ISO 6980-2:2004

Nuclear energy — Reference beta-particle radiation — Part 2: Calibration fundamentals related to basic quantities characterizing the radiation field ISO 6980-2:2004

Publication date:   Oct 6, 2004

95.99 Withdrawal of Standard   Nov 1, 2022

General information

95.99 Withdrawal of Standard   Nov 1, 2022

ISO

ISO/TC 85/SC 2 Radiological protection

International Standard

17.240   Radiation measurements

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Scope

ISO 6980-2:2004 specifies methods for the measurement of the directional absorbed-dose rate in a tissue-equivalent slab phantom in the ISO 6980 reference beta-particle radiation fields. The energy range of the beta-particle-emitting isotopes covered by these reference radiations is 0,066 to 3,54 MeV (maximum energy). Radiation energies outside this range are beyond the scope of this standard. While measurements in a reference geometry (depth of 0,07 mm at perpendicular incidence in a tissue-equivalent slab phantom) with a reference class extrapolation chamber are dealt with in detail, the use of other measurement systems and measurements in other geometries are also described, although in less detail. The ambient dose equivalent, H*(10) as used for area monitoring of strongly penetrating radiation is not an appropriate quantity for any beta radiation, even for that penetrating a 10 mm thick layer of ICRU tissue (i.e. Emax greater than 2 MeV). If adequate protection is provided at 0,07 mm, only rarely will one be concerned with other depths, for example 3 mm.
ISO 6980-2:2004 is geared towards organizations wishing to establish reference-class dosimetry capabilities for beta particles, and serves as a guide to the performance of dosimetry with the reference class extrapolation chamber for beta-particle dosimetry in other fields. Guidance is also provided on the statement of measurement uncertainties.

Life cycle

PREVIOUSLY

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ISO 6980:1996

NOW

WITHDRAWN
ISO 6980-2:2004
95.99 Withdrawal of Standard
Nov 1, 2022

REVISED BY

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ISO 6980-2:2022