Normy

Obsah

ČSN EN ISO 29465 This document specifies the equipment and procedures for determining the length and width of full size products. It is applicable to thermal insulating products.

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ČSN EN ISO 29468 This document specifies the equipment and procedures for determining the deviation from flatness for full-size products. It is applicable to thermal insulating products.

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ČSN EN ISO 29768 This document specifies the characteristics and choice of measuring equipment and the procedure for determining the linear dimensions of test specimens that are taken from thermal insulating products. The procedures for measuring the dimensions of full-size products are specified in ISO 29465 and ISO 29466.

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ČSN EN ISO 29770 This document specifies the equipment and procedures for determining the thickness of thermal insulating products for impact sound insulation in floating-floor applications.

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ČSN EN ISO 18098 This document specifies the equipment and procedures for determining the apparent overall density and the apparent core density under reference conditions. It is applicable to full-size thermal insulating products and test specimens of preformed pipe insulation.

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ČSN EN 17678-1 (73 2440) This document specifies the minimum training and registration requirements for post-tensioning personnel involved in the installation of PT kits. These PT kits are typically used in concrete structures using bonded or unbonded tendons in accordance with the relevant execution specifications, product standard and / or appropriate technical assessment. This document specifies the tasks that the various categories of PT personnel can undertake. For the purposes of this document, PT personnel means: PT Manager, PT Supervisors, PT Operatives and PT Trainees who are directly employed or indirectly employed on a sub-contract basis. This document does not cover general safety and health aspects. This document does not cover contractual issues. prEN 17678-2:2022 deals with the assessment of competence.

Obsah

ČSN EN 16933-1 Tento dokument specifikuje požadavky pro navrhování odvodňovacích a stokových systémů vně budov. Tento dokument je použitelný pro stokové systémy od začátku kanalizační přípojky, pro oddílnou dešťovou kanalizaci, případně kanalizaci jednotnou, a dále pak pro odvodňovací systémy oddílné dešťové kanalizace odvádějící srážkové vody ze zpevněných ploch, k místu vyústění směsi těchto vod na čistírnu odpadních vod nebo k místu zaústění srážkové oddílné kanalizace do vodního recipientu. Tento dokument specifikuje požadavky pro zásady návrhu odvodňovacích a stokových systémů.

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ČSN ETSI EN 300 019-2-0 V2.2.1 The present document specifies the test severities and methods for verification of the required resistibility for equipment which is to be stored, transported and used in the environments which characteristics are defined in ETSI EN 300 019 1 [2]. The purpose of the present document is to provide a general overview of ETSI EN 300 019-2 [3]. ETSI TR 100 035 [i.1] should be used in conjunction with ETSI EN 300 019 multi-parts deliverable [2] and [3]. It gives an introduction to the main concepts of environmental engineering, the purpose and use of environmental classes and the corresponding test philosophy.

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ČSN EN IEC 61400-50 The IEC 61400 series of standards addresses wind energy generation technical requirements up to the point of interconnection with the utility grid system. The IEC 61400-50 series of standards comprises a sub-set of standards which specify the requirements for equipment and methods to be used in the measurement of the wind. Wind measurements are required as inputs to various tests and analyses specified in other use-case standards in the IEC 61400 series (e.g. power performance, resource assessment, noise measurement). Whereas those other standards define use-cases for wind measurements, the IEC 61400-50 series sets those wind measurement requirements which are independent of the use-case. Its purpose is to ensure that wind measurements and the evaluation of uncertainties in those measurements are carried out consistently across the wind industry and that wind measurements are carried out such that the uncertainties can be quantified and that those uncertainties are within an acceptable range. This document provides a general introduction to the options that are available for wind measurement, which are further detailed in the other parts of the IEC 61400-50 series.

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ČSN EN 1978 Tento dokument stanovuje požadavky na chemické složení a vlastnosti katod z dvou tříd mědi označených Cu-CATH-1 (CR001A) a Cu-CATH-2 (CR002A). Příloha A (normativní) popisuje metody pro odběr vzorků katod pro použití v případech sporu mezi dodavatelem a odběratelem. Příloha B (informativní) uvádí informace o vztazích mezi rezistivitou a konduktivitou mědi.

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ČSN P CEN/TS 17847 This document specifies a method for quantitative determination of the concentration of selected alcohols with low boiling point in liquid waste and pasty waste by gas chromatography with flame ionization detection after static headspace extraction. Under the conditions specified in this document, a limit of application of 20 mg/kg, expressed on dry matter for pasty waste and expressed on raw waste for liquid waste, can be achieved.

Obsah

ČSN EN ISO 14571 This document specifies a method for non-destructive measurements of the thickness of conductive coatings on non-conductive base materials. This method is based on the principle of the sheet resistivity measurement and is applicable to any conductive coatings and layers of metal and semiconductor materials. In general, the probe has to be adjusted to the conductivity and the thickness of the respective application. However, this document focuses on metallic coatings on non-conductive base materials (e.g. copper on plastic substrates, printed circuit boards). This method is also applicable to thickness measurements of conductive coatings on conductive base materials, if the resistivity of the coating and the base material is significantly different. However, this case is not considered in this document.