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Fiche 3,  Justifications,  Anglais

Record number: 3, Textual support number: 1 DEF

The principle generally accepted in radiation protection that radiation exposures and releases of radioactive materials should be as low as reasonably achievable, taking social and economic factors into account.  2, fiche 3, Anglais, - as%20low%20as%20reasonably%20achievable

Record number: 3, Textual support number: 1 CONT

ALARA is an acronym for the phrase As Low As Reasonably Achievable. It is most often used in reference to chemical or radiation exposure levels.... ALARA is not simply a phrase, but a work principle, a mindset, a culture of professional excellence. In an ideal world, one could reduce his exposure to hazardous materials to zero. In reality, reducing an exposure to zero is not always possible; certain social, technical, economic, practical, or public policy considerations will result in a small but acceptable level of risk. The best way to prevent this risk from increasing is to keep one's exposure ALARA.  3, fiche 3, Anglais, - as%20low%20as%20reasonably%20achievable

Record number: 3, Textual support number: 1 PHR

ALARA approach, concept, level, policy, practice, principle, procedure, program.  4, fiche 3, Anglais, - as%20low%20as%20reasonably%20achievable

Record number: 3, Textual support number: 2 PHR

To exceed an ALARA level, to keep exposure levels ALARA, to maintain exposures ALARA.  4, fiche 3, Anglais, - as%20low%20as%20reasonably%20achievable

Record number: 3, Textual support number: 1 OBS

See also "ALARA level, ""ALARA principle. "  4, fiche 3, Anglais, - as%20low%20as%20reasonably%20achievable

Fiche 3,  Justifications,  Français

Record number: 3, Textual support number: 1 OBS

ALARA : de l'anglais «as low as reasonably achievable». Signifie le «niveau le plus faible qu'il soit raisonnablement possible d'atteindre, compte tenu des facteurs socio-économiques»; un principe fondamental en radioprotection.  2, fiche 3, Français, - le%20plus%20bas%20que%20l%27on%20peut%20raisonnablement%20atteindre

Record number: 3, Textual support number: 1 CONT

Le principe d'optimisation de la protection. Toutes les expositions doivent être maintenues au niveau le plus bas que l'on peut raisonnablement atteindre («as low as reasonably achievable» = ALARA) en tenant compte des facteurs économiques et sociaux.  3, fiche 3, Français, - le%20plus%20bas%20que%20l%27on%20peut%20raisonnablement%20atteindre

Record number: 3, Textual support number: 2 OBS

Ce concept constitue un des trois critères fondamentaux recommandés par la Commission internationale de protection radiologique pour réduire au minimum les risques dus aux rayonnements.  4, fiche 3, Français, - le%20plus%20bas%20que%20l%27on%20peut%20raisonnablement%20atteindre

Record number: 3, Textual support number: 1 PHR

Concept, démarche, directive, dose, limite, méthode, niveau, objectif, principe ALARA; concept d'ALARA.  5, fiche 3, Français, - le%20plus%20bas%20que%20l%27on%20peut%20raisonnablement%20atteindre

Record number: 3, Textual support number: 3 OBS

Voir aussi «niveau ALARA» et «principe ALARA».  5, fiche 3, Français, - le%20plus%20bas%20que%20l%27on%20peut%20raisonnablement%20atteindre

Fiche 3,  Justifications,  Espagnol

Fiche 4,  Justifications,  Anglais

Record number: 4, Textual support number: 1 CONT

Biological effects of ionizing radiation. ... at the upper end of the scale, there is no radiation exposure so high it will guarantee that every exposed individual will suffer the effect. Nor at the lower end is any exposure so low that it will carry no risk to anyone of inducing the effect. These radiation effects are therefore said to have "no threshold." Logically, it follows that any exposure to radiation, no matter how small, carries some risk and that any reduction in exposure, even from an already very low level, confers some benefit. However, it is not always appreciated that the absence of a "safe" threshold is a theoretical assumption and a safety precaution rather than something that can be proven. It is also not well understood that the toxic effects of radiation, for which there is no defined safe level, may not differ fundamentally from those of some chemical toxins for which a "safe" level in the body or in the environment has been declared.  1, fiche 4, Anglais, - no%20threshold

Record number: 4, Textual support number: 2 CONT

Complicating the problem of public perceptions of the level of risk associated with radioactive wastes is the confusion induced by two fundamental principles of radio-biological and radiation protection theory. The first is the "no-threshold" hypothesis, and the second is the "as low as reasonably achievable, "or ALARA, principle. The first principle holds that there is no threshold below which exposure to radiation is entirely safe. The "no threshold" hypothesis-that any exposure to ionizing radiation, no matter how small, will increase the probability of a harmful consequence to an exposed individual-is an important scientific concept.... it is generally agreed that it is wise to err on the side of safety and work from the assumption that there is no safe level.  1, fiche 4, Anglais, - no%20threshold

Fiche 4,  Justifications,  Français

Record number: 4, Textual support number: 1 OBS

Voir aussi le terme anglais «threshold limit value».  2, fiche 4, Français, - aucun%20seuil

Fiche 4,  Justifications,  Espagnol

Fiche 5,  Justifications,  Anglais

Record number: 5, Textual support number: 1 CONT

... the ICRP regards all increases of radiation as undesirable, and it has recommended that they should be kept "as low as reasonably achievable"-i. e., the ALARA principle. The recent recommendation of the ICRP, that the maximum permissible occupational radiation exposure for the general public be reduced from 5 to 1 millisieverts per year(and ten times this level for radiation workers), exemplifies the adherence to the principle.  1, fiche 5, Anglais, - maximum%20permissible%20occupational%20radiation%20exposure

Fiche 5,  Justifications,  Français

Fiche 5,  Justifications,  Espagnol