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IAEA: TECDOC No. 1731: Implications for Occupational Radiation Protection of the New Dose Limit for the Lens of the Eye
3.6 Exposure of emergency workers

少なくとも、以下の(a)と(b)では500 mSv未満とし、(c)では100 mSv未満とすることとされています。
(a) For the purposes of saving life or preventing serious injury;
(b) When undertaking actions to prevent severe deterministic effects and actions to prevent the development of catastrophic conditions that could significantly affect people and the environment; or
(c) When undertaking actions to avert a large collective dose.’ (Ref. [1], para. 4.15)
In these exceptional circumstances, response organizations and employers are required to make all reasonable efforts to keep doses (Hp(10)) to emergency workers below 500 mSv in the case of the first two actions, and below 100 mSv in the third action
(Table IV-2 of Ref. [1], and identical with Table 4 of Ref. [67]).

放射線診療での患者の救命行為

planned special exposure provision

NCRP Report No. 168, Radiation Dose Management for Fluoroscopically-Guided Interventional Medical Procedures

NCRP publication 168, recommendation 22

菅原　茂耕．シリーズ：医療現場での放射線管理　第2回　内用療法における安全管理
4.2　急変時の対応