Occupational Intakes of Radionuclides Part 1 - ICRP

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DRAFT REPORT FOR CONSULTATION
Reference level
In emergency or existing controllable exposure situations, this represents the
level of dose or risk, above which it is judged to be inappropriate to plan to
allow exposures to occur, and below which optimisation of protection should
be implemented. The chosen value for a reference level will depend upon the
prevailing circumstances of the exposure under consideration.
Reference male and reference female (reference individual)
An idealised male or female with characteristics defined by the ICRP for the
purpose of radiological protection, and with the anatomical and physiological
characteristics defined in ICRP Publication 89 (ICRP, 2002).
Reference person
An idealised person, for whom the equivalent doses in organs and tissues are
calculated by averaging the corresponding doses of the Reference Male and
Reference Female. The equivalent doses of the Reference person are used for
the calculation of the effective dose.
Reference phantom
The computational phantom of the human body (male or female voxel
phantom based on medical imaging data, defined in ICRP Publication 110
(ICRP, 2009) with the anatomical and physiological characteristics defined in
ICRP Publication 89 (ICRP, 2002).
Reference Worker
An adult Reference Person associated with the reference biokinetic,
anatomical and physiological characteristics assigned in this report series. The
definition of the Reference Worker includes the structure and parameter values
of the reference systemic biokinetic models, HATM, HATM, and dosimetric
models and is invariant on sex, age and other individual-specific
characteristics. The average breathing rate of the Reference Worker is 1.2 m 3
h -1 during the 8 h working day, which corresponds to the daily intake of 9.6 m 3
(Publication 66, ICRP, 1994a).
Reference value
The value of a parameter, factor or quantity that is regarded as valid for use in
dosimetric calculations and recommended by ICRP. To prevent accumulation
of error in successive calculations, the reference values are sometimes
expressed with higher precision than data would support..
Sievert (Sv)
The special name for the SI unit (J kg -1 ) of equivalent dose and effective dose.
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