In general, radiation protection is the science and practice of protecting people and the environment from the harmful effects of ionizing radiation.
According to the ICRP (Publication 103), the System of Radiological Protection is based on the following three principles:
- Justification. “Any decision that alters the radiation exposure situation should do more good than harm.”
- Optimisation of Protection. “Doses should all be kept as low as reasonably achievable, taking into account economic and societal factors.” (known as ALARA or ALARP)
- Dose Limitation. “The total dose to any individual … should not exceed the appropriate limits.”
See also: ICRP, 2007. The 2007 Recommendations of the International Commission on Radiological Protection. ICRP Publication 103. Ann. ICRP 37 (2-4).
See also: Dose Limits
The following table summarizes dose limits for occupationally exposed workers and for the public:
According to the recommendation of the ICRP in its statement on tissue reactions of 21. April 2011, the equivalent dose limit for the lens of the eye for occupational exposure in planned exposure situations was reduced from 150 mSv/year to 20 mSv/year, averaged over defined periods of 5 years, with no annual dose in a single year exceeding 50 mSv.