Volume 2 - Atomic Energy Regulatory Board

a manner that provides adequate protection to the health and safety of the workers, the
public and the environment.
Decontamination
The removal or reduction of contamination by a physical or chemical means .
Disposal
The emplacement of a waste in a repository without the intention of retrieval or the
approved direct discharge of waste into the environment with subsequent dispersion.
Dose
A measure of the radiation absorbed by a target. The quantities termed absorbed dose,
organ dose, equivalent dose, effective dose, committed equivalent dose or committed
effective dose are used, depending on the context. The modifying terms are used when
they are not necessary for defining the quantity of interest.
Dosimeter
A device, instrument or system, which can be used to measure or evaluate any quantity
that can be related to the determination of either absorbed dose or equivalent dose.
Dosimetry
Measurements and/or calculations performed in connection with the determination of
radiation dose and/or dose distributions in the irradiated volume.
Employer
Any person with recognised responsibility, commitment and duties towards a worker
in his or her employment by virtue of a mutually agreed relationship. (A self-employed
person is regarded as being both a worker and employer).
Enclosed Installation
In case of industrial radiography any installation in which radiography operations are
carried out in an enclosure which has walls providing adequate radiation protection to
persons working outside the enclosure, and which prevents unauthorised entry of
persons into the enclosure during radiography operations. Such installations may include
open top installations also.
Ethical Review Committee
A committee of independent, qualified persons to advise on the conditions of exposure
and the dose constraints to be observed for individuals exposed for biomedical research
when there is no direct benefit to the exposed individual.
Fluoroscopy
The technique of imaging by using a fluorescent screen.
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