Kärnkraftanläggningar. Säkerhet

Kommittébeteckning: SIS/TK 405 (Kärnenergi)
Källa: ISO
Svarsdatum: den 13 jan 2023
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This document specifies the calibration methods under laboratory conditions for dosemeters used for environmental and area monitoring of X and gamma-rays with respect to the phantom-related operational quantities of the International Commission on Radiation Units and Measurements (ICRU).[1]
Three detector calibration methods are described in Clause 5 of this standard for 3 different situations:
ground level facilities with normal background levels (Subclause 5.2), ground level facilities with lower than normal background levels (Subclause 5.3) and underground facilities with lower than normal background levels (Subclause 5.4). Clause 6 discusses routine checks while Clause 7 is dedicated to the
calibration of environmental and area dosemeters that are fixed in place. These methods are based on free-in-air and simultaneous irradiation procedures, derived from those described in ISO 29661.
This document extends the dose rate range of ISO 4037-1 below 1,0 μSv h−1. The specific uncertainty components are described for these calibration methods. This standard does not deal with the special requirements for the calibration of spectrometer-based environmental dosemeters and the passive dosemeters.