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IEC 61254:2026 applies to men's electric shavers and their trimmers for household use.
This document deals with the methods for evaluating user experience and user satisfaction, in a subjective way, for men's electric shavers and their trimmers with a rated voltage not greater than 250 V.
This document does not specify safety or performance requirements.
This second edition cancels and replaces the first edition published in 1993. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) change in standard title and scope (Title and Clause 1);
b) addition of the definition of user experience and user satisfaction (3.5, 3.6);
c) modification of the list of evaluations (Clause 4);
d) introduction of evaluation of user satisfaction for a particular electric shaver (Clause 6);
e) removal of testing measurement in objective way, such as measuring methods for dimensions, operation time and gravimetric analysis of the difference in closeness of shave;
f) modification of questionnaires in Annex A.

IEC 62541-2:2026 describes the OPC Unified Architecture (OPC UA) security model. It describes the security threats of the physical, hardware, and software environments in which OPC UA is expected to run. It describes how OPC UA relies upon other standards for security. It provides definition of common security terms that are used in this and other parts of the IEC 62541 series. It gives an overview and concept of the security features that are specified in other parts of the series. It references services, mappings, and Profiles that are specified normatively in other parts of the 62541 series. It provides suggestions or best practice guidelines on implementing security. Any seeming ambiguity between this document and one of the other normative parts does not remove or reduce the requirement specified in the other normative part.
There are many different aspects of security that are addressed when developing applications. However, since OPC UA specifies a communication protocol, the focus is on securing the data exchanged between applications. This does not mean that an application developer can ignore the other aspects of security like protecting persistent data against tampering. It is important that the developers look into all aspects of security and decide how they can be addressed in the application. Common security features for industrial Controls are defined in IEC 62443-4-2 and OPC UA defined a relationship to them in Annex A.
This document is directed to readers who will develop OPC UA applications. It is also for end Users that wish to understand the various security features and functionality provided by OPC UA. It also offers some recommendations that can be applied when deploying systems. These recommendations are generic in nature since the details would depend on the actual implementation of the OPC UA applications and the choices made for the site security.
This edition cancels and replaces the third edition of IEC TR 62541-2, published in 2020.This edition constitutes a technical revision.

This document gives the sector specific requirements for the provision of private security services in the energy sector that are additional to the requirements of EN 17483-1.
This document specifies service requirements for quality in organization, processes, personnel and management of a security service provider and/or its independent branches and establishments under commercial law and trade as a provider with regard to security services in the energy sector.
This document defines quality criteria for the delivery of security services in the energy sector requested by public and private clients. This document is suitable for the selection, attribution, awarding and reviewing of the most suitable provider of security services in the energy sector.
NOTE 1 This document is the Part 4 of a series of standards on the provision of private security services for critical infrastructure. See Figure 2.
NOTE 2 It is important that the selection of a private security service provider always represents the best balance between quality and price. This document sets out the minimum requirements that providers are expected to comply with in order for this balance to be struck.
This document is not applicable to private security services in nuclear power plants.
A list of activities for Private Security Companies (PSC) in Critical Infrastructure Protection (CIP) in the energy sector comprises:
1. Perimeter Protection and Surveillance:
-  human - reception services, static guarding, patrols, dog-handler;
- technology – CCTV, unmanned vehicles (air/ground/sea); others;
- operation of a control/monitoring room;
- operation of an alarm monitoring centre;
- access Control and Management (turnstiles, barriers, authorization and badges).
2. Human and technology, e.g. use of screening and detection equipment for:
- vehicles;
- goods;
- visitors;
- staff;
- contractors;
3. Site security and mobile patrolling/ Static guarding activities required to secure a specific facility/area and mobile patrolling on-site and in buildings within the site;
4. Emergency response;
- alarm response;
- first aid response.

This document specifies requirements for the selection, installation, validation, and operation of continuous measuring devices CMDs as follows:
1)   Selection: defining the user requirements, the purposes of the required measurements, associated data quality requirements, and choice of CMDs.
2)   Installation: verifying a complete and correct delivery of the procured CMD and verifying a correctly functioning on-site installation, operation and communication of the CMD.
3)   Validation: verifying that the correctly installed CMD meets all of the original defined user requirements.
4)   Operation: implementing operating and maintenance procedures, processing of data and document traceability.
The overall objective is to obtain representative and reliable measurements when using CMDs to monitor water quality.
This document is applicable to CMDs for monitoring physical and chemical parameters in different types of water.

This document defines, for the purpose of ensuring compatibility between rolling stock and track circuits, the limits for interference current emissions from rolling stock. The measurement and evaluation methods for verifying conformity of rolling stock to these limits are presented in a dedicated annex.
The interference limits are only applicable to rolling stock that is intended to run on lines exclusively equipped with preferred track circuits listed in this document. The rolling stock test methodology (infrastructure conditions, test configurations, operational conditions, etc.) presented in this document is applicable to establish compatibility with any track circuits.
This document gives guidance on the derivation of interference current limits specified for rolling stock and defines measurement methods and evaluation criteria in a dedicated annex.
This document defines:
a)   a set of interference current limits for RST (Rolling Stock) applicable for each of the following types of traction system:
1)   DC (750 V, 1,5 kV and 3 kV);
2)   16,7 Hz AC;
3)   50 Hz AC;
b)   a methodology for the demonstration of compatibility between rolling stock and track circuits;
c)   a measurement method to verify interference current limits and evaluation criteria.
NOTE 1   The basic parameters of track circuits associated with the interference current limits for RST are not in the scope of this document.
NOTE 2   Any phenomena linked to traction power supply and associated protection (over voltage, short-circuit current, under- and over-voltage if regenerative brakes are used) is part of the track circuit design and outside the scope of this document.

This document specifies a test method for the determination of per cent recovery and non-recoverable creep compliance of bitumens and bituminous binders by means of a Multiple Stress Creep and Recovery (MSCR) test. The MSCR test is conducted using the Dynamic Shear Rheometer (DSR) in creep mode at a specified temperature.
The per cent recovery at multiple shear stress levels is intended to determine the presence of elastic response and the stress dependence of bituminous binders. The non-recoverable creep compliance at multiple shear stress levels is intended as an indicator for the sensitivity to permanent deformation and stress dependence of bituminous binders.
This document is applicable to un-aged, aged, stabilized and recovered bituminous binders. The test procedure in accordance with this document is not applicable for bituminous binders with particles larger than 250 μm (e.g. filler material, granulated rubber).
WARNING — The use of this document can involve hazardous materials, operations and equipment. This document does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this document to establish appropriate safety and health practices, workers protection, and to determine the applicability of regulatory limitations prior to use. The use of this document involves handling of apparatus and binders at very high temperatures.

This document gives guidance for pro-rata multi-habitat sampling of benthic macroinvertebrates in rivers and streams. The term "pro-rata" reflects the intention to sample all the main riverine habitats present at a monitoring site according to the proportion of the site that it covers. It is an objective way to divide sampling effort among the different habitats.
This document is applicable to all flowing waters, both artificial, modified and natural. It enables comparable samples to be collected from any type of river, regardless of the habitats present.
This document gives guidance on an overall approach rather than a specific method.
This document is applicable to:
- supporting environmental and conservation agencies, water boards, and water agencies to meet the monitoring requirements of the WFD (Article 8, Annex II, and Annex V) [1];
- generating data sets appropriate for monitoring and reporting of sites designated under the Habitats Directive and the Birds Directive to ensure that samples for comparing the overall composition of invertebrates from different stream types are comparable;
- ensuring samples for environmental quality assessments across different stream types are comparable even when sampled by different people;
- supporting river management and restoration initiatives;
- sampling sites in a consistent way that is not dependent on the presence of particular types of habitat; a user-friendly strategy for collecting biological data depending on the distribution of habitats;
- understanding the distribution of biological community types across different physical river types; and
- assessing quality based on deviation from reference, as adopted in the European Water Framework Directive [1].

The present document is a specification of the lower layers and the lower layer signalling system for the two-way satellite network variants defined by ETSI TS 101 545-3 [i.16]. The present document constitutes a complete specification of the lower layers for a transparent star satellite network, a transparent mesh overlay satellite network and a regenerative re-multiplexing satellite network. Also, components required for a satellite network with a TRANSEC system are included. The present document is normative for the consumer terminal profile in a transparent star satellite network as defined by ETSI TS 101 545-3 [i.16], and does also include normative components specific to the other terminal profiles and satellite network variants defined by ETSI TS 101 545-3 [i.16].

This document specifies the fuel quality classes and specifications of graded firewood. This document applies only to firewood produced from the following raw materials (see ISO 17225-1:2021, Table 1):
— 1.1.1 Whole trees without roots;
— 1.1.3 Stemwood;
— 1.1.4 Logging residues (thick branches, tops, etc.);
— 1.2.1 Chemically untreated by-products and residues from wood processing industry.

This document provides the quality of gases alternative to SF6 (subsequently referred to as gases) for their re-use in electrical power equipment after recovery and if applicable reclaiming (e.g., during maintenance, repair, overhaul or at the end-of-life). The re-use criteria consider technical and environmental concerns.
This document covers the same gases as listed in IEC 63360. For gases not mentioned in this document, the electrical power equipment manufacturer and/or the gas manufacturer provide the information indicated in this document. It is the intention of this document to include such gases in a next edition or in amendments to this edition.
Procedures for recovering and reclaiming of used gases are described in IEC 62271-4:2022.
NOTE 1 Reclaiming procedures of gases can be done by either reclaiming the complete gas or by separating the most valuable components from the gas.
Gas analysis techniques for checking the quality of the gas are described in this document.
It is the responsibility of the gas manufacturer and/or the electrical power equipment manufacturer to provide sufficient information for safe handling of gases and to provide a risk assessment. It is the responsibility of the user of the electrical power equipment to establish appropriate health and safety practices and to determine the applicability of regulatory limitations prior to use.
NOTE 2 If not otherwise specified in this document, concentration values (e.g. %, ppmv, μl/l) of gas components or contaminants are given in volume fraction at 20 °C and 100 kPa. More information on temperature and pressure dependence of mole fraction and volume fraction is given in IEC 63360:2025, Annex C.
NOTE 3 If gases for electrical power equipment are regulated, their designation and regulation origin can be found in the IEC 62474 database [1]1 (available at https://std.iec.ch/iec62474).
NOTE 4 Information about storage, transportation and disposal of gases, gas properties, safety and first aid, environmental impact, training and certification, handling equipment, by-products, and procedures to evaluate the potential effects on health are covered by IEC 62271-4:2022.

This document gives guidelines for the assessment of thermal stress inside vehicles used for land, sea and air operation. It offers information about the assessment of hot, cold as well as moderate thermal environments by referring to different methods and specifying the constraints and necessary adjustments for the special case of vehicle climate assessment.

This document specifies a method to evaluate, by means of impactors described in ISO 29584:2015, safe breakage characteristics of vacuum insulating glass (VIG) products intended to reduce cutting and piercing injuries to persons through accidental impact. This document does not specify the intended use of the products, but provides a method of classification in terms of the performance of the products being tested. The impact energy used for the various levels of classification are designed to provide the intended user or the legislator with the information to assist in defining the level of safety and protection required relative to the intended location at which the selected safety glass is to be used. The products to which this document is applicable are: VIG without further processing (Group 2); VIG processed into a laminated glass (Group 1); VIG backed with an adhesive (safety) film (Group 1). Insulating glass units incorporating VIG are excluded from this document.

IEC 62820-1-1:2026 specifies the technical requirements for building intercom systems and equipment used for building entry.

This document specifies a method for the determination of the puncture resistance by measuring the force required to push a flat-ended plunger through geosynthetics. The test is normally carried out on dry specimens conditioned in the specified atmosphere. The test is applicable to most types of geosynthetic products, but does not apply to products with apertures greater than 10 mm.

This document specifies a method for the determination of selected polybrominated diphenylethers (PBDE) (see Figure 1 and Table 1) in sediment, suspended particulate matter and biota using gas chromatography coupled with tandem mass spectrometry (GC-MS/MS) or with high resolution mass spectrometry (GC-HRMS) in the electron impact (EI), negative ion chemical ionization (NCI) or atmospheric pressure ionization (APCI) mode. The method is applicable to sediment and suspended particulate matter samples with limits of quantification of 0,2 µg/kg dry mass (dm) for brominated diphenylether (BDE) BDE-28 to BDE-183, of 2 µg/kg dry mass (dm) for BDE‑209. The method is applicable as well with lower limits of quantification (LOQ), if specific clean-up methods, described in Clause 10, Table 3, method 1 and method 2 in combination with measurement methods GC-MS/MS or GC-HRMS after electron impact ionization (El) or negative ion chemical ionization (NCI) for BDE-209 are used. Depending on the analytical capability of the instrument, limits of quantification down to 0,003 µg/kg dm for BDE-28 to BDE-154 and 0,02 µg/kg dm for BDE-183 and 1 µg/kg dm for BDE-209 and lower are possible. The method is applicable to biota samples with limits of quantification down to 0,000 2 µg/kg fresh mass (fm) (BDE-28 to BDE-154) and 0,03 μg/kg fresh mass (fm) (BDE-183), if specific clean-up methods, described in Table 4 in combination with measurement methods GC-MS/MS or GC-HRMS after electron impact ionization (El) are used. Performance data are listed in Annex E.

This document is applicable to all electronic equipment for control, regulation, protection, diagnostic, energy supply installed on railway vehicles and any relevant elements of rolling stock subsystems (e.g. external doors, On-Board ETCS functionality, wheel slide protection). For the purpose of this document, electronic equipment is defined as equipment composed of electronic components (e.g. resistors, capacitors, transistors, diodes, integrated circuits, hybrids, application specific integrated circuits, wound components and relays), and recognized associated components (e.g. connectors, mechanical parts). These components are mainly mounted on printed circuit boards. Sensors (e.g. current, voltage, speed) and semiconductor drive units for power electronic devices are covered by this document. Complete semiconductor drive units and power converters are covered by EN 61287 1. This document covers the requirements for operating conditions, design, documentation, testing and integration of electronic equipment, as well as hardware and software requirements considered necessary for compliant and reliable equipment. Specific requirements related to practices necessary to ensure defined safety integrity level or functional safety are not covered by this document. Nevertheless, this document is applicable to the hardware of all rolling stock electronic equipment or systems performing safety-related functions. The software development requirements for on-board railway equipment are specified by EN 50716.

This document specifies the calibration and adjustment of the metrological characteristics of contact (stylus) instruments for the measurement of surface texture by the profile method as defined in ISO 25178-601. The calibration and adjustment specified within this document is intended to be carried out with the aid of measurement standards. NOTE Annex B specifies the calibration and adjustment of metrological characteristics of simplified operator contact (stylus) instruments which do not conform with ISO 25178-601.

This document specifies processes for the management and operation of data centres. The primary focus of this document is the processes necessary to deliver the expected level of resilience, availability, risk management, risk mitigation, capacity planning, security and resource and energy efficiency. The secondary focus is on organization and data centre management to align the actual and future demands. Only processes specific for data centres are in the scope of this document. Business processes like people management, financial management, etc. are out of scope.