Standartų projektų sąrašas

prEN ISO 19870-1 Viešoji apklausa

Komentavimo iki data 2025-07-15

Vandenilio technologijos. Šiltnamio efektą sukeliančių dujų kiekio, susijusio su vandenilio tiekimo grandine, nustatymo metodika. 1 dalis. Išmetamas kiekis, susijęs su vandenilio gamyba visame gamybos etape (ISO/DIS 19870-1:2025)

ISO 14044 requires the goal and scope of an LCA to be clearly defined and be consistent with the intended application. Due to the iterative nature of LCA, it is possible that the LCA scope needs to be refined during the study. This document specifies methodologies that can be applied to determine the carbon footprint of a product (CFP) or partial CFP of a hydrogen product in line with ISO 14067. The goals and scopes of the methodologies correspond to either approach a) or b), given below, that ISO 14040:2006, A.2 gives as two possible approaches to LCA. a) An approach that assigns elementary flows and potential environmental impacts to a specific product system, typically as an account of the history of the product. b) An approach that studies the environmental consequences of possible (future) changes between alternative product systems. Approaches a) and b) have become known as attributional and consequential, respectively, with complementary information accessible in the ILCD handbook.[1] There are numerous pathways to produce hydrogen from various primary energy sources. This document describes the requirements and evaluation methods applied to several hydrogen production pathways of interest: electrolysis, steam methane reforming (with carbon capture and storage), co-production and coal gasification (with carbon capture and storage), auto-thermal reforming (with carbon capture and storage), hydrogen as a co-product in industrial applications and hydrogen from biomass waste as feedstock. This document also considers the GHG emissions due to the conditioning or conversion of hydrogen into different physical forms and chemical carriers: — hydrogen liquefaction; — production, transport and cracking of ammonia as a hydrogen carrier; — hydrogenation, transport and dehydrogenation of liquid organic hydrogen carriers (LOHCs). This document considers the GHG emissions due to hydrogen and/or hydrogen carriers’ transport up to the consumption gate. It is possible that future revisions of this document will consider additional hydrogen production, conditioning, conversion and transport methods. This document applies to and includes every delivery along the supply chain up to the final delivery to the consumption gate (see Figure 2 in the Introduction). This document also provides additional information related to evaluation principles, system boundaries and expected reported metrics in the form of Annexes A to K, that are accessible via the online ISO portal (https://standards.iso.org/iso/ts/19870/ed-1/en).

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prEN ISO 25178-71 Viešoji apklausa

Komentavimo iki data 2025-08-07

Geometrinės gaminio specifikacijos (GPS). Plotinė paviršiaus tekstūra. 71 dalis. Programinės įrangos etalonai (ISO/DIS 25178‑71:2025)

ISO 25178-71:2017 defines Type S1 and Type S2 software measurement standards (etalons) for verifying the software of measuring instruments. It also defines the file format of Type S1 software measurement standards for the calibration of instruments for the measurement of surface texture by the areal method as defined in the areal surface texture chain of standards, chain link G. NOTE Throughout ISO 25178-71:2017, the term "softgauge" is used as a substitute for "software measurement standard Type S1".

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prEN 688 Viešoji apklausa

Komentavimo iki data 2025-07-10

Tampriosios grindų dangos. Techniniai kamštienos linoleumo reikalavimai

This document specifies the characteristics of corklinoleum, supplied in roll form. To encourage the consumer to make an informed choice, the standard includes a classification system based on intensity of use, which shows where resilient floor coverings should give satisfactory service (see EN 685). It also includes requirements for marking. The term 'linoleum' is frequently incorrectly applied to a range of floor coverings, often to those based on polyvinyl chloride or rubber. Such materials are excluded from this document.

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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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FprEN IEC 60601-2-57:2023/prAA:2025 Viešoji apklausa

Komentavimo iki data 2025-08-08

Elektrinė medicinos įranga. 2-57 dalis. Ypatingieji būtinosios saugos ir esminių eksploatacinių charakteristikų reikalavimai, keliami terapijos, diagnostikos, stebėjimo ir kosmetiniais ar estetiniais tikslais naudojamai įrangai su nelazeriniais šviesos šaltiniais

The amendment to EN IEC 60601-2-57 contains the Annexes ZA (Normative references to international publications with their corresponding European publications) and ZZ (Relationship between this European standard and the General Safety and Performance Requirements of Regulation (EU) 2017/745 aimed to be covered). These two Annexes are necessary for the harmonization of the standard to the Regulation (EU) 2017/745.

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prEN IEC 63522-46:2025 Viešoji apklausa

Komentavimo iki data 2025-08-13

Elektrinės relės. Bandymai ir matavimai. 46 dalis. Bandymas impulsine įtampa

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prEN ISO 20427 Viešoji apklausa

Komentavimo iki data 2025-07-10

Pigmentai ir užpildai. Dispergavimo procedūra sedimentacija pagrįstam skendinčių pigmentų ar užpildų dalelių dydžio nustatymui taikant sedimentacijos skystyje metodus (ISO/DIS 20427:2025)

This document specifies sample preparation methods to determine the size distribution of separate particles of a single pigment or extender, which is dispersed in a liquid by application of a standardized dispersion procedure, using an ultrasonic device, shaker device or wet jet mill. The sample preparation methods described are optimized for measurements carried out with a particle sizing technique based on sedimentation. This technique relies on particle migration due to gravitation or centrifugal forces and requires a density contrast between the particles and the liquid phase.

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prEN IEC 63287-4:2025 Viešoji apklausa

Komentavimo iki data 2025-08-06

Puslaidininkiniai įtaisai. Patikimumo įvertinimo planų gairės. 4 dalis. Ankstyvo gedimo vertinimas

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prEN ISO 32543-1 Viešoji apklausa

Komentavimo iki data 2025-08-07

Neardomieji bandymai. Neardomuosiuose bandymuose naudojamų pramoninių rentgeno sistemų fokusavimo dėmių charakteristikos. 2 dalis. Radiografinis beobjektyvės kameros metodas (ISO 32543-1:2024)

This document specifies a method for the measurement of effective focal spot dimensions above 0,1 mm of X-ray systems up to and including 1 000 kV X-ray voltage by means of the pinhole camera method with digital evaluation. The tube voltage applied for this measurement is restricted to 200 kV for visual film evaluation and can be selected higher than 200 kV if digital detectors are used. The imaging quality and the resolution of X-ray images depend highly on the characteristics of the effective focal spot, in particular the size and the two-dimensional intensity distribution as seen from the detector plane. Compared to the other methods specified in the EN 12543 series and the ISO 32543 series, this method allows to obtain an image of the focal spot and to see the state of it (e.g. cratering of the anode). This test method provides instructions for determining the effective size (dimensions) of standard (macro focal spots) and mini focal spots of industrial X-ray tubes. This determination is based on the measurement of an image of a focal spot that has been radiographically recorded with a “pinhole” technique and evaluated with a digital method. For the characterization of commercial X-ray tube types (i.e. for advertising or trade), the specific FS (focal spot) values of Annex A can be used.

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PrLST 1524 Archyvuotas

Komentavimo iki data 2025-07-02

Kviečiai. Supirkimo ir tiekimo reikalavimai

Šiame nacionaliniame standarte pateikiami superkamų ir tiekiamų žieminių bei vasarinių minkštųjų kviečių (Triticum aestivum L.) grūdų (toliau – kviečiai), skirtų maisto produktų ir pašarų gamybai, kokybės reikalavimai ir baziniai kokybės rodikliai, pagal kuriuos pirkėjas remdamasis grūdų pirkimo-pardavimo sutartyse nustatytais reikalavimais ir sąlygomis, atsiskaito su tiekėju už superkamus ir tiekiamus kviečius.

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prEN IEC 62146-1:2025 Viešoji apklausa

Komentavimo iki data 2025-07-09

Aukštosios įtampos kintamosios srovės jungtuvų kondensatoriai. 1 dalis. Bendrosios paskirties ir skirstomieji kondensatoriai

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prEN IEC 61290-1-2:2025 Viešoji apklausa

Komentavimo iki data 2025-08-06

Optiniai stiprintuvai. Bandymo metodai. 1-2 dalis. Galios ir galios stiprinimo parametrai. Elektrinio spektro analizatoriaus metodas

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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 18203 Archyvuotas

Komentavimo iki data 2025-07-06

Plienas. Paviršinio grūdinimo sluoksnių storio nustatymas (ISO/DIS 18203:2025)

ISO 18203:2016 specifies a method of measuring the case hardening depth, surface hardening depth, nitriding hardness depth and total thickness of surface hardening depth obtained, e.g. thermal (flame and induction hardening, electron beam hardening, laser beam hardening, etc.) or thermochemical (carbonitriding, carburizing and hardening, hardening and nitriding, etc.) treatment.

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prEN IEC 62828-3:2025 Viešoji apklausa

Komentavimo iki data 2025-07-11

Pamatinės sąlygos ir procedūros pramoniniams ir procesų valdymo keitikliams bandyti. 3 dalis. Specialiosios procedūros, skirtos temperatūros keitikliams

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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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EN 1594:2024/prA1 Viešoji apklausa

Komentavimo iki data 2025-08-12

Dujų infrastruktūra. Didesnio kaip 16 bar didžiausiojo eksploatacinio slėgio vamzdynai. Funkciniai reikalavimai

This document describes the functional requirements for pipelines for maximum operating pressure over 16 bar. This document also describes the mechanical requirements for pipework in stations with a maximum operating pressure greater than 16 bar. NOTE 1 Welding requirements are described in EN 12732. Functional requirements for stations are given in EN 1776, EN 1918-5, EN 12186, and EN 12583. This document is applicable for transporting gas via onshore high-pressure steel pipeline infrastructures, where the following applies: - onshore: - from the point where the pipeline first crosses what is normally accepted as battery limit between onshore and offshore, and that is not located within commercial or industrial premises as an integral part of the industrial process on these premises except for any pipelines and facilities supplying such premises; - pipeline system with a starting point onshore, also when parts of the pipeline system on the mainland subsequently cross fjords, lakes, etc. - high pressure: gas with a maximum operating pressure over 16 bar and a design temperature between −40 °C and 120 °C. - steel pipeline infrastructure: infrastructure consisting of pipeline components, such as pipes, valves, couplings and other equipment, restricted to components made of unalloyed or low alloyed carbon steel and joined by welds, flanges or mechanical couplings. - gas: non-corrosive natural gas, biomethane gas, hydrogen gas and mixtures of these gases where technical evaluation has ensured that operating conditions or constituents or properties of the gas do not affect the safe operation of the pipeline. Gas infrastructures covered by this document begin after the gas producer's metering station. NOTE 2 The functional demarcation of the pipeline system is usually directly after an isolating valve of the installation, but can differ in particular situations. The functional demarcation of the pipeline system is usually located on an isolating valve of the installation, but can differ in particular situations. A schematic representation of pipelines for gas infrastructure is given in Figure 1. This document can also be applied to the repurposing of existing pipelines. [Figure 1 - Schematic representation of pipelines for gas supply over 16 bar] This document specifies common basic principles for gas infrastructure. Users of this standard are expected to be aware that more detailed national standards and/or code of practice can exist in the CEN member countries. This document is intended to be applied in association with these national standards and/or codes of practice setting out the above-mentioned basic principles. In the event of conflicts in terms of more restrictive requirements in national legislation/regulation with the requirements of this standard, the national legislation/regulation takes precedence as illustrated in CEN/TR 13737. CEN/TR 13737 gives: - clarification of all legislations/regulations applicable in a member state; - if appropriate, more restrictive national requirements; - a national contact point for the latest information.

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