What are the main dose limits of international basic safety standards?
Release time:2024/4/12
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Dose limit 5-year average (milliohms/year) Any annual value (milliohms/year)
Occupational exposure 20 50
Public exposure 15
Note: The standards issued by our country will be equivalent to the international basic safety standards.
Occupational exposure dose limit: The occupational exposure level of any staff member should be controlled so that it does not exceed the following limits: 1) The annual average effective dose determined by regulatory authorities for five consecutive years, 20mSv; 2) Effective dose in any year, 50 mSv; 3) Annual equivalent dose of eye lens, 150 mSv; 4) Annual equivalent dose of limbs (hands and feet) or skin, 500 mSv.
Public exposure dose limit: In practice, the estimated average dose received by members of key population groups in the public should not exceed the following limits: 1) Annual effective dose, 1 mSv; 2) In special circumstances, if the average annual dose for 5 consecutive years does not exceed 1 mSv/a, the effective dose for a single year can be increased to 5 mSv; 3) Annual equivalent dose of eye lens, 15 mSv; 4) Annual equivalent dose to skin, 50 mSv.
Potential exposure: The purpose of setting dose limits is to limit the harm of actual exposure. However, the probability and level of potential exposure are difficult to determine, and the optimal results should be taken to determine their probability and level of occurrence.
Occupational exposure 20 50
Public exposure 15
Note: The standards issued by our country will be equivalent to the international basic safety standards.
Occupational exposure dose limit: The occupational exposure level of any staff member should be controlled so that it does not exceed the following limits: 1) The annual average effective dose determined by regulatory authorities for five consecutive years, 20mSv; 2) Effective dose in any year, 50 mSv; 3) Annual equivalent dose of eye lens, 150 mSv; 4) Annual equivalent dose of limbs (hands and feet) or skin, 500 mSv.
Public exposure dose limit: In practice, the estimated average dose received by members of key population groups in the public should not exceed the following limits: 1) Annual effective dose, 1 mSv; 2) In special circumstances, if the average annual dose for 5 consecutive years does not exceed 1 mSv/a, the effective dose for a single year can be increased to 5 mSv; 3) Annual equivalent dose of eye lens, 15 mSv; 4) Annual equivalent dose to skin, 50 mSv.
Potential exposure: The purpose of setting dose limits is to limit the harm of actual exposure. However, the probability and level of potential exposure are difficult to determine, and the optimal results should be taken to determine their probability and level of occurrence.
