Normy

Obsah

ČSN EN 13814-2+A1 This document specifies the minimum requirements necessary to ensure the safe maintenance, operation, inspection and testing of amusement ride and amusement devices which are intended to be installed both repeatedly without degradation or loss of integrity, and temporarily or permanently in fairgrounds and amusement parks or any other locations. Grandstands, construction site installations, scaffolding, removable agricultural structures, simple coin operated children's amusement devices, carrying up to three children, and recreational devices like waterslides or summer toboggan runs, playground equipment, rope courses, climbing wall, inflatable, trampolines, swimming pool equipment (this list is not exhaustive) are not covered by this document. In terms of workers' health and safety, national regulations apply.

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ČSN EN ISO 24478 This document defines terms for brakes and braking in rolling stock.

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ČSN EN IEC 62282-8-201 ed. 2 This part of IEC 62282 defines the evaluation methods of typical performances for electric energy storage systems using hydrogen. It is applicable to the systems that use electrochemical reaction devices for both power charge and discharge. This document applies to systems that are designed and used for service and operation in stationary locations (indoor and outdoor).

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ČSN EN IEC 61788-23 ed. 3 This part of IEC 61788 addresses a test method for the determination of the residual resistance ratio (RRR), rRRR, of cavity-grade niobium. This method is intended for high-purity niobium grades with 150 < rRRR < 600. The test method is valid for specimens with rectangular or round cross-section, cross-sectional area greater than 1 mm2 but less than 20 mm2, and a length not less than 10 nor more than 25 times the width or diameter.

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ČSN EN IEC 61169-69 This part of IEC 61169, which is a sectional specification (SS), provides information and rules for the preparation of detail specifications (DS) for RF coaxial connectors with push-on coupling, typically for use in 50 Ohm RF cables or micro-strips in microwave, telecommunication, wireless systems, and other fields (SMP3). It specifies mating face dimensions for general purpose connectors - grade 2, dimensional details of standard test connectors-grade 0, gauging information and tests selected from IEC 61169-1, applicable to all detail specifications relating to series SMP3 RF connectors. This specification indicates recommended performance characteristics to be considered when writing a detail specification and it covers test schedules and inspection requirements for assessment levels M and H. The SMP3 push-on coupling structure series RF coaxial connectors with the characteristic of normative impedance 50 Ohm are used with various kinds of RF cables or micro-strips in microwave, telecommunication, wireless systems, and other fields. The operating frequency limit is up to 65 GHz.

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ČSN EN IEC 62271-214 ed. 2 Tato část IEC 62271 specifikuje požadavky na třídy odolnosti proti vnitřnímu oblouku u střídavých kovových krytých stožárových rozváděčů o jmenovitých napětích nad 1 kV a do 52 kV včetně s provozními kmitočty do 60 Hz včetně. Tento dokument platí pro třífázová, dvoufázová a jednofázová zařízení s nekrytými připojovacími svorkami, kterým je přiřazena třída odolnosti proti vnitřnímu oblouku. Kryty mohou obsahovat pevné a odnímatelné součásti a mohou být pro zajištění izolace plněny tekutinou (kapalinou nebo plynem). Tento dokument nevylučuje, že ve stejném krytu může být zahrnuto další zařízení. V takovém případě je třeba vzít v úvahu jakýkoli možný vliv tohoto zařízení na rozváděč.

Obsah

ČSN EN IEC 60793-1-45 ed. 3 Norma stanoví jednotné požadavky pro měření průměru vidového pole (MFD) jednovidových optických vláken, a tím pomáhá při kontrole vláken a kabelů pro komerční účely. Norma obsahuje normativní přílohy A, B, C a D se specifickými požadavky k jednotlivým metodám (metoda A, B, C a D) a informativní přílohu E uvádějící soubory vzorových dat a vypočtených hodnot.

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ČSN EN IEC 60793-1-41 ed. 4 Norma popisuje tři metody (metoda A - měření v časové oblasti (zkreslení impulzu); metoda B - měření v kmitočtové oblasti; metoda C - přebuzená vidová šířka pásma vypočtená z diferenciálního zpoždění vidů (OMBc)) pro stanovení a měření vidové šířky pásma mnohovidových optických vláken (viz soubory norem IEC 60793-2-10, IEC 60793-2-30 a IEC 60793-2-40). Kmitočtová odezva základního pásma je přímo měřena v kmitočtové oblasti určením odezvy vlákna na sinusově modulovaný zdroj světla. Odezvu základního pásma lze také měřit pozorováním rozšíření úzkého impulzu světla. Vypočtená odezva je určena pomocí dat z diferenciálního zpoždění vidů (DMD). Metodu A a metodu B lze provést jedním ze dvou způsobů buzení: přebuzením (OFL) nebo buzením s omezením vidů (RML). Metoda C je definována pouze pro mnohovidová vlákna A1-OM3 až A1-OM5 a používá vážený součet odezvy buzení DMD s váhami odpovídajícími podmínkám přebuzení. Odpovídající zkušební metoda a podmínka buzení se vybírá podle typu vlákna.

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ČSN EN 17450-2 (38 9261) This document specifies product characteristics and test methods of open nozzles and automatic nozzles for use in water mist systems. NOTE - All pressure data in this document are given as gauge pressures in bar.

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ČSN EN ISO 20045 This document describes a test method to determine the activity concentration of atmospheric tritium by trapping tritium in air by bubbling through a water solution. Atmospheric tritium activity concentration levels are expressed in becquerel per cubic metre (Bq.m-3). The formulae are given for a sampling system with four bubblers. They can also be applied to trapping systems with only one trapping module consisting of two bubblers if only tritiated water vapour (HTO) is in the atmosphere to be sampled. This document does not cover laboratory test sample results, in becquerel per litre of trapping solution, according to ISO 9698 or ISO 13168. The test method detection limit result is between 0,2 Bq.m-3 and 0,5 Bq.m-3 when the sampling duration is about one week.

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ČSN EN ISO 18589-2 This document specifies the general requirements, based on ISO 11074 and ISO/IEC 17025, for all steps in the planning (desk study and area reconnaissance) of the sampling and the preparation of samples for testing. It includes the selection of the sampling strategy, the outline of the sampling plan, the presentation of general sampling methods and equipment, as well as the methodology of the pre-treatment of samples adapted to the measurements of the activity of radionuclides in soil including granular materials of mineral origin which contain NORM or artificial radionuclides, such as sludge, sediment, construction debris, solid waste of different type and materials from technologically enhanced naturally occurring radioactive materials (mining, coal combustion, phosphate fertilizer production etc.). For simplification, the term "soil" used in this document covers the set of elements mentioned above. This document is addressed to the people responsible for determining the radioactivity present in soil for the purpose of radiation protection. It is applicable to soil from gardens, farmland, urban, or industrial sites, as well as soil not affected by human activities. This document is applicable to all laboratories regardless of the number of personnel or the range of the testing performed. When a laboratory does not undertake one or more of the activities covered by this document, such as planning, sampling, test or calibration, the corresponding requirements do not apply.

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ČSN EN ISO 9271 This document applies to the testing of the decontamination of textiles, which are contaminated by radioactive materials. The test method describes the technique to assess the efficiency of decontamination agents (see ISO 7503-1 and ISO 7503-3). This document applies to the testing of detergents, which may be used in aqueous solutions for the purpose of cleaning radioactively contaminated textiles. The radionuclides used in this test are those commonly found in the nuclear industry (60Co and 137Cs or 134Cs) in aqueous form. The test can also be adapted for use with other radionuclides and other chemical forms, depending on the customer requirements, if the solutions are chemically stable and do not damage the test specimen. The test method is not suitable if the radionuclide emits low energy gamma rays, like 55Fe, or low energy beta or alpha particles that are readily attenuated in the textile fabrics, or if the nuclide has a chemical or isotopic interaction with the detergent used in the method (e.g. tritium which could be in several chemical forms). The test method does not apply to the testing of the ability of detergents to remove non-radioactive dirt.