ALARA (English spelling)

Japanese: アララ（英語表記）ALARA

"As Low As Reasonably Achievable" is an international principle for all radiation exposure advocated by the ICRP (International Commission on Radiological Protection). Since the use of radiation brings about great benefits, a certain degree of exposure is unavoidable, but it is based on the idea that the associated radiation exposure dose must be kept as low as economically and socially permissible.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:

"As Low As Reasonably Achievable" (合理的に達成できる範囲でできるだけ低く) の略で，ICRP (国際放射線防護委員会) が提唱しているすべての放射線被ばくに対する国際的原則。放射線の利用は多大の利益をもたらすものである以上，ある程度の被ばくはやむをえないが，それに伴う被ばく線量は経済的・社会的に許されるかぎり最小に食い止める必要があるという精神に基づいている。

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