List of drafts

prEN 50600-2-2:2026 Public enquiry

Comment end date 2026-03-27

Information technology - Data centre facilities and infrastructures - Part 2-2: Power supply and distribution

This document addresses power supplies to, and power distribution within, data centres based upon the criteria and classifications for “availability”, “physical security” and “resource and energy efficiency enablement” within EN 50600 1. This document specifies requirements and recommendations for the following: a) power supplies to data centres; b) power distribution systems to all equipment within data centres; c) telecommunications infrastructure bonding; d) lightning protection; e) devices for the measurement of the energy consumption and power quality characteristics at points along the power distribution system and their integration within management tools. Safety and electromagnetic compatibility (EMC) requirements are outside the scope of this document and are covered by other standards and regulations. However, information given in this document can be of assistance in meeting these standards and regulations.

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prEN IEC 63267-3-1:2026 Public enquiry

Comment end date 2026-03-25

Fibre optic interconnecting devices and passive components - Connector optical interfaces for enhanced macrobend multimode fibres - Part 3-1: Connector parameters of physically contacting 50 µm core diameter fibres - Non-angled 2,5 mm and 1,25 mm diameter cylindrical full zirconia ferrules

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prEN IEC 60343:2025 Public enquiry

Comment end date 2026-02-18

Recommended test methods for determining the relative resistance of insulating materials to breakdown by surface discharges - Part 1: General methods

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prEN IEC 62477-2:2025 Public enquiry

Comment end date 2026-02-25

Safety requirements for power electronic converter systems and equipment - Part 2: High voltage power electronic converters up to 36 kv a.c. or 54 kv d.c.

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prEN IEC 62037-7:2026 Public enquiry

Comment end date 2026-03-25

Passive RF and microwave devices, intermodulation level measurement - Part 7: Field measurements of passive intermodulation

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prEN ISO 19277-1 Public enquiry

Comment end date 2026-04-07

Oil and gas industries including lower carbon energy - Qualification testing and acceptance criteria for protective coating systems under insulation - Part 1: Liquid applied coatings (ISO/DIS 19277-1:2026)

This document describes various corrosion under insulation (CUI) environments in refineries and other related industries and environments, and establishes CUI environmental categories including operating temperature ranges from −45 °C to 204 °C for topside and aboveground service only. This document specifies both established and other test methods for the assessment of coatings used for prevention of CUI for each given environment. This document also provides acceptance criteria for each CUI environment. NOTE The test results and acceptance criteria can be considered an aid in the selection of suitable coating systems. For service or peak temperatures below −45 °C an optional cryogenic test can be incorporated and for over 204 °C testing acceptance criteria can be agreed between interested parties. Additional or other test and acceptance measures are possible, but require particular agreement between the interested parties. This document covers spray-applied coatings applied on new carbon and austenitic stainless steel for use in CUI service. This document does not cover testing of sacrificial coatings, such as inorganic zinc, as these coatings can be consumed quickly in wet environments. Developing accelerated corrosion testing for what can be continuous wet service with sacrificial coatings is beyond the scope of this document. "Non-through porosity" thermal spray aluminium coatings with greater than 250 µm dry film thickness can be tested and qualified in accordance with this document. This document does not cover tape and sheet applied products for use in preventing CUI. This document does not deal with other aspects of coating degradation, such as those caused by abrasion, erosion, ultraviolet degradation or other methods that can exist given specific environment and construction methods.

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prEN 50583-1:2026 Public enquiry

Comment end date 2026-04-10

Photovoltaics in buildings - Part 1: BIPV modules

This document applies to photovoltaic modules that contain at least one glass pane and which are used as construction products. It focuses on the properties of these photovoltaic modules relevant to essential building requirements as specified in the European Construction Product Regulation CPR 305/2011, and the applicable electro-technical requirements as stated in the Low Voltage Directive 2014/35/EU / or CENELEC standards. The CE mark of building integrated photovoltaic (BIPV) modules will thus state properties based on both documents as they are both equally applicable. This document references international standards, technical reports and guidelines. For some mounting categories, in addition, national standards (or regulations) for building products may apply in individual countries, which are not explicitly referenced here and for which harmonized European Standards are not yet available. The document is addressed to manufacturers, planners, system designers, installers, testing institutes and building authorities. This document does not address concentrating or building-attached photovoltaic modules (BAPV). This document addresses requirements on the PV modules in the specific ways they are intended to be mounted. Separable mounting structures are within the scope of EN 50583 2. NOTE For the definition of building-attached photovoltaic modules (BAPV) refer to Clause 3.

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prEN IEC 60695-1-12:2025 Public enquiry

Comment end date 2026-02-18

Fire hazard testing - Part 1-12: Guidance for assessing the fire hazard of electrotechnical products - Fire safety engineering

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prEN ISO 23739 Public enquiry

Comment end date 2026-03-19

Fine ceramics (advanced ceramics, advanced technical ceramics) - Methods for chemical analysis of zirconium oxide powders (ISO/DIS 23739:2026)

This document specifies methods for the chemical analysis of zirconium oxide powders used as the raw material for fine ceramics. It stipulates the determination methods of the zirconium, aluminium, barium, calcium, cerium, cobalt, gadolinium, hafnium, iron, magnesium, potassium, silicon, sodium, strontium, titanium and yttrium contents in zirconium oxide powders for fine ceramics. The test sample is decomposed by acid pressure decomposition or alkali fusion. Contents of zirconium and yttrium are determined by using either a precipitation and gravimetric method or an inductively coupled plasma–optical emission spectrometry (ICP–OES) method. Contents of aluminium, barium, calcium, cerium, cobalt, gadolinium, hafnium, iron, magnesium, potassium, silicon, sodium, strontium and titanium are determined by using an ICP–OES method.

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prEN 868-9 Public enquiry

Comment end date 2026-03-24

Packaging for terminally sterilized medical devices - Part 9: Uncoated nonwoven materials of polyolefines - Requirements and test methods

This document specifies test methods and values for uncoated nonwoven materials of polyolefins used for single-use sterile barrier systems and/or packaging systems for terminally sterilized medical devices. Other than the general requirements as specified in EN ISO 11607-1 and EN ISO 11607-2, this part of EN 868 series specifies materials, test methods and values that are specific to the products covered by this document.

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prEN ISO 19870-2 Public enquiry

Comment end date 2026-03-24

Hydrogen technologies - Methodology for determining the greenhouse gas emissions associated with the hydrogen supply chain - Part 2: Emissions associated with the conditioning and transport of gaseous and liquid hydrogen up to consumption gate (ISO/DIS 19870-2:2026)

The scope of this proposal is to establish a methodology and analytical framework to determine the GHG emissions related to a unit of conditioned and transported liquid hydrogen up to the consumption gate.

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EN ISO 4135:2022/prA1 Public enquiry

Comment end date 2026-04-14

Anaesthetic and respiratory equipment - Vocabulary - Amendment 1 (ISO 4135:2022/DAM 1:2026)

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prEN ISO 10298 Public enquiry

Comment end date 2026-02-26

Gas cylinders - Gases and gas mixtures - Determination of toxicity for the selection of cylinder valve outlets (ISO/DIS 10298:2025)

ISO 10298:2018 lists the best available acute-toxicity data of gases taken from a search of the current literature to allow the classification of gases and gas mixtures for toxicity by inhalation.

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prEN IEC 60071-1 Public enquiry

Comment end date 2026-03-11

Insulation co-ordination - Part 1: Definitions, principles and rules

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prEN 13075-2 Public enquiry

Comment end date 2026-03-27

Bitumens and bituminous binders - Determination of breaking behaviour - Part 2: Determination of fines mixing time of cationic bituminous emulsions

This document specifies a method for the determination of the fines mixing time of diluted cationic bituminous emulsions, under standardized conditions. WARNING - 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 identify the hazards and assess the risks involved in performing this test method and to implement sufficient control measures to protect individual operators (and the environment). This includes appropriate safety and health practices and determination of the applicability of regulatory limitations prior to use.

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prEN 15634-6 Public enquiry

Comment end date 2026-03-31

Foodstuffs - Detection of food allergens by molecular biological methods - Part 6: Wheat (Triticum L.) and Rye (Secale cereale) - Qualitative detection of a specific DNA sequence in cooked sausages by real-time PCR

This document specifies a method for the qualitative detection of DNA of the general wheat and rye in cooked sausages using real-time PCR based on the glutenin gene, in the context of allergen analyses. This document does not apply to differentiating between wheat (Triticum L.) and rye (Secale cereale). The method was previously validated in an interlaboratory study (ring trial). The limit of detection of the wheat and rye real-time PCR has been determined experimentally to be around 80 mg wheat or rye per kg for the matrix ‘cooked sausage’. For autoclaved material the detection limit can increase significantly.

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prEN ISO 17573-1 Public enquiry

Comment end date 2026-03-01

Electronic fee collection - System architecture for vehicle-related tolling - Part 1: Reference model (ISO/DIS 17573-1:2025)

This document defines the architecture of electronic fee collection (EFC) system environments, in which a customer with one contract may use a vehicle in a variety of toll domains with a different toll charger for each domain. EFC systems conforming to this document can be used for various purposes including road (network) tolling, area tolling, collecting fees for the usage of bridges, tunnels, ferries, for access or for parking. From a technical point of view the considered toll systems may identify vehicles subject to tolling by means of electronic equipment on-board in a vehicle or by other means (e.g. automatic number plate recognition, ANPR). From a process point of view the architectural description focuses on toll determination, toll charging, and the associated enforcement measures. The actual collection of the toll, i.e. collecting payments, is outside of the scope of this document. The architecture in this document is defined with no more details than required for an overall overview, a common language, an identification of the need for and interactions among other standards, and the drafting of these standards. This document as a whole provides: — the enterprise view on the architecture, which is concerned with the purpose, scope and policies governing the activities of the specified system within the organization of which it is a part; — the terms and definitions for common use in an EFC environment; — a decomposition of the EFC systems environment into its main enterprise objects; — the roles and responsibilities of the main actors. This document does not impose that all roles perform all indicated responsibilities. It should also be clear that the responsibilities of a role may be shared between two or more actors. Mandating the performance of certain responsibilities is the task of standards derived from this architecture; — identification of the provided services by means of action diagrams that underline the needed standardised exchanges; — identification of the interoperability interfaces for EFC systems, in specialised standards (specified or to be specified).

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prEN ISO 20769-2 Public enquiry

Comment end date 2026-03-12

Non-destructive testing - Radiographic inspection of corrosion and deposits in pipes by X- and gamma rays - Part 2: Double wall radiographic inspection (ISO/DIS 20769-2:2026)

This document specifies fundamental techniques of film and digital radiography with the object of enabling satisfactory and repeatable results to be obtained economically. The techniques are based on generally recognized practice and fundamental theory of the subject. This document applies to the radiographic examination of pipes in metallic materials for service induced flaws such as corrosion pitting, generalized corrosion and erosion. Besides its conventional meaning, "pipe" as used in this document is understood to cover other cylindrical bodies such as tubes, penstocks, boiler drums and pressure vessels. Weld inspection for typical welding process induced flaws is not covered, but weld inspection is included for corrosion/erosion type flaws. The pipes can be insulated or not, and can be assessed where loss of material due, for example, to corrosion or erosion is suspected either internally or externally. This document covers double wall inspection techniques for detection of wall loss, including double wall single image (DWSI) and double wall double image (DWDI). Note that the DWDI technique described in this document is often combined with the tangential technique covered in ISO 20769-1. This document applies to in-service double wall radiographic inspection using industrial radiographic film techniques, computed digital radiography (CR) and digital detector arrays (DDA).

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prEN 17773 Public enquiry

Comment end date 2026-03-24

Organic and organo-mineral fertilizers - Determination of the dry matter content

This document specifies the procedure for the determination and calculation of the dry matter content of organic and organo-mineral fertilizers for which the results of the performed analysis are to be calculated to the dry matter content basis. This document is applicable and validated for several types of matrices as indicated in Annex A. This document is applicable to the component materials “by-products”, “thermal oxidation materials and derivatives”, or “recovered high-purity materials”, when used as components of fertilizing products, as well as the fertilizing products blends where a blend is a mix of at least two of the following components: fertilizers, liming materials, soil improvers, growing media, inhibitors, plant biostimulants and where the following category organic fertilizers, organo-mineral fertilizers is the highest % in the blend by mass or volume, or in the case of liquid form by dry mass. If the organic fertilizer or the organo-mineral fertilizers is not the highest % in the blend, the European Standard for the highest % of the blend applies. In case a fertilizing product blend is composed of components in equal quantity, the user decides which standard to apply. Variations in analytical methods for fertilizing product blends can lead to differing results as some components or matrix interactions can affect the outcome. Validation procedures have shown that developed standard methods are robust and reliable across diverse product compositions, but possible interferences and unexpected results when analysing fertilizing product blends are possible.

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prEN 1428 Public enquiry

Comment end date 2026-03-31

Bitumens and bituminous binders - Determination of water content in bituminous emulsions - Azeotropic distillation method

This document specifies a method for the determination of the water content in bituminous emulsions by means of azeotropic distillation. 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 to determine the applicability of regulatory limitations prior to use.

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prEN 17151-1 Public enquiry

Comment end date 2026-02-24

Plastics piping systems for non-pressure underground conveyance and storage of surface water - Part 1: Test method for determination of long-term compression strength of boxes

This document specifies a test method for determining the long-term compression strength for a specified period on boxes made of thermoplastics materials for non-pressure underground conveyance and storage of non-potable water. The document is applicable for boxes which maintain their linear behaviour over the specified period.

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prEN IEC 62496-2-6 Public enquiry

Comment end date 2026-03-11

Optical circuit boards - Part 2-6: Basic test and measurement procedures - Near field pattern analysis of multimode optical waveguides with rectangular core(s) using encircled flux methodology

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prEN 17833 Public enquiry

Comment end date 2026-03-24

Railway applications - Simulation Credibility

This document sets out a framework to replace and/or complement physical tests with virtual tests by introducing simulation credibility for a given railway application. This covers simulation development, use, and management. Users of this document can be: - simulation engineers or organizations and their subcontractors, - standardization working groups to introduce simulations in their standards or - technical assessors and conformity assessment bodies. This document provides guidance, particularly when simulations are not yet defined. Where applicable, this document can be used in conjunction with existing standards pertaining to the use of simulations. If simulation is already recognized in existing domain-specific standards, this document does not modify the requirements of those standards. However, it may assist in future improvements and harmonization. It does not provide domain-specific guidance on applying simulations. For the use of technologies including, but not limited to, artificial intelligence, model-scale testing, and distributed computing, relevant potential technology based risks can arise.

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prEN ISO 23401-3 Public enquiry

Comment end date 2026-04-07

Dentistry - Denture lining materials - Part 3: Soft type materials for long-term use (ISO/DIS 23401-3:2026)

This document specifies requirements for soft type denture lining materials suitable for long-term use and the test methods to determine compliance with these requirements. This document also specifies requirements for packaging, marking the products and for the instructions for use to be supplied by the manufacturer. These materials may also be used for maxillofacial prostheses. This document is not applicable to hard type denture lining materials or soft type denture lining materials for short-term use.

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prEN IEC 61375-2-3:2025 Public enquiry

Comment end date 2026-02-26

Electronic railway equipment - Train communication network (TCN) - Part 2-3: TCN communication profile

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