User contributions
10 June 2019
ICRP Glossary
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Special (non-routine) monitoring
Created page with "Monitoring designed to investigate a specific situation in the workplace for which further information is needed. It can be individual monitoring or workplace monitoring. Note..."
South Atlantic anomaly
Created page with "An area where the radiation belt, and hence the trapped protons, comes closer to the Earth’s surface due to a displacement of the magnetic dipole axes from the Earth's centr..."
Source term
Created page with "Amount, isotopic composition, physical and chemical form of radioactive materials used for calculating radiation exposure, expressed as total activity or activity concentratio..."
Source-related
Created page with "Of, or relating to, a specified source of radiation. It is contrasted with another term, “individual related”. Note: Source-related assessment is a phrase used when the a..."
Solar wind
Created page with "The solar wind is a plasma of electrons, protons, and alpha particles that boils off the solar corona and propagates – due to the Sun’s magnetic field – radially from th..."
Solar particle event
Created page with "An eruption at the Sun’s surface that releases a large number of particles (mainly electrons and protons with less helium ions and heavy charged particles) over the course o..."
Solar cycle
Created page with "Variation of the solar activity between two extremes with a cycle time of approximately 11 years. The solar activity can be described by the number of observed sunspots. (IC..."
Safety culture
Created page with "Assembly of characteristics and attitudes in organizations and individuals which establishes that, as an overriding priority, issues relating to protection and safety receive..."
Safety case
Created page with "A structured set of arguments and evidence demonstrating the safety of a system. More specifically, a safety case aims to show that specific targets and criteria are met. (I..."
ICRP Glossary
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Rigidity threshold
Created page with "For each point inside the Earth´s magnetosphere and each direction from that point, there exists a rigidity threshold below which the cosmic particles are not able to reach t..."
Reversibility
Created page with "The ability, in principle, to reverse or reconsider decisions taken during the progressive implementation of a disposal system; reversal is the concrete action of overturning..."
Retrievability
Created page with "The ability, in principle, to recover waste or entire waste packages once they have been emplaced in a repository. Retrievability implies making provisions in order to allow r..."
Remedial action
Created page with "The removal of a source or the reduction of its magnitude (in terms of activity or amount) for the purposes of preventing or reducing exposures that might otherwise occur in a..."
ICRP Glossary
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Relocation
Created page with "The non-urgent removal or extended evacuation of people to avoid long term exposure from deposited radioactive material. Relocation is considered to be permanent (sometimes te..."
ICRP Glossary
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Recovery responder
Created page with "Any individual recognized as being involved in the recovery process after a nuclear accident or radiological event. Note: Recognition is likely to be from organization respons..."
Radiological protection principles
Created page with "A set of principles that apply equally to all exposure situations: the principle of justification, the principle of optimisation of protection, and the principle of applicatio..."
Radioactive dispersion device
Created page with "A device designed with malicious intent to spread radioactive material in the public domain. ''ICRP Glossary entry - May 2019''"
ICRP Glossary
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Radiation worker
Created page with "A radiation worker is an occupationally exposed individual. Note that the term is often applied to the subset of occupationally exposed individuals for which their exposure i..."
ICRP Glossary
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ICRP Glossary
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Radiation belt
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Radiation belt
Redirected page to Magnetosphere
Qualified expert
Created page with "An individual who, by virtue of knowledge, training and certification by appropriate boards or societies, professional licences or academic qualifications and experience, is d..."
Prevailing circumstances
Created page with "The conditions and factors that could or should be taken into account when making radiological protection decisions. They include a wide range of radiological and non-radiolog..."
Potential exposure
Created page with "Exposure that is not expected to occur with certainty but may result from an accident or malicious act at a source, or an event or sequence of events of a probabilistic nature..."
Pelagic
Created page with "Pertaining to fauna and flora that live near the surface of the sea, lake or river. (Adapted from ICRP Publication 124, 2014) ''ICRP Glossary entry - May 2019''"
ICRP Glossary
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Oversight
Created page with "The state in which society ‘keeps a watchful eye’ on authorised activity to ensure that plans and decisions are implemented and working properly. It is an important aspect..."
Orphan source
Created page with "A radioactive source that is not under regulatory control, either because it has never been under regulatory control, or because it has been abandoned, lost, misplaced, stolen..."
Optimisation
Created page with "The process of determining what level of protection and safety makes exposures, and the probability and magnitude of potential exposures, as low as reasonably achievable with..."
ICRP Glossary
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Occupational exposure
Created page with "Radiation exposure incurred at work as a result of situations that can reasonably be regarded as being the responsibility of the operating management. ([[ICRP Publication 103]..."
ICRP Glossary
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Naturally occurring radioactive material
Created page with "Material containing no significant amounts of radionuclides other than naturally occurring radionuclides, that may be raw material or material in which the activity concentrat..."
Mitigation
Created page with "Actions to reduce the risk or severity of consequences of radiation effects, applied during or shortly after exposure. (Adapted from ICRP Publication 118, 2012) ''ICRP..."
Member of the public
Created page with "Any individual who receives an exposure that is neither occupational nor medical. (ICRP Publication 103, para 191) ''ICRP Glossary entry - May 2019''"
Magnetosphere
Created page with "The Earth’s magnetic dipole field that extends over a distance from Earth up to approximately 75,000 km around the geomagnetic equator. Charged particles in a specific energ..."
Low Earth orbit
Created page with "Orbit in space near to the Earth where astronauts are protected against parts of particles of galactic and solar origin by the Earth’s magnetic field. The shielding depends..."
Low level waste
Created page with "Radioactive waste that may include high levels of activity concentration of short-lived radionuclides but only relatively low levels of activity concentration of long-lived ra..."
ICRP Glossary
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ICRP Glossary
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Kp index
Created page with "Index quantifying disturbances in the horizontal component of the Earth's magnetic field with a number in the range 0–9, with 1 being calm and ≥5 indicating a geomagnetic..."
Justification
Created page with "The process of determining whether: (i) a planned activity involving radiation is beneficial overall (i.e. whether the benefits to individuals and to society from introducing..."
Itinerant (radiation) worker
Created page with "An occupationally exposed individual who works in supervised areas or controlled areas at various locations and who is not an employee of the management of the facility where..."
ICRP Glossary
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