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NATURALLY OCCURRING RADIONUCLIDE 40K BODY CONTENT OF KAKRAPAR GUJARAT SITE POPULATION.

M K Jha1, A K Patra1, S S Wagh1

  • 1Environmental Survey Laboratory (Environmental Studies Section, Environmental Monitoring and Assessment Division, Bhabha Atomic Research Centre), Kakrapar Gujarat Site, P.O. Anumala, Surat District, Surat, Gujarat 394651, India.

Radiation Protection Dosimetry
|September 23, 2021
PubMed
Summary
This summary is machine-generated.

This study measured naturally occurring Potassium-40 (40K) body content in the Kakrapar Gujarat Site population using whole-body counting. Occupational workers showed no detected reactor-released radionuclides, indicating no radioactive contamination.

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Area of Science:

  • Environmental Science
  • Nuclear Physics
  • Public Health

Background:

  • Naturally occurring radionuclides like Potassium-40 (40K) contribute to background radiation exposure.
  • Assessing 40K body burden is crucial for understanding internal radiation doses in specific populations.
  • The Kakrapar Gujarat Site population includes atomic power station workers and students, necessitating dose assessment.

Purpose of the Study:

  • To investigate the naturally occurring radionuclide 40K body content in the Kakrapar Gujarat Site population.
  • To estimate the effective dose due to 40K in different demographic and dietary groups.
  • To ensure occupational workers at the Kakrapar Atomic Power Station are free from detected reactor-released radionuclides.

Main Methods:

  • Whole-body counting using a Standfast-II Whole Body Counting System.
  • Monitoring 1056 subjects across various age groups and genders.
  • Estimating effective dose based on measured 40K activity, dietary habits, sex, and age.

Main Results:

  • No reactor-released radionuclides (137Cs, 60Co, 131I) were detected in occupational workers.
  • Annual effective doses due to 40K ranged from 52-243 μSv y-1, with averages varying slightly by diet and sex.
  • The average effective dose for vegetarians was 133 ± 35 μSv y-1, and for non-vegetarians was 136 ± 35 μSv y-1.
  • The 20-29 age group showed a slightly higher effective dose due to 40K.

Conclusions:

  • Occupational workers at the Kakrapar Atomic Power Station are free from detected radioactive contamination from reactor-released radionuclides.
  • The estimated annual effective doses due to 40K are within expected ranges and comparable to international reports.
  • Individual 40K body burden and resulting effective dose are influenced by factors like diet, age, and sex, though significant correlations were not observed in this study.