Source for standards, engineering specifications, manuals and technical publications

This document establishes a framework for age assurance systems and describes their core characteristics, including privacy and security, for enabling age-related eligibility decisions.

This document specifies performance and general test methods for liquefied natural gas fuel system components intended for use on the types of motor vehicles defined in ISO 3833. This document is applicable to vehicles (mono-fuel, bi-fuel or dual-fuel applications) using liquefied gas according to the ISO 15403 series. It is applicable to original-production and converted vehicles. This document is only applicable on the components in the "liquefied natural gas (LNG) system" meaning an assembly of components (tanks, valves, flexible fuel lines, etc.) and connecting parts (fuel lines, fittings, etc.) fitted on motor vehicles using LNG in their propulsion system and related components up to and including the vaporizer. Other parts downstream from the vaporizer are considered as compressed natural gas (CNG) components covered by ISO 15501. NOTE All references to pressures, given in megapascals and bar (1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2) are considered gauge pressures, unless otherwise specified.

This document gives guidance relating to successful, secure and usable implementation of biometric enrolment processes, while indicating risk factors that organizations which use biometric technologies can address during procurement, design, deployment and operation. Much of this document is generic to many types of applications, e.g. from national scale commercial and government applications, to closed systems for in-house operations, and to consumer applications. However, the intended application and its purpose often have influence on the necessary enrolment data quality and are taken into account when specifying an enrolment system and process. This document specifies the differences in operation relating to specific types of application, e.g. where self-enrolment is more appropriate than attended enrolment. This document focuses on mandatory, attended enrolment at fixed locations. It ultimately consolidates information relating to better practices for the implementation of biometric enrolment capability in various business contexts including considerations of process, function (system), and technology, as well as legal/privacy and policy aspects. This document provides guidance on collection and storage of biometric enrolment data and the impact on dependent processes of verification and identification. This document does not include material specific to forensic and law enforcement applications.

This document specifies a procedure for the evaluation of centreline segregation of continuously cast slabs, including sampling, sample preparation and evaluation method. This document is applicable for low carbon steel slabs for pipe production manufactured by continuous casting. These steels have a typical chemical composition as follows (mass percentages): — C ≤ 0,12 % — Mn ≤ 2,0 % — Si ≤ 0,5 % — Ti + Nb + V ≤ 0,2 % The common dimensions of these slabs are in the following ranges: — Slab width: 800 mm to 2 600 mm — Slab thickness: 150 mm to 450 mm The evaluation methods covered by this document are based on macroscopic etching of slab samples followed by visual inspection by means of human eye or camera systems. The procedures for sampling described in 5.1 to 5.3 of this document are applicable to steels slabs in general (e. g. other steel grades or dimensions). However, the etching procedure (see 5.4) in combination with the evaluation methods described in Clause 6 have been developed especially for the application on pipeline steels as given above. Thus, they are not applicable to other steel grades, product types or dimensions without a prior validation. Any extension or modification beyond the scope of this document necessitates a separate agreement between producer and customer.

This document specifies evaluation methods for determining the content of reactive oxygen species (ROS) used in the FB-facilitated advanced oxidation for pollution abatement in the wastewater treatment process. The probe based kinetic model is applicable to systems that generate ROS in substantial quantities, rather than at physiological concentrations, and is applicable to short-lived ROS. However, it is not applicable to long-lived ROS, such as ozone (O3) and hydrogen peroxide (H2O2). The probe based kinetic model method specifies: — cumulative concentration of different types of ROS during the reaction process; — concentration of different types of ROS at each time point during the reaction process. This method does not define the mechanisms of ROS generation, nor the correlation between bubble size and ROS production.

This document specifies the minimum safety requirements applicable to liquefied natural gas (LNG) on-board fuel system intended for use on the types of motor vehicles defined in ISO 3833. This document is applicable to vehicles (mono-fuel, bi-fuel or dual-fuel applications) using LNG according to the ISO 15403 series. It is applicable to original-production and converted vehicles. All matters relating to the skills of installers and converters have been excluded from this document. This document is only applicable to the components in the LNG system which is an assembly of components (tanks, valves, flexible fuel lines, etc., see Annex B) and connecting parts (fuel lines, fittings, etc.) fitted on motor vehicles using LNG in their propulsion system and related components up to and including the vaporizer. Other parts downstream from the vaporizer are considered as compressed natural gas (CNG) components covered by the ISO 15501 series.

This document showcases existing practices to monitor supply chains as implemented in the healthcare supply chains, by making use of medicines verification or authentication systems, or both, traceability tools, safe communication technology solutions, and more. This document also discusses the potential benefits of expanding the identification of medicinal products (IDMP) to provide global identifiers for medicinal products, ingredients and batches. It also addresses potential pathways to a global registration system.

This document specifies the enumeration of Pseudomonas spp. by the colony-count technique. This document is applicable to: — milk and milk products; — environmental samples in the area of dairy production and handling. The method allows the isolation of all pigmented and non-pigmented psychrotrophic Pseudomonas spp.

This document specifies certain characteristics of the essential oil of carrot seed (Daucus carota L.), produced in France and India, with a view to facilitating the assessment of its quality.

This document specifies the standard test method to assess the performance of dust collectors utilizing integrated fans (compact type dust collector), at the time of manufacture, after being used for a certain period. This document adopts the black box concept that the dust collector to be tested is operated with the specification determined by the manufacturer except test dust condition and the pulse interval during ageing. This document is applicable to small dust collectors utilizing cartridge filters including molded filters or bag filters with pulse cleaning equipment as filtration media for dry dust collection. Mist and fumes collectors are excluded from this test. The performance obtained from this test does not guarantee the performance of the system. This document is not intended to offer the superiority or inferiority of performance between dust collectors, but specifies a standard test method that provides users with performance under simulated conditions of use for a certain duration.

This document provides guidance to relevant product standards, for compatibility assessment and qualification of materials for equipment used in commercial, industrial installations including gas burners, gas burning appliances and fuel gas infrastructures  that are:
—   fed by admixture of natural gas and hydrogen (blending) or pure hydrogen;
—   operated at pressure greater than 10 bar (1 MPa) and up to 100 bar (10 MPa);
—operated within a temperature range of −20° C to +60 °C;
NOTE 1   Temperature range outside of −20° to +60°C can be considered after risk assessment by the manufacturer, in compliance with relevant product standard and the requirements specified in this document.
Except for critical equipment, where hydrogen requirements and material compatibility are defined by relevant specific, national and international product standard, according to CEN/TR 17924 and CEN/TR 17797, no specific requirements are necessary, as detailed in this document (see also Figure 1), under the following conditions:
—   for a homogeneous mixture of natural gas and hydrogen with a hydrogen content not exceeding 10 % by volume, at operating pressures up to 100 bar (10 MPa); or
—   for operating pressures up to 10 bar (1 MPa) with a hydrogen content up to 100 % by volume.
—   Equipment is classified as critical when it’s subjected to fatigue or specific mechanical stress due to specific operating conditions and applications (i.e. compression and pumping station, specific industrial installations, fuel tanks for vehicles, …).
This document represents minimum requirements and does not restrict the use of better procedures or materials.
The following items are detailed in this document:
—   metallic materials;
—   non-metallic materials;
—   validation tests.

This Technical Report provides information on the migration behaviour of certain elements from polymers in order to assist e. g. manufacturers of toys in performing risk assessments.

This document specifies a method using gas chromatography with mass selective detector (GC-MS) for detection and quantification of extractable N,N-dimethylformamide (DMF), N,N-dimethylacetamide (DMAC), N-methyl-2-pyrrolidone (NMP) and N-ethyl-2-pyrrolidone (NEP) in filaments and coatings of textile products.

The test methods described are designed to determine the disinfectant activity of processes used in the 1) medical area, 2) veterinary area, 3) food, industrial, domestic and institutional area using automated processes for distributing chemicals by air diffusion with no operator manually applying the disinfectant. This document covers the disinfection of nonporous surfaces but not that of the air.
The objective of the described processes is to disinfect the surfaces of the overall area including the external surfaces of the equipment contained in such rooms. Air handling and products or processes specifically designed for the disinfection of medical devices are excluded from the scope of this document. The test methods and volumes described provide a defined challenge.
This document is applicable to processes for which activity is claimed against the following groups of microorganisms:
—   vegetative bacteria,
—    mycobacteria,
—   bacterial spores,
—   yeasts,
—   fungal spores,
—   viruses,
—   bacteriophages.
This document does not cover processes for which the mode of action is based on immersing and/or circulation, flooding, spraying, wiping or other processes where the product is directly applied to the surfaces and not via air dispersion.

This document specifies the laboratory test methods and test requirements for the testing of aerodynamic, thermal, acoustic and electrical performance characteristics of ducted mechanical supply and exhaust residential ventilation units.
NOTE   Such units are referred to as bidirectional ventilation units in EN 13142:2021.
This document is applicable to unit that contain at least, within one or more casing:
—   fans for mechanical supply and exhaust;
—   air filters;
—   air-to-air heat exchanger and/or air-to-air heat pump for air heat recovery;
—   control system.
Such unit can be provided in more than one assembly, the separate assemblies of which are designed to be used together.
Examples of different possible arrangements of heat recovery, heat exchangers and/or heat pumps are described in Annex A.
This document covers ventilation units with continuous mass flows for each setting point.
This document does not deal with non-ducted units that are treated in prEN 13141 8:2021.
This document does not cover ventilation systems that may also provide water space heating and hot water that are treated in EN 16573.
This document does not cover units including combustion engine driven compression heat pumps and absorption heat pumps.
Electrical safety requirements are given in EN 60335 2 40 and EN 60335 2 80.

This document specifies the cutting and preparation of test specimens and the conditions for performing the macroscopic examination of the test specimens.
The test is applicable to welded assemblies made from thermoplastics materials filled or unfilled, using the following processes:
—   hot gas welding: round nozzle, high speed nozzle, wedge;
—   extrusion welding;
—   heated tool welding: butt, saddle, socket, wedge;
—   electrofusion welding: socket, saddle.

IEC TS 62257-350:2025 specifies the criteria for selecting and sizing inverters suitable for different off-grid applications integrating solar as an energy source. As well as off-grid systems, this document can also apply to inverters where a utility grid connection is available as a backup for charging batteries, but it is not intended to cover applications in which inverters synchronize and inject energy back into a utility grid, even though this capability can incidentally be a part of the functionality of the inverters. Single and multi-phase applications are included.

IEC TS 62607-6-26:2025, which is a Technical Specification, establishes a standardized method to determine the mechanical key control characteristics (KCCs)
• Young's modulus (or elastic modulus),
• residual strain,
• residual stress, and
• fracture stress
of 2D materials and nanoscale films using the
• bulge test.
The bulge test is a reliable method where a pressure differential is applied to a freestanding film, and the resulting deformation is measured to derive the mechanical properties.
• This method is applicable to a wide range of freestanding 2D materials, such as graphene, and nanometre-thick films with thicknesses typically ranging from 1 nm to several hundred nanometres.
• This document ensures the characterization of mechanical properties essential for assessing the structural integrity and performance of materials in applications such as composite additives, flexible electronics, and energy harvesting devices.

The present document specifies interception of Internet Protocol (IP) Multimedia (MM) Services based on the Session Initiation Protocol (SIP) and Realtime Transport Protocol (RTP) and Message Session Relay Protocol (MSRP) and IP MM services as described by the Recommendations ITU-T H.323 [6] and H.248-1 [i.3]. The present document is consistent with the definition of the Handover Interface, as described in ETSI TS 102 232-1 [2]. The present document does not override or supersede any specifications or requirements in 3GPP TS 33.108 [9] and ETSI TS 101 671 [1].

IEC 61874:2025 applies to equipment consisting of:
- a borehole logging probe equipped with a collimated radioisotope (gamma) source (during the actual measurements only) and a detector unit to measure scattered gamma radiation;
- a hoisting system and depth measuring system;
- other instruments and devices (power supply, pulse converter/amplifier, ratemeter, recorder, signal processing and readout units).
This document defines the terminology, specifies the types of apparatus, design and general technical requirements, specific radiation performance, electrical, mechanical, safe and environmental performance requirements. It also defines test and calibration procedures and covers electrical safety and radiation protection issues. Further, it gives recommendations about items included in the manufacturer's operation and maintenance documentation (or certificate).
The purpose of this document is to specify design requirements and performance characteristics of nuclear instrumentation used in boreholes to determine bulk rock density in situ. With suitable response charts the measurements can be equated to rock lithology and porosity.