This standard specifies the annual intake limit of radionuclides for members of the public of different ages. This standard is applicable to the internal radiation protection assessment of members of the public. GB/T 16142-1995 Annual intake limit of radionuclides for members of the public of different ages GB/T16142-1995 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Annual limits on intake of radioactive nuclides for the public menbers with the different age1 Subject content and scope of application
This standard specifies the annual limits on intake of radioactive nuclides for the public menbers with the different age. This standard is applicable to the evaluation of internal radiation protection of the public or personnel. 2 Referenced standards
GB 4792 Basic Standard for Health Protection of Radiation
3 Dose limits for individuals in the public
3.1 The annual dose equivalent received by individuals in the public should be lower than the following values: whole body (calculated as effective dose weight equivalent>;5rSv
for a single tissue or organ, 50mS
GB/T 16142—1995
3.2 When exposed to ionizing radiation for a long time: the annual effective dose equivalent limit of the whole body radiation of an individual in the public in his lifetime is 1 mSv
3.3 The annual dose equivalent refers to the sum of the external exposure dose equivalent in any one path and the committed dose equivalent caused by the intake of radionuclides in this path, but does not include natural background radiation and medical radiation. 4 Annual intake limits of radioactive substances for members of the public of different ages 4.1 The annual intake of radionuclides for members of the public of different ages shall not exceed the annual intake limits for the corresponding age groups listed in Appendix A (Supplement) (the annual intake limits for age groups listed in the table are the annual effective dose equivalent limits of 1 4.2 If the average annual effective dose equivalent of the lifetime dose of members of the public does not exceed: Sv, then for each year, it is allowed to take 10 times the annual oxygen intake value for the corresponding age listed in Record A as the annual intake maximum limit. 5 Limits under mixed internal and external exposure
5.1 Under combined internal and external exposure, when the following inequality is satisfied, it can be considered that the dose limit for members of the public specified in Article 3.2 will not be exceeded:
Where: Hm.-
Public effective dose equivalent limit (1mSv); Annual effective dose oxygen equivalent for external exposure of members of the public (H National Technical Supervision High Approved on December 15, 1995 264
...+........++++++ +
wH),nSv.
1996-07-01 implementation
GB/T 161421995
Annual intake associated with age group t and effective radionuclides, +Annual intake limit associated with age group: and radioactive nuclear decay, Bl. 5.2 If the average natural dose of members of the public does not exceed 1mSv, when they are exposed to mixed internal and external radiation in certain years, the following inequality should be met according to the requirements of 3.1:
Where tHn
Annual effective dose of the public is the maximum limit (5 mSv). The meanings and units of other symbols are the same as above.
++++ 2)
GB/T 16142-1995
Annual intake limits of radionuclides for each age group ALI (supplementary)
A1 Table A1 lists the AI.I values ​​of certain radionuclides for the public of different age groups to ingest (ingestion, inhalation). When allowing an annual intake limit of 1.5% for certain years, the provisions of Article 4.2 shall be followed. A2 The applicable age range of the age-related annual intake limit table is as follows: 3 age groups: 1-year-olds, 9-12-month-olds; 11-year-olds, 15-year-olds, 12-7-year-olds; 15-year-olds, 12-7-year-olds; and 1-year-olds. A3 The annual intake limit for inhalation is calculated based on particles with an inhaled median aerodynamic diameter (A.MAD) of 1 U. When A.MAD is not equal to 1 μ, ALI should be considered. The two digits given in the correction A4 and A1 are for consideration of recalculation and do not represent their precision. For practical application, only one significant digit is taken.
Intake limit AI.I for each age group
Combination form
Intake mode
Intake effect classification 3H
Organic compound
Organic fraction
Left compound structure
Extended compound
Abstract
All compounds
All compound fields
Halogen compound
8-3E3-1
Intake effect on age group, years old
5-tEOL
3 7EC5
·8EG7
-·3EC6
1-6E04
1-5E05
3-7E03www.bzxz.net
二.8F:06
-- 5E04
1-2E35
By the young
Introduction mode
Compound form
3 tablets
Inhalation material classification
Halogen compounds
All compounds
All compounds
All compounds
All compounds||tt| |New compounds
Except compounds developed by the institute
All compounds
Except hydrides
All compounds
Except compounds
All compounds
Except compounds
All compounds
GB/T16142
Continued A1
1,4E04
. 7F;02
4- EE:I
A- Rkc
Age when entering, years
2-6E06
7-1E:04
1: 4EC5
Adults
5-riEOn
-L3E02
7, 1F:22
Intake form
Compound form
Classification of inhaled substances
All compounds
All compounds
GB/T16142-1995
Continued Table A1
Most entering age group, safety
3 months
Health, 1) Classification of inhaled substances:
Class D radioactive substances have a biological half-life of less than 10 days in the lungs, and Class W hazardous radioactive substances have a biological half-life of 10~10 days in the lungs. Class D radioactive substances have a biological half-life of more than 103 days. 2) 1.8E07 in the table represents 1.#×10%.
Additional notes:
This standard was proposed by the Ministry of Health of the People's Republic of China. This standard was drafted by the Beijing Institute of Radiation Medicine. The main drafter of this standard was Zheng Wenzhong.
.2. Eoa
This standard was issued by the Ministry of Health and the Ministry of Health Industrial Hygiene Laboratory, which was entrusted by the Ministry of Health to be responsible for the interpretation. 268
Adults
1-8E01
1-1E05
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