Metrologi och mätning. Fysikaliska fenomen

Kommittébeteckning: SIS/TK 405 (Kärnenergi)
Källa: ISO
Svarsdatum: den 28 jul 2021
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This document specifies the characteristics of solid, liquid or gas of gamma emitting radionuclides reference measurement standards used for the calibration of gamma-ray spectrometers. These reference measurement standards are traceable to national measurement standards.
This document does not describe the procedures involved in the use of these reference measurement standards for the calibration of gamma-ray spectrometers. Such procedures are specified in ISO 20042 and other documents.
This document specifies recommended reference radiations for the calibration of gamma-ray spectrometers. This document covers, but is not restricted to, gamma emitters which emit photons in the energy range of 20 keV to 2 000 keV. These reference radiations are realized in the form of point sources or adequately extended sources specified in terms of activity which are traceable to national standards.
Liquid standards that are intended to be used for preparing extended standards by the laboratories are also in scope of this document. Reference materials (RMs) produced in accordance with ISO 17034 [2] are out of scope of this document.

Ämnesområden: Strålningsmätning
Kommittébeteckning: SIS/TK 405 (Kärnenergi)
Källa: ISO
Svarsdatum: den 28 jul 2021
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1.1 This is a practice for using a radiochromic optical waveguide dosimetry system to measure absorbed dose in materials irradiated by photons and high energy electrons in terms of absorbed dose to water. The radiochromic optical waveguide dosimetry system is generally used as a routine dosimetry system.
1.2 The optical waveguide dosimeter is classified as a Type II dosimeter on the basis of the complex effect of influence quantities (see ISO/ASTM Practice 52628).
1.3 This document is one of a set of standards that provides recommendations for properly implementing dosimetry in radiation processing, and describes a means of achieving compliance with the requirements of ISO/ASTM 52628 for an optical waveguide dosimetry system. It is intended to be read in conjunction with ISO/ASTM Practice 52628.
1.4 This practice applies to radiochromic optical waveguide
dosimeters that can be used within part or all of the specified
ranges as follows:
1.4.1 The absorbed dose range is from 1 to 20 000 Gy.
1.4.2 The absorbed dose rate is from 0.001 to 1000 Gy/s.
1.4.3 The radiation photon energy range is from 1 to 10
MeV.
1.4.4 The radiation electron energy range is from 3 to 25
MeV.
1.4.5 The irradiation temperature range is from –78 to
+60°C.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accordance
with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Kommittébeteckning: SIS/TK 424 (Kemiska vattenundersökningar)
Källa: CEN
Svarsdatum: den 10 aug 2021
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Kommittébeteckning: SIS/TK 110 (Akustik och buller)
Källa: ISO
Svarsdatum: den 10 sep 2021
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This document specifies an engineering method for measuring the noise emitted by road vehicles of categories M and N under typical urban traffic conditions. It excludes vehicles of category L1 and L2, which are covered by ISO 9645, and vehicles of category L3, L4, and L5, which are covered by ISO 362-2.
The specifications are intended to reproduce the level of noise generated by the principal noise sources during normal driving in urban traffic (see Annex A).
The method is designed to meet the requirements of simplicity as far as they are consistent with reproducibility of results under the operating conditions of the vehicle.
The test method requires an acoustical environment that is obtained only in an extensive open space. Such conditions are usually provided for
— type approval measurements of a vehicle,
— measurements at the manufacturing stage, and
— measurements at official testing stations.
NOTE 1 The results obtained by this method give an objective measure of the noise emitted under the specified conditions of test. It is necessary to consider the fact that the subjective appraisal of the noise annoyance of different classes of motor vehicles is not simply related to the indications of a sound measurement system. As annoyance is strongly related to personal human perception, physiological human conditions, culture, and environmental conditions, there is a large variation and it is, therefore, not useful as a parameter to describe a specific vehicle condition.
NOTE 2 Spot checks of vehicles chosen at random are rarely made in an ideal acoustical environment. If measurements are carried out on the road in an acoustical environment that does not fulfil the requirements stated
in this document, the results obtained can deviate appreciably from the results obtained using the specified conditions.

Kommittébeteckning: SIS/TK 111 (Vibration och stöt)
Källa: ISO
Svarsdatum: den 16 sep 2021
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This document provides guidelines for the assessment of torsional natural frequencies and component strength, under normal operating conditions, for the coupled shaft train, including long rotor blades, of steam and gas turbine generator sets. In particular, the guidelines apply to the torsional responses of the coupled shaft train at grid and twice grid frequencies due to electrical excitation of the electrical network to which the turbine generator set is connected. Excitation at other frequencies (e.g. subharmonic frequencies) are not covered in this document.
No guidelines are given regarding the torsional vibration response caused by steam excitation or other excitation mechanisms not related to the electrical network.
Where the shaft cross sections and couplings do not fulfil the required strength criteria and/or torsional natural frequencies do not conform with defined frequency margins, other actions shall be defined to resolve the problem.
The requirements included in this document are applicable to
a) steam turbine generator sets connected to the electrical network; and
b) gas turbine generator sets connected to the electrical network.
Methods currently available for carrying out both analytical assessment and test validation of the shaft train torsional natural frequencies are also described.
NOTE Radial (lateral, transverse) and axial vibration of steam and/or gas turbine generator sets is dealt with in ISO 20816-2.

Kommittébeteckning: SIS/TK 111 (Vibration och stöt)
Källa: SIS
Svarsdatum: den 23 sep 2021
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Detta dokument specificerar en metod för mätning av vibrationer i byggnader i syfte att bedöma i vilken omfattning människor påverkas.
Detta dokument specificerar även krav på mätsystem.
Detta dokument är inte tillämpbart för bedömning av byggnads- och konstruktionsskador. Dokumentet ger en vägledning för vibrationers påverkan på människor.