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Total records found: 240
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prEN ISO 4026 Public enquiry
Comment end date 2025-06-29
Fasteners - Hexagon socket set screws with flat point (ISO/DIS 4026:2025)

ISO 4026:2003 specifies the characteristics of hexagon socket set screws with flat point and threads from M1,6 up to and including M24 and of product grade A.

prEN ISO 11987 Public enquiry
Comment end date 2025-07-06
Ophthalmic optics - Contact lenses - Determination of shelf-life (ISO/DIS 11987:2025)

ISO 11987:2012 specifies test procedures for determining the stability of contact lenses once placed in their final packaging during storage and distribution.

prEN 18189 Public enquiry
Comment end date 2025-07-22
Rooflights and roof hatches - Environmental Product Declarations - Complementary product category rules (cPCR) to EN 15804

This European Standard specifies complementary product category rules (c-PCR) for Type III environmental declarations of rooflights and roof hatches to be used on upstands in flat and slightly inclined roofs. These product category rules are complementary to the core rules for construction products specified in EN 15804:2012+A2:2019 + AC:2021. This European Standard applies to rooflights and roof hatches with upstands as well as rooflights and roof hatches supplied without an upstand, intended for use on upstands. The light transmitting components of rooflights may be made of glass and / or plastic materials. For other components of the products including the upstands no limitation for the materials used, are specified. This European standard applies to fully factory assembled individual rooflights and roof hatches which are supplied as one unit as well as to continuous rooflights that are supplied in more than one prefabricated sections to be assembled onsite. This European Standard does not apply to: • doors, gates and barriers • windows and roof windows • curtain walling

prEN 1918-5 Public enquiry
Comment end date 2025-08-05
Gas infrastructure - Underground gas storage - Part 5: Functional recommendations for surface facilities

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.

prEN ISO 13694 rev Public enquiry
Comment end date 2025-06-24
Optics and photonics - Lasers and laser-related equipment - Test methods for laser beam irradiance (fluence) distribution (ISO/DIS 13694:2025)

This document specifies methods by which the measurement of power (energy) density distribution is made and defines parameters for the characterization of the spatial properties of laser power (energy)density distribution functions at a given plane. The methods given in this document are intended to be used for the testing and characterization of both continuous wave (cw) and pulsed laser beams used in optics and optical instruments. This document provides definitions of terms and symbols to be used in referring to power density distribution, as well as requirements for its measurement. For pulsed lasers, the distribution of time-integrated power density (i.e. energy density) is the quantity most often measured.

prEN ISO 18490 Public enquiry
Comment end date 2025-07-03
Non-destructive testing - Evaluation of vision acuity of NDT personnel (ISO/DIS 18490:2025)

ISO 18490:2015 specifies the form of the optotype, the quality requirements for the chart, the test procedure, and the acceptance level for near vision acuity of NDT personnel. It also addresses the qualification requirements for personnel permitted to carry out the test. ISO 18490:2015 only addresses near vision acuity under defined conditions similar to those encountered during routine NDT inspection. It does not address an individual's overall visual acuity and users are advised to consider the need for a general eye examination by specialist medical personnel to ensure general vision acuity is appropriate for job function. ISO 18490:2015 does not address colour vision requirements.

prEN 18191 Public enquiry
Comment end date 2025-08-03
Industrial valves - Additional requirements for metallic valves for hydrogen application

This document applies to industrial metallic valves for hydrogen use. It contains recommendations and additional requirements applicable to material selection, design, manufacture, and final assessment. This document addresses the following four services/damage mechanisms, which might exist in combinations: - low temperature applications; - hydrogen environmental embrittlement (HEE) or hydrogen-induced cracking (HIC); - high temperature hydrogen attack (HTHA); - hydrogen service with cyclic loads (fatigue). The document considers the difference between gaseous hydrogen (GH2) and liquid hydrogen (LH2), where necessary. The additional provisions set out in this document do not cover corrosion such as electro-chemical corrosion of metals under participation of hydrogen (e.g. sour gas). This document is based on the requirements contained in the standards specified below: - applications with a maximum allowable pressure PS greater than 0,5 bar in accordance with the European legislation for pressure equipment, the applicable provisions of EN 16668 apply; - additional requirements for valves in chemical and petrochemical applications are specified in EN 12569; - additional requirements for valves in gas distribution systems are specified in EN 13774; - additional requirements for valves in gas transportation systems are specified in EN 14141.

prEN ISO 13971 Public enquiry
Comment end date 2025-08-05
Refrigeration systems and heat pumps - Flexible pipe elements, vibration isolators, expansion joints and non-metallic tubes - Requirements and classification (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.

prEN ISO 3964-1 Public enquiry
Comment end date 2025-07-01
Dentistry - Coupling dimensions for handpiece connectors - Part 1: Mechanical properties (ISO/DIS 3964-1:2025)

This International Standard specifies the coupling between handpieces and motors connected to dental units. This International Standard specifies the nominal dimensions, tolerances and the extraction force of coupling systems for use between handpiece and motor which supply the handpiece with water, air and light, and rotation energy.

prEN IEC 63086-2-2:2025 Public enquiry
Comment end date 2025-07-02
Household and similar electrical air cleaning appliances - Method for measuring performance - Part 2-2: Particular requirements for determination of gas-phase pollutant reduction
prEN IEC 63223-1:2025 Public enquiry
Comment end date 2025-07-30
Management of network assets in power systems - Overview, principles and terminology
prEN IEC 63418:2025 Public enquiry
Comment end date 2025-08-06
Fixed accessories intended for household and similar purposes that supply power through an interface
prEN IEC 63541:2025 Public enquiry
Comment end date 2025-06-25
Lithium tantalate and lithium niobate crystals for surface acoustic wave (SAW) device applications - Specifications and measuring methods
prEN ISO 14505-2 Public enquiry
Comment end date 2025-07-08
Ergonomics of the thermal environment - Evaluation of thermal environments in vehicles - Part 2: Determination of equivalent temperature (ISO/DIS 14505-2:2025)

ISO 14505-2:2006 provides guidelines for the assessment of the thermal conditions inside a vehicle compartment. It can also be applied to other confined spaces with asymmetric climatic conditions. It is primarily intended for assessment of thermal conditions, when deviations from thermal neutrality are relatively small. Appropriate methodology as given in ISO 14505-2:2006 can be chosen for inclusion in specific performance standards for testing of HVAC-systems for vehicles and similar confined spaces.

prEN IEC 63378-6:2025 Public enquiry
Comment end date 2025-07-30
Thermal standardization on semiconductor packages - Part 6: Thermal resistance and capacitance model for transient temperature prediction at junction and measurement points
prEN ISO 6980-3 Public enquiry
Comment end date 2025-08-05
Nuclear energy - Reference beta-particle radiation - Part 3: Calibration of area and personal dosemeters and the determination of their response as a function of beta radiation energy and angle of incidence (ISO 6980-3:2023)

This document describes procedures for calibrating and determining the response of dosemeters and dose-rate meters in terms of the operational quantities for radiation protection purposes defined by the International Commission on Radiation Units and Measurements (ICRU). However, as noted in ICRU 56, the ambient dose equivalent, H*(10), used for area monitoring, and the personal dose equivalent, Hp(10), as used for individual monitoring, of strongly penetrating radiation, are not appropriate quantities for any beta radiation, even that which penetrates 10 mm of tissue (Emax > 2 MeV). This document is a guide for those who calibrate protection-level dosemeters and dose-rate meters with beta-reference radiation and determine their response as a function of beta-particle energy and angle of incidence. Such measurements can represent part of a type test during the course of which the effect of other influence quantities on the response is examined. This document does not cover the in-situ calibration of fixed, installed area dosemeters. The term “dosemeter” is used as a generic term denoting any dose or dose-rate meter for individual or area monitoring. In addition to the description of calibration procedures, this document includes recommendations for appropriate phantoms and the way to determine appropriate conversion coefficients. Guidance is provided on the statement of measurement uncertainties and the preparation of calibration records and certificates.

prEN ISO 8980-4 Public enquiry
Comment end date 2025-06-24
Ophthalmic optics - Uncut finished spectacle lenses - Part 4: Specifications and test methods for anti-reflective and hydrophobic coatings (ISO/DIS 8980-4:2025)

ISO 8980-4:2006 specifies optical and non optical requirements, including durability, and test methods for anti-reflective coatings on spectacle lenses. ISO 8980-4:2006 does not deal with the following topics: transmittance and absorbtance; the colour of the reflected light.

prEN ISO 11670 Public enquiry
Comment end date 2025-07-15
Lasers and laser-related equipment - Test methods for laser beam parameters - Beam spatial stability (ISO/DIS 11670:2025)
ISO/DIS 8092-6 Public enquiry
Comment end date 2025-08-04
Road vehicles — Connections for on-board electrical wiring harnesses — Part 6: In-vehicle Ethernet, general performance requirements and interface definitions
prEN ISO 6980-1 Public enquiry
Comment end date 2025-08-05
Nuclear energy - Reference beta-particle radiation - Part 1: Methods of production (ISO 6980-1:2023)

This document specifies the requirements for reference beta radiation fields produced by radioactive sources to be used for the calibration of personal and area dosemeters and dose-rate meters to be used for the determination of the quantities Hp(0,07), H'(0,07;Ω), Hp(3) and H'(3;Ω), and for the determination of their response as a function of beta particle energy and angle of incidence. The basic quantity in beta dosimetry is the absorbed-dose rate in a tissue-equivalent slab phantom. This document gives the characteristics of radionuclides that have been used to produce reference beta radiation fields, gives examples of suitable source constructions and describes methods for the measurement of the residual maximum beta particle energy and the dose equivalent rate at a depth of 0,07 mm in the International Commission on Radiation Units and Measurements (ICRU) sphere. The energy range involved lies between 0,22 MeV and 3,6 MeV maximum beta energy corresponding to 0,07 MeV to 1,2 MeV mean beta energy and the dose equivalent rates are in the range from about 10 µSv·h-1 to at least 10 Sv·h-1.. In addition, for some sources, variations of the dose equivalent rate as a function of the angle of incidence are given. However, as noted in ICRU 56[5], the ambient dose equivalent, H*(10), used for area monitoring, and the personal dose equivalent, Hp(10), as used for individual monitoring, of strongly penetrating radiation, are not appropriate quantities for any beta radiation, even that which penetrates 10 mm of tissue (Emax > 2 MeV). This document is applicable to two series of reference beta radiation fields, from which the radiation necessary for determining the characteristics (calibration and energy and angular dependence of response) of an instrument can be selected. Series 1 reference radiation fields are produced by radioactive sources used with beam-flattening filters designed to give uniform dose equivalent rates over a large area at a specified distance. The proposed sources of 106Ru/106Rh, 90Sr/90Y, 85Kr, 204Tl and 147Pm produce maximum dose equivalent rates of approximately 200 mSv·h–1. Series 2 reference radiation fields are produced without the use of beam-flattening filters, which allows large area planar sources and a range of source-to-calibration plane distances to be used. Close to the sources, only relatively small areas of uniform dose rate are produced, but this series has the advantage of extending the energy and dose rate ranges beyond those of series 1. The series also include radiation fields using polymethylmethacrylate (PMMA) absorbers to reduce the maximum beta particle energy. The radionuclides used are those of series 1; these sources produce dose equivalent rates of up to 10 Sv·h–1.

prEN IEC 63041-1:2025 Public enquiry
Comment end date 2025-06-25
Piezoelectric sensors - Part 1: Generic specifications
prEN 688 Public enquiry
Comment end date 2025-07-10
Resilient floor coverings - Specification for corklinoleum

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.

prEN IEC 63497:2025 Public enquiry
Comment end date 2025-07-23
Shunt-connected active correction devices (ACD)
prEN ISO 16795 Public enquiry
Comment end date 2025-06-24
Nuclear energy - Determination of Gd2O3 content in pellets containing uranium oxide by X-ray fluorescence spectrometry (ISO 16795:2024)

This document specifies a method which covers the determination of Gd2O3 content in UO2 fuel pellets, by X-ray fluorescence spectrometry. Either wave dispersion X-ray fluorescence (WD-XRF) or energy dispersion X-ray fluorescence (ED-XRF) is applicable, however, this document states a method by using WD-XRF using Gd Lα-line. This method has been tested for mass fractions of from 2 % to 10 % Gd2O3.

prEN 17420 Public enquiry
Comment end date 2025-07-22
Railway applications - Vehicle front design for trams with respect to pedestrian safety

This document is applicable to tram vehicles and to tram-Train vehicles operating on tram and suburban networks in accordance with EN 17343. On-track-machines, infrastructure inspection vehicles and road-rail machines in accordance with EN 17343 and demountable machines/machinery are not in the scope of this document. This document describes passive safety measures to reduce the consequences of collisions with pedestrians. These measures provide the last means of protection when all other possibilities of preventing an accident have failed, i.e. — design provisions for the vehicle front to minimize the impact effect on a pedestrian when hit, — design provisions for the vehicle front for side (lateral) deflections in order to minimize the risk of being drawn under the vehicle on flat ground (embedded track), — design provisions for the vehicle body underframe to not aggravate injuries to a pedestrian/body lying on the ground, — provisions to prevent the pedestrian from being over-run by the leading wheels of the vehicle. This document focuses on the consequences of the primary and tertiary impact. The consequences of a secondary impact are out of the scope of this document. The following measures to actively improve safety are not in the scope of this document: — colour of front; — additional position lights; — additional cameras; — driver assistance systems; — additional acoustic warning devices, etc.; — view of the driver / mirrors; — consequences for pedestrian injuries due to secondary impact with infrastructure (side posts, concrete ground, poles, trees, etc.). The provisions of this document only apply to new vehicles.

Total records found: 240
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