List of drafts

prEN ISO 12135 Public enquiry

Comment end date 2026-06-07

Metallic materials - Unified method of test for the determination of quasistatic fracture toughness (ISO 12135:2021, including corrected version 2022-08)

This document specifies methods for determining fracture toughness in terms of K, δ, J and R-curves for homogeneous metallic materials subjected to quasistatic loading. Specimens are notched, precracked by fatigue and tested under slowly increasing displacement. The fracture toughness is determined for individual specimens at or after the onset of ductile crack extension or at the onset of ductile crack instability or unstable crack extension. In cases where cracks grow in a stable manner under ductile tearing conditions, a resistance curve describing fracture toughness as a function of crack extension is measured. In some cases in the testing of ferritic materials, unstable crack extension can occur by cleavage or ductile crack initiation and growth, interrupted by cleavage extension. The fracture toughness at crack arrest is not covered by this document. Special testing requirements and analysis procedures are necessary when testing weldments, and these are described in ISO 15653 which is complementary to this document. Statistical variability of the results strongly depends on the fracture type, for instance, fracture toughness associated with cleavage fracture in ferritic steels can show large variation. For applications that require high reliability, a statistical approach can be used to quantify the variability in fracture toughness in the ductile-to-brittle transition region, such as that given in ASTM E1921. However, it is not the purpose of this document to specify the number of tests to be carried out nor how the results of the tests are to be applied or interpreted.

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prEN ISO 6338-2 Public enquiry

Comment end date 2026-06-07

Calculations of greenhouse gas (GHG) emissions throughout the liquefied natural gas (LNG) chain - Part 2: Natural gas production and transport to LNG plant (ISO 6338-2:2024)

This document provides a method to calculate the greenhouse gas (GHG) emissions during natural gas production (onshore or offshore), gas processing and gas transport to liquefied natural gas (LNG) liquefaction plant. NOTE It can be applied to other gases as biogas or non-traditional types of natural gas. This document covers all facilities associated with producing natural gas, including: — drilling (exploration, appraisal, and development) and production wells; — gas gathering network and boosting stations (if any); — gas processing facilities (if any), transport gas pipelines with compression stations (if any) up to inlet valve of LNG liquefaction plant. This document covers facilities associated with producing other products (such as, but not limited to, domestic gas, condensate, Liquefied Petroleum Gas (LPG), sulphur, power export) to the extent required to allocate GHG emissions to each product. This document covers the upstream facilities “under operation”, including emissions associated with commissioning, initial start-up and restarts after maintenance or upset. This document does not cover the exploration, construction and decommissioning phases or the losses from vegetation coverage. This document covers all GHG emissions associated with production, process and transport of natural gas to the LNG liquefaction plant. These emissions spread across scope 1, scope 2 and scope 3 of the responsible organization, as defined in ISO 6338-1. All emissions sources are covered including flaring, combustion, cold vents, process vents, fugitive leaks and emissions associated with imported energy. Gases covered include CO2, CH4, N2O and fluorinated gases. This document does not cover compensation. This document defines preferred units of measurement and necessary conversions. This document also recommends instrumentation and estimations methods to monitor and report GHG emissions. Some emissions are measured; and some are estimated.

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prEN ISO 6338 Public enquiry

Comment end date 2026-06-08

Method to calculate GHG emissions at LNG plant (ISO 6338:2023)

This document provides a method to calculate the GHG emissions from an LNG liquefaction plant, onshore or offshore. The frame of this document ranges from the inlet flange of the LNG plant’s inlet facilities up to and including the offloading arms to truck, ship or railcar loading. The upstream supply of gas up to the inlet flange of the inlet facilities and the distribution of LNG downstream of the loading arms are only covered in general terms. This document covers: — all facilities associated with producing LNG, including reception facilities, condensate unit (where applicable), pre-treatment units (including but not limited to acid gas removal, dehydration, mercury removal, heavies removal), LPG extraction and fractionation (where applicable), liquefaction, LNG storage and loading, Boil-Off-Gas handling, flare and disposal systems, imported electricity or on-site power generation and other plant utilities and infrastructure (e.g. marine and transportation facilities). — natural gas liquefaction facilities associated with producing other products (e.g. domestic gas, condensate, LPG, sulphur, power export) to the extent required to allocate GHG emissions to the different products. — all GHG emissions associated with producing LNG. These emissions spread across scope 1, scope 2 and scope 3 of the responsible organization. Scope 1, 2 and 3 are defined in this document. All emissions sources are covered including flaring, combustion, cold vents, process vents, fugitive leaks and emissions associated with imported energy. The LNG plant is considered “under operation”, including emissions associated with initial start-up, maintenance, turnaround and restarts after maintenance or upset. The construction, commissioning, extension and decommissioning phases are excluded from this document but can be assessed separately. The emissions resulting from boil-off gas management during loading of the ship or any export vehicle are covered by this document. The emissions from a ship at berth, e.g. mast venting are not covered by this document. This document describes the allocation of GHG emissions to LNG and other hydrocarbon products where other products are produced (e.g. LPG, domestic gas, condensates, sulphur, etc.). This document defines preferred units of measurement and necessary conversions. This document also recommends instrumentation and estimations methods to monitor and report GHG emissions. Some emissions are measured and some are estimated. This document is applicable to the LNG industry. Applications include the provision of method to calculate GHG emissions through a standardized and auditable method, a means to determine their carbon footprint.

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prEN 14453 Public enquiry

Comment end date 2026-06-07

Devices to prevent pollution by backflow of potable water - Pipe interrupter with permanent atmospheric vent DN 10 to DN 20 - Family D, type C

This document specifies the field of application, the dimensional, the physico-chemical properties and the properties of general hydraulic, mechanical and acoustic design of pipe interrupters with permanent atmospheric vent family D Type C, intended to prevent pollution of potable water by backflow, caused by backsiphoning only. It is applicable to pipe interrupters with permanent atmospheric vent in denominations DN 10 up to DN 20. It covers pipe interrupters with permanent atmospheric vent of PN 10 that are capable of working without modification or adjustment: - at any pressure, up to 1 MPa (10 bar); - with any pressure variation, up to 1 MPa (10 bar); - in permanent duty at a limited temperature of 65 °C and for maximum 1 h at 90 °C. It specifies also the test methods and requirements for verifying their characteristics, the marking and the presentation at delivery. Backflow protection devices integrated in flushing valves are similar to DC and are not covered under this document. The requirements are stated in EN 12541.

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prEN 12258-1 Public enquiry

Comment end date 2026-06-07

Aluminium and aluminium alloys - Terms and definitions - Part 1: General terms

This European Standard defines general terms relating to products of aluminium and aluminium alloys which are helpful for communication within the aluminium industry and with its customers . It includes terms dealing with aluminium products, processing, sampling and testing, product characteristics and different types of visual quality characteristics. It does not include terms dealing with bauxite mining, alumina and anode production and aluminium smelting. This European Standard tries to adhere as closely as possible to the terms and definitions used in other standards or documents. NOTE For materials other than aluminium, different definitions can apply to terms which are defined in this document. This European Standard tries to follow the "common language" as it is used in native English speaking countries, without giving preference to specific idioms of any one of these counties. In cases where in different English-speaking countries different terms are used for the same concept or different concepts refer to an identical term, the appropriate explanations are given.

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prEN 50388-1:2026 Public enquiry

Comment end date 2026-06-05

Fixed installations and rolling stock for railway applications - Technical criteria for the coordination between electric traction power supply systems and rolling stock to achieve interoperability - Part 1: General

This document establishes requirements for the electrical aspects to achieve technical compatibility between rolling stock and electric traction systems, limited to: - co-ordination of protection principles between power supply and traction units, i.e. separation sections, train set current or power limitation, short circuit current discrimination, circuit breaker coordination and use of regenerative braking; - co-ordination of installed power on the line and the power demand of trains, i.e. traction unit power factor, train set current or power limitation, electric system performance, type and characterization; - compatibility assessment relating to harmonics and dynamic effects. Informative values are given for some parts of the existing European railway networks, in annexes. NOTE For those railways within the scope of EU Interoperability Directive, definitive values are set out in the register of infrastructure published in accordance with Article 49 of Directive (EU) 2016/797, and the list of items included in the register is described in the commission decision (EU) 2019/777. The following electric traction systems are within the scope of this document: - railways; - guided mass transport systems that are integrated with railways; - material transport systems that are integrated with railways. Information is given on electrification parameters to enable train operating companies to confirm, after consultation with the rolling stock manufacturers, that risks of non-compatibility are minimized and that there will be no consequential disturbance on the electrification system. The interaction between pantograph and overhead contact line is dealt with in EN 50367:2020. The interaction with the control-command and signalling subsystem is not dealt with in this document. Basic considerations have been included concerning the use of traction units with onboard electric traction energy storage in the electric traction power system. Details of this are dealt with in CLC/TS 50729:2025.

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EN 50716:2023/prA1:2026 Public enquiry

Comment end date 2026-06-05

Railway Applications - Requirements for software development

The amendment will address misunderstandings on provisions for AI/ML by providing additional guidance and clarifications without changing the fundamental technical requirements and recommendations of the standard. The amendment and its limitation to broadly editorial changes is based on following considerations: • Limited Standardization for AI: While AI/ML holds promise for various applications, current standardization efforts specific to AI/ML in safety-critical domains like railway are still in their early stages. This lack of mature and widely accepted standards for verifying and validating AI/ML systems in these contexts makes it challenging to reference or directly incorporate such technologies into the scope of EN 50716 (with less restrictive provisions) at this time. • Promoting Flexibility and Innovation: By clarifying the existing provisions and adding guidance without imposing new requirements, the amendment allows for flexibility and encourages developers to explore the potential of AI/ML (where is safe to do so). The following areas have already been identified by WG28 for the amendment: • Explicitly remind the scope of Table A.3: State that the table's techniques and measures are primarily intended for the design of the software architecture for safety-related functions (e.g. does not strictly apply to support tools). • Provide guidance on AI/ML usage: Explicitly acknowledge the potential of AI/ML in non-safety-critical areas and offer examples of possible applications (complementary to current recommendation for Basic Integrity, “-”, in Table A.3 for 13. Artificial Intelligence and Machine Learning). • Guidance on Support Tools: Ensure a consistent understanding of the AI/ML provisions related to support tools (& programming languages). This represent current view on potential changes - other areas may be identified during the amendment drafting, keeping into account the above mentioned limitations to broadly editorial changes.

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prEN ISO 1042 Public enquiry

Comment end date 2026-06-04

Laboratory glassware - One-mark volumetric flasks (ISO/DIS 1042:2026)

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EN 12245:2022/prA1 Public enquiry

Comment end date 2026-06-04

Transportable gas cylinders - Fully wrapped composite cylinders

This document specifies minimum requirements for the materials, design, construction, prototype testing and routine manufacturing inspections of fully wrapped composite gas cylinders for compressed, liquefied and dissolved gases. NOTE 1 For the purposes of this document, the word “cylinder” includes tubes (seamless transportable pressure receptacles of a water capacity exceeding 150 l and of not more than 3 000 l). This document is applicable to cylinders that comprise a liner of metallic material (welded or seamless) or non-metallic material (or a mixture thereof), reinforced by a wound composite consisting of fibres of glass, carbon or aramid (or a mixture thereof) embedded in a matrix. This document is also applicable to composite cylinders without liners. This document is not applicable to gas cylinders which are partially covered with fibres and commonly called “hoop wrapped” cylinders. For hoop wrapped composite cylinders, see EN 12257. NOTE 2 This document does not address the design, fitting and performance of removable protective sleeves. Where these are fitted, they are considered separately. This document is primarily for compressed, liquefied and dissolved gases other than LPG. NOTE 3 For dedicated LPG cylinders, see EN 14427.

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prEN 16263 Public enquiry

Comment end date 2026-06-04

Pyrotechnic articles - Other pyrotechnic articles

This document specifies requirements for the construction, performances, minimum labelling and mandatory instructions for use of other pyrotechnic articles of the following generic types: - flares; - flash devices; - gas generators; - heaters; - other cartridges; - pyromechanical devices; - pyrotechnic actuated dispersers; - rockets and rocket motors; - semi-finished pyrotechnic articles; - smoke/aerosol generators; - sound emitters. This document does not apply to pyrotechnic articles for vehicles, ignition devices and cartridges for powder actuated tools (PAT). The following standards apply to the excluded articles: - EN ISO 14451 1, Pyrotechnic articles - Pyrotechnic articles for vehicles - Part 1: Terminology (Under preparation) - EN ISO 14451 2, Pyrotechnic articles - Pyrotechnic articles for vehicles - Part 2: Test methods (Under preparation) - EN ISO 14451 3, Pyrotechnic articles - Pyrotechnic articles for vehicles - Part 3: Labelling (Under preparation) - EN ISO 14451 4, Pyrotechnic articles - Pyrotechnic articles for vehicles - Part 4: Requirements and categorization for micro gas generators (Under preparation) - EN ISO 14451 5, Pyrotechnic articles for vehicles – Part 5: Requirements and categorization for airbag gas generators (Under preparation) - EN ISO 14451 6, Pyrotechnic articles – Pyrotechnic articles for vehicles – Part 6: Requirements and categorization for airbag modules (Under preparation) - EN ISO 14451 7, Pyrotechnic articles – Pyrotechnic articles for vehicles – Part 7: Requirements and categorization for seatbelt pretensioners (Under preparation) - EN ISO 14451 8, Pyrotechnic articles – Pyrotechnic articles for vehicles – Part 8: Requirements and categorization for igniters (Under preparation) - EN ISO 14451 9, Pyrotechnic articles – Pyrotechnic articles for vehicles – Part 9: Requirements and categorization for actuators (Under preparation) - EN ISO 14451 10, Pyrotechnic articles – Pyrotechnic articles for vehicles – Part 10: Requirements and categorization for semi-finished products (preparation) - EN 16264, Pyrotechnic articles – Other pyrotechnic articles – Cartridges for powder actuated tools (Under preparation) - EN 16265, Pyrotechnic articles – Other pyrotechnic articles – Ignition devices (Under preparation)

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prEN ISO 787-18 Public enquiry

Comment end date 2026-06-04

General methods of test for pigments and extenders - Part 18: Determination of residue on sieve - Mechanical flushing procedure (ISO/DIS 787-18:2026)

The method specified can also be applied to the examination of other powders or granules which are insoluble in water. It is neither applicable to hydrophobic nor pelletized materials. In the test apparatus the material under test, dispersed in water, is brought into centrifugal motion by a system of rotating jets of water. he water flushes the fine particles through the sieve, the coarse particles being retained on the sieve. The residue on the sieve is dried and weighed. - Cancels and replaces ISO 787/18-1973 and constitutes its technical revision.

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prEN IEC 62885-11:2026 Public enquiry

Comment end date 2026-06-03

Surface cleaning appliances - Part 11: Wet-cleaning robots for household or similar use - Methods for measuring the performance

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EN 60734:2012/prA1:2026 Public enquiry

Comment end date 2026-06-03

Amendment 1 - Household electrical appliances - Performance - Water for testing

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prEN IEC 61400-16:2026 Public enquiry

Comment end date 2026-06-03

Wind energy generation systems - Part 16: Standard format for sharing power curves and associated information

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prEN IEC 62310-1:2026 Public enquiry

Comment end date 2026-06-03

Static transfer systems (STS) - Part 1: General and safety requirements

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prEN 10380 Public enquiry

Comment end date 2026-06-02

Finished non-alloy and alloy steel products for structural use

The standard shall cover finished products made of carbon steel, steel alloy and cast steel intended to be used as structural elements in construction works, including its use in installations. Products may be coated, or uncoated. Products may be weldable, or non-weldable. Products made of stainless steel are excluded from this product definition. The standard shall cover: Product group on sections and profiles, product group on plates, sheets, strip and wide flats, product group on bars, rods and wire, product group on hollows and product group on piles and sheet piles.

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prEN 6117 Public enquiry

Comment end date 2026-06-02

Aerospace series - Specification for lubrication of fasteners with cetyl alcohol

This specification defines the process applicable to the lubrication with cetyl alcohol of aerospace fasteners such as threaded bolts, blind fasteners, nuts, lockbolts, pins and collars. It defines the product application methods and the relevant quality assurance requirements for the lubrication of the commonly used fastener materials: aluminium alloys, alloy steels, stainless steels, titanium alloys and nickel base alloys.

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prEN 18336 Public enquiry

Comment end date 2026-06-02

Leather - Raw bovine hides and skins - grading

This document specifies requirements to grade hides and skins according to the defects listed in EN 16055. It applies to raw bovine hides and skins, both fresh and salted, intended for use throughout the leather manufacturing supply chain.

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prEN 15132 Public enquiry

Comment end date 2026-06-02

Container shells for mobile waste containers with a capacity up to 1 700 l - Performance requirements and test methods

This document specifies the requirements for container shells for mobile waste containers with a capacity up to 1 700 l covered by EN 840-1 to EN 840-4. Only for container shells with volume optimization – CS-VO, the subcontainer is an applicable model. This document specifies the general performance characteristics of such shells as well as the test methods, and gives recommendations for installation.

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prEN 17307 Public enquiry

Comment end date 2026-06-02

Material derived from End-of-Life tyres - Granulates and powders - Elastomers identification: Gas-chromatography and mass-spectrometric detection of pyrolysis products in solution

This document specifies a method for the identification of the type of elastomers in granulates or powder derived from End-of-Life Tyres (ELT). The method specified is a qualitative method only.

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ISO/IEC DIS 4922-3 Public enquiry

Comment end date 2026-06-03

Information security — Secure multiparty computation — Part 3: Mechanisms based on garbled circuits

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prEN 17450-4 Public enquiry

Comment end date 2026-06-02

Fixed firefighting systems - Components for water mist systems - Part 4: Requirements and test methods for deluge valves

This document specifies requirements and describes test methods for deluge valves and their actuators used in water mist systems. Valves tested according to EN 12259-9 are considered to meet the requirements of this document and its technical documentation.

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EN 12299:2024/prA1 Public enquiry

Comment end date 2026-06-02

Railway applications - Ride comfort for passengers - Measurement and evaluation

The purpose of this document is to provide methods for quantifying the ride comfort of a passenger in a rail vehicle in response to the track sections it is operated over. The methods aim to quantify the effects of vehicle body motions on ride comfort and to make the assessment of passenger comfort predictable, repeatable, objective and meaningful. The methods and comfort scales are validated for people of good health. This document applies to passengers in rail vehicles operating on heavy rail networks. This document applies to measurements of motions. It also applies to simulated motions. Guidance is provided on: - which method described within the document should be used for different scenarios; - typical values for different comfort levels; - the application of simulation. This document excludes health and safety issues, non-passenger carrying vehicles, vehicle homologation and safety, limit values, motion sickness, discomfort caused by accelerating and braking, design guidelines and measurement technology.

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prEN ISO 29022 Public enquiry

Comment end date 2026-06-02

Dentistry - Adhesion - Notched-edge shear bond strength test (ISO/DIS 29022:2026)

ISO 29022:2013 specifies a shear test method used to determine the adhesive bond strength between direct dental restorative materials and tooth structure, e.g. dentine or enamel. The method as described is principally intended for dental adhesives. The method includes substrate selection, storage and handling of tooth structure, as well as the procedure for testing.

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prEN ISO 19472-1 Public enquiry

Comment end date 2026-06-02

Machinery for forestry - Winches - Part 1: Dimensions, performance and safety (ISO/DIS 19472-1:2026)

This document stipulates measures as well as requirements in respect to performance and safety for winches that are used in agriculture and forestry for logging and skidding work. It applies to permanently mounted and removable winches and their components, which are mounted on mobile and self-propelled forestry machines as defined in ISO 6814:2009, as well as to winches for forestry mounted on agricultural tractors that are used for forestry work. The document also applies to capstan winches and winches using driving sheaves or driving pulleys for forestry. It does not apply to winches: — that are used for hoisting or lifting operations; — that are used in draglines; — that are used in in yarders, unless winches according to 5.17; — designed for traction aid purposes; — using operating and control voltages > 42 V; — that are used with log splitters according to EN 609-1. It applies exclusively to winches that are used for dragging loads on horizontal and inclined ground during logging operations or which are used to support tree felling work. The significant hazards included in this document are identified in Annex A. This document is not applicable to winches manufactured before the date of its publication.

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