Normy

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ČSN EN ISO 9612 Tento dokument specifikuje metodu měření expozice zaměstnanců hluku v pracovním prostředí a výpočet hladiny expozice hluku. Tento dokument pojednává o hladinách vážených funkcí A, avšak vztahuje se rovněž na hladiny vážené funkcí C. Jsou specifikovány tři různé strategie měření. Metoda je použitelná při podrobných studiích expozice hluku nebo epidemiologických studiích poškození sluchu nebo jiných nepříznivých účinků. Měřicí postup vyžaduje pozorování a analýzu podmínek expozice hluku, aby mohla být řízena kvalita měření. Tento dokument poskytuje metody identifikace nejistoty výsledků. Tento dokument není určen pro posuzování maskování mluvené komunikace nebo posouzení infrazvuku, ultrazvuku a mimo sluchových účinků hluku. Nevztahuje se na měření expozice ucha hluku, pokud jsou nošeny chrániče sluchu. Výsledky měření prováděných v souladu s tímto dokumentem mohou poskytovat užitečné informace při stanovení priorit v opatřeních na snižování hluku.

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ČSN P CEN ISO/TS 23359 This document specifies methods for characterizing the chemical properties of powders or liquid dispersions containing graphene-related two-dimensional material (GR2M), using a set of suitable measurement techniques. This document covers the determination of elemental composition, oxygen to carbon ratio, trace metal impurities, weight percentage of chemical species and functional groups present, by use of the following techniques: - X-ray photoelectron spectroscopy (XPS); - thermogravimetric analysis (TGA); - inductively coupled plasma mass spectrometry (ICP-MS); -Fourier-transform infrared spectroscopy (FTIR). This document covers sample preparation, protocols and data analysis for the different techniques.

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ČSN EN ISO 12870 This document specifies fundamental requirements and their test methods for unglazed spectacle frames designed for use with prescription lenses. It is applicable to spectacle frames at the point of sale by the manufacturer or supplier to the retailer. This document is applicable to: - all mass-produced spectacle frame types, including rimless mounts, semi-rimless mounts and folding spectacle frames; - spectacle frames made with additive manufacturing, for example, 3D printing; - spectacle frames made from natural organic materials; - the frame or mount of clip-ons designed specifically for attachment to particular models of spectacle frame, but not to their lenses or filters to which ISO 16034 or ISO 12312-1 apply; - prescription inserts designed for attachment to particular models of, for example, eye protector, sunglass or diving mask. Parts of this document are applicable to custom-made frames - see 3.1.3 and Table 1. NOTE - See Annex A for recommendations on the design of spectacle frames and terms to be used when describing metal frames. This document is not applicable to spectacle frames used in eye protection, where ISO 16321-1 applies, or to sunglasses with afocal filters, where ISO 12312-1 applies.

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ČSN EN IEC 62007-2 ed. 3 Tato norma popisuje měřicí metody, aplikovatelné na optoelektronická polovodičová zařízení, která se používají v optických vláknových digitálních komunikačních systémech a subsystémech.

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ČSN EN 18025 This document gives guidelines for the restoration of rivers, including their channels, riparian zones and floodplains. The word 'river' is used as a generic term to describe permanently flowing and intermittent watercourses of all sizes, with the exception of artificial water bodies such as canals. Some aspects of landscape restoration beyond the boundaries of what are often considered typical river processes are also considered. A clear framework of guiding principles to help inform the planning and implementation of river restoration work is provided. These principles are applicable to individuals and organizations wishing to restore rivers, and stress the importance of monitoring and appraisal. This document makes reference to existing techniques and guidance, where these are appropriate and within the scope of this document. This document gives guidelines on: - the core principles of restoration; - aims and overall outcomes of river restoration; - the spectrum of typical approaches to river restoration with a focus on those that are nature-based and restore both physical and ecological aspects; - identifying opportunities for restoration and possible constraints, with a focus on physical and natural rather than socio-economic aspects; - different scales of restoration and how restoration works across different catchments and landscapes; - the importance of monitoring and appraising restoration work across the range of approaches and scales.

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ČSN EN 397 Tento dokument stanovuje požadavky na konstrukci, výkon, zkušební metody a označování průmyslových ochranných přileb. Požadavky se vztahují na přilby pro obecné použití v průmyslu. Dodatečné požadavky na provedení pro speciální použití se uplatňují pouze tehdy, pokud je výrobce přilby výslovně uvede. Průmyslové ochranné přilby jsou určeny ke snížení rizika poranění hlavy způsobeného nárazy, a tím mohou snížit následné dopady.

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ČSN EN 15316-5 This document specifies energy performance calculation of water based storage sub-systems used for heating, for domestic hot water or for combination of these. This document does not apply to sizing or inspection of such storage systems. Table 1 shows the relative position of this document within the set of EPB standards in the context of the modular structure as set out in EN ISO 52000 1. NOTE 1 - In CEN ISO/TR 52000 2, the same table can be found with, for each module, the numbers of the relevant EPB standards and accompanying Technical Reports that are published or in preparation. NOTE 2 - The modules represent EPB standards, although one EPB standard may cover more than one module and one module may be covered by more than one EPB standard, for instance a simplified and a detailed method respectively. See also Clause 2 and Tables A.1 and B.1.

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ČSN EN 17860-4 This document is applicable to carrier cycles with or without electric assistance with a minimum gross vehicle weight that is bigger than 300 kg and a maximum gross vehicle weight of 650 kg.

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ČSN EN IEC 60079-45 This part of IEC 60079 is intended to enhance the safety of personnel by providing minimum requirements for electrical ignition systems for spark-ignited reciprocating internal combustion engines, parts of which provide Equipment Protection Level (EPL) Gc. This document provides minimum construction and test requirements, in addition to manufacturer installation and maintenance recommendations, for the safe operation of ignition systems and components for spark-ignited reciprocating internal combustion engines providing EPL Gc for equipment Group IIB+H2, IIB or IIA. These requirements apply to systems rated for normal operation with secondary voltages less than or equal to 60 kV. This document applies only to the ignition systems or the individual ignition system components used on reciprocating internal combustion engines that are stationary when in operation and mobile machinery where the internal combustion engine can be potential source of ignition. Applications addressed by the scope of this document include but are not limited to gas compressors, electric power generators, forklift trucks, and pumps. This document does not apply to: a) Engine ignition systems that utilize a breaker point or magneto type ignition systems as these would not be suitable for use in a hazardous area. a) Road vehicles. b) Low voltage parts and electrical installation that are not included in the ignition system, such as various sensors and thermocouples, throttle actuator(s), fuel control valve(s), human machine interface (HMI), respective harness and wiring and all the other items that might belong to the integrated control system besides the ignition system. This document supplements and modifies the general requirements of IEC 60079-0 and the requirements of ISO/IEC 80079-41. Where a requirement of this document conflicts with IEC 60079 0 or ISO/IEC 80079-41, the requirement of this document takes precedence. NOTE - See ISO/IEC 80079-41 for the requirements for explosion protection for EPL Gc reciprocating internal combustion engines.

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ČSN EN 50388-2 Tato norma stanovuje kritéria přijatelnosti podle EN 50388-1:2022, 10.2 pro kompatibilitu mezi hnacími jednotkami a napájením pro známé jevy a známé technologie. To se týká: - koordinace mezi řízenými prvky a také mezi těmito prvky a rezonancemi v elektrické infrastruktuře za účelem dosažení stability síťové soustavy; - koordinace harmonického chování s ohledem na vznik elektrických rezonancí. Do oblasti rozsahu platnosti spadají tyto elektrické trakční systémy: - železniční; - systémy městské dopravy s vyhrazenou vodicí dráhou, které jsou integrovány se železnicí; - systémy přepravy materiálu integrované se železnicí.

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ČSN EN IEC 60947-5-7 ed. 2 This part of IEC 60947 states the requirements for proximity devices that correspond to the scope of IEC 60947-5-2:2019 with analog output (PDAO) and/or a digital output to transmit a corresponding digital value representing the detected sensing input. These devices can provide additional parameters. Figure 1 shows the schematic principle of such a device. They might consist of one or more parts. The requirements of IEC 60947-5-2, Low-voltage switchgear and controlgear - Part 5-2: Control circuit devices and switching elements - Proximity switches, apply with the additions and modifications as stated in this document. The clause numbering in this document follows the clause numbering of IEC 60947-5-2, modified where necessary.

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ČSN EN 12186 (38 6417) This document specifies the functional requirements relevant for design, materials, construction, testing, operation and maintenance of gas pressure control stations to ensure their reliability in terms of safety of the station itself and the downstream system and continuity of service. This document is applicable for gas pressure control stations which are part of gas transmission or distribution systems for hydrogen, and hydrogen rich, and methane rich gases. Additional requirements in the case of gases heavier than air and/or toxic or corrosive gases are not covered by this document. This document does not apply to gas pressure control stations in operation prior to the publication of this document. However, Annex D of this document can be used as guidance for the evaluation of stations in operation prior to the publication of this document, regarding the change of the type of gas, e.g. repurposing for the use with hydrogen. The stations covered by this document have a maximum upstream operating pressure, which does not exceed 100 bar. For higher maximum upstream operating pressures, this document can be used as a guideline. If the inlet pipework of the station is a service line and the maximum upstream operating pressure does not exceed 16 bar and the design flow rate is equal to 2000 kW based on the gross calorific value or less, EN 12279 applies. This document contains the basic system requirements for gas pressure control stations. Requirements for individual components (valves, regulators, safety devices, pipes, etc.) or installation of the components are contained in the appropriate European Standards. NOTE - For combined control and measuring stations, the additional requirements of EN 1776 can apply. The requirements in this document do not apply to the design and construction of auxiliary facilities such as sampling, calorimetering, odorization systems and density measuring. These facilities are covered by the appropriate European Standards, where existing, or applicable national standards. The requirements of this document are based on good gas engineering practice under conditions normally encountered in the gas industry. Requirements for unusual conditions cannot be specifically provided for, nor are all engineering and construction details prescribed. The objective of this document is to ensure the safe operation of such stations. This does not, however, relieve all concerned of the responsibility for taking the necessary care and applying effective quality and safety management during the design, construction, operation and maintenance.