techniques and measures that are necessary to take. The
calculation of thermal energy is based on the separate measurement of the quantity, either by mass
or by volume, of gas transferred and its measured or calculated calorific value. The general means of
calculating uncertainties are also given.
Only systems currently in use are described.
NOTE Use of such ...
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This document describes the precision that can be expected from the gas chromatographic method
that is set up in accordance with ISO 6974-1. The stated precision provides values for the magnitude
of variability that can be expected between test results when the method described in ISO 6974-1 is
applied in one or more competent laboratories. This document also gives guidance on the assessment
of bias.

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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 pr...
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ISO 23874:2006 describes the performance requirements for analysis of treated natural gas of transmission or pipeline quality in sufficient detail so that the hydrocarbon dewpoint temperature can be calculated using an appropriate equation of state. ISO 23874:2006 can be applied to gases that have maximum dewpoint temperatures (cricondentherms) between 0 °C and - 50 °C. The pressures at which these maximum dewpoint temperatures are calculated are in the range 2 MPa (20 bar) to 5 MPa (50 bar).
T...
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This part of ISO 20765 specifies a method of calculation for the volumetric and caloric properties of natural gases, natural gases containing synthetic admixture and similar mixtures, at conditions where the mixture can exist only as a gas.
The method is applicable to pipeline-quality gases within the ranges of pressure and temperature at which transmission and distribution operations normally take place. For volumetric properties (compression factor and density), the uncertainty of calculation...
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This document explains an approach for assessment of limit values for contaminants that may be found
in biomethane. Limit values are generally required as an adjunct to a biomethane specification (such as
parts 1 and 2 of EN 16723, or an equivalent National specification) or as part of a Network Entry
Agreement for injection of biomethane into gas networks.
The methodology employed will permit derivation of limit values based solely on consideration of
potential for impact on human health a...
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ISO 20765-2:2015 specifies a method to calculate volumetric and caloric properties of natural gases, manufactured fuel gases, and similar mixtures, at conditions where the mixture may be in either the homogeneous (single-phase) gas state, the homogeneous liquid state, or the homogeneous supercritical (dense-fluid) state.

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To revise the Annex ZA, and the associated body text only, of EN 12405-1 to ensure the alignment with the Directive 2014/32/EU.

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This European standard 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.
NOTE   For information on gas families and gas groups see EN 437.
This European standard does not cover gases conveyed on isolated networks.
For biomethane, additional requirements indicated in prEN 16723 1 apply.

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To revise the Annex ZA, and the associated body text only, of EN 14236 to ensure the alignment with the Directive 2014/32/EU.

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ISO 16924:2016 specifies the design, construction, operation, maintenance and inspection of stations for fuelling liquefied natural gas (LNG) to vehicles, including equipment, safety and control devices.
ISO 16924:2016 also specifies the design, construction, operation, maintenance and inspection of fuelling stations for using LNG as an onsite source for fuelling CNG to vehicles (LCNG fuelling stations), including safety and control devices of the station and specific LCNG fuelling station equi...
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ISO 16923:2016 covers the design, construction, operation, inspection and maintenance of stations for fuelling compressed natural gas (CNG) to vehicles, including equipment, safety and control devices.
ISO 16923:2016 also applies to portions of a fuelling station where natural gas is in a gaseous state and dispensing CNG derived from liquefied natural gas (LCNG) according to ISO 16924.
ISO 16923:2016 applies to fuelling stations supplied with natural gas as defined in local applicable gas comp...
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This document specifies the measuring conditions, requirements and tests for the construction,
performance and safety of class 1,0 axial and radial turbine gas meters with mechanical indicating
devices, herein after referred to as a meter(s), having in-line pipe connections for gas flow
measurement.
This document applies to turbine gas meters used to measure the volume of fuel gases of the 1st
and 2nd gas families, the composition of which is specified in EN 437, at maximum working
pressur...
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This European Standard specifies ranges, construction, performances, output characteristics and testing of rotary displacement gas meters (hereinafter referred to as RD meters or simply meters) for gas volume measurement.
This European Standard applies to rotary displacement gas meters used to measure the volume of fuel gases of at least the 1st, 2nd and 3rd gas families, the composition of which is specified in EN 437:2003+A1:2009, at a maximum working pressure up to and including 20 bar over ...
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This European Standard specifies the requirements and tests for the construction, performance, safety and production of class 1,5 diaphragm gas meters (referred to as meters) having co-axial single pipe, or two pipe connections, used to measure volumes of fuel gases of the 1st, 2nd and 3rd families in accordance with EN 437:2003+A1:2009, at maximum working pressures not exceeding 0,5 bar and maximum actual flow rates not exceeding 160 m3/h over a minimum ambient and gas temperature range of −10 ...view more

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ISO 16924:2016 specifies the design, construction, operation, maintenance and inspection of stations for fuelling liquefied natural gas (LNG) to vehicles, including equipment, safety and control devices.
ISO 16924:2016 also specifies the design, construction, operation, maintenance and inspection of fuelling stations for using LNG as an onsite source for fuelling CNG to vehicles (LCNG fuelling stations), including safety and control devices of the station and specific LCNG fuelling station equi...
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    • Standard
      84 pages
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    • Standard
      84 pages
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    • Standard
      83 pages
      French language

This standard specifies the requirements and test methods for natural gas, biomethane and blends of both at the point of use as automotive fuels.
This standard applies to the previously mentioned fuels irrespective of the storage state (compressed or liquefied).
NOTE: to check compliance with some requirements set by the standard, LNG or liquefied biomethane has to be re-gasified prior to testing.

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    • Standard
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    • Draft
      23 pages
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ISO 16923:2016 covers the design, construction, operation, inspection and maintenance of stations for fuelling compressed natural gas (CNG) to vehicles, including equipment, safety and control devices.
ISO 16923:2016 also applies to portions of a fuelling station where natural gas is in a gaseous state and dispensing CNG derived from liquefied natural gas (LCNG) according to ISO 16924.
ISO 16923:2016 applies to fuelling stations supplied with natural gas as defined in local applicable gas comp...
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    • Standard
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    • Standard
      46 pages
      French language

ISO 14532:2014 establishes the terms, definitions, symbols, and abbreviations used in the field of natural gas.
The terms and definitions have been reviewed and studied in order to cover all aspects of any particular term with input from other sources such as European Standards from CEN (The European Committee for Standardization), national standards, and existing definitions in the IGU Dictionary of the Gas Industry.
The definitive intention of ISO 14532:2014 is to incorporate the reviewed de...
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This Technical Report gives recommendations to ensure the quality and safety of domestic gas installations. This Technical Report covers pipe work, appliances installation, their combustion air supply and flue products exhaust commissioning, inspection and maintenance activities carried out by operatives.
This document addresses the following three main factors, which have an influence on gas safety in general:
a)   quality and safety of components of gas installations and gas appliances,
b)   qu...
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This International Standard sets requirements for LNG bunkering transfer systems and equipment used to bunker LNG fueled ships, which are not covered by the IGC Code. The scope of this standard includes the following five elements.
1) Hardware: Liquid and vapor transfer systems including; connections, rigid articulated piping, hoses, dry disconnect, ERS, and dry break-away emergency release systems and emergency shut systems (ESD stages 1 and 2 )
2) Operational Procedures: Including; communicati...
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This International Standard specifies methods for the calculation of gross calorific value, net calorific value, density, relative density, ross Wobbe index and net Wobbe index of natural gases, natural gas substitutes and other combustible gaseous fuels, when the composition of the gas by mole fraction is known. The methods specified provide the means of calculating the properties of the gas mixture at commonly used reference conditions. For the purpose of this International Standard the input ...view more

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This part of ISO 20088 Part 1 describes a method for determining the resistance to liquid cryogenic spillage on CSP systems. It is applicable where CSP systems are installed on carbon steel and will be in contact with cryogenic fluids.
Liquid nitrogen is used as the cryogenic medium since it has a lower boiling point than liquid natural gas or liquid oxygen. Additionally, it can be safely used for experiment.
Future parts of the standard will cover vapor phase and high pressure jet exposure co...
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This European Standard specifies the requirements and test methods for biomethane at the point of
entry into natural gas networks.

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    • Standard
      20 pages
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This European Standard specifies the design, minimum safety requirements and inspection and testing procedures for liquefied natural gas (LNG) transfer arms intended for use on conventional onshore (LNG) terminals 1). It also covers the minimum requirements for safe LNG transfer between ship and shore. Although the requirements for remote control power systems are covered, the standard does not include all
the details for the design and fabrication of standard parts and fittings associated with ...
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This standard covers the functional recommendations for design, construction, testing, commissionning, operation, maintenance and abandonment of underground gas storage facilities in solution-mined salt cavities up to and including the wellhead.  It specifies practices which are safe and environmentally acceptable. The necessary surface facilities for underground gas storage are described in prEN 1918-5. In this context "gas" is any hydrocarbon fuel which is in a gaseous state at a temperature o...view more

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This standard covers the functional recommendations for design, construction, testing, commissionning, operation, maintenance and abandonement of underground gas storage facilities in aquifers up to and including the wellhead. It specifies practices which are safe and environmentally acceptable. The necessary surface facilities for underground gas storage are described in prEN 1918-5. In this context "gas" is any hydrocarbon fuel which is in a gaseaous state at a temperature of 15°C and under a ...view more

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This European Standard gives guidelines for the design, construction and operation of all onshore liquefied natural gas (LNG) installations including those for the liquefaction, storage, vaporisation, transfer and handling of LNG. This European Standard is valid for the following plant types: - LNG export installations (plant), between the designated gas inlet boundary limit, and the ship manifold; - LNG receiving installations (plant), between the ship manifold and the designated gas outlet bou...view more

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This standard covers the functional recommendations for design, construction, testing, commissioning, operation, maintenance and abandonment of underground gas storage facilities in mined rock caverns up to and including the wellhead. It specifies practices which are safe and environmentally acceptable. The necessary surface facilities for an underground gas storage are described in EN 1918-5. In this context "gas" is any hydrocarbon fuel which is in a gaseous state at a temperature of 15°C and ...view more

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This standard covers the functional recommendations for the design, construction, testing, commissioning, operation, maintenance and abandonment of the surface facilities for underground gas storage, between the wellhead and the connection to the gas grid. In this context "gas" is any hydrocarbon fuel which is in a gaseous state at a temperature of 15°C and under a pressure of 1 bar. This includes natural gas (also called CNG) and LPG.

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This standard covers the functional recommendations for design, construction, testing, commissioning, operation, maintenance and abandonment of underground gas storage facilities in oil and gas fields up to and including the wellhead. It specifies practices which are safe and environmentally acceptable. The necessary surface facilities for underground gas storage are described in prEN 1918-5. In this context "gas" is any hydrocarbon fuel which is in a gaseous state at a temperature of 15°C and u...view more

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This European Standard specifies functional requirements for the design, construction, testing, commissioning/decommissioning, operation, maintenance and where appropriate calibration, together with suitable documented provisions for all new gas measuring systems and any major changes of existing systems.
This European Standard also specifies accuracy classes of measuring systems and thresholds applicable to these classes. Demonstration of compliance is achieved through the selection, installat...
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1.1 This European standard specifies the general requirements for the construction, performance and safety of ball valves and closed bottom taper plug valves. It also details the test methods and marking requirements.
It applies to metallic valves for domestic and commercial not directly buried installations inside or outside of buildings, using gases of the first, second and third family (specified in EN 437) and working up to
0,2 105 Pa, 0,5 105 Pa, 1 x 105Pa. 5 105 Pa and 20 x 105Pa.
...
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Part 3 of this Standard specifies the requirements and tests for the construction, performance, safety and conformity of flow computers used to meet the metrological and technical requirements of a high accuracy volume conversion device.

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This European Standard gives guidance on the characteristics of liquefied natural gas (LNG) and the cryogenic materials used in the LNG industry. It also gives guidance on health and safety matters. It is intended to act as a reference document for the implementation of other standards of CEN/TC 282 "Installations and equipment for liquefied natural gas". It is intended as a reference for use by persons who design or operate LNG facilities. (to be modified with the scope of ISO 16903)

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This European Standard describes the specific functional requirements for steel pipelines in addition to the general functional requirements of EN 12007-1 for maximum operating pressures up to and including 16 bar. This European Standard specifies common basic principles for gas supply systems. Users of this European Standard should be aware that more detailed national standards and/or codes of practice can exist in the CEN member countries.
This European Standard specifies common basic princip...
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This Technical Report contains, for each country affected, a national page where the relevant national legislation/regulations for the field of gas infrastructure are listed. The national page can further contain the relevant national standards and/or codes of practice and national bodies which can act as further sources of information, if an interested party needs further guidance.
The national page can, if necessary, indicate any requirements in the national legislation/regulations that are m...
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This Technical Report applies to safety and operational topics for equipment and pipework systems installed within industrial premises which may be used for process and non-process applications such as Heating, Power Generation, Incineration, etc.
It is applicable to a range of combustible gases used within an industrial environment. The gas plant may include normal combustion with air and/or oxygen, catalytic oxidation or cracking (e.g. as in a refinery).
The user of gas equipment and pipewor...
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    • Technical report
      57 pages
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