Standartų projektų sąrašas

prEN 50600-2-3:2026 Archyvuotas

Komentavimo iki data 2026-03-27

Informacinės technologijos. Duomenų centro įrenginiai ir infrastruktūros. 2-3 dalis. Aplinkos kontrolė

This document addresses environmental control within data centres based upon the criteria and classifications for “availability”, “security” and “resource and energy efficiency enablement” within EN 50600-1. This document specifies requirements and recommendations for the following: a) temperature control; b) fluid movement control; c) relative humidity control; d) particulate control; e) vibration; f) granularity level for energy efficiency enablement; g) physical security of environmental control systems.

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prEN 16039 Viešoji apklausa

Komentavimo iki data 2026-04-07

Vandens kokybė. Ežerų hidromorfologinių charakteristikų vertinimo vadovas

This document is applicable to lakes, which are water bodies occupying one or more basins with surface areas typically greater than 1 ha (0,01 km2) and maximum depths (at mean water level) greater than 1 m. All types of permanent and temporary lakes, including natural, modified and artificial, freshwater and brackish, except for those systems which regularly connect to the sea, are included in this document. Based on these criteria, it can be estimated that there are at least 500 000 natural lakes across Europe, most of which are located in the glaciated landscapes in northern and western provinces and in Scandinavia. Lakeland districts also occur locally in areas such as large river catchments (e.g. the Danubian plain) and around the Alps. Elsewhere, naturally occurring lakes are relatively sparse and in such areas reservoirs or pits are more common. This document is designed to: a) support environmental and conservation agencies in meeting the monitoring requirements of the WFD (Article 8, Annex II and Annex V); b) generate data sets appropriate for monitoring and reporting of Natura 2000 sites designated under the Habitats Directive and the Birds Directive; c) provide information supporting other environmental reporting requirements (e.g. in relation to biodiversity or environmental impact assessment); d) support lake management and restoration initiatives. This document: e) defines the key term of ‘hydromorphology’ and other terms relating to the morphological characteristics of lakes and their hydrological regimes; f) details essential features and processes of lakes that should be characterized as part of a hydromorphological survey and for determining the hydromorphological condition of a lake; g) identifies and defines the key pressures affecting European lakes; h) provides guidance on strategies for collecting hydromorphological data depending on resources available and the anticipated use of the assessment; a hierarchy of approaches is recognized from the ‘overview method’ utilizing existing databases, maps and remote sensing data through to recognized field-based survey techniques such as Lake Habitat Survey (LHS) [3]; i) offers guidance on data presentation; j) establishes guidance on data quality assurance issues. This document does not deal with biological assessments in lakes such as the presence or absence of individual species or community composition, nor does it attempt to link specific hydromorphological features with their associated biological communities or to create a classification based on such links. However, it is relevant where plants or other organisms form significant structural elements of the habitat (e.g. a gradation from riparian to littoral vegetation). With respect to the WFD, the hydromorphological condition of a lake only contributes to its status classification at high ecological status (HES). Hydromorphological conditions are not defined for good and moderate status but shall be sufficient to support the biological elements. However, some countries are now beginning to classify lakes according to their hydromorphology. The information gathered by using this standard can provide a basis for classification, but this classification is the subject of EN 16870 and not EN 16039.

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prEN IEC 61850-7-4:2026 Viešoji apklausa

Komentavimo iki data 2026-04-22

Elektros tiekimo sistemų automatizavimo ryšių tinklai ir sistemos. 7-4 dalis. Pagrindinė ryšių struktūra. Suderinamos loginių mazgų ir duomenų objektų klasės

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prEN 3988 Viešoji apklausa

Komentavimo iki data 2026-04-28

Aerospace series - Test methods for metallic materials - Constant amplitude strain-controlled low cycle fatigue testing

This document applies to uniaxial strain-controlled low cycle fatigue testing of metallic materials governed by EN aerospace standards. It defines the properties that need to be determined and the terms used in describing the tests and test pieces. It specifies the equipment, the test pieces, the method of testing and the presentation of results. It applies to testing at ambient and elevated temperatures. The purpose of this document is to ensure the comparability and reproducibility of the test results. It does not cover the evaluation or interpretation of the results. This document is restricted to the use of test pieces having a circular cross-section. In some particular cases the practice can be applied to flat test pieces. The major difficulties concern the preparation of the test pieces and their alignment in the grips.

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prEN IEC 61969-3:2026 Viešoji apklausa

Komentavimo iki data 2026-05-22

Elektrinei ir elektroninei įrangai skirtos mechaninės konstrukcijos. Lauke naudojami apgaubai. 3 dalis. Aplinkos sąlygų reikalavimai, bandymai ir saugos aspektai

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EN 1993-1-5:2024/prA1 Viešoji apklausa

Komentavimo iki data 2026-05-28

Eurokodas 3. Plieninių konstrukcijų projektavimas. 1-5 dalis. Lakštiniai konstrukcijų elementai

1.1 Scope of EN 1993-1-5 (1) This document provides rules for structural design of stiffened and unstiffened nominally flat plates which are subject to in-plane forces. (2) Non-uniform stress distributions due to shear lag, in-plane load introduction and plate buckling are covered. The effects of out-of-plane loading are outside the scope of this document. NOTE 1 The rules in this part complement the rules for class 1, 2, 3 and 4 sections, see EN 1993-1-1. NOTE 2 For the design of slender plates which are subject to repeated direct stress and/or shear and also fatigue due to out-of-plane bending of plate elements ("breathing"), see EN 1993-2 and EN 1993-6. NOTE 3 For the effects of out-of-plane loading and for the combination of in-plane effects and out-of-plane loading effects, see EN 1993-2 and EN 1993-1-7. (3) Single plate elements are considered as nominally flat where the curvature radius r in the direction perpendicular to the compression satisfies, as illustrated in Figure 1.1: r≥b^2/t (1.1) where b is the panel width; t is the plate thickness. Figure 1.1 - Definition of plate curvature 1.2 Assumptions (1) Unless specifically stated, EN 1990, the EN 1991 series and EN 1993-1-1 apply. (2) The design methods given in EN 1993-1-5 are applicable if - the execution quality is as specified in EN 1090-2 and - the construction materials and products used are as specified in the relevant parts of the EN 1993 series or in the relevant material product specifications.

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prEN 81-58 Archyvuotas

Komentavimo iki data 2026-04-02

Liftų konstravimo ir įrengimo saugos taisyklės. Tikrinimas ir bandymai. 58 dalis. Lifto aikštelės durų atsparumo ugniai bandymas

This document defines the fire resistance test and requirements for landing doors which are intended to provide a barrier to the spread of fire from the landing side and via the lift well in buildings for a period of time classified in this document. The fire resistance requirements are expressed in terms of integrity (E), insulation (EI) and radiation (EW). It is applicable to landing doors installed in the lift well openings at landings and used as means of access to lift car. It also specifies the method of testing and classification of fire resistance of landing doors. The test method is only valid for furnaces where the door is mounted in a vertical position. The test method specifies the measurement of integrity and if required the measurement of radiation and thermal insulation. This document refers to CO2 as means of tracing the propagation of fire. The document does not cover hazards due to emission of gases. This document is not applicable to landing doors which are installed before the date of its publication.

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prEN IEC 61009-1:2026 Viešoji apklausa

Komentavimo iki data 2026-04-08

Buitiniai ir panašios paskirties liekamąja srove valdomi jungtuvai su integruota apsauga nuo viršsrovių. 1 dalis. Bendrosios taisyklės

This document gives general requirements and tests for residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (hereafter referred to as RCBOs), for rated operational voltages not exceeding 440 V AC, with rated frequencies of 50 Hz, 60 Hz or 50/60 Hz and rated currents not exceeding 125 A and rated short-circuit capacities not exceeding 25 000 A. RCBOs are intended to provide fault protection (previously referred to as protection against indirect contact), the exposed conductive parts of the installation being connected to an appropriate earth electrode. These devices are also intended to protect against overcurrents in the wiring installations of buildings and similar applications. They are also intended to be used to provide protection against fire hazards due to a persistent earth fault current. RCBOs having a rated residual operating current not exceeding 30 mA are used for fault protection and additional protection in the case of failure of the protective provisions against electric shock. This document applies to RCBOs performing simultaneously the functions of detection of the residual current, of comparison of the value of this current with the residual operating value and of opening of the protected circuit when the residual current exceeds this value. These devices also perform the function of making, carrying and breaking overcurrents under specified conditions. RCBOs are intended to be operated by ordinary or uninstructed persons and designed not to require maintenance. The requirements of this document apply for standard conditions (see 7.1). Additional requirements can be necessary for RCBOs used in locations which have severe environmental conditions. RCBOs within the scope of this document are intended for use in an environment with pollution degree 2 (see 7.3). RCBOs are suitable for isolation. Special precautions (e.g. surge protective devices) can be necessary when excessive overvoltages are likely to occur on the supply side (for example in the case of supply through overhead lines, see IEC 60364-4-44 and IEC 60364-5-53). RCBOs, with the exception of those with an uninterrupted neutral, are suitable for use in IT systems. RCBOs of the general type are resistant to current surges, including the case where surge voltages (as a result of switching transients or induced by lightning) cause loading currents in the installation without occurrence of flashover. RCBOs of type S are considered to be sufficiently resistant against unwanted tripping even if the surge voltage causes a flashover and a follow-on current occurs. This document also applies to RCBOs obtained by the assembly of an adaptable residual current device with a circuit-breaker. The mechanical assembly is intended to be effected in the factory by the manufacturer, or on site, in which case the requirements of Annex G apply. It also applies to RCBOs having more than one rated current, provided that the means for changing from one discrete rating to another is not accessible in normal service and that the rating cannot be changed without the use of a tool. Particular requirements are necessary for RCBOs intended to be used at frequencies other than 50 Hz or 60 Hz. For RCBOs incorporated in, or intended for association with socket-outlets only, the requirements of this document can be used, as far as applicable, in conjunction with the requirements of IEC 60884-1 or the national requirements of the country where the product is placed on the market. This document does not apply to: .........

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prEN ISO 25935 Viešoji apklausa

Komentavimo iki data 2026-04-21

Geometrinės gaminio specifikacijos (GPS). Suvaržytosios būklės (ISO/DIS 25935:2026)

This document specifies rules for restrained states.

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prEN 1937 Viešoji apklausa

Komentavimo iki data 2026-04-28

Klijai. Cementinių ir kalcio sulfato grindų išlyginimo mišinių bandymo metodas. Standartinės maišymo procedūros

This document specifies the procedure for mixing cementitious and calcium sulfate-based floor levelling compounds with water and/or a liquid component as supplied by the manufacturer. This document applies to cementitious, and calcium sulfate-based floor levelling compounds used for the preparation of subfloors to ensure the suitability of the substrate prior to the installation of floor coverings. By using the floor levelling compound, a homogeneous layer is built up on the load-bearing substrate, to ensure consistent absorbency, evenness and strength.

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prEN IEC 61010-2-030:2026 Viešoji apklausa

Komentavimo iki data 2026-05-20

Saugos reikalavimai, keliami elektrinei matavimo, valdymo ir laboratorinei įrangai. 2-030 dalis. Ypatingieji reikalavimai, keliami bandymo ar matavimo grandines turinčiai įrangai

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EN 1999-1-4:2023/prA1 Viešoji apklausa

Komentavimo iki data 2026-05-28

Eurokodas 9. Aliumininių konstrukcijų projektavimas. 1-4 dalis. Šaltai formuoti lakštiniai konstrukcijų profiliuočiai

1.1 Scope of EN 1999-1-4 (1) EN 1999-1-4 gives design requirements for cold-formed trapezoidal aluminium sheeting. It applies to cold-formed aluminium products made from hot rolled or cold rolled sheet or strip that have been cold-formed by such processes as cold-rolled forming or press-breaking. NOTE 1 The rules in this part complement the rules in other parts of EN 1999-1. NOTE 2 The execution of aluminium structures made of cold-formed structures for roof, ceiling, floor and wall applications is covered in EN 1090-5. (2) EN 1999-1-4 gives methods for stressed-skin design using aluminium sheeting as a structural diaphragm. (3) EN 1999-1-4 does not apply to cold-formed aluminium profiles like C- and Z- profiles nor cold-formed and welded circular or rectangular hollow sections. (4) EN 1999-1-4 gives methods for design by calculation and for design assisted by testing. The methods for the design by calculation apply only within stated ranges of material properties and geometrical properties for which sufficient experience and test evidence is available. These limitations do not apply to design by testing. (5) EN 1999-1-4 does not cover load arrangement for loads during execution and maintenance. 1.2 Assumptions (1) For the design of new structures, EN 1999 is intended to be used, for direct application, together with EN 1990, EN 1991, EN 1992, EN 1993, EN 1994, EN 1995, EN 1997 and EN 1998. EN 1999 is intended to be used in conjunction with: - European Standards for construction products relevant for aluminium structures; - EN 1090-1, Execution of steel structures and aluminium structures - Part 1: Requirements for conformity assessment of structural components; - EN 1090-5, Execution of steel structures and aluminium structures - Part 5: Technical requirements for cold-formed structural aluminium elements and cold-formed structures for roof, ceiling, floor and wall applications.

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prEN IEC 63115-2:2026 Archyvuotas

Komentavimo iki data 2026-04-03

Antriniai elementai ir baterijos su šarminiais arba kitokiais nerūgštiniais elektrolitais. Sandarintieji įkraunamieji nikelio-metališkojo hidrido elementai ir moduliai, naudojami pramonėje. 2 dalis. Sauga

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prEN 3874 Viešoji apklausa

Komentavimo iki data 2026-04-14

Aerospace series - Test methods for metallic materials - Constant-amplitude force-controlled low-cycle fatigue testing

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prEN ISO 17186 Viešoji apklausa

Komentavimo iki data 2026-04-23

Oda. Fizikiniai ir mechaniniai bandymai. Paviršiaus dangos storio nustatymas (ISO/DIS 17186:2026)

ISO 17186:2011 specifies a method for determining the thickness of the surface coating applied to leather when measured under zero compression. It is applicable to all types of leather.

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prEN ISO 20899 Viešoji apklausa

Komentavimo iki data 2026-05-02

Vandens kokybė. Plutonis ir neptūnis. Bandymas ICP-MS metodu (ISO/DIS 20899:2026)

This document specifies methods to determine the 239Pu, 240Pu, 241Pu and 237Np by inductively coupled plasma mass spectrometry (ICP-MS). The mass concentrations obtained can be converted into activity concentrations. Due to its relatively short half-life and 238U isobaric interference, 238Pu can hardly be measured by this method. To quantify 238Pu isotope by mass spectrometry, other techniques can be used (ICP-MS with collision-reaction cell, ICP-MS/MS with collision-reaction cell or chemical separation). Alpha spectrometry measurement, as described in ISO 13167,[8] is currently used[9]. The method is applicable to test samples of supply/drinking water, rainwater, surface and ground water, marine water, as well as cooling water, industrial water, domestic, and industrial wastewater after proper sampling and handling, and test sample preparation. A chemical separation of Np and Pu, with quantitative removal of all other elements (including uranium, americium, etc.) is mandatory, given all the potential interferences that may bias the measurement or lead to false positives. Chemical separations can eliminate most of the 238U. However, use of reagents, glassware, and atmosphere for the chemical separation, will also add 238U to the samples and prevent measurement of 238Pu. The limit of detection depends on the sample volume, the instrument used, the background count rate, the detection efficiency, the counting time, and the chemical yield. The detection limit of the method described in this document, using currently available ICP-MS apparatus, is approximately 1 mBq·l-1 for 239Pu, 240Pu, 237Np and 1 Bq·l-1 for 241Pu, which is lower or of the same order of magnitude than the WHO criteria for safe consumption of drinking water (1 mBq·l-1 for 239Pu, 240Pu, 237Np and 10 Bq·l-1 for 241Pu[4]).This method covers the measurement of those radionuclides in water at activity concentrations between approximately[10][11]: — 1 mBq·l−1 to 5 Bq·l−1 for 239Pu, 240Pu and 237Np; — 1 Bq·l−1 to 5 Bq·l−1 for 241Pu. Samples with higher activity concentrations than 5 Bq·l−1 can be measured if a dilution is performed. The higher is the concentration factor, the lower are the LD and LQ expressed in Bq/L of water. A preconcentration is especially useful for the quantification of 241Pu that is usually the less abundant isotope of plutonium. The method described in this document is applicable in the event of an emergency situation. Filtration of the test sample is necessary. The analysis of 239Pu, 240Pu, 241Pu and 237Np adsorbed to suspended matter is not covered by this method. The analysis of the insoluble fraction requires a mineralization step that is not covered by this document. In this case, the measurement is performed separately on each phase or the total phase. It is the user’s responsibility to ensure the validity of this test method for the water samples tested.

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prEN 4726 Viešoji apklausa

Komentavimo iki data 2026-05-19

Aerospace series - Aesthetical acceptance parameters for cabin equipment

This document specifies the inspection rules and the cosmetic acceptance criteria for surfaces of aircraft cabin equipment. Surfaces are considered under the aspects of technical feasibility of the industrial design. This document outlines the framework between customers, suppliers or manufacturers and OEMs with regard to cosmetic issues. This document aims to: a) provide the supplier or manufacturer with quality criteria to be met during the production-, testing- and quality-inspection-process; b) guide customer, OEM and supplier or manufacturer quality assurance with a description of cosmetic standards for the following inspections: — supplier or manufacturer internal QA inspection; — first article inspection; — source inspection; — incoming inspection; — final assembly line, cabin inspection; — customer presentation.

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EN 1998-5:2024/prA1 Viešoji apklausa

Komentavimo iki data 2026-05-28

Eurokodas 8. Atsparių žemės drebėjimui konstrukcijų projektavimas. 5 dalis. Geotechniniai aspektai, pamatai, atraminės ir požeminės konstrukcijos

1.1 Scope of EN 1998-5 (1) This document establishes general principles for the design and assessment of geotechnical systems in seismic regions. It gives general rules relevant to all families of geotechnical structures, to the design of foundations, retaining structures and underground structures and complements EN 1997-3 for the seismic design situation. (2) This document contains the basic performance requirements and compliance criteria applicable to geotechnical structures and geotechnical systems in seismic regions. (3) This document refers to the rules for the representation of seismic actions and the description of the seismic design situations defined in EN 1998-1-1 and provides specific definition of the seismic action applicable to geotechnical structures. 1.2 Assumptions (1) The assumptions of EN 1990 apply to this document.

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prEN IEC 60947-1:2026 Archyvuotas

Komentavimo iki data 2026-04-01

Žemosios įtampos perjungimo ir valdymo įrenginiai. 1 dalis. Bendrosios taisyklės

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prEN 3523 Viešoji apklausa

Komentavimo iki data 2026-04-14

Aerospace series - Steel 15CrMoV6 (1.7334) - Air melted - Hardened and tempered - Bars for machining - De ≤ 100 mm - 1 080 MPa ≤ Rm ≤ 1 280 MPas

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prEN ISO 21227-1 Viešoji apklausa

Komentavimo iki data 2026-04-30

Dažai ir lakai. Padengto paviršiaus defektų įvertinimas naudojant skaitmeninį vaizdų apdorojimą. 1 dalis. Bendrieji nurodymai (ISO/DIS 21227-1:2026)

ISO 21227-1:2003 gives definitions for and provides guidance in the use of optical imaging systems for the quantitative characterization of defects on coated surfaces that occur after exposure in various test methods, e.g. stone chipping, weathering or cross-cut testing. One aim of ISO 21227 is to use optical imaging to reproduce the results of already existing methods for visual assessment. Additionally, optical imaging provides further information which can be used for a more detailed evaluation of coating defects. This part of ISO 21227 contains a general introduction in optical-imaging methods and definitions. The performance of individual test methods and requirements for precision are described in other parts of the standard.

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prEN 566 Viešoji apklausa

Komentavimo iki data 2026-04-10

Alpinizmo įranga. Pakėlimo virvės. Saugos reikalavimai ir bandymo metodai

This document specifies safety requirements and test methods for slings used for mountaineering including climbing and related activities.

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prEN 18320 Viešoji apklausa

Komentavimo iki data 2026-05-19

Tekstilinės grindų dangos. Išvaizdos keitimas naudojant Vetterrmann'o būgną su poliuretaninėmis iškyšomis

This document describes procedures that use the mechanical action of a Vettermann drum tester using polyurethane studs to produce changes in appearance (surface structure and colour) to all types of textile floor coverings. It does not include pilling or colour changes due to other actions. Changes produced by this drum tester are assessed in accordance with the applicable assessment standard.

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prEN ISO 25063 Viešoji apklausa

Komentavimo iki data 2026-04-07

Sistemų ir programinės įrangos inžinerija. Sistemų ir programinių produktų kokybės reikalavimai ir įvertinimas (SQuaRE). Tinkamumui naudoti skirtas bendras srities formatas (CIF). Naudojimo konteksto aprašas (ISO/DIS 25063:2026)

ISO/IEC 25063:2014 describes the Common Industry Format (CIF) for context of use descriptions and specifies the contents of both high-level and detailed descriptions of the context of use for an existing, intended, implemented or deployed system. A context-of-use description includes information about the users and other stakeholder groups, the characteristics of each user group, the goals of the users, the tasks of the users, and the environment(s) in which the system is used. The context of use description is applicable to software and hardware systems, products or services (excluding generic products, such as a display screen or keyboard). It is important to gather and analyse information on the current context in order to understand and then describe the context that will apply in the future system. The context of use description provides a collection of data relevant for analysis, specification, design and evaluation of an interactive system from the perspective of the various user groups and other stakeholders.

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prEN IEC 60034-14:2026 Viešoji apklausa

Komentavimo iki data 2026-04-10

Sukiosios elektros mašinos. 14 dalis. Tam tikrų mašinų su 56 mm ir ilgesniais velenais mechaninė vibracija. Vibracijos intensyvumo matavimas, įvertinimas ir ribinės vertė

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