Normy

Obsah

ČSN EN IEC 62604-1 ed. 2 Tato norma specifikuje metody zkoušení a obecné požadavky na duplexery hodnocené kvality s povrchovou akustickou vlnou (PAV) a s objemovou akustickou vlnou (OAV), které používají buď postupy schvalování způsobilosti, nebo postupy schvalování kvalifikace.

Obsah

ČSN EN IEC 61753-043-02 Norma uvádí zkušební požadavky na vlnově selektivní šňůry používané v řízeném prostředí (kategorie C) podle IEC 61753-1:2018, kde konektory již splňují požadavky kategorie C podle IEC 61753-1:2018. Vybrané zkoušky jsou podmnožinou zkoušek konektorů z IEC 61753-1:2018, které jsou vhodné pro rekvalifikaci pomocí dalších požadavků týkající se šňůr a rozhraní konektor/kabel. Norma obsahuje normativní přílohy A, B, C a informativní přílohy D a E. Příloha A uvádí požadavky na velikost vzorku, příloha B uvádí postup vizuální kontroly pohybu vnějšího pláště kabelu, příloha C uvádí požadavky na změnu teploty, příloha D uvádí princip funkce vlnově selektivní šňůry a příloha E uvádí příklady aplikací vlnově selektivních šňůr.

Obsah

ČSN EN IEC 60598-2-22 ed. 3 Tato norma specifikuje požadavky na svítidla pro nouzové osvětlení používající elektrické světelné zdroje napájené nouzovým napětím nepřevyšujícím 1 000 V. Nevztahuje se na účinky poklesu napětí svítidel s vysokotlakými výbojkami, které nejsou napájeny nouzovým napětím. Uvádí obecné požadavky na zařízení nouzového osvětlení. Je použit termín "světelný zdroj", který také zahrnuje "světelné zdroje", podle potřeby.

Obsah

ČSN EN ISO 8330 Tento dokument specifikuje termíny používané v gumárenském průmyslu.

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ČSN EN 13483 This document specifies the requirements and test methods for verification for hose assemblies with vapour recovery for delivery systems on petrol filling stations. Hoses can be constructed from rubber or thermoplastic elastomer (TPE) and this document specifies the requirements for three types of hoses in two grades and two classes of hose assemblies for measured fuel dispensing systems, including oxygenated fuels (

Obsah

ČSN EN ISO 29481-3 This document is the technical addition to the methodology set out in ISO 29481-1. It defines a specification to store, exchange and read information delivery manual (IDM) specifications in a standardized and machine-readable way.

Obsah

ČSN EN ISO 19204 This document describes in a general way the application of the soil quality TRIAD approach for the site-specific ecological risk assessment of contaminated soils. In detail, it presents in a transparent way three lines of evidence (chemistry, ecotoxicology and ecology) which together allow an efficient, ecologically robust but also practical risk assessment of contaminated soils. This procedure can also be applicable to other stress factors, such as acidification, soil compaction, salinization, loss of soil organic substance, and erosion. However, so far, no experience has been gained with these other applications. Therefore, this document focuses on soils contaminated by chemicals. NOTE 1 - This document focuses on ecological risk assessment. Thus, it does not cover human health end points. In view of the nature of this document, the investigation procedure is described on a general level. It does not contain details of technical procedures for the actual assessment. However, this document includes references relating to technical standards (e.g. ISO 15799, ISO 17616) which are useful for the actual performance of the three lines of evidence. In ecological risk assessment, the effects of soil contamination on the ecosystem are related to the intended land use and the requirements that this use sets for properly functioning soil. This document describes the basic steps relating to a coherent tool for a site-specific risk assessment with opportunities to work out site-specific details. This document can also be used for the evaluation of clean-up operations, remediation processes or management measures (i.e. for the evaluation of the environmental quality after having performed such actions). NOTE 2 - This document starts when it has already been decided that an ecological risk assessment at a given site needs to be performed. In other words, the practical performance of the soil quality TRIAD and the evaluation of the individual test results will be described. Thus, nothing will be said about decisions whether (and if yes, how) the results of the assessment are included in soil management measures or not. NOTE 3 - The TRIAD approach can be used for different parts of the environment, but this document focuses mostly on the soil compartment. Comparable documents for other environmental compartments are intended to be prepared in addition (e.g. the terrestrial aboveground compartment) in order to perform a complete site assessment, based on the same principles and processes.

Obsah

ČSN EN ISO 7494-2 This document specifies requirements and test methods for stationary dental units concerning a) the properties of stationary dental unit connections to the compressed air supply, water supply, suction supply, and wastewater drain plumbing, b) the materials, design, and construction of the compressed air and water system within the stationary dental unit, c) the quality for incoming water and air, d) the performance of stationary dental unit suction system, and e) the air, water, suction and wastewater properties of stationary dental unit connections to the interfaces to dental handpieces. This document also specifies requirements for instructions for use and technical description. This document does not specify requirements or test methods for the effectiveness of stationary dental unit waterline biofilm control. NOTE - Test methods for the effectiveness of stationary dental unit waterline biofilm control are specified in ISO 16954. This document is only applicable to stationary dental units that are not used for oral surgery treatment requiring sterile air and water supplies. Amalgam separators are not included in this document.

Obsah

ČSN EN ISO 28765 This document specifies the requirements for the design and use of vitreous enamel coated bolted cylindrical steel tanks for the storage or treatment of water or municipal or industrial effluents and sludges. It is applicable to the design of the tank and any associated roof and gives guidance on the requirements for the design of the foundation. It is applicable where: a) the tank is cylindrical and is mounted on a load-bearing base substantially at or above ground level; b) the product of the tank diameter in metres and the wall height in metres lies within the range 5 to 500; c) the tank diameter does not exceed 100 m and the total wall height does not exceed 50 m; d) the stored material has the characteristics of a liquid, exerting a negligible frictional force on the tank wall; the stored material can be undergoing treatment as part of a municipal or industrial effluent treatment process; e) the internal pressure in the headspace above the liquid does not exceed 50 kPa and the internal partial vacuum above the liquid does not exceed 10 kPa; f) the walls of the tank are vertical; g) the floor of the tank is substantially flat at its intersection with the wall; the floor of the tank can have a rise or fall built in to allow complete emptying of the tank contents, the slope of which does not exceed 1:100; h) there is negligible inertial and impact load due to tank filling; i) the minimum thickness of the tank shell is 1,5 mm; j) the material used for the manufacture of the steel sheets is carbon steel (tanks constructed of sheets made from aluminium or stainless steel are outside the scope of this document); k) the temperature of the tank wall during operation is within the range -50 °C to +100 °C under all operating conditions. This document also gives details of procedures to be followed during installation on site and for inspection and maintenance of the installed tank. It does not apply to chemical-reaction vessels. It does not cover resistance to fire.

Obsah

ČSN EN ISO 13119 This document specifies a number of metadata elements that describe resources containing medical knowledge, primarily digital documents provided as web resources, accessible from databases or via file transfer, but can be applicable also to paper documents, e.g. articles in the medical literature. The metadata elements - support unambiguous and international understanding of important aspects to describe a resource, e.g. pur-pose, issuer, intended audience, legal status and scientific background, - are applicable to different kinds of digital resources, e.g. recommendation from consensus of a professional group, regulation by a governmental authority, clinical trial protocol from a pharmaceutical company, scientific manuscript from a research group, advice to patients with a specific disease, review article, - are possible to present to human readers including health professionals as well as individuals/patients, and - are potentially usable for automatic processing, e.g. to support search engines to restrict matches to docu-ments of a certain type or quality level.

Obsah

ČSN EN ISO 898-2 This document specifies the mechanical and physical properties of nuts made of non-alloy steel or alloy steel, when tested at the ambient temperature range of 10 °C to 35 °C. This document applies to nuts: - with ISO metric thread (see ISO 68-1), - with diameter/pitch combinations according to ISO 261 and ISO 262, - with coarse pitch thread M5 to M39, and fine pitch thread M8x1 to M39x3, - with thread tolerances according to ISO 965-1, ISO 965-2 or ISO 965-5, - with specified property classes 04, 05, 5, 6, 8, 10 and 12 including proof load, - of three different nut styles (see 5.1): regular nuts (style 1), high nuts (style 2) and thin nuts (style 0), - with a minimum outside diameter or width across flats s >= 1,45D, - able to mate with bolts, screws and studs with property classes in accordance with ISO 898-1 (see Annex B), and - intended to be used in applications ranging from -50 °C to +150 °C, or up to +300 °C. WARNING - Nuts conforming to the requirements of this document are tested at the ambient temperature range of 10 °C to 35 °C and are used in applications ranging from -50 °C to +150 °C; however, these nuts are also used outside this range and up to +300 °C for specific applications. It is possible that they do not retain the specified mechanical and physical properties at lower and/or elevated temperatures. Therefore, it is the responsibility of the user to determine the appropriate choices based on the service environment conditions of the assembly (see also 7.1). For additional specifications applicable to hot dip galvanized nuts, see ISO 10684. For nuts designed for particular applications, see ISO/TR 16224. This document does not specify requirements for functional properties such as: - prevailing torque properties (see ISO 2320), - torque/clamp force properties (see ISO 16047 for test method), - weldability, or - corrosion resistance.

Obsah

ČSN EN 125 EN 13611:2019, Clause 1 applies with the following modification and addition: Modification: The 1st paragraph of EN 13611:2019, Clause 1 is replaced by: This document specifies the safety, design, construction, and performance requirements and testing for thermoelectric flame supervision devices, energized by a thermocouple intended for use with burners and appliances burning one or more gaseous fuels, hereafter referred to as "controls". This document is applicable to controls with declared maximum inlet pressures up to and including 500 kPa and of nominal connection sizes up to and including DN 50. Addition: This document is not applicable to: - the thermocouple; - controls which use auxiliary energy (e.g. electrical energy supplied externally). The 4th paragraph of EN 13611:2019, Clause 1 is removed.