CEN - European Committee for Standardization

This document specifies guidelines for testing metallic sheet materials to determine the stress-strain characteristics at high strain rates. This document covers the use of elastic-bar-type systems.
This test method covers the strain-rate range above 102 s−1.
NOTE            This testing method is also applicable to tensile test-piece geometries other than the flat test pieces considered here.

This document specifies the minimum requirements for inspection at time of filling of battery vehicles and multiple-element gas containers (MEGCs) for compressed and liquefied gases.
The elements of battery vehicles and MEGCs covered by this document are:
—   seamless steel or seamless aluminium alloy cylinders or tubes, and
—   composite cylinders or tubes (hoop-wrapped or fully-wrapped)
with a water capacity up to 3000 l.
This document is not applicable to MEGCs using tanks as elements.
This document is not applicable to the automotive components of a battery trailer.
NOTE   Acetylene battery-vehicles are covered by EN 13720 [1].

This document gives the technical rationale for the requirements and parameters for petrol as defined in CEN/TS 18227, with a minimum oxygen content of 3,7 % (m/m) and a maximum of 8,0 % (m/m). This fuel has maximum 20,0 % (V/V) ethanol and/or of 22 % (V/V) fuel ethers with 5 or more carbons.
NOTE 1   This document is directly related to CEN/TS 18227 and will be updated once further publications take place.
NOTE 2   For the purpose of this document, the terms “% (m/m)” and “% (V/V)” are used to represent respectively the mass fraction and the volume fraction.

This document is a product specification, giving performance requirements for emergency safety eyewash units connected to the water supply. It is applicable to plumbed-in eyewash units only.
Requirements are given in respect of the performance, installation, adjustment and marking of the eyewash units, as well as installation, operation and maintenance instructions to be given by the manufacturer.
NOTE   Attention is drawn to national regulations which can apply in respect of the installation and use of eyewash units.

This document is a product specification, giving performance requirements for emergency safety body showers connected to the water supply. It is applicable to plumbed-in body showers only, located in laboratory facilities.
Requirements are given in respect of the performance, installation, adjustment and marking of the showers as well as installation, operation and maintenance instructions to be given by the manufacturer.
NOTE   Attention is drawn to national regulations which might apply in respect of the installation and use of emergency safety showers.

This document specifies the characteristics of a collar, swage locking, shear type, in aluminium alloy 3003, with a maximum operating temperature of 80 °C for aerospace application. This document is applicable in combination with EN 6050, EN 6100 or EN 6120.

This document specifies a test method for determining the intrinsic characteristics of sound diffraction of added devices installed on the top of road traffic noise reducing devices. The test method prescribes measurements of the sound pressure level at several reference points near the top edge of a road traffic noise reducing device with and without the added device installed on its top. The effectiveness of the added device is calculated as the difference between the measured values with and without the added devices, correcting for any change in height (the method specified gives the acoustic benefit over a simple barrier of the same height; however, in practice the added device can raise the height and this could provide additional screening depending on the source and receiver positions).
This document is applicable to:
—   the preliminary qualification, outdoors or indoors, of added devices to be installed on road traffic noise reducing devices;
—   the determination of sound diffraction index difference of added devices in actual use;
—   the comparison of design specifications with actual performance data after the completion of the construction work;
—   the verification of the long-term performance of added devices (with a repeated application of the method);
—   the interactive design process of new products, including the formulation of installation manuals.
The test method can be applied both in situ and on samples purposely built to be tested using the method described here.
Results are expressed as a function of frequency, in one-third octave bands between 100 Hz and 5 kHz. If it is not possible to get valid measurements results over the whole frequency range indicated, the results are given in the restricted frequency range and the reasons of the restriction(s) are clearly reported. A single-number rating is calculated from frequency data.
For indoor measurements, see Annex D.

This document specifies the characteristics of self-locking serrated shank nuts in FE-PA2601, for aerospace applications.
Classification: 1 100 MPa /650 °C .

This document specifies the laboratory method for measuring the airborne sound insulation performance of road traffic noise reducing devices in reverberant conditions. It covers the assessment of the intrinsic performance of barriers that can reasonably be assembled inside the testing facility described in EN ISO 10140-2 and EN ISO 10140-4.
This method is not intended for the determination of the intrinsic characteristics of airborne sound insulation of noise reducing devices to be installed on roads in non-reverberant conditions.

This document gives recommendations for the selection, use, care and maintenance of hearing protectors.

This document specifies the characteristics of close tolerance pins, swage locking, 100° countersunk reduced head, shear type, in aluminium alloy 7050-T73 with chemical film, inch series, with a maximum operating temperature of 80 °C for aerospace application.

This document specifies a normalized traffic noise spectrum for the evaluation and assessment of the acoustic performance of devices designed to reduce traffic noise near roads.

This document specifies a method of testing the fire resistance of "fire-proof" electrical cables.

This document specifies the characteristics, qualification and acceptance requirements for O-rings in low compression set fluorocarbon rubber (FKM) to EN 2798.

The eighth edition of ICAO Doc 9303 progresses from using the first edition of the ISO/IEC 19794 series for encoding biometric reference data in electronic machine-readable travel documents to using the ISO/IEC 39794 series for this purpose. This document specifies how to use ISO/IEC 39794-4 for fingerprint image data stored in electronic machine-readable travel documents.

This document specifies methods for measuring the transfer impedance of a cable.
It is intended to be used together with EN 3475-100 and IEC 62153-4-3.

This document specifies a methodology for describing and managing interactions and a format for digital communication between actors in any use case associated with the management of an asset during all life cycle stages.
It provides:
—     a methodology that describes an interaction framework for a use case;
—     an appropriate way to map responsibilities and interactions that provides a process context for information flow;
—     a format in which the interaction framework is specified and executed.
This document is intended to promote secure, verifiable, traceable and high-quality digital IDM communication between actors during all phases of the life cycle of assets, facilitate interoperability between software applications used, and to provide a basis for data- and process-driven information exchange and traceability of communication.

This document specifies the technical and quality assurance requirements for externally threaded fasteners in material FE-PA92HT (A286) of tensile strength class 900 MPa at room temperature, maximum test temperature of material 650 °C, either manufactured by machining from bar or forging.
Primarily for aerospace applications, it is applicable to such externally threaded fasteners when referenced on the product standard or drawing.

This document specifies a test method for measuring a quantity representative of the intrinsic characteristics of sound reflection from road noise reducing devices, the sound reflection index, and then calculate a single-number rating for sound absorption from it.
This document is applicable to:
—   the determination of the intrinsic characteristics of sound absorption of noise reducing devices to be installed along roads, to be measured either on typical installations alongside roads or on a relevant test specimen section;
—   the determination of the intrinsic characteristics of sound absorption of road traffic noise reducing devices in actual use under direct sound field conditions;
—   the comparison of design specifications with actual performance data after the completion of the construction work;
—   the verification of the long-term performance of road traffic noise reducing devices (with a repeated application of the method).
This document does not apply to:
—   the determination of the intrinsic characteristics of sound absorption of road traffic noise reducing devices to be installed in reverberant conditions, e.g. inside tunnels or deep trenches.
Results for the sound reflection index are expressed as a function of frequency, in one-third octave bands between 200 Hz and 5 kHz, for qualification purposes. If it is not possible to get valid measurement results over the whole frequency range indicated, the results are given in a restricted frequency range, and the reasons for the restriction(s) are clearly reported.
For indoor measurements, see Annex D.

The scope of the present document is to provide the elements needed for elaborating the programme execution logic and drafting the execution plan for the realization of a product.
NOTE 1   In this document, the term “logic” alone is sometimes used for “execution logic”.
NOTE 2   In this document, the term “product” is used to designate the object of the program concerned, and the term “system” is used to designate the product for anything related to system engineering.
NOTE 3   The product is also considered a “system-of-interest” and its enabling systems are also taken into account.
The execution logic and plan enable customers/suppliers to reach an agreement on how their respective processes and activities can be organized.
The aim is to enable each actor in the programme to manage their activities with sufficient visibility of the sequencing of the other stakeholdersʼ activities.
This document belongs to the documents supporting EN 9200 relating to the programme management specification.
The present document describes the principles of programme execution logic and defines the corresponding management requirements. This description is supplemented:
—   on the one hand, in terms of execution logic principles, by:
—   the challenges of a basic logic common to all actors (synchronization);
—   the applicable criteria to set up this basic logic;
—   the translation of this logic into the programme processes;
—   on the other hand, in terms of implementing the execution logic, by:
—   the procedures for practical implementation of the management requirements defined in EN 9200;
—   adaptations of the logic according to the various constraints and specificities of the programme, and justification of these adaptations;
—   the consistency between the basic logic at system level and the logics at subsystem and constituent levels.
The breakdown of clauses as used in this document gives a gradual understanding of the approach to be adopted to construct an execution logic. For instance:
—   Clause 5 presents the end-purpose of a programme execution logic as well as the associated basic concepts and the constituents of this logic;
—   Clause 6 describes and characterizes the process for building the logic;
—   Clause 7 concerns change control to the execution logic;
—   Clause 8 concentrates on the importance of capitalization and lessons learned.
This document applies to aeronautical, space and defence programmes. The principles can be extended to other areas of activity.
It applies to realization of a single product, of several samples or of a series. It applies to any customer/supplier level, while ensuring consistency between successive levels.
The principles described concern all programme actors, from initial expression of need through to closure of the programme.

This document specifies requirements and test methods for E20 petrol marketed and delivered as such, containing a minimum oxygen content of 3,7 % (m/m) and a maximum of 8,0 % (m/m). The fuel has a maximum of 20,0 % (V/V) ethanol.
It is applicable to fuel for use in spark-ignition petrol-fuelled engines and vehicles.
This document is complementary to EN 228, which describes unleaded petrol containing an oxygen content up to 3,7 % (m/m) and a maximum ethanol content of 10 % (V/V).
NOTE 1   For general petrol engine vehicle warranty, E20 petrol might not be suitable for all vehicles and it is advised that the recommendations of the vehicle manufacturer are consulted before use. E20 petrol might need a validation step to confirm the compatibility of the fuel with the vehicle, which for some existing engines might still be needed.
NOTE 2   For the purposes of this document, the terms “% (m/m)” and “% (V/V)” are used to represent respectively the mass fraction, µ, and the volume fraction, φ.

This document specifies methods for measuring the structural return loss of symmetrical cables for digital data transmission.
It is applicable together with EN 3475-100 and EN 50289-1-11. Attention is drawn in particular to correction procedures detailed in EN 50289-1-11:2016, Annex B, to minimize negative effects of cable preparation in the purpose of high frequency range measurements.

This document specifies the identification of radionuclides and the measurement of their activity in soil using in situ gamma spectrometry with portable systems equipped with germanium or scintillation detectors.
This document is suitable to rapidly assess the activity of artificial and natural radionuclides deposited on or present in soil layers of large areas of a site under investigation.
This document can be used in connection with radionuclide measurements of soil samples in the laboratory (see ISO 18589-3) in the following cases:
—     routine surveillance of the impact of radioactivity released from nuclear installations or of the evolution of radioactivity in the region;
—     investigations of accident and incident situations;
—     planning and surveillance of remedial action;
—     decommissioning of installations or the clearance of materials.
It can also be used for the identification of airborne artificial radionuclides, when assessing the exposure levels inside buildings or during waste disposal operations.
Following a nuclear accident, in situ gamma spectrometry is a powerful method for rapid evaluation of the gamma activity deposited onto the soil surface as well as the surficial contamination of flat objects.
NOTE            The method described in this document is not suitable when the spatial distribution of the radionuclides in the environment is not precisely known (influence quantities, unknown distribution in soil) or in situations with very high photon flux. However, the use of small volume detectors with suitable electronics allows measurements to be performed under high photon flux.

This document specifies the general requirements for the measurement and evaluation of human exposure to hand-transmitted shock vibrations. For the purposes of this document, hand-transmitted shock vibration is any impactive or impulsive vibration that the machine or tool produces as a sequence of single events (isolated shock vibrations) linked by periods of no, or lower vibration.
This document specifies parameters for the evaluation of machinery emissions of hand-transmitted shocks in the frequency range covered by ISO 5349-1 (nominally the frequency range covered by the octave bands from 8 Hz to 1 000 Hz).
NOTE            It is recognised that shock vibration often includes substantial high-frequency vibration energy. Therefore, reporting of information on hand-transmitted shock at higher frequencies that those specified in this document can be valuable.

This document specifies the laboratory method for measuring the sound absorption performance of road traffic noise reducing devices in reverberant conditions. It covers the assessment of the intrinsic sound absorption performance of devices that can reasonably be assembled inside the testing facility described in EN ISO 354.
This method is not intended for the determination of the intrinsic characteristics of sound absorption of noise reducing devices to be installed on roads in non-reverberant conditions.
The test method in EN ISO 354 referred to in this document excludes devices that act as weakly damped resonators. Some devices will depart significantly from these requirements and in these cases, care is needed in interpreting the results.

This document specifies a test method for measuring a quantity representative of the intrinsic characteristics of airborne sound insulation for road traffic noise reducing devices: the sound insulation index.
This document is applicable to:
—   determination of the intrinsic characteristics of airborne sound insulation of noise reducing devices to be installed along roads, to be measured either on typical installations alongside roads or in laboratory conditions;
—   determination of the intrinsic characteristics of airborne sound insulation of road traffic noise reducing devices in actual use;
—   comparison of design specifications with actual performance data after the completion of the construction work;
—   verification of the long-term performance of road traffic noise reducing devices (with a repeated application of the method);
—   interactive design process of new products, including the formulation of installation manuals.
This document does not apply to:
—   the determination of the intrinsic characteristics of airborne sound insulation of road traffic noise reducing devices to be installed in reverberant conditions, e.g. inside tunnels or deep trenches or under covers.
Results for the sound insulation index are expressed as a function of frequency in one-third octave bands, between 200 Hz and 5 kHz for qualification purposes. If it is not possible to get valid measurement results over the whole frequency range indicated, the results are given in a restricted frequency range and the reasons for the restriction(s) are clearly reported.
For indoor measurements, see Annex D.

This document specifies the requirements and general principles governing the biological evaluation of medical devices within a risk management process according to ISO 14971.
This document applies to the biological evaluation of medical devices that have direct contact or indirect contact with either:
—     a patient's body during intended use or reasonably foreseeable misuse; or
—     the body of other users who are not patients, if the medical device is intended for personal protection (e.g. medical gloves, surgical masks).
Biological evaluation assesses the biological safety of the medical device by considering the biological risks associated with:
—     constituents of a medical device; and
—     tissue-device interactions (including physical effects).
The biological evaluation specified in this document can address the biological safety of the medical device, considering the life cycle from design and development through initial use of the finished medical device to final decommissioning or withdrawal from use. The biological evaluation considers both the biological safety of the finished device in first use, and the significance of any changes to the medical device which can occur throughout the life cycle. However, the evaluation of risks related to environmental impacts of decommissioning of medical devices are not within the scope of this document. This document does not mandate re-testing of medical devices that are already on the market and have established and acceptable safety profiles (see 6.6.2).
This document can be useful to support clinical or usability evaluations of medical devices. For example, a biological evaluation is a pre-requisite for conducting a clinical trial. This means that principles outlined in this document can be applied to the evaluation of prototype or development stage devices, as well as to finished medical devices.
Other parts of the ISO 10993 series cover specific aspects of biological evaluation, such as chemical characterization, biological testing, sample preparation, animal welfare and toxicological risk assessment.
For some types of medical devices, specific requirements from other standards (outside the ISO 10993 series) can be considered with a justification for the approach taken if there are differences between the requirements of the ISO 10993 series and those provided in other standards. For example, the ISO 18562 series provides specific requirements for biological evaluation of breathing gas pathway medical devices and ISO 7405 provides specific requirements for biological evaluation of dental devices.
The evaluation of risks related to infectious agents [e.g. bacteria, moulds, yeasts, viruses, transmissible spongiform encephalopathy (TSE) agents] is not within the scope of this document.
NOTE 1        The evaluation of bacterial endotoxins is addressed by ISO 11737-3.
NOTE 2        The evaluation of risks related to viruses, TSE agents and other pathogens originating from materials of animal origin is addressed by the ISO 22442 series.

This document specifies the characteristics of O-rings in fluorocarbon rubber (FKM), low compression set, hardness 80 IRHD, for aerospace applications.
They are intended to be used in air, mineral / synthetic oil and fuel systems.
Operating conditions - Temperature:
a)   Continuous operation: −20 °C to +225 °C;
b)   Static applications minimum temperature of use: −50 °C.
Limitation: not used with phosphoric ester type hydraulic fluids (permanent or temporary immersion).

This document specifies the characteristics of a collar, swage locking, shear type, in aluminium alloy 6061-T7, with a maximum operating temperature of 80 °C for aerospace application.
This document is applicable in combination with EN 6050, EN 6100 or EN 6120.

This document specifies a method for determining the colour fastness to water of leather of all kinds at all stages of processing.

This document specifies a test method for the determination of fatty acid methyl ester (FAME) content in diesel fuel or domestic heating fuel by mid-infrared (IR) spectrometry and a transmission sample cell, which applies to FAME contents of the three measurement ranges as follows:
-   range A: for FAME contents ranging from approx. 0,05 % (V/V) to approx. 3 % (V/V);
-   range B: for FAME contents ranging from approx. 3 % (V/V) to approx. 20 % (V/V);
-   range C: for FAME contents ranging from approx. 20 % (V/V) to approx. 50 % (V/V).
Principally, higher FAME contents can also be analysed if diluted; however, no precision data for results outside the specified range is available at present.
This test method was verified to be applicable to samples which contain FAME conforming to EN 14214. Reliable quantitative results are obtained only if the samples do not contain any significant amounts of other interfering components, especially esters and other carbonyl compounds which possess absorption bands in the spectral region used for quantification of FAME. If such interfering components are present, this test method is expected to produce higher values.
NOTE 1   For the purposes of this document, the term “% (V/V)” is used to represent the volume fraction (φ) of a material.
NOTE 2   For conversion of grams FAME per litre (g FAME/l) to volume fraction, a fixed density for FAME of 883,0 kg/m3 is adopted.
WARNING — The use of this document can involve hazardous materials, operations and equipment. This document does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this document to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

This document specifies a method for the determination of total bound nitrogen (ST-TNb) in water of various origins: groundwater, surface water and wastewater, in a measuring range of concentration generally between 0,5 mg/l and 150 mg/l of ST-TNb using the small-scale sealed tube method. Different measuring ranges of small-scale sealed tube methods can be required.
The measuring ranges can vary depending on the type of small-scale sealed tube method of different manufacturers.
It is up to the user to choose the small-scale sealed tube test with the appropriate application range or to adapt samples with concentrations exceeding the measuring range of a test by preliminary dilution.
NOTE      The results of a small-scale sealed tube test are most precise in the middle of the application range of the test.
All small-scale sealed tube methods are based on a heated alkaline potassium persulfate oxidation in a heating block at 100 °C and different digestion times are applicable. Chromotropic colour reaction is applied, depending on the typical operating procedure of the small-scale sealed tube used, see Clause 9.

This document specifies the PKI method for the calculation of the methane number of a gaseous fuel, using the composition of the gas as sole input for the calculation.
This document applies to natural gas (and biomethane) and their admixtures with hydrogen.

This document specifies the MNC method for the calculation of the methane number of a gaseous fuel, using the composition of the gas as sole input for the calculation.
This document applies to natural gas (and biomethane) and their admixtures with hydrogen.

This document specifies a method for the qualification and quantification of certain quinoline derivatives in textile products by means of extraction with methanol and gas chromatography with mass selective detector or liquid chromatography with mass selective detector.
The method is applicable to all kinds of textile products consisting of natural or artificially dyed textile fibres and fabrics. It is further applicable to dyestuff powder used as textile auxiliary for dyeing and printing.

This document specifies two methods for determining the heat resistance of patent leather.
Method A makes use of a modified lastometer, while Method B uses the “Zwik” apparatus. Both methods are applicable to patent leathers for all end uses.

The ISO 11929 series specifies a procedure, in the field of ionizing radiation metrology, for the calculation of the “decision threshold”, the “detection limit” and the “limits of the coverage interval” for a non-negative ionizing radiation measurand when counting measurements with preselection of time or counts are carried out. The measurand results from a gross count rate and a background count rate as well as from further quantities on the basis of a model of the evaluation. In particular, the measurand can be the net count rate as the difference of the gross count rate and the background count rate, or the net activity of a sample. It can also be influenced by calibration of the measuring system, by sample treatment and by other factors.
ISO 11929 has been divided into four parts covering elementary applications in this document, advanced applications on the basis of the ISO/IEC Guide 3-1 in ISO 11929-2, applications to unfolding methods in ISO 11929-3, and guidance to the application in ISO 11929-4.
This document covers basic applications of counting measurements frequently used in the field of ionizing radiation metrology. It is restricted to applications for which the uncertainties can be evaluated on the basis of the ISO/IEC Guide 98-3 (JCGM 2008). In Annex A, the special case of repeated counting measurements with random influences is covered, while measurements with linear analogous ratemeters are covered in Annex B.
ISO 11929-2 extends the former ISO 11929:2010 to the evaluation of measurement uncertainties according to the ISO/IEC Guide 98-3:2008/Suppl 1:2008. ISO 11929-2 also presents some explanatory notes regarding general aspects of counting measurements and on Bayesian statistics in measurements.
ISO 11929-3 deals with the evaluation of measurements using unfolding methods and counting spectrometric multi-channel measurements if evaluated by unfolding methods, in particular, for alpha- and gamma‑spectrometric measurements. Further, it provides some advice on how to deal with correlations and covariances.
ISO 11929-4 gives guidance to the application of the ISO 11929 series, summarizes shortly the general procedure and then presents a wide range of numerical examples. Information on the statistical roots of ISO 11929 and on its current development may be found elsewhere[33][34].
The ISO 11929 series also applies analogously to other measurements of any kind especially if a similar model of the evaluation is involved. Further practical examples can be found, for example, in ISO 18589[1], ISO 9696[2], ISO 9697[3], ISO 9698[4], ISO 10703[5], ISO 7503[6], ISO 28218[7] and ISO 11665[8].
NOTE            A code system, named UncertRadio, is available for calculations according to ISO 11929-1 to ISO 11929-3. UncertRadio[31][32] can be downloaded for free from https://www.thuenen.de/en/institutes/fisheries-ecology/fields-of-activity/marine-environment/coordination-centre-of-radioactivity/uncertradio. The download contains a setup installation file which copies all files and folders into a folder specified by the user. After installation one has to add information to the PATH of Windows as indicated by a pop‑up window during installation. English language can be chosen and extensive “help” information is available.

This document is applicable to the following groups of machines, auxiliary equipment and their combinations:
-   palletizers;
-   depalletizers;
-   auxiliary equipment incorporated in or linked to the operations of palletizers and depalletizers;
-   conveying systems which are part of palletizers or depalletizers;
-   palletizers combined with functions of machines which are covered by other parts of EN 415, but detailed requirements are only provided for palletizing functions.
The individual machines are described in 3.2. Auxiliary equipment is described in 3.3.
This document deals with safety requirements for machine design, transport, installation, commissioning, operation, adjustment, maintenance and cleaning of palletizers, depalletizers, auxiliary equipment and conveying systems which are part of palletizer or depalletizer. The extent to which hazards, hazardous situations and events are covered is indicated in Annex A.
Exclusions:
This document is not applicable to the following machines:
-   machines that were manufactured before the date of publication of this document by CEN;
-   conveyors that connect palletizers and depalletizers with machines that are not in the scope of this document.
Conveyors in the scope of this document also fall in the scope of EN 619:2022, however, this document describes the additional or specific hazards for conveyors fitted into palletizers and depalletizers and so the requirements of this document take precedence over the requirements of EN 619:2022.
This document does not consider the following hazards:
—   the use of palletizers and depalletizers in a potentially explosive atmosphere;
—   the health, safety or hygiene hazards associated with the products that are contained in the unit load handled by palletizers and depalletizers except for the spillage of hazardous substances caused by the malfunction of a machine.

This document specifies a method for the determination of total bound nitrogen (ST-TNb) in water of various origins: groundwater, surface water, and wastewater, in a measuring range of concentration generally between 0,5 mg/l and 220 mg/l of ST-TNb using the small-scale sealed tube method. Different measuring ranges of small-scale sealed tube methods can be required.
The measuring ranges can vary depending on the type of small-scale sealed tube method of different manufacturers. It is up to the user to choose the small-scale sealed tube with the appropriate application range or to adapt samples with concentrations exceeding the measuring range of a test by preliminary dilution.
NOTE      The results of a small-scale sealed tube are most precise in the middle of the application range of the test.
All small-scale sealed tube methods are based on a heated alkaline potassium persulfate oxidation in a heating block. Different digestion temperatures, 100 °C or 120 °C or 170 °C, and different digestion times are applicable. Dimethylphenol colour reactions are applied, depending on the typical operating procedure of the small-scale sealed tube used, see Clause 9.

This document specifies requirements and gives guidelines for designing accessible software for people with the widest range of physical, sensory and cognitive abilities, including those who are temporarily or situationally disabled, and the elderly. It addresses software considerations for accessibility that complement general design for usability as addressed by parts of the ISO 9241 series, especially ISO 9241-11 and ISO 9241-210.
This document is applicable to the accessibility of interactive systems. It addresses a wide range of software (e.g. home, mobile, office, web, learning support and library systems). It promotes the increased usability of systems for a wider range of users in the widest range of contexts of use.
This document does not apply to the behaviour of, or requirements for, assistive technologies (including assistive software), but it does address the use of assistive technologies as an integrated component of interactive systems.
It is intended for use by those responsible for the specification, design, development, evaluation and procurement of software platforms and software applications.

The ISO 11929 series specifies a procedure, in the field of ionizing radiation metrology, for the calculation of the “decision threshold”, the “detection limit” and the “limits of the coverage interval” for a non-negative ionizing radiation measurand when counting measurements with preselection of time or counts are carried out. The measurand results from a gross count rate and a background count rate as well as from further quantities on the basis of a model of the evaluation. In particular, the measurand can be the net count rate as the difference of the gross count rate and the background count rate, or the net activity of a sample. It can also be influenced by calibration of the measuring system, by sample treatment and by other factors.
ISO 11929 has been divided into four parts covering elementary applications in ISO 11929-1, advanced applications on the basis of the ISO/IEC Guide 98-3:2008/Suppl 1:2008 in ISO 11929-2, applications to unfolding methods in this document, and guidance to the application in ISO 11929-4.
ISO 11929-1 covers basic applications of counting measurements frequently used in the field of ionizing radiation metrology. It is restricted to applications for which the uncertainties can be evaluated on the basis of the ISO/IEC Guide 98-3 (JCGM 2008). In ISO 11929-1:2025, Annex A, the special case of repeated counting measurements with random influences is covered, while measurements with linear analogous ratemeters, are covered in ISO 11929-1:2025, Annex B.
This document deals with the evaluation of measurements using unfolding methods and counting spectrometric multi-channel measurements if evaluated by unfolding methods, in particular, for alpha- and gamma‑spectrometric measurements. Further, it provides some advice on how to deal with correlations and covariances.
ISO 11929-4 gives guidance to the application of the ISO 11929 series, summarizes shortly the general procedure and then presents a wide range of numerical examples.
ISO 11929 Standard also applies analogously to other measurements of any kind especially if a similar model of the evaluation is involved. Further practical examples can be found, for example, in ISO 18589[7], ISO 9696[2], ISO 9697[3], ISO 9698[4], ISO 10703[5], ISO 7503[1], ISO 28218[8], and ISO 11665[6].
NOTE            A code system, named UncertRadio, is available for calculations according to ISO 11929- 1 to ISO 11929-3. UncertRadio[35][36] can be downloaded for free from https://www.thuenen.de/en/institutes/fisheries-ecology/fields-of-activity/marine-environment/coordination-centre-of-radioactivity/uncertradio.The download contains a setup installation file which copies all files and folders into a folder specified by the user. After installation one has to add information to the PATH of Windows as indicated by a pop‑up window during installation. English language can be chosen and extensive “help” information is available.

This document specifies the requirements for metallic shop fabricated cylindrical vertical steel tanks, single and double skin for the aboveground storage of water polluting liquids (both flammable and non-flammable) within the following limits:
—   from Ø 1250 mm up to Ø 4 000 mm inner tank nominal diameter, and
—   up to maximum overall shell length of 6 times the nominal inner tank diameter (or max 14 m shell lenght Lz), and
—   tank possible to be divided from 1 to 5 compartments,
—   for liquids with maximum density of up to 1,9 kg/l, and
—   with an operating pressure (P0) of maximum 50kPa (0,5 bar (g)) and minimum – 5 kPa (- 50 mbar (g)), and
—   where double skin tanks with vacuum leak detection system are used the kinematic viscosity of the stored media shall not exceed 5 × 10−3 m2/s.
This document is applicable for normal ambient temperature conditions (−40 °C to + 50 °C). Where temperatures are outside this range, additional requirements need to be taken into account.
This document is not applicable to tanks used for storage and/or supply of fuel/gas for building heating/cooling systems, and of hot or cold water not intended for human consumption, nor to loads and special measures necessary in areas subject to risk of earthquakes.
This document is not applicable for the storage of liquids having dangerous goods classes listed in Table 1 because of the special dangers involved.
Table 1 - List of dangerous goods which are not covered by this document
UN-classification   Type of dangerous goods
Class 1   Explosives
Class 4.2   Substances liable to spontaneous combustion
Class 4.3   Substances which in contact with water emit flammable gases
Class 5.2   Organic peroxides
Class 6.2   Infectious substances
Class 7   Radioactive substances, hydrocyanic or hydrocyanic solvent liquids, metal carbons, hydrofluoric acid, bromide liquids
NOTE   The classifications referred to are those adopted by the United Nations Committee of Experts on the Transport of Dangerous Goods (not to be interpreted as tank classes described in 6.2).

This document describes the scientific background and rationale for the content of EN 17950, Protective helmets - Test methods - Shock absorption including measuring rotational kinematics.

This document covers heavy rail rolling stock.
This document does not cover urban rail rolling stock.
NOTE 1   EN 17355 covers communication device requirements for urban rail rolling stock.
This document specifies:
-   the functional requirements for a call for aid system and communication device system;
-   the dynamic analysis of the call for aid system.
NOTE 2   "Dynamic analysis" is understood here as a sequence of actions.
NOTE 3   In a formation of vehicles where one complies with this document with one that does not, it is possible that the call for aid system is not fully functional.
NOTE 4   The call for aid system function is separate from the Passenger Alarm System (PAS) function, which is provided to deal with emergency situations. The PAS is described in EN 16334-1:2014+A1:2022.
NOTE 5   The communication device system can be different from the PAS, but it can share some or all parts of the PAS to achieve its functionalities.
NOTE 6   The PAS is regarded as a safety relevant system whereas the CFA system and communication device system are non-safety relevant aids to passengers.

This document 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 document also specifies accuracy classes of measuring systems and thresholds applicable to these classes. Demonstration of compliance is achieved through the selection, installation and operation of appropriate measurement instruments, together with suitable documented provisions for calculations. Examples of demonstration of compliance are provided for each accuracy class; however, they are not prescriptive solutions.
This document is applicable for gases of the 2nd family as classified in EN 437. It is also applicable for treated non-conventional combustible gases complying with EN 437 and for which a detailed technical evaluation of the functional requirements (such as injected biomethane) is performed ensuring there are no other constituents or properties of the gases that can affect the metrological and physical integrity of the measuring systems. This version mentions technical topics to consider when hydrogen and natural gas / hydrogen blends flow through the measuring systems. Blends with a hydrogen content between 20mol% and 98 mol% are not considered by this standard. This document applies to hydrogen with a purity as specified in CEN/TS 17977 for rededicated natural gas systems.
This document can also be used as a guideline for measuring systems for other gases e.g. gaseous CO2 for CCUS.
This document does not apply to for raw or sour gases.
This document does not apply to for gas measurement in CNG filling stations.
This document gives guidelines when designing, installing and operating gas meters with additional functionalities (smart gas meters).
Communication protocols and interfaces for gas meters and remote reading of gas meters are outside the scope of this document and are covered by the appropriate parts of the EN 13757 series. which provide a number of protocols for meter communications. Supervisory control and data acquisition protocols (SCADA) are also not covered by this document.
Unless otherwise specified all pressures used in this document are gauge pressures.
For associated pressure regulating systems the requirements of EN 12186 and/or EN 12279 apply.
For requirements on design, housing, lay-out, materials for components, construction, ventilation, venting and overall safety of gas measuring systems within the scope of this document, the EN 15001 series, EN 12186, EN 12279 and/or EN 1775 apply additionally, where relevant.

This document specifies a method for the determination of nitrate as NO3-N in water of various origin such as natural water (including groundwater, surface water and bathing water), drinking water and wastewater, in a measuring range of concentration between 0,10 mg/l and 225 mg/l of N03-N using the small-scale sealed tube method. Different measuring ranges of small-scale sealed tube methods can be required.
The measuring ranges can vary depending on the type of the small-scale sealed tube method of different manufacturers.
It is up to the user to choose the small-scale sealed tube test with the appropriate application range or to adapt samples with concentrations exceeding the measuring range of a test by preliminary dilution.
NOTE 1   The results of a sealed-tube test are most precise in the middle of the application range of the test.
Manufacturers' small-scale sealed tube methods are based on dimethylphenol colour reaction depending on the typical operating procedure of the small-scale sealed tube used, see Clause 9.
NOTE 2   Laws, regulations or standards can require that the data is expressed as NO3- after conversion with the stoichiometric conversion factor 4,426 81 in Clause 11.
NOTE 3   In the habitual language, use of sewage treatment and on the displays of automated sealed-tube test devices, NO3 without indication of the negative charge has become the common notation for the parameter nitrate and especially for the parameter nitrate-N. This notation is adopted in this document even though not being quite correct chemical nomenclature.

This document is applicable to the system engineering of bogies and running gear for rail vehicles, including those vehicles intended to operate under the Interoperability Directives.
It specifies the requirements to achieve:
-   a satisfactory design of bogie or running gear,
-   validation of the design within its operating envelope, and
-   a maintenance plan
to ensure that the relevant performance and safety criteria are maintained.
The scope of the system engineering process specified in this document includes the design, validation and maintenance of bogies and running gear. No requirements are specified for other systems components that are attached to the bogies or running gear, except to ensure that a satisfactory interface has been provided.
NOTE   Specifications that relate to bogies and running gear can only be considered in the context of a specific vehicle application. Therefore, the performance, including safety, can relate only to the bogies and running gear as part of a vehicle configuration and not to the individual elements of the bogies or running gear.

This document specifies requirements and test methods for durability, strength, security and function for top hung projecting hardware for windows and door height windows.
This document is applicable to top hung projecting reversible hardware whether fitted with integral restrictors or not. Where any restrictor is used it is intended to be tested in accordance with EN 13126-5.

1.1    This document specifies the safety requirements and measures for
—    cold presses,
—    hot presses,
—    bending presses,
—    edge/face gluing presses,
—    membrane presses, and
—    embossing presses,
where the pressing force is applied by hydraulic, pneumatic or electrical actuators pushing two flat or shaped surfaces against each other, capable of continuous production use, altogether referred to as “machines”.
This document deals with all significant hazards, hazardous situations and events as listed in Annex A, relevant to machines, when operated, adjusted and maintained as intended and under the conditions foreseen by the manufacturer, including reasonably foreseeable misuse. Also, transport, assembly, dismantling, disabling and scrapping phases are taken into account.
1.2    This document is applicable to machines fitted with one or more of the following devices or additional working units, whose hazards have been dealt with:
a)    a device for hot gluing;
b)    a device for high-frequency gluing in the frequency range from 1 MHz to 400 MHz;
c)    a device for high-frequency shaping in the frequency range from 1 MHz to 400 MHz;
d)    an automatic workpiece loading and unloading system;
e)    an intermediate additional platen;
f)    a workpiece extractor;
g)    a horizontal pressing system;
h)    split moveable platens.
1.3    The machines are designed to process workpieces consisting of:
a)    solid wood;
b)    materials with similar characteristics to wood (see ISO 19085-1:2021, 3.2), except those with light alloy laminates/edges/profiles for high-frequency presses;
c)    wood-based material such as chipboard, fibreboard and plywood composed/laminated with steel sheets/edges/profiles, except for high-frequency presses;
d)    honeycomb board;
e)    composite boards made from the materials listed above.
1.4    This document does not deal with any hazards related to:
—    specific devices that differ from the list above;
—    hot fluid heating systems internal to the machine other than electrical;
—    any hot fluid heating systems external to the machine;
—    operation of taking intermediate platens out and in again;
—    the combination of a single machine being used with any other machine (as part of a line).
1.5    This document is not applicable to:
—    frame presses;
—    membrane presses where the pressing force is applied by vacuum only;
—    presses for producing chipboard, fibreboard, OSB;
—    machines intended for use in potentially explosive atmosphere;
—    machines manufactured before the date of publication of this document.