Norm

ISO/DIS 4037-3:2017 en

X and gamma reference radiation for calibrating dosemeters and doserate meters and for determining their response as a function of photon energy -- Part 3: Calibration of area and personal dosemeters and the measurement of their response as a function of energy and angle of incidence

  • Deze norm is niet direct leverbaar vanuit de NEN-shop.
    Wilt u dit product bestellen neemt u dan contact op met NEN-klantenservice: (015) 2 690 391 of klantenservice@nen.nl

Over deze norm

Status Ontwerp
Aantal pagina's 77
Commissie Radioactiviteit - Toepassing en meten
Gepubliceerd op 01-04-2017
Taal Engels
This part 3 of ISO 4037 specifies additional procedures and data for the calibration of dosemeters and doserate meters used for individual and for area monitoring in radiation protection. The general procedure for the calibration and the determination of the response of radiation protection dose(rate)meters is described in ISO 29661 and is followed as far as possible. For this purpose the photon reference radiation fields with mean energies between 8 keV and 9 MeV, as specified in ISO 4037-1, are used. For individual monitoring, both whole body and extremity dosemeters are covered and for area monitoring, both portable and installed dose(rate)meters are covered. Charged particle equilibrium is required for the reference fields although this is not always established in the workplace fields for which the dosemeter shall be calibrated, especially at high photon energies. The meaning of high photon energies depend on the definition depth in the phantom. Electrons of energies above 65 keV, 0,75 MeV and 2,1 MeV can just penetrate 0,07 mm, 3 mm and 10 mm of ICRU tissue, respectively, and the radiation qualities with photon energies above these values are considered as high photon energies for the quantities define in these depths. This part 3 of ISO 4037 also deals with the determination of the response as a function of photon energy and angle of radiation incidence. Such measurements may represent part of a type test in the course of which the effect of further influence quantities on the response is examined. This part 3 of ISO 4037 is only applicable for air kerma rates of and above 1 μGy/h. This part 3 of ISO 4037 does not cover the in-situ calibration of fixed installed area dosemeters. The procedures to be followed for the different types of dosemeters are described. Recommendations are given on the phantom to be used and on the conversion coefficients to be applied. Recommended conversion coefficients are only given for matched reference radiation fields, which are specified in the clauses 4 to 6 of the second edition of ISO 4037-1. The first edition of ISO 4937-1, issued in 1996, includes some additional radiation qualities for which such published information is not available. These are fluorescent radiations, the gamma radiation of the radionuclide 241Am, S-Am, and the high energy photon radiations R-Ti and R-Ni. The most used radiations, the fluorescent radiations and the gamma radiation of the radionuclide 241Am, S-Am, are included nearly unchanged in the informative Annexes A and B of ISO 4037-1 Ed.2. The informative Annex C of the second edition of ISO 4034-1 gives additional X radiation fields, which are specified by the quality index. For all these radiation qualities, conversion coefficients are given in the informative Annexes A to C of this standard, but only as a rough estimate as the overall uncertainty of these conversion coefficients in practical reference radiation fields is not known.

Details

ICS-code 17.240
Nederlandse titel X and gamma reference radiation for calibrating dosemeters and doserate meters and for determining their response as a function of photon energy -- Part 3: Calibration of area and personal dosemeters and the measurement of their response as a function of energy and angle of incidence
Engelse titel X and gamma reference radiation for calibrating dosemeters and doserate meters and for determining their response as a function of photon energy -- Part 3: Calibration of area and personal dosemeters and the measurement of their response as a function of energy and angle of incidence
Vervangt

Winkelwagen

Subtotaal:

Ga naar winkelwagen