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NO THRESHOLD [1 record]
Record 1 - internal organization data 1996-05-13
Record 1, English
Record 1, Subject field(s)
- Radiation Protection
- Nuclear Waste Materials
Record 1, Main entry term, English
- no threshold
1, record 1, English, no%20threshold
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, 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, record 1, English, - no%20threshold
Record number: 1, 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, record 1, English, - no%20threshold
Record 1, French
Record 1, Domaine(s)
- Radioprotection
- Déchets nucléaires
Record 1, Main entry term, French
- aucun seuil 1, record 1, French, aucun%20seuil
Record 1, Abbreviations, French
Record 1, Synonyms, French
- aucun seuil admissible 2, record 1, French, aucun%20seuil%20admissible
proposal
- aucune valeur limite tolérable 2, record 1, French, aucune%20valeur%20limite%20tol%C3%A9rable
proposal
Record 1, Textual support, French
Record number: 1, Textual support number: 1 OBS
Voir aussi le terme anglais «threshold limit value». 2, record 1, French, - aucun%20seuil
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Protección contra la radiación
- Desechos nucleares
Record 1, Main entry term, Spanish
- sin umbral de tolerancia
1, record 1, Spanish, sin%20umbral%20de%20tolerancia
correct
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
- ningún valor límite tolerable 2, record 1, Spanish, ning%C3%BAn%20valor%20l%C3%ADmite%20tolerable
correct
Record 1, Textual support, Spanish
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