BS IEC 60846-2:2015 pdf free download

BS IEC 60846-2:2015 pdf free download.Radiation protection instrumentation – Ambient and/or directional dose equivalent (rate) meters and/or monitors for beta, X and gamma radiation. All indicated dose values shall be corrected for non-linear response and, if necessary, for the effect of the influence quantity dose rate. Where more than one detector is utilized, then these requirements shall apply to each detector. NOTE The range of the response —29 % to ÷67 % corresponds to the range of the correction factor 1,00 ± 0.40, The range of the response —37.5 % to 150% corresponds to the range of the correction factor 1,00 ± 0,60. 8.4.3.3 Method of test The tests with X-rays should be performed using the narrow-spectrum series of radiation qualities of ISO 4037-1, however if very high dose rates are required, the wide-spectrum series or high air kerma rate series may be required. In order to minimize the number of measurements, in a first step the minimum rated photon energy is determined where both requirements on energy and angular dependence of response are met: • The energy dependence of response for angles of incidence of a = 0° normalized to its value at ‘37Cs gamma energy, R(E. 0°), is measured and plotted versus the photon energy at the points of the mean energies (fluence weighted) of the used X-ray spectra, E. • The photon energy where the variation of the relative response falls outside —29 % to +67 % (for 80 keV up to 1,5 MeV) or outside —37,5% to +150 % (for 1,5 MeV up to 7 MeV) is determined. • For the radiation quality with the mean energy above the lower photon energy thus determined, the relative response is measured for all angles between 0° and 180° at 15° intervals in two perpendicular planes containing the reference direction through the reference point of the dose equivalent (rate) meter. — If for this radiation quality, all variations of the relative response are between —29 % to +67% (for 80 keV up to 1,5 MeV and 0° to ±60° and 180° to (180°±60°)) and between —37,5 % to *150 % (for 80 keV up to 1,5 MeV and ±60° to ±120°; however at 90° the variation of the relative response is allowed to be as low as —50 %) and between —37,5 % to 150 % (for 1,5 MeV up to 7 MeV and 0° to ±60° and 180°...