CEN - European Committee for Standardization

This document provides requirements and guidelines for comparing the life cycles of bio-based products with their fossil-based equivalents.
NOTE   The term "equivalents" generally refers to the "functional equivalence".
This document builds on existing LCA methodology and provides requirements and guidance on specific topics relevant for making well-balanced comparisons.

This document provides guidelines for the characterization of waterlogged archaeological wood to support decision-making processes for its preservation.
This document can be applied for the management of wood discovered in waterlogged environments, including terrestrial and aquatic (marine and freshwater) sites, as a basis for designing conservation strategies (e.g. reburial, in situ preservation, post-excavation storage). In the case of composite artefacts made of wood and other materials, this document is applicable only for the wooden components. Methods for conservation, site protection and monitoring for reburial as well as in situ preservation are beyond the scope of this document.

This document specifies a method for the sampling of NO2 in ambient air using diffusive sampling followed by extraction and analysis by colourimetry or ion chromatography (IC). It can be used for the NO2 measurement in a concentration range of approximately 3 µg/m3 to 130 µg/m3 [12]. A sample is typically collected for a period of 1 to 4 weeks [14], with exposure periods depending on the design of the samplers and the concentration levels of NO2.
Several sorbents can be used for trapping NO2 in ambient air using a diffusive sampler [15]. This document specifies the application of triethanolamine as the reagent.
This document describes the application of a tube-type sampler (with either a cylindrical or a slightly conical tube), a badge-type sampler and a radial-type sampler.
The relative expanded uncertainty of NO2 measurements performed using these tube-type diffusive samplers can potentially be lower than 25 % for individual measurements. When aggregating results to form annual average values, the relative expanded uncertainty can be further reduced to levels below 15 % due to the reduction of random effects on uncertainty [9].
NOTE   NO2 passive samplers are also employed to measure NOx with the addition of an oxidant to convert ambient NO into NO2. A second NO2 sampler is also deployed without the oxidant and the concentration of NO is determined from the difference of the two samplers [16].

This document is applicable to the heavy rail system.
This document defines the requirements for the provision, visibility, readability, maintenance and testing of a specific set of ERTMS trackside boards associated with the following DMI and ETCS track conditions:
—   ETCS stop marker
—   ETCS location marker
—   level transition, corresponding to transitions between ETCS levels
—   lower pantograph
—   pantograph lowered
—   raise pantograph
—   neutral section announcement
—   neutral section
—   end of neutral section
—   GSM-R network border marker
—   no traction system fitted announcement
—   no traction system fitted indication
—   traction system AC 25 kV 50 Hz announcement
—   traction system AC 25 kV 50 Hz indication
—   traction system AC 15 kV 16,7 Hz announcement
—   traction system AC 15 kV 16,7 Hz indication
—   traction system DC 3 kV announcement
—   traction system DC 3 kV indication
—   traction system DC 1,5 kV announcement
—   traction system DC 1,5 kV indication
—   traction system DC 600/750 V announcement
—   traction system DC 600/750 V indication
—   activate the audible warning device (horn) indication
—   safe stopping area announcement
—   safe stopping area indication for start
—   safe stopping area indication for end
—   inhibition of brake announcement/indication for start/indication for revocation
—   level crossing marker
NOTE 1 the brake MBs apply for any of the three brake types (eddy current, magnetic shoe, regenerative), whereas the exact type concerned would be known by the driver via existing Route knowledge.
The following ETCS track conditions are outside the scope of this Standard:
—   Safe stopping area semi-continuous indication for in-between
—   Non-stopping area announcement
—   Non-stopping area announcement
—   Non stopping area indication for start
—   Non stopping area indication for end
—   Non stopping area semi-continuous indication for in-between
—   Close air conditioning intake announcement
—   Close air conditioning intake indication
—   Open air conditioning intake announcement
—   Open air conditioning intake indication
This document includes the arrangement of the boards and their interface with existing systems (track, cab design including cab sight lines, visibility by the driver and train head lamps).
Mobile, backlit and temporary signs are not within the scope of this document.
The application of ERTMS trackside boards is not within the scope of this document.
Sighting requirements are not within the scope of this document. The sighting process needs to be implemented in accordance with national rules.

This document specifies the requirements and test methods for durability and strength of hardware for vertical and horizontal pivot windows and door height windows (including pivot hinges and central locking systems).
If the hardware manufacturer would like to classify an integrated restrictor function, the pivot hinges can be tested in accordance with EN 13126-5.
This document does not apply to manoeuvring devices which are covered in EN 13126-2, EN 13126-3, and EN 13126-14.

This document specifies the requirements and describes the test methods for check valves for water mist firefighting systems.
Check valves allow the passage in the direction of flow and they prevent flow in the reverse direction.
This document is applicable to check valves installed in the pipework of water mist firefighting systems.

This document covers hinged/pivoted and sliding doorsets with engaging fasteners (e.g. latches, deadbolts) for pedestrian use. It defines the test methods to determine the forces to open/close doors and to engage/release and lock/unlock the building hardware using a key or handle. It is only applicable to the manual operation of doorsets.
These doorsets can include:
—   emergency or panic exit devices;
—   door closing devices.
NOTE   The use of some windows involves engaging fasteners (e.g. latches, deadbolts) and can be tested in accordance with this document. Throughout the text where “door leaf”/”door leaves” is written this can also be read as “casements”/”sashes”.

This document specifies requirements and test methods for spray pattern sprinklers with a k-factor of at least K160, extended coverage (EC) sprinklers of at least K80, extended coverage storage sprinklers of at least K200 and control mode special application (CMSA) sprinklers. This document only covers sprinkler types up to K360.
This document does not apply to concealed, conventional, flat spray, flush and recessed sprinklers.

The objective of implementing the pan-European in-vehicle emergency call system (eCall) is to automate the notification of a traffic accident, wherever in Europe, with the same technical standards and the same quality of services objectives by using ‘Public Land Mobile Networks’(PLMN), which supports the European pre-assigned emergency destination address (see normative references) and to provide a means of manually triggering the notification of an incident.
This document specifies the general operating requirements and intrinsic procedures for in-vehicle emergency call (eCall) services in order to transfer an emergency message from a vehicle to a Public Safety Answering Point (PSAP) in the event of a crash or emergency, via an eCall communication session and to establish a voice channel between the in-vehicle equipment and the PSAP.
Private third party in-vehicle emergency supporting services can also provide a similar eCall function by other means. The provision of such services are defined in EN 16102, and are outside the scope of this document.
The communications protocols and methods for the transmission of the MSD are not specified in this document.
This document specifies the operating requirements for an eCall service. An important part of the eCall service is a Minimum Set of Data (MSD). The operating requirements for the MSD are determined in this document, but the form and data content of the MSD is not defined herein. A common European MSD is determined in EN 15722.
This document does not specify whether eCall is provided using embedded equipment or other means (for example in the case of aftermarket equipment).

1.1   This document specifies requirements and tests for LTSF sterilizers, which use a mixture of low temperature steam and formaldehyde as sterilizing agent, and which are working below ambient pressure only.
These sterilizers are primarily used for the sterilization of heat labile medical devices in health care facilities.
1.2   This document specifies minimum requirements:
-   for the performance and design of sterilizers intended to deliver an LTSF process capable of sterilizing medical devices;
-   for the equipment and controls of these sterilizers which are needed for operation, control and monitoring of the sterilization processes, and which can be used for validation of the sterilization process.
1.3   This document specifies further test equipment and test procedures used to verify conformance of the equipment design and performance specified by this document.
1.4   This document does not specify requirements and tests for decontamination systems for use in rooms, enclosures, or environmental spaces.

This document specifies safety requirements relating to materials, construction, performance, packaging and labelling of soother holders.
NOTE 1   See B.1.
It includes test methods for the mechanical and chemical requirements specified.
This document covers products for children from birth to 36 months of age, alike the soothers to which these items are connected to.
This document is intended to provide safety requirements for soother holders. All products that allow the attachment of a soother intended for babies and young children to any other object are included in the scope. The soother holder has a holding device at one end for the soother, a garment fastener that attaches to any other product, e.g. the child’s garment and a connecting device linking these parts. The safety requirements of products that a soother holder attaches to are not considered in this standard.
Where a soother holder is considered to have significant play value, the soother holder is expected to meet the safety requirements for toys as stated in the Toy Directive 2009/48/EC [6] in addition to those in this document.
NOTE 2   See B.2.

This document specifies transport and security services for communication systems for meters, sensors, and actuators, used to provide metering services.
This document specifies secure communication capabilities by design and supports the building of a secure system architecture.
This document is applicable to the protection of consumer data to ensure privacy.
This document is intended to be used with the lower layer specifications determined in the relevant parts of the EN 13757 series.

This document specifies application services for communication systems for meters, sensors, and actuators, used to provide metering services.
This document specifies application protocols, especially the M-Bus application protocol.
This document is intended to be used with the lower layer specifications determined in the relevant parts of the EN 13757 series.

This document specifies test methods available for the measurement of thermoregulatory properties of textile materials for use in garments and gives guidance on the most suitable methods for selection where choices are available to the user.
This document also establishes classification of the thermoregulatory properties in three performance levels.
This document does not apply to garments or clothing intended to be worn by babies, infants and children whose thermoregulation within the body has not yet been fully developed.
This document does not apply to the thermoregulatory properties of personal protective equipment (PPE) and clothing items or textile products for which a standard already specifies a particular requirement.
This document does not apply also to heated textiles, phase change materials (PCM) and similar smart materials for thermoregulation, for which CEN ISO/TR 23383 can give better guidance.

The proposed Part 13 will specify a DATEX II platform-independent model for expression of intelligent transport system device status and fault data. It will follow the EN 16157-1 methodology and reuse common concepts from EN 16157-2 and EN 16157-7.
It will define a UML model with a corresponding data dictionary and XML Schema.
The model will define a device publication which identifies static data, a device status publication, and a device faults publication.
Devices in scope are any that participate in intelligent transport systems.
This specification may be used in system-to-system exchanges about device status and faults, for example a traffic management system that performs operational control of devices may provide information about the status and faults of those devices to a separate technology status and fault management system.

This document specifies an open and extensible standard for residential, commercial, and industrial control and automation applications using the EN 14908-1 control network protocol and related protocols (EN 14908-2 to EN 14908-9) to provision and manage IoT devices, to access and update data from the devices, and to aggregate data from diverse devices and protocols for delivery to external applications and services.
The  web services as specified in this document are implemented on a central gateway or edge server that communicates with multiple sensor, actuator, and controller edge devices using one or more edge protocols such as EN 14908-1, and also interfaces with one or more enterprise and cloud services or applications.

This document specifies the general requirements of data exchange and interfaces for thermal energy meters.
This document is applicable to unidirectionally and bidirectionally transmitting thermal energy meters.
This document applies also to networks with up to 250 meters, for which a master unit with AC mains supply is necessary to control the M-Bus. In these cases, the document is only applicable in conjunction with EN 13757-2 (physical and link layer) and EN 13757-3 (application layer).
For wireless thermal energy meter communications, this document is only applicable in conjunction with EN 13757-4, which describes several alternatives of walk/drive-by readout via a mobile station or by using stationary receivers or a network.
NOTE   Thermal energy meters are instruments intended for measuring the energy which in a heat-exchange circuit is absorbed (cooling) or given up (heating) by a liquid called the heat-conveying liquid. The meter indicates thermal energy in legal units.

This document specifies a method using headspace gas chromatography and mass selective spectroscopy (HS-GC-MS) for detection and quantification of benzene in components of textile products.

This document specifies the characteristics of screws, pan head, offset cruciform recess, threaded to head, in corrosion resisting steel, passivated, metric.
Classification: 490 MPa /425 °C

This document specifies the required characteristics, tests and tooling applicable to female electrical contacts 009, type A, crimp, class S, used in elements of connection according to EN 3155-002.
It is used together with EN 3155-001.
The associated male contacts are specified in EN 3155-008.

The aim of a MIF and the associated justifications is to ensure that manufacturing and/or inspection operations are realized in a compliant and reproducible manner.
The purpose of this document is to provide a guide to the elaboration of the MIF and the associated justifications by:
—   positioning them within the framework:
o   of a programme and its objectives, on the one hand;
o   of the realization of a product, on the other;
—   describing, until production of the product ceases:
o   the principles and conditions applying to the elaboration and then the validation of the MIF within the framework of the industrialization process;
o   the principles and conditions applying to the elaboration and then the validation of the MIJF associated with the MIF, within the framework of the industrialization process;
o   the principles and change and control conditions applying to the MIF and the MIJF.
This document can be used for all processes or sets of processes implemented on a tangible product, which may incorporate software associated with the product. It does not apply to purely software product, commercial-off-the-shelf product (catalogue part) or service (intangible product).
This document applies more particularly to serial production. Nevertheless, the principles and conditions set forth in this document may be applied, making any necessary adaptations, to unit production or to the realization of products to meet development needs (prototypes, demonstrators, etc.).
This document covers the MIF and the MIJF of a product, including the activities related to procurement and the associated industrial means in particular.

This document specifies the rating conditions, tolerances and the method of presenting performance data of refrigerant compressors to enable comparison of different compressors.
This document is applicable to single-stage compressor and two-stage compressor data with or without an additional intermediate pressure inlet.
The performance data of compressors used with R-744 in transcritical operation are covered in this document.
The data relating to the refrigerating capacity, heating capacity and power absorbed include requirements for part-load operation where applicable.

This document specifies safety and performance requirements for powered rescue tools manufactured after the date of publication.
This document is applicable to powered rescue tools which are intended for use by the firefighting and rescue services, principally for cutting, crushing, spreading, squeezing, pushing or pulling the structural parts of road vehicles, ships, trains, aircraft and building structures involved in accidents. This document is not applicable to hydraulic power packs covered by 2000/14/EC.
Powered rescue tools consist of tool(s) and the necessary system components (e.g. energy source, drive system and prime mover) and intended accessories, as defined in Clause 3.
This document deals with all significant hazards, hazardous situations or hazardous events relevant to the machinery, when it is used as intended and under conditions or misuse which are reasonably foreseeable by the manufacturer.
NOTE 1   The aim of powered rescue tools is to assist the firefighting and rescue services while extracting the casualties or to create a working space for paramedical services taking the local conditions into account.
This document does not include:
-   tools with pneumatic drive systems or pneumatic energy sources;
-   tools which are single acting (for example spring /gravity return jacks, powered struts, etc.).
It is not applicable to additional requirements for:
a)   operation in severe conditions (e.g. extreme environmental conditions such as temperatures outside the range –20 °C and +55 °C, corrosive environment, tropical environment, contaminating environments, strong magnetic fields, potentially explosive atmospheres, underwater use);
b)   the risk directly arising from the means provided for the portability, transportability, mobility and decommissioning of powered rescue tools during periods of their operation;
c)   generic tools such as, but not limited to, powered drills, angle grinders, saws, not solely intended for extrication purposes;
d)   tools intended to lift and/or hoist, not solely intended for extrication purposes.
NOTE 2   EN 13731:2007 deals with lifting bag systems for fire and rescue services.
NOTE 3   For the EU/EEA other Directives can be applicable to the equipment in the scope, for example the Electro Magnetic Compatibility Directive.

This document specifies a method for the determination of total mercury (Hg) in foodstuffs using direct atomic absorption spectrometry after thermal decomposition in an oxygen or air flow and concentration by amalgam formation. The method is applicable for solid and liquid samples.
This method was tested in a interlaboratory study carried out on seven different materials with a mercury concentration in the range from 0,005 mg/kg to 5,20 mg/kg and successfully validated in this range.
The following foodstuffs were analysed:
—   Saithe (dried);
—   Celery (dried);
—   Wheat noodle powder;
—   Wild mushrooms (dried);
—   Pig liver (dried);
—   Cacao powder;
—   Tuna fish (dried).
The lower limit of the method’s applicability varies depending on the food matrix and the water content of the foodstuff. It is a laboratory-specific value and is defined by the laboratory when calculating the limit of quantification (see 9.2).

This document specifies a test method for the qualification and quantification of organotin compounds by applying gas chromatography coupled with mass spectrometry. This test method is applicable to all types of footwear materials except metal hardware (see ISO/TR 16178).

This document specifies the requirements for the performance of compression testing machines for the measurement of the compressive strength of concrete test specimen in accordance with EN 12390 3 or cores in accordance with EN 12504-1.
Other additional or different requirements may apply for different uses.

This document specifies a method for the determination of total mercury in foodstuffs by cold vapour atomic fluorescence spectrometry (AFS) after pressure digestion.
This method was tested in an interlaboratory study carried out in connection with the pressure digestion method EN 13805 on seven different materials with a mercury concentration in the range from 0,006 mg/kg to 5,38 mg/kg and successfully validated in this range.
The following foodstuffs were analysed:
—   Saithe (dried);
—   Celery (dried);
—   Wheat noodle powder;
—   Wild mushrooms (dried);
—   Pig liver (dried);
—   Cacao powder;
—   Tuna fish (dried).
The lower limit of the method’s applicability varies depending on the food matrix and the water content of the foodstuff. It is a laboratory-specific value and is defined by the laboratory when calculating the limit of quantification (see 9.2).

This document specifies requirements and test methods for functional parameters of closures used in combination with vials and when pierced by an injection needle.
NOTE            Functional testing with spikes is specified in ISO 8536-2, ISO 8536-6, ISO 8362-1 and ISO 8362-4.

This document contains guidelines to be used in the process of drafting requirements of cybersecurity certification schemes for sectoral ICT services and systems. It includes all steps necessary to define, implement and maintain such requirements.

This document specifies a method for determining the bulk density of solid biofuels using a standardized measuring container. This method is applicable to all pourable solid biofuels with a nominal top size of maximum 63 mm while the maximum particle length is 200 mm. For fuels with a nominal top size larger than 63 mm, a different method is described.
Bulk density is not an absolute value; therefore, conditions for its determination have to be standardized in order to gain comparative measuring results.
NOTE            Bulk density of solid biofuels is subject to variation due to several factors such as vibration, shock, pressure, biodegradation, drying, and wetting. Measured bulk density can therefore deviate from actual conditions during transportation, storage, or transhipment.

This document specifies a method for the determination of total mercury in foodstuffs by cold vapour atomic absorption spectrometry (AAS) after pressure digestion.
This method was tested in an interlaboratory study carried out in connection with the pressure digestion method EN 13805 on seven different materials with a mercury concentration in the range from 0,005 mg/kg to 5,06 mg/kg and successfully validated in the range from 0,015 mg/kg to 5,06 mg/kg.
The following foodstuffs were analysed:
—   Saithe (dried);
—   Celery (dried);
—   Wheat noodle powder;
—   Wild mushrooms (dried);
—   Pig liver (dried);
—   Cacao powder;
—   Tuna fish (dried).
The lower limit of the method’s applicability varies depending on the food matrix and the water content of the foodstuff. It is a laboratory-specific value and is defined by the laboratory when calculating the limit of quantification (see 9.2).

This document specifies a method for checking the variation of attenuation of an optical cable during temperature cycling.

This document specifies the characteristics of screws, pan head, six lobe recess, coarse tolerance shank, medium length thread, in alloy steel, cadmium plated.
Classification: 1 100 MPa   / 235 °C  .

This document specifies safety requirements and their verification for the design and construction of power take-off (PTO) drive shafts and their guards linking a tractor or self-propelled machinery to the first fixed bearing of recipient machinery. It describes methods for the elimination or reduction of risks which need specific requirements including such risks arising from misuse, reasonably foreseeable by the manufacturer. It is applicable only to those PTO drive shafts and guards mechanically linked to the shaft by at least two bearings.
In addition, it specifies the type of information on safe working practices to be provided by the manufacturer.
This document does not deal with:
-   the guards totally covering, but not mechanically linked to, the PTO drive shaft;
-   the mechanical characteristics of PTO drive shafts, overrun devices and torque limiters;
-   general hazards which are dealt with in EN ISO 4254-1:2015 (see introduction).
Environmental aspects have not been considered in this document.
This document is not applicable to PTO drive shafts and their guards which are manufactured before the date of publication of this document by CEN.

This document specifies requirements and test methods for factory made thermally insulated bonded steel shut-off valve assemblies for hot water networks in accordance with EN 13941-1, comprising a steel valve, valve extension pipes, polyurethane (PUR) foam thermal insulation and a casing of polyethylene.
This document applies to steel valve assemblies with an internal pressure of maximum 2,5 MPa.
The principles of this document can be applied to thermal insulated bonded steel valve assemblies with internal pressures higher than 2,5 MPa, provided that special attention is paid to the effects of pressure.
The steel shut-off valve assembly can also include the following additional elements: measuring wires, spacers and diffusion barriers.

This document specifies requirements and test methods for straight lengths of factory made thermally insulated bonded twin pipe assemblies for directly buried hot water networks in accordance with EN 13941-1, comprising two steel service pipes, polyurethane (PUR) foam thermal insulation and a casing of polyethylene.
The twin pipe assembly can also include the following additional elements: Measuring wires, spacers and diffusion barriers.

This document describes test methods to determine the resistance of stainless steel surgical and dental hand instruments against autoclaving, corrosion and thermal exposure.

This document specifies requirements and test methods for factory made thermally insulated bonded fitting assemblies for hot water networks in accordance with EN 13941-1, comprising a steel service pipe, in most cases a steel fitting, polyurethane (PUR) foam thermal insulation and a casing of polyethylene.
The fitting assembly can also include the following additional elements: measuring wires, spacers and diffusion barriers.
This document specifies the characteristics of the following fitting assemblies:
-   bends, T-pieces, and reducers.
This document applies to fitting assemblies with a design pressure of at least 1,6 MPa.

This document (CEN/TS 12697 51:2025) specifies a test method for measuring the surface shear strength for airfield surface courses.
The surface shear strength will depend on the depth of the surface course together with the properties of the surface course material.
The binder course material and any bonding agent applied between the two layers can have an influence on the test result for, in particular, ultra-thin surface course.

This document specifies a test method for the resistance to bending of a test piece, made of a valve assembled together with two pipes and placed between supports, when subjected to internal pressure.
This document is applicable to valves with a polyethylene (PE) body for use with pipes having a nominal outside diameter from greater than 63 mm up to and including 400 mm and intended for the transport of fluids.
When specified in the product standard, this document can be applied to valves of material different than PE.

The management of electronic transport regulations (METR) provides a means for METR users to obtain trustworthy, authoritative, machine-interpretable, publicly available and transport-related information for the use of the road network, in order to provide safer and more efficient, sustainable, comfortable, and equitable transport services.
The scope of METR includes both rules that are relatively static (e.g. static speed limits) as well as those that are dynamic (e.g. variable speed limits, signalized intersections). Where appropriate, METR incorporates existing documents (e.g. ISO/TS 19091 for signalized intersections).
This document defines terms specific to the ISO 24315 series on the management of electronic transport regulations.

This document specifies a procedure for determining the magnitude of pavement surface megatexture by measuring the surface profile and calculating a megatexture descriptor from this profile. The technique is designed to give meaningful and accurate measurements and descriptions of pavement megatexture for various purposes, such as for the prediction of the acoustic quality of the pavement or the assessment of the rolling resistance.
Since there is an overlap between megatexture and the surrounding ranges, megatexture descriptors unavoidably have a certain correlation with corresponding measures in those ranges. This document specifies measurements and procedures which are in relevant parts compatible with those in ISO 13473-1[4], ISO 8608[6] and EN 13036-5[7].

ISO 17633:2017 specifies requirements for classification of tubular flux and metal cored electrodes and rods, based on the all-weld metal chemical composition, the type of core, shielding gas, welding position and the all-weld metal mechanical properties, in the as-welded or heat-treated conditions, for gas shielded and non-gas shielded metal arc welding of stainless and heat-resisting steels.
ISO 17633:2017 is a combined standard providing for classification utilizing a system based upon nominal composition or utilizing a system based upon alloy type.
a) Clauses, subclauses, and tables which carry the suffix letter "A" are applicable only to products classified using the system based upon nominal composition.
b) Clauses, subclauses, and tables which carry the suffix letter "B" are applicable only to products classified using the system based upon alloy type.
c) Clauses, subclauses, and tables which do not have either the suffix letter "A" or the suffix letter "B" are applicable to all products classified in accordance with this document.
ISO 17633:2017 does not use pulsed current for determining the product classification.

This document specifies requirements and test methods for fitting and steel valve assemblies of factory made thermally insulated bonded twin pipe assemblies for hot water networks in accordance with EN 13941-1, comprising two steel service pipes, in most cases steel fittings and/or steel valves, steel components, polyurethane (PUR) foam thermal insulation and one casing of polyethylene.
NOTE   Steel components can be e.g. fixing bars.
The twin pipe assembly can also include the following additional elements: measuring wires, spacers and diffusion barriers.
This document covers the following assemblies:
-   fittings: bends, T-pieces and reducers;
-   valves for main line.
This document applies to fitting assemblies with an internal pressure of at least 1,6 MPa and steel valve assemblies with a maximum internal pressure of 2,5 MPa.

This document specifies requirements for underground pipework systems used to transfer liquid fuels and their vapours at petrol filling stations. Minimum performance requirements covering fitness for purpose, safety and environmental protection are given.
This document is applicable to pipework made from thermoplastics, which can include some degree of reinforcement, and to flexible metal pipework. It does not apply to fibre reinforced thermosets, commonly referred to as glass fibre reinforced plastic (GRP), nor to rigid metals.
This document is applicable to:
-   delivery pipes from tanks to dispensers, including positive pressure, vacuum suction and siphon modes;
-   fill pipes from road tankers to tanks;
-   vapour recovery and vent pipework;
-   pipework for secondary containment;
-   fittings.
It does not apply to pipework for use with liquefied petroleum gas.

This document specifies requirements for factory made thermally insulated bonded steel service valve assemblies for filling, draining, venting and operation purposes for directly buried hot and cold water networks in accordance with EN 13941-1, comprising a steel service valve, steel service pipe, polyurethane (PUR) foam thermal insulation and a casing of polyethylene (PE).
This document applies of steel service valve assemblies with an internal pressure of maximum 2,5 MPa.
The principles of this document can be applied to thermal insulated bonded steel service valve assemblies with internal pressures higher than 2,5 MPa, provided that special attention is paid to the effects of pressure.
The steel service valve assembly can also include the following additional elements: measuring wires, spacers, and diffusion barriers.