Normy

Obsah

ČSN EN 81-76 This document specifies the additional requirements to EN 81 20:2020 for new passenger and goods passenger lifts, which can be used to support faster evacuation of persons with disabilities, including in case of fire alarm. This document does not apply to: - lifts for evacuation due to circumstances which introduce other hazards such as explosion threat, chemical or biological attack, flooding, storm damage, or earthquake. In these cases, this document can be used as a basis with further measures as required from risk assessment; - the provision of evacuation aids to assist when the evacuation lift is unavailable. The significant hazards covered by this document are listed in Annex D. The following significant hazards are out of the scope of this document: - fire or smoke in the evacuation lift well, safe areas or machinery spaces; - ingress of water to the lift well during evacuation process; - insufficient or incorrectly located evacuation lifts; - insufficient evacuation capacity; - inability of users to understand the use of the lift in evacuation; - entrapment in waiting area (safe area) due to absence of lift service or adjacent stairs; - structural collapse or failure of building services (including public supply network, lighting, ventilation) before the evacuation using lifts has been completed; - presence of harmful gases, potentially explosive atmosphere, extreme climate conditions, transport of dangerous goods; - unavailability of the evacuation lift. This document is not applicable to evacuation lifts manufactured before the date of its publication.

Obsah

ČSN EN IEC 60068-2-88 This part of IEC 60068 2 establishes test methods for the resistance of electronic and electromechanical components, unpopulated circuit boards and assemblies to liquid cleaning media and cleaning processes, which are agreed between user and supplier for applications, where cleaning is required. These tests are not applicable to components, unpopulated circuit boards and assemblies, which are not intended to be subjected to cleaning processes. Tests XD1 and XD2 primarily are intended for qualification testing of components and unpopulated circuit boards suitable for cleaning processes but can be adopted as well to testing of material compatibility and specific cleaning media used in manufacturing processes of components and unpopulated circuit boards. Test XD3 is intended to determine the resistance of electronic assemblies suitable for cleaning processes to the various cleaning processes to which they are exposed during manufacturing, including the effects of assembly and soldering processes.

Obsah

ČSN EN IEC 61203 ed. 2 Tento dokument uvádí postupy a dohled nad používáním a údržbou syntetických esterů v transformátorech a jiných elektrických zařízeních. Tento dokument se vztahuje na syntetické estery, původně dodávané v souladu s IEC 61099 a dalšími platnými normami v transformátorech, rozváděčích a elektrických zařízeních, kde je praktický odběr vzorků kapaliny a kde platí běžné provozní podmínky uvedené ve specifikacích zařízení. Tento dokument má rovněž pomoci provozovateli energetického zařízení při vyhodnocování stavu syntetického esteru a při jeho udržování v provozuschopném stavu. Poskytuje také společný základ pro přípravu konkrétnějších a úplnějších místních předpisů. Tento dokument obsahuje doporučení týkající se zkoušek a postupů hodnocení a popisuje metody obnovy a regenerace kapaliny, pokud je to nezbytné.

Obsah

ČSN EN IEC 61754-36 Norma specifikuje rozměry normovaných mechanických rozhraní pro soubor optických konektorů typu SAC. Norma obsahuje normativní přílohu A, týkající se polohy jádra vlákna, informativní přílohu B, uvádějící dodatečné rozměrové informace pro adaptér a informativní přílohu C, týkající se blokovacího mechanismu.

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ČSN EN IEC 61847 ed. 2 This document specifies the essential non-thermal output characteristics of ultrasonic surgical units; methods of measurement of these output characteristics; those characteristics to be declared by the manufacturers of such equipment.

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ČSN EN ISO 15630-3 Tento dokument specifikuje zkušební metody vhodné pro předpínání oceli (tyč, drát nebo pramenec) do betonu.

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ČSN EN ISO 4255 This document specifies the conditions for determination of the axial tensile properties of ceramic matrix composite (CMC) tubes with continuous fibre-reinforcement at elevated temperature in air, vacuum and inert gas atmospheres. The applicability of this document is specific to tubular geometries because fibre architecture and specimen geometry factors in composite tubes are distinctly different from those in flat specimens. This document provides information on the axial tensile properties and stress-strain response in temperature, such as axial tensile strength, axial tensile strain at failure and elastic constants. The information can be used for material development, control of manufacturing (quality insurance), material comparison, characterization, reliability and design data generation for tubular components. This document addresses, but is not restricted to, various suggested test piece fabrication methods. This document is primarily applicable to ceramic matrix composite tubes with a continuous fibrous reinforcement: unidirectional (1D, filament winding and tape lay-up), bi-directional (2D, braid and weave) and multi-directional (xD, with x > 2), tested along the tube axis.

Obsah

ČSN EN 1366-9 Tato část EN 1366 specifikuje zkušební metodu pro stanovení požární odolnosti potrubí pro odvod kouře, které se použije pouze pro jeden úsek. Při tomto použití je systém odvodu kouře určen pouze pro činnost před celkovým vzplanutím (typicky 600 °C). Tato metoda zkoušení je vhodná pouze pro potrubí zhotovená z nehořlavých materiálů (třída A1 a A2-s1,d0 podle EN 13501-1). Platí pouze pro čtyřstranná potrubí a kruhová potrubí. Neplatí pro potrubí s jednou, dvěma nebo třemi stranami. Tato norma platí pouze pro normové velikosti nebo menší velikosti, jak je uvedeno. Zkušební metoda v této části 9 je určena pouze pro potrubí pro odvod kouře, které neprochází jiným požárním úsekem. Pro potrubí pro odvod kouře, která procházejí jiným požárním úsekem, se použije metoda zkoušení popsaná v EN 1366-8. Potrubí pro odvod kouře je součástí systému pro odvod kouře, který zahrnuje také klapky pro odvod kouře a ventilátory pro odvod kouře.

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ČSN EN ISO 4823 This document specifies the requirements and their test methods for elastomeric impression and bite registration materials.

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ČSN EN ISO 22359 This document provides guidelines for the design, use and maintenance of hardened protective shelters (hereafter referred to as "shelters"). It specifies guidance on the layout, structures, equipment and actions related to a shelter. This document is intended for organizations or individuals responsible for or involved in decision-making, planning, implementation, administration, use or upkeep of shelters, such as local, regional and national governments, civil protection agencies, first responders and businesses such as designers, constructers and equipment suppliers. This document does not cover the minimum requirements or exact specifications for the properties of or actions related to a shelter; nor does it cover rapidly erected temporary shelters, such as lightweight canvas weather shelters, other tarp tent shelters, or metal and container shelters. Military shelters are subject to additional requirements which are outside the scope of this document.

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ČSN EN 17671 (06 0401) This document specifies design criteria for closed water-based cooling systems in buildings and the design of such systems is described. The definitions are aimed at achieving an appropriate level of technical quality and maintaining the desired thermal indoor climate with minimum energy consumption. This document does not apply to systems for dissipating process heat from industrial processes. It also does not apply to and does not amend product standards or product installation requirements. This document is applicable to cooling systems of the following type (see also Figure 1): 1) devices for the water-based heat rejection of the chilling system; 2) devices for chilling and storage of chilled water; 3) devices for the distribution of chilled water; 4) devices for the absorption of heat ("cooling emission"); 5) control devices; 6) safety devices.

Obsah

ČSN EN ISO 5149-4 This document specifies requirements for safety and environmental aspects in relation to operation, maintenance and repair of refrigerating systems and the recovery, reuse and disposal of all types of refrigerant, refrigerant oil, heat transfer fluid, refrigerating system and part thereof. This document does not cover "motor vehicle air conditioners" constructed according to the product standards such as ISO 13043. These requirements are intended to minimize risks of injury to persons and damage to property and the environment resulting from improper handling of the refrigerants or from contaminants leading to system breakdown and resultant emission of the refrigerant.