Standartų projektų sąrašas

prEN ISO 23548 Viešoji apklausa

Komentavimo iki data 2025-08-05

Radioaktyvumo matavimas. Alfa spinduliuotę skleidžiantys radionuklidai. Bendrieji tyrimo metodai taikant gama spektrometriją (ISO 23548:2024)

This document describes a generic test method for measuring alpha emitting radionuclides, for all types of samples (soil, sediment, construction material, foodstuff, water, airborne, environmental bio-indicator, human biological samples as urine, faeces etc.) by alpha spectrometry. This method can be used for any type of environmental study or monitoring of alpha emitting radionuclides activities. If relevant, this test method requires appropriate sample pre-treatment followed by specific chemical separation of the test portion in order to obtain a thin source proper to alpha spectrometry measurement. This test method can be used to determine the activity, specific activity or activity concentration of a sample containing alpha emitting radionuclides such as 210Po, 226Ra, 228Th, 229Th, 230Th, 232Th, 232U,234U, 235U, 238U, 238Pu, 239+240Pu, 241Am or 243+244Cm. This test method can be used to measure very low levels of activity, one or two orders of magnitude less than the usual natural levels of alpha emitting radionuclides. Annexes B of UNSCEAR 2000 and UNSCEAR 2008 give, respectively, typical natural activity concentrations for air, foods, drinking waters and, soils and building materials. The detection limit of the test method depends on the amount of the sample material analysed (mass or volume) after concentration, chemical yield, thickness of measurement source and counting time. The quantity of the sample to be collected and analysed depends on the expected activity of the sample and the detection limit to achieve.

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prEN ISO/IEC 19788-1 Viešoji apklausa

Komentavimo iki data 2025-08-10

Informacinės technologijos mokymuisi, ugdymui ir rengimui. Mokymosi išteklių metaduomenys. 1 dalis. Struktūra (ISO/IEC 19788-1:2024)

This document provides a framework that applies to all resources and specifies how to describe resources. It includes rules governing the way in which descriptions are made. This document provides principles, rules and structures for specifying the description of any type of resource; it identifies and establishes attributes for specifying properties, resources classes, vocabularies and application profiles and the rules governing their use. The key principles set out in this document are framed in a user-centric context and aim to meet the requirements of multilingual and cultural adaptability from a global perspective. This document can be used for the specification of metadata describing any type of resource (not only learning resources). This document is information-technology-neutral and defines a set of common approaches. This document specifies generic properties, generic resource classes and predefined rule sets for content value rules. These generic elements are proposed in such a way that they can be widely reused, thereby promoting interoperability. This document is applicable to the development of: — application profiles based on the ISO/IEC 19788 series but not part of it or any other document based on it, — standards consisting of the description of resources (in a broad sense), whether they belong to the domain of education or to any other domain.

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prEN ISO 13971 Viešoji apklausa

Komentavimo iki data 2025-08-05

Šaldymo sistemos ir šilumos siurbliai. Lankstieji vamzdyno elementai, vibracijos izoliatoriai, kompensacinės jungtys ir nemetaliniai vamzdžiai. Reikalavimai ir klasifikavimas (ISO 13971:2012)

This International standard describes requirements, design and installation of flexible pipe elements (e.g., metallic flexible pipe, metallic flexible tube, vibration isolator, expansion joint) and non-metallic tube used in the refrigerant circuits of refrigerating systems and heat pumps. It also describes the requirements to qualify the tightness and permeability of non-metallic tubes (e.g., plastic) used in evaporating and/or condensing sides of refrigerating systems and heat pumps. This International standard does not apply to flexible pipes that are only occasionally stressed beyond the elastic limit (e.g., during repair work), or to joints that are free to rotate or hinge.

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prEN 601 Viešoji apklausa

Komentavimo iki data 2025-08-10

Aliuminis ir aliuminio lydiniai. Liejiniai. Su maisto produktais besiliečiančių liejinių cheminė sudėtis

This document specifies the maximum mass content of alloying elements and impurities in aluminium and aluminium alloy cast materials and articles designed to be in contact with foodstuff. It contains provisions for the demonstration of conformity of products with the present document. NOTE Materials include ingots and liquid metal. Articles are finished goods.

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prEN ISO 4491-3 Viešoji apklausa

Komentavimo iki data 2025-08-10

Metalų milteliai. Deguonies kiekio nustatymas redukcijos metodais. 3 dalis. Vandeniliu redukuojamas deguonis (ISO/FDIS 4491-3:2025)

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prEN 18122 Viešoji apklausa

Komentavimo iki data 2025-08-05

Aukštos vaikų kėdės ir pakylos su lapteliais. Pakylos su lapteliais. Reikalavimai ir bandymo metodai

This document specifies safety requirements and test methods for learning towers for domestic use that are intended to raise children to allow them to carry out tasks on kitchen worktops, bathroom sinks, etc. in a standing position. Learning towers are normally used by children from when they are able to stand unaided up to approximately 6 years old. Note If the product offers other functions other standards can be applied.

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prEN 1918-1 Viešoji apklausa

Komentavimo iki data 2025-08-05

Dujų infrastruktūra. Požeminė dujų saugykla. 1 dalis. Funkcinės rekomendacijos dėl saugyklų vandeninguose sluoksniuose

This document covers the functional recommendations for design, construction, testing, commissioning, operation, maintenance and abandonment of underground gas storage (UGS) facilities in aquifers up to and including the wellhead. It specifies practices, which are safe and environmentally acceptable. For necessary surface facilities for underground gas storage, EN 1918 5 applies. In this context “gas” refers to flammable gas: — which is in a gaseous state at a temperature of 15 °C and under a pressure of 0,1 MPa (the stored product is also named fluid); — which meets specific quality requirements in order to maintain underground storage integrity, performance, environmental compatibility and fulfils contractual requirements. This comprises: — gas not in liquid phase under subsurface conditions; — methane-rich gases; — natural gas; — biomethane; — synthetic methane; — hydrogen of various purities; — any mixtures of the gases above; — hydrocarbon gas in liquid phase under subsurface conditions such as; — ethylene; — liquified petroleum gas (LPG). NOTE 1 Correspondingly the EN 1918 series can be considered where applicable for underground storage of any other fluid e.g. helium, carbon dioxide, compressed air, rDME (renewable dimethyl ether) and hydrogen transport fluids (such as ammonia and LOHC). This document is not intended to be applied retrospectively to existing facilities. NOTE 2 Correspondingly this document can be considered for major conversions in case of significant change of gas composition.

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prEN 1918-4 Viešoji apklausa

Komentavimo iki data 2025-08-05

Dujų infrastruktūra. Požeminė dujų saugykla. 4 dalis. Funkcinės rekomendacijos dėl saugyklų uolų tuštumose

This document covers the functional recommendations for design, construction, testing, commissioning, operation, maintenance and abandonment of underground gas storage (UGS) facilities in mined rock caverns up to and including the wellhead. This document specifies practices which are safe and environmentally acceptable. For necessary surface facilities for underground gas storage, EN 1918 5 applies. In this context, “gas” refers to flammable gas: — which is in a gaseous state at a temperature of 15 °C and under a pressure of 0,1 MPa (the stored product is also named fluid); — which meets specific quality requirements in order to maintain underground storage integrity, performance, environmental compatibility and fulfils contractual requirements. This comprises: — gas not in liquid phase under subsurface conditions; — methane-rich gases; — natural gas; — biomethane; — synthetic methane; — hydrogen of various purities; — any mixtures of the gases above; — hydrocarbon gas in liquid phase under subsurface conditions such as; — ethylene; — liquified petroleum gas (LPG). NOTE 1 Correspondingly the EN 1918 series can be considered where applicable for underground storage of any other fluid e.g. helium, carbon dioxide, compressed air, rDME (renewable dimethyl ether) and hydrogen transport fluids (such as ammonia and LOHC). Gases that are liquid in subsurface conditions are not considered in this document. This document is not intended to be applied retrospectively to existing facilities. NOTE 2 Correspondingly this document can be considered for major conversions in case of significant change of gas composition.

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prEN 1918-3 Viešoji apklausa

Komentavimo iki data 2025-08-05

Dujų infrastruktūra. Požeminė dujų saugykla. 3 dalis. Funkcinės rekomendacijos dėl saugyklų druskos kasyklų tuštumose

This document covers the functional recommendations for design, construction, testing, commissioning, operation, maintenance and abandonment of underground gas storage (UGS) facilities in solution-mined salt caverns up to and including the wellhead. It specifies practices which are safe and environmentally acceptable. For necessary surface facilities for underground gas storage, EN 1918 5 applies. In this context “gas” refers to flammable gas: — which is in a gaseous state at a temperature of 15 °C and under a pressure of 0,1 MPa (the stored product is also named fluid); — which meets specific quality requirements in order to maintain underground storage integrity, performance, environmental compatibility and fulfils contractual requirements. This comprises: — gas not in liquid phase under subsurface conditions; — methane-rich gases; — natural gas; — biomethane; — synthetic methane; — hydrogen of various purities; — any mixtures of the gases above; — hydrocarbon gas in liquid phase under subsurface conditions such as; — ethylene; — liquified petroleum gas (LPG). NOTE 1 Correspondingly the EN 1918 series can be considered where applicable for underground storage of any other fluid e.g. helium, carbon dioxide, compressed air, rDME (renewable dimethyl ether) and hydrogen transport fluids (such as ammonia and LOHC). This document is not intended to be applied retrospectively to existing facilities. NOTE 2 Correspondingly this document can be considered for major conversions in case of significant change of gas composition.

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prEN 1918-2 Viešoji apklausa

Komentavimo iki data 2025-08-05

Dujų infrastruktūra. Požeminė dujų saugykla. 2 dalis. Funkcinės rekomendacijos dėl saugyklų naftos ir dujų telkiniuose

This document covers the functional recommendations for design, construction, testing, commissioning, operation, maintenance and abandonment of underground gas storage (UGS) facilities in oil and gas fields up to and including the wellhead. It specifies practices which are safe and environmentally acceptable. For necessary surface facilities for underground gas storage, EN 1918 5 applies. In this context “gas” refers to flammable gas: — which is in a gaseous state at a temperature of 15 °C and under a pressure of 0,1 MPa (the stored product is also named fluid); — which meets specific quality requirements in order to maintain underground storage integrity, performance, environmental compatibility and fulfils contractual requirements. This comprises: — gas not in liquid phase under subsurface conditions; — methane-rich gases; — natural gas; — biomethane; — synthetic methane; — hydrogen of various purities; — any mixtures of the gases above; — hydrocarbon gas in liquid phase under subsurface conditions such as; — ethylene; — liquified petroleum gas (LPG). NOTE 1 Correspondingly the EN 1918 series can be considered where applicable for underground storage of any other fluid e.g. helium, carbon dioxide, compressed air, rDME (renewable dimethyl ether) and hydrogen transport fluids (such as ammonia and LOHC). This document is not intended to be applied retrospectively to existing facilities. NOTE 2 Correspondingly this document can be considered for major conversions in case of significant change of gas composition.

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prEN 1918-5 Viešoji apklausa

Komentavimo iki data 2025-08-05

Dujų infrastruktūra. Požeminė dujų saugykla. 5 dalis. Funkcinės rekomendacijos dėl antžeminių įrenginių

This document covers the functional recommendations for the design, construction, testing, commissioning, operation, maintenance and abandonment of the surface facilities for underground gas storage (UGS), between the wellhead and the connection to the gas grid. It specifies practices which are safe and environmentally acceptable. For necessary subsurface facilities for underground storage, the relevant part of EN 1918 1 to EN 1918 4 applies. In this context, “gas” refers to flammable gas: — which is in a gaseous state at a temperature of 15 °C and under a pressure of 0,1 MPa. The stored product is also named fluid. — which meets specific quality requirements in order to maintain underground storage integrity, performance, environmental compatibility and fulfils contractual requirements. This comprises: — gas not in liquid phase under subsurface conditions: — methane-rich gases; — natural gas; — biomethane; — synthetic methane; — hydrogen of various purities; — any mixtures of the gases above; — hydrocarbon gas in liquid phase under subsurface conditions such as: — ethylene; — liquified petroleum gas (LPG). NOTE 1 Correspondingly the EN 1918 series can be considered where applicable for underground storage of any other fluid e.g. helium, carbon dioxide, compressed air, rDME (renewable dimethyl ether) and hydrogen transport fluids (such as ammonia and LOHC). This document is not intended to be applied retrospectively to existing facilities. NOTE 2 Correspondingly this document can be considered for major conversions in case of significant change of gas composition.

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prEN ISO 8067 Viešoji apklausa

Komentavimo iki data 2025-08-05

Lanksčios akytosios polimerinės medžiagos. Atsparumo plėšimui nustatymas (ISO/DIS 8067:2025)

This document specifies two methods for the determination of the tear strength of flexible cellular polymeric materials: — method A, using a trouser test piece; — method B, using an angle test piece without a nick.

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prEN 50562-2:2025 Viešoji apklausa

Komentavimo iki data 2025-08-05

Stacionarieji geležinkelio įrenginiai. Elektrinės traukos maitinimo sistemų sauga. 2 dalis. Bendrieji principai, taikomi ne įprastiniam naudojimui, funkcijoms ir savybėms

This document defines the process, protective measures and demonstration of safety in accordance with prEN 50126-1:2017 and prEN 50126-2:2017 for AC and DC electric traction power supply systems for railways. This document can also be applied to urban rail and trolleybus systems. All these systems can be elevated, at-grade and underground. This document has two parts: This document supports the implementation of non-conventional applications, functions and properties in electric traction power supply systems that remain after the application of prEN 50562 1:2025. NOTE EN 50562 1 establishes the code of practice for conventional applications, functions and properties in electric traction power supply systems. This document applies to electric traction power supply systems, which are new or are undergoing major changes as defined in the legal framework. For similar technology and similar hazardous scenarios, the safety considerations can be used as a guideline. This document does not apply to: — underground mine traction systems, — cranes, transportable platforms and similar transportation equipment on rails, temporary structures (e.g. exhibition structures) in so far as these are not supplied directly or via transformers from the contact line system and are not endangered by the traction power supply system, — suspended cable cars, — funicular railways, — magnetic levitated systems, This document does not consider aspects like IT-security or protection against other malevolent acts etc. It is assumed that those aspects are handled on the overall system level. NOTE For railways IT-security is covered in CLC/TS 50701. Because of the short life cycles of IT-security applications it is advisable to separate IT-security functions from safety functions at least on virtual levels. E.g. the frequent patch processes for updating the IT-security applications is expected to be independent from Safety applications.

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prEN 50562-1:2025 Viešoji apklausa

Komentavimo iki data 2025-08-05

Stacionarieji geležinkelio įrenginiai. Elektrinės traukos maitinimo sistemų sauga. 1 dalis. Bendrieji principai, taikomi įprastiniam naudojimui, funkcijoms ir savybėms

This document defines the process, protective measures and demonstration of safety in accordance with EN 50126-1:2017 and EN 50126 2:2017 for AC and DC electric traction power supply systems for railways. This document can also be applied to urban rail and trolleybus systems. All these systems can be elevated, at-grade and underground. This document has two parts: — prEN 50562 1:2025 establishes the code of practice for conventional applications, functions and properties in electric traction power supply systems. — prEN 50562 2:2025 supports the implementation of non-conventional applications, functions and properties in electric traction power supply systems. This document applies to electric traction power supply systems, which are new or are undergoing major changes as defined in the legal framework. For similar technology and similar hazardous scenarios, the safety considerations can be used as a guideline. This document does not apply to: — underground mine traction systems, — cranes, transportable platforms and similar transportation equipment on rails, temporary structures (e.g. exhibition structures) in so far as these are not supplied directly or via transformers from the contact line system and are not endangered by the traction power supply system, — suspended cable cars, — funicular railways, — magnetic levitated systems, This document does not consider aspects like IT-security or protection against any other malevolent acts. It is assumed that those aspects are handled on the overall system level. NOTE For railways IT-security is covered in CLC/TS 50701. Because of the short life cycles of IT security applications it is advisable to separate IT-security functions from safety functions at least on virtual levels. E.g. the frequent patch processes for updating the IT-security applications is expected to be independent from safety applications.

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prEN ISO 15494 Viešoji apklausa

Komentavimo iki data 2025-08-05

Pramoninės paskirties plastikinių vamzdynų sistemos. Polibutenas (PB), polietilenas (PE), padidinto atsparumo temperatūrai polietilenas (PE-RT), susiūtasis polietilenas (PE-X), polipropilenas (PP). Metrinės serijos, skirtos komponentų ir sistemos techniniams reikalavimams (ISO/DIS 15494:2025)

ISO 15494:2015 specifies the characteristics and requirements for components such as pipes, fittings, and valves made from one of the following materials intended to be used for thermoplastics piping systems in the field of industrial applications above and below ground: - polybutene (PB); - polyethylene (PE); - polyethylene of raised temperature resistance (PE-RT); - crosslinked polyethylene (PE-X); - polypropylene (PP). NOTE 1 Requirements for industrial valves are given in this International Standard and/or in other standards. Valves are to be used with components conforming to this International Standard provided that they conform additionally to the relevant requirements of this International Standard. This International Standard is applicable to either PB, PE, PE-RT, PE-X, or PP pipes, fittings, valves, and their joints and to joints with components of other plastics and non-plastic materials, depending on their suitability, intended to be used for the conveyance of liquid and gaseous fluids as well as solid matter in fluids for industrial applications such as the following: - chemical plants; - industrial sewerage engineering; - power engineering (cooling and general purpose water); - mining; - electroplating and pickling plants; - semiconductor industry; - agricultural production plants; - fire fighting; - water treatment; - geothermal. NOTE 2 Where relevant, national regulations (e.g. water treatment) are applicable. Other application areas are permitted if the requirements of this International Standard and/or applicable national requirements are fulfilled. National regulations in respect of fire behaviour and explosion risk are applicable. The components have to withstand the mechanical, thermal, and chemical demands to be expected and have to be resistant to the fluids to be conveyed.

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prEN ISO 14505-3 Viešoji apklausa

Komentavimo iki data 2025-08-05

Šiluminės aplinkos ergonomika. Transporto priemonių šiluminės aplinkos įvertinimas. 3 dalis. Šiluminio komforto įvertinimas pasitelkiant žmones (ISO/DIS 14505-3:2025)

ISO 14505-3:2006 gives guidelines and specifies a standard test method for the assessment, using human subjects, of thermal comfort in vehicles. It is not restricted to any particular vehicle but provides the general principles that allow assessment and evaluation. The method can be used to determine a measure of the performance of a vehicle for conditions of interest, in terms of whether it provides thermal comfort to people or not. This can be used in vehicle development and evaluation. ISO 14505-3:2006 is applicable to all types of vehicles, including cars, buses, trucks, off-road vehicles, trains, aircraft, ships, submarines, and to the cabins of cranes and similar spaces. It applies where people are enclosed in a vehicle and when they are exposed to outside conditions. For those exposed to outside conditions, such as riders of bicycles or motorcycles, drivers of open sports cars and operators of fork lift trucks without cabins, vehicle speed and weather conditions can dominate responses. The principles of assessment, however, will still apply. ISO 14505-3:2006 applies to both passengers and operators of vehicles where its application does not interfere with the safe operation of the vehicle.

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ISO/DIS 8820-3 Viešoji apklausa

Komentavimo iki data 2025-08-04

Road vehicles — Fuse-links — Part 3: Fuse-links with tabs (blade type) Type C (medium), Type E (high current) and Type F (miniature)

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ISO/DIS 8092-6 Viešoji apklausa

Komentavimo iki data 2025-08-04

Kelių transporto priemonės. Vidaus elektros laidų pynių jungtys. 6 dalis. Transporto priemonėje įrengtas eternetas, bendrieji eksploatacinių charakteristikų reikalavimai ir sąsajų apibūdinimai

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EN IEC 62127-3:2023/prA1:2025 Viešoji apklausa

Komentavimo iki data 2025-08-01

Ultragarsas. Hidrofonai. 3 dalis. Hidrofonų, skirtų ultragarsiniams laukams, savybės

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prEN ISO 8742 Viešoji apklausa

Komentavimo iki data 2025-07-31

Griovėtieji kaiščiai. Trečdalio kaiščio ilgio grioveliai centrinėje dalyje (ISO/DIS 8742:2025)

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prEN ISO 10565 Viešoji apklausa

Komentavimo iki data 2025-08-15

Aliejingosios sėklos. Aliejaus ir vandens kiekių vienalaikis nustatymas. Impulsinio magnetinio branduolių rezonanso spektrometrijos metodas (ISO/DIS 10565:2025)

This International Standard specifies a rapid method for the determination of the oil and water contents of commercial oilseeds using pulsed nuclear magnetic resonance (NMR). It is applicable to rapeseeds, soya beans, linseeds and sunflower seeds with a water content less than 10 %. For seeds with higher water contents, drying is necessary before the oil content can be determined by pulsed NMR. NOTE 1 This method has been tested with rapeseeds, soya beans, linseeds and sunflower seeds. This does not, however, preclude its applicability to other commercial seeds whose oil is liquid at the temperature of measurement. NOTE 2 The reproducibility values are generally higher than those obtained by the drying method (ISO 665)

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prEN IEC 63350:2025 Viešoji apklausa

Komentavimo iki data 2025-07-30

Buitiniai elektriniai prietaisai. Skaitmeninės eksploatacinių charakteristikų matavimo sistemos savybių specifikacija

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prEN IEC 63223-1:2025 Viešoji apklausa

Komentavimo iki data 2025-07-30

Energijos sistemų tinklų turto valdymas. Apžvalga, principai ir terminija

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prEN IEC 63378-6:2025 Viešoji apklausa

Komentavimo iki data 2025-07-30

Puslaidininkinių įtaisų korpusų šiluminių charakteristikų standartizavimas. 6 dalis. Šiluminės varžos ir talpos modelis pereinamųjų vyksmų temperatūrai prognuozuoti sandūros ir matavimo taškuose

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prEN IEC 61757-8-1:2025 Viešoji apklausa

Komentavimo iki data 2025-07-30

Skaiduliniai optiniai jutikliai. 8-1 dalis. Slėgio matavimas. Slėgio jutikliai su skaidulinėmis Brego gardelėmis

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