ISO 12749-2:2013 pdf download.Nuclear energy, nuclear technologies,and radiological protection一Vocabulary一Part 2:Radiological protection.
This part of Iso 12749 lists unambiguous terms and definitions related to radiological protection concepts in the subject field of nuclear energy. It is intended to facilitate communication and promote common understanding.
1 General terms related to radiological protection
1.1
radiological protection radiation protection
protection of people and the environment from the harmful effects of exposure to ionizing radiation and the means for achieving such protection
[SOURCE: IAEA Safety Glossary Terminology Used in Nuclear Safety and Radiation Protection — 2007 Edition, modified — By adding “and the environment”.]
1.1.1
radiation source
anything (apparatus, substance, installation) that may cause radiation exposure, such as by emitting ionization radiation or releasing radioactive substances or materials
[SOURCE: ISO 14152:2001]
1.1.1.1
radioactivity
stochastic process whereby nuclei undergo spontaneous disintegration, usually accompanied by the emission of subatomic particles, or photons
[SOURCE: IAEA Safety Glossary Terminology Used in Nuclear Safety and Radiation Protection — 2007 Edition, modified — By deleting “random” between “spontaneous” and “disintegration”.]
1.1.1.1.1
radioactive material
material of which one or more constituents exhibit radioactivity (1.111)
Note 1 to entry: For special purposes such as regulation, this term may be restricted to radioactive material (1.1.1.1.1) with an activity or a specific activity greater than a specified value.
[SOURCE: ISO 92 1:1997]
1.1.1.1.1.1
radioactive contamination
radioactive substances on surfaces, or within solids, liquids, or gases (including the human body), where their presence is unintended or undesirable, or the process giving rise to their presence in such places
[SOURCE: IAEA Safety Glossary Terminology Used in Nuclear Safety and Radiation Protection —2007 Edition]
1.1.1.1.1.1.1
surface contamination
radioactive material (11.1.1,1) deposited on surfaces of facilities (floor surface, work bench tops, machines, etc.), equipment, or personnel
1.1.2
equilibrium equivalent radon concentration
concentration of radon in air, in equilibrium with its short-lived decay products, which would have the same potential alpha energy concentration as the existing non-equilibrium mixture
[SOURCE: UNSCEAR 2006, Appendix E]
1.1.2.1
equilibrium factor
ratio of the equilibrium equivalent concentration of radon to the actual radon concentration
[SOURCE: IAEA Safety Glossary Terminology Used in Nuclear Safety and Radiation Protection —2007 Edition]
1.1.3
justification
process of determining for a planned exposure situation whether a practice is, overall, beneficial or for an emergency exposure situation or an existing exposure situation whether a proposed protective action or remedial action is likely, overall, to be beneficial
[SOURCE: Radiation Protection and Safety of Radiation Sources: International Basic Safety Standards – Interim Edition IAEA Safety Standards Series GSR Part 3, 2011]
1.1.4
optimization of protection
process of determining what level of protection and safety makes exposures, and the probability ana magnitude of potential exposures, as low as reasonably achievable, economic and societal factors being taken into account
[SOURCE: ICRP 103, modified — By adding “as low as reasonably achievable, economic and societal factors being taken into account” at the end.]ISO 12749-2pdf download.