Metrologi og måling. Fysiske fenomener

Komité: ISO/TC 113/SC 1 (Velocity area methods)
Opprinnelse:
Sluttdato: 1. okt 2018
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Komité: CEN/TC 256 (Railway applications)
Opprinnelse:
Sluttdato: 25. okt 2018
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This European standard describes the type test assessment method for acoustic signals at passenger external doors applying to rolling stock. The following applies to this standard: - this standard refers to acoustical passenger information indicating the release, opening and closing of passenger doors; - this standard is applicable to tonal signals with defined frequency components; - this standard is not applicable to spoken information. NOTE 1 Acoustic door signals in terms of TSI compliance are defined in EN 16584-2 "Design for PRM use". NOTE 2 Acoustic doors signals in terms of door system function are described in EN 14752.
Komité: CEN/TC 230 (Water analysis)
Opprinnelse:
Sluttdato: 26. okt 2018
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This procedure specifies a method for the determination of 228Ra activity in drinking waters by radium extraction, purification and liquid scintillation counting.
Komité: ISO/TC 85/SC 2 (Radiological protection)
Opprinnelse:
Sluttdato: 7. nov 2018
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Komité: CEN/TC 126 (Acoustic properties of building elements and of buildings)
Opprinnelse:
Sluttdato: 15. nov 2018
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This document: - specifies methods for the measurement of airborne and structure-borne sound produced in waste water and rain water installations under laboratory conditions; - defines the expression of the results. It is applicable to waste water piping systems and parts thereof, but not to the actual sources of the wastewater, e.g. lavatories, toilets and bathtubs or any active units. It applies to pipes with natural ventilation and made of any common material in commonly used diameters (up to 150 mm). The results obtained can be used for the comparison of products and materials. It may serve in estimating the behaviour of waste water systems in a building under certain conditions. Nevertheless, this standard does not provide a normalized procedure for calculating the acoustical properties of such installations in a building. This revision will also consider the effect of an enclosure.