BS EN 61577-3 pdf free download

BS EN 61577-3:2014 pdf free download.Radiation protection instrumentation — Radon and radon decay product measuring instruments.
This part of IEC 61 577 describes the specific requirements for instruments measuring the volumetric activity of airborne short-lived radon decay products and/or their ambient potential alpha-energy concentration outdoors, in dwellings, and in workplaces including underground mines.
This standard applies practically to all types of electronic instruments that are based on grab sampling, continuous sampling technique and electronic integrating measurement methods.
The measurement of activity retained by a sampling device, for example a filtering device, can be performed both during sampling or after the completion of a collection cycle. The different types of instrumentation used for measurements are stated in IEC 61 577-1 .
2 Normative references The following references are indispensable in applying this document. For dated references, only the cited edition applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 60050-394, International Electrotechnical Vocabulary (IEV) – Part 394: Nuclear instrumentation – Instruments, systems, equipment and detectors
IEC 60068-2-27, Environmental testing – Part 2-27: Tests – Test Ea and guidance: Shock
IEC 61 000-6-4, Electromagnetic compatibility (EMC) – Part 6-4: Generic standards – Emission standard for industrial environments
IEC 61 1 40, Protection against electric shock – Common aspects for installation and equipment
IEC 61 1 87, Electrical and electronic measuring equipment – Documentation
ISO/IEC Guide 98-3:2008, Uncertainty of measurement – Part 3: Guide to the expression of uncertainty in measurement (GUM:1 995) IEC 61577-1, Radiation protection instrumentation. Radon and radon decay product measuring instruments – Part 1: General principles
IEC 61577-4, Radon and radon decay product measuring instruments. Equipment for the production of reference atmospheres containing radon isotopes and their decay products (STAR)
3 Terms and definitions For the purposes of this document, the terms and definitions of IEC 60050-394 apply as well as the following:
3.1 conventionally true value of a quantity value attributed to a particular quantity and accepted, sometimes by convention, as having an uncertainty appropriate for a given purpose NOTE “Conventionally true value of a quantity” is sometimes called assigned value, best estimate of the value, conventional value or reference value. [IEC 60050-394:2007, 394-40-1 0]
3.2 rated range range of a quantity to be measured, observed, supplied, or set, assigned to the instrument [IEC 60050-394:2007, 394-39-42]
3.3 error (of measurement) result of a measurement minus a true value of the measurand NOTE 1 Since a true value cannot be determined, in practice a conventionally true value is used. NOTE 2 When it is necessary to distinguish “error” from “relative error”, the former is sometimes called “absolute error of measurement”. This should not be confused with “absolute value of error”, which is the modulus of the error. [IEC 60050-394:2007, 394-40-1 3]
3.4 relative error error of measurement divided by a true value of the measurand NOTE Since a true value cannot be determined, in practice a conventionally true value is used. [IEC 60050-394:2007, 394-40-1 1 ]
3.5 intrinsic error error of a measuring instrument, determined under reference conditions [IEC 60050-394:2007, 394-40-1 2] 3.6 response (of a radiation measuring assembly) ratio, under specified conditions, given by the relation :
where ν is the value measured by the equipment or assembly under test and conventionally true value of this quantity. ν is the c NOTE 1 The input signal to a measuring system may be called the stimulus; the output signal may be called the response (IVM).
NOTE 2 Response can have several definitions. As an example, the definition of the response of a radiation measuring assembly is given. [IEC 60050-394:2007, 394-40-21 ]
3.7 reference response response of the assembly under reference conditions to a reference dose rate or activity expressed as:where V is the value measured by the equipment or assembly under test and V is the conventionally true value of the reference source.BS EN 61577-3 pdf download.