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prEN ISO 7097-2 Viešoji apklausa

Komentavimo iki data 2026-06-23

Branduolinio kuro technologija. Urano nustatymas tirpaluose, urano heksafluoride ir kietosiose medžiagose. 2 dalis. Redukavimo geležimi(II) ir oksidavimo ceriu(IV) titrimetrinės analizės metodas (ISO 7097-2:2022)

This document describes an analytical method for the determination of uranium in samples from pure product materials such as U metal, UO2, UO3, U3O8, uranyl nitrate hexahydrate and uranium hexafluoride from the nuclear fuel cycle. This procedure is sufficiently accurate and precise to be used for nuclear materials accountability. This method can be used directly for the analysis of most uranium and uranium oxide nuclear reactor fuels, either irradiated or un-irradiated, and of uranium nitrate product solutions. Fission products equivalent to up to 10 % burn-up of heavy atoms do not interfere, and other elements which could cause interference are not normally present in sufficient quantity to affect the result significantly. The method recommends that an aliquot of sample is weighed and that a mass titration is used, in order to obtain improved precision and accuracy. This does not preclude the use of alternative techniques which could give equivalent performance. The use of automatic device(s) in the performance of some critical steps of the method has some advantages, mainly in the case of routine analysis.

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prEN ISO 22125-1 Viešoji apklausa

Komentavimo iki data 2026-05-25

Vandens kokybė. Technecis 99. 1 dalis. Tyrimo metodas skaičiuojant blyksnius skystyje (ISO/DIS 22125-1:2026)

This document specifies a method for the measurement of 99Tc in all types of waters by liquid scintillation counting (LSC). The method is applicable to test samples of supply/drinking water, rainwater, surface and ground water, as well as cooling water, industrial water, domestic, and industrial wastewater after proper sampling and handling, and test sample preparation. A filtration of the test sample is necessary. The detection limit depends on the sample volume and the instrument used. The method described in this document, using currently available LSC instruments, has a detection limit of approximately 5 Bq·kg−1 to 20 Bq·kg−1, which is lower than the WHO criteria for safe consumption of drinking water (100 Bq l−1)[3]. These values can be achieved with a counting time of 30 min for a sample volume varying between 14 ml to 40 ml. The method presented in this document is not intended for the determination of ultra-trace amount of 99Tc. The activity concentration values in this document are expressed by sample mass unit instead of sample volume unit as it is usually the case in similar standards. The reason is that 99Tc is measured in various matrix types such as fresh water or sea water, which have significant differences in density. The activity concentration values can be easily converted to sample volume unit by measuring the sample volume. However, it increases the uncertainty on the activity concentration result. The method described in this document is applicable in the event of an emergency situation, but not if 99mTc is present at quantities that could cause interference and not if 99mTc is used as a recovery tracer. The analysis of Tc adsorbed to suspended matter is not covered by this method. It is the user's responsibility to ensure the validity of this test method for the water samples tested.

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prEN IEC 62885-11:2026 Viešoji apklausa

Komentavimo iki data 2026-06-03

Paviršių valymo prietaisai. 11 dalis. Buitiniai ar panašios paskirties drėgnojo valymo robotai. Eksploatacinių charakteristikų matavimo metodai

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prEN ISO 287 Viešoji apklausa

Komentavimo iki data 2026-06-18

Popierius ir kartonas. Partijos drėgmės kiekio nustatymas. Džiovinimo krosnyje metodas (ISO 287:2026)

ISO 287:2017 specifies an oven-drying method for the determination of the moisture content of a lot of paper and board. The procedure in Clause 8, describing how the test pieces are drawn from the lot, is performed at the time of sampling. ISO 287:2017 is applicable to every type of lot of paper and board, including corrugated board and solid board, provided that the paper or board does not contain any substances, other than water, that are volatile at the temperature specified in this document. NOTE For determination of the dry matter content of a sample of paper or board, e.g. for calculation of the dry mass of the sample, ISO 638[1] can be used.

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EN 62841-4-2:2019/prAB:2026 Viešoji apklausa

Komentavimo iki data 2026-07-01

Elektriniai varikliniai rankiniai įrankiai, kilnojamieji įrankiai ir vejų bei sodų mašinos. Sauga. 4-2 dalis. Ypatingieji reikalavimai, keliami gyvatvorių genėtuvams

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EN IEC 60688:2024/prAA:2026 Viešoji apklausa

Komentavimo iki data 2026-07-10

Elektriniai matavimo keitliai elektriniams kintamosios ir nuolatinės srovės dydžiams keisti į analoginius arba skaitmeninius signalus

This document applies to transducers (TRD) with electrical inputs and outputs for making measurements of AC or DC electrical quantities. The output signal can be in the form of an analogue or digital signal. This document applies to measuring transducers used for converting electrical quantities such as: – current, – voltage, – active power, – reactive power, – power factor, – phase angle, – frequency, – harmonics or total harmonic distortion, – apparent power, and – DC power to an output signal. NOTE The above electrical quantities include AC and/or DC components.

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EN IEC 60539-1:2023/prA1:2026 Archyvuotas

Komentavimo iki data 2026-05-08

Tiesiogiai kaitinami neigiamojo temperatūrinio varžos koeficiento termistoriai. 1 dalis. Bendroji specifikacija

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prEN IEC 60876-1:2026 Archyvuotas

Komentavimo iki data 2026-05-15

Skaiduliniai optiniai sujungimo įtaisai ir pasyvieji komponentai. Erdviniai skaiduliniai optiniai perjungikliai. 1 dalis. Bendrinė specifikacija

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prEN 50388-1:2026 Viešoji apklausa

Komentavimo iki data 2026-06-05

Geležinkelio taikmenys. Stacionarieji įrenginiai ir riedmenys. Elektrinės traukos maitinimo šaltinių ir riedmenų veikimo koordinavimo, užtikrinančio jų funkcinį suderinamumą, techniniai kriterijai. 1 dalis. Bendrieji dalykai

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

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prEN IEC 60335-2-25:2026 Viešoji apklausa

Komentavimo iki data 2026-06-17

Buitiniai ir panašios paskirties elektriniai prietaisai. Sauga. 2-25 dalis. Ypatingieji reikalavimai, keliami mikrobangų krosnelėms, įskaitant kombinuotąsias mikrobangų krosneles

This European Standard deals with the safety of microwave ovens for household and similar use, their rated voltage being not more than 250 V.

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EN 1991-1-7:2025/prA1 Viešoji apklausa

Komentavimo iki data 2026-07-02

Eurokodas 1. Poveikiai konstrukcijoms. 1-7 dalis. Ypatingieji poveikiai

(1) EN 1991-1-7 provides actions and rules for safeguarding buildings and civil engineering works against identifiable accidental actions. NOTE 1 Identifiable accidental actions include impact from vehicles and internal explosions. NOTE 2 Rules on impact from vehicles travelling on a bridge deck are given in EN 1991-2. (2) EN 1991-1-7 also covers: actions and rules for tying systems and key members; information on risk assessment; dynamic design for impact; actions for internal explosions; actions from debris. (3) Actions from ship operations such as berthing and mooring are outside the scope of this document. (4) Actions due to high explosives that detonate are outside the scope of this document.

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prEN IEC 63409-6:2026 Viešoji apklausa

Komentavimo iki data 2026-07-08

Fotovoltinių elektros energijos gamybos sistemų prijungimas prie tinklo. Galios keitimo įrangos bandymas. 6 dalis. Galios valdymo funkcijos ir tinklo palaikymas

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prEN ISO 5183-1 Naujas

Komentavimo iki data 2026-05-19

Kontaktinio suvirinimo įrenginiai. Elektrodo adapteriai, išorinis kūgis 1:10. 1 dalis. Kūginis tvirtinimas, kūgiškumas 1:10 (ISO/FDIS 5183-1:2026)

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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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prEN ISO 4254-18 Viešoji apklausa

Komentavimo iki data 2026-06-08

Žemės ūkio mašinos. Sauga. 18 dalis. Rinktuvinės ir pripildomos pašarų priekabos (ISO/DIS 4254-18:2026)

This document, intended to be used together with ISO 4254-1, specifies the safety requirements and their verification for the design and construction of — trailed forage loader wagons, — trailed forage cutter-loader wagons, — trailed forage transport wagons, — silage and forage body intended to be affixed to a carrier vehicle, — trailers with a load push/push-off device, slats or alternating moving floor which is intended for the use by only one person (operator). In addition, it specifies the type of information on safe working practices including residual risks to be provided by the manufacturer. This document is not applicable to: — self-propelled forage loader wagons, self-propelled forage cutter loader wagons and self-propelled forage transport wagons, — trailers with a tipping body, balanced or semi-mounted, used in agriculture.

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prEN ISO 16484-5 Viešoji apklausa

Komentavimo iki data 2026-06-09

Pastatų automatizavimo ir valdymo sistemos. 5 dalis. Duomenų perdavimo protokolas (ISO/DIS 16484-5:2026)

The purpose of this document is to define data communication services and protocols for computer equipment used for monitoring and control of HVAC&R and other building systems and to define, in addition, an abstract, object-oriented representation of information communicated between such equipment, thereby facilitating the application and use of digital control technology in buildings.

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prEN 12897-1 Viešoji apklausa

Komentavimo iki data 2026-07-07

Vandens tiekimas. Netiesiogiai kaitinami nevėdinami (uždarieji) vandens šildytuvai. 1 dalis. Bendroji specifikacija ir įprastiniai bandymo metodai

This document specifies the general specifications, constructional requirements and common test methods for indirectly heated, unvented (closed) hot water storage tanks of up to 2 000 l volume suitable for connection to a water supply at a pressure between 0,05 MPa and 1,0 MPa (0,5 bar and 10 bar), and fitted with control and safety devices designed to prevent the temperature of the stored drinking water from reaching 95 °C. Whilst storage water heaters intended primarily for direct heating are not covered by this document, it includes the possible provision of backup immersion heaters.

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prEN 18329 Viešoji apklausa

Komentavimo iki data 2026-07-07

CO2 srautų matavimas. Ėminių ėmimas iš transportavimo vamzdynais sistemų ir jų analizė

This document specifies requirements and recommendations for measuring the composition of CO2 streams during post capture pipeline transportation. The primary objective of this document is to establish standardized technical requirements and recommendations necessary for implementing regulations, commercial contracts, inventory ownership and fiscal transactions within the framework of Carbon Capture and Storage (CCS). This document includes measurements up to the storage injection points but does not cover Measurement, Monitoring, and Verification (MMV) once the CO2 has entered the geological storage complex. The differentiation between biogenic and non-biogenic CO2 in a CO2 stream is recognized as highly relevant for accounting purposes. However, the measurement methodologies for the biogenic CO2 fraction fall outside the scope of this document, which covers post-capture pipeline transportation. This document is not intended to differentiate between biogenic CO2 and CO2 produced from non-biogenic sources.

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prEN 10250-3 Archyvuotas

Komentavimo iki data 2026-05-14

Laisvai štampuoti plieno kaltiniai bendrosioms techninėms reikmėms. 3 dalis. Specialieji legiruotieji plienai

This document specifies the technical delivery requirements for open die forgings, forged bars and products pre-forged and finished in ring rolling mills, manufactured from alloy special steel and supplied in the quenched and tempered condition. The majority of steels listed in this document are identical to steels specified in EN ISO 683-1 and EN ISO 683-2 and more extensive information on hardenability and technological properties is given in these standards. General information on technical delivery conditions is given in EN 10021.

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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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prEN 16510-2-8 Viešoji apklausa

Komentavimo iki data 2026-06-09

Gyvenamosioms patalpoms skirti kietojo kuro prietaisai. 2-8 dalis. Patalpų šildymo krosnys, kūrenamos gravimetriniu būdu tiekiamomis granulėmis

This document is applicable to gravimetrically pellet-fed room heaters, inset appliances and cookers. The intended use of the appliances is space heating in residential buildings and can be cooking. These appliances burn wood pellets only as specified in EN ISO 17225. This document is not applicable to appliances which are in addition intended for non-gravimetrically fuelling with wood logs (e.g. from the front on top of the burner pot or even if a cover of the burner pot is provided and intended to be used). This document is not applicable to appliances with fan assisted combustion air, appliances that are mechanically or to appliances fitted with a boiler (integral part of the appliance containing water to be heated up) for the supply of hot water for central heating systems. This document is not applicable to appliances that can operate with fire door open. This document specifies procedures for assessment and verification of constancy of performance (AVCP) of characteristics of solid fuel burning room heaters.

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prEN IEC 60730-2-22:2026 Viešoji apklausa

Komentavimo iki data 2026-06-10

Automatiniai elektriniai valdymo įtaisai. 2-22 dalis. Ypatingieji reikalavimai, keliami variklių šiluminės apsaugos įtaisams

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EN 60870-5-101:2003/prA2:2026 Viešoji apklausa

Komentavimo iki data 2026-07-01

Nuotolinio valdymo įrenginiai ir sistemos. 5-101 dalis. Perdavimo protokolai. Pagrindinių nuotolinio valdymo uždavinių lydimasis standartas

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prEN 15430-3 Viešoji apklausa

Komentavimo iki data 2026-07-05

Kelių priežiūros žiemą ir kelio zonų priežiūros įranga. Duomenų surinkimas ir perdavimas. 3 dalis. Duomenų perdavimo tarp taikomųjų programų serverių protokolas

The function of EN 15430 is to combine any vehicle equipment with different board computers to any client application server. This document specifies the interface and protocol needed between the information supplier server and the client application server (flow 3 as illustrated in Figure 1) to allow distribution of data without any restrictions to the technology used to gather the data like manufacturer specific protocols, WLANS systems, memory cards, etc.

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EN 1396:2023/prA1 Viešoji apklausa

Komentavimo iki data 2026-05-24

Aliuminis ir aliuminio lydiniai. Bendrosios paskirties dengtųjų lakštų ir juostų ritiniai. Specifikacijos

This document specifies the particular requirements for wrought aluminium and wrought aluminium alloys in the form of coil coated sheet and strip for general applications. This product is generally supplied in thicknesses up to 3,0 mm. It is applicable to cold-rolled aluminium and aluminium alloy strip coated by the coil coating process both with liquid as well as with powder paints, either in the final width or slit afterwards, and to sheet obtained from such strip. It does not apply to coil coated sheet and strip used for special applications such as cans, closures and lids which are dealt with in separate EN 541.

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