برآورد مخاطرات تابشی ناشی از سنگ گرانیت موجود در روستاهای ده ‌سیاهان ،خنامان و مانی شهرستان رفسنجان استان کرمان

نوع مقاله : مقاله کنفرانسی

نویسندگان

گروه مهندسی هسته‌ای، دانشکده علوم و فناوری‌های نوین، دانشگاه تحصیلات تکمیلی صنعتی و فناوری پیشرفته، کرمان، ایران

چکیده

انسان در طول سال از منابع تابش مختلفی مثل  تابشهای کیهانی،تابش محیطی،گاز رادن و دستگاه‌های پرتودرمانی در معرض تابش خارجی و داخلی قرار می‌­گیرد.حد مجاز دز سالانه که توسط گزارش ICRU  برای افراد معمولی در نظر گرفته شده SV0.05 است. میزان تابش‌های محیطی بستگی به جنس خاک،مصالح ساختمانی، سنگ گرانیت و محیط پیرامون دارد که می‌­توان با تغییر این مواد میزان خطرات ناشی از تابش‌های محیطی را کاهش داد. متاسفانه روستاهایی در کرمان وجود دارند که بر بستر سنگ گرانیت رادیواکتیو قرار دارند. در این تحقیق میزان خطرات ناشی از این سنگ‌ها برای ساکنین روستاهای مانی ،خنامان و ده سیاهان بررسی شده است.جهت این امر اکتیویته  40K ،238U ،232Thو 137Cs در سنگ‌های گرانیت این سه روستا محاسبه و با استفاده از آن‌ها کمیت‌های مربوط به خطرات تابشی برآورده شده است.نتایج تحقیق نشان می­‌دهد که اکتیویته معادل عناصر رادیواکتیو  40K ،238U ،232Thو 137Cs و کمیت‌های   Raeq ,Dr,Dout,Din,Dtot ,Hex ,Hin ,Iy ,ELCR این سه روستا بالاتر از مقادیر مجاز اعلام شده توسط ICRU می­‌باشد. همچنین کمیت‌های فوق برای روستای مانی خیلی بیشتر از دو روستای خنامان و ده سیاهان است. بنابراین سکونت در روستای مانی و ده سیاهان به علت بالا بودن خطرات تابشی نسبت به روستای خنامان توصیه نمی‌­شود.

کلیدواژه‌ها


عنوان مقاله [English]

Estimation of radiation hazards caused by granite in the villages of Dehsiahan, Khanaman and Mani in Rafsanjan city of Kerman province

نویسندگان [English]

  • Neda Zareie
  • Mohammad Reza Rezaie Rayeni Nejad
Department of Nuclear Engineering, Faculty of Sciences and Modern Technologies, Graduate University of Advanced Technology, Kerman, Iran
چکیده [English]

Humans are exposed to external and internal radiation from various radiation sources such as cosmic radiation, ambient radiation, Radon and radiation therapy devices annually. The permissible annual dose limit set by the ICRU report for ordinary people is 0.05 Sv. The amount of environmental radiation depends on the type of soil, building materials, granite and the surrounding environment, which can be reduced by changing these materials to reduce the risks of environmental radiation. Unfortunately, there are villages in Kerman that are located on a bed of radioactive granite. In this study, the amount of hazards caused by these stones for the residents of Mani, Khanaman and Dehsiahn villages has been investigated. The research results show that the activity of  the 232Th, 238U, 40K and 137Cs radioactive elements and the quantities of Raeq, Dr, Dout, Din, Dtot, Hex, Hin, Iy, ELCR of these three villages are higher than The permissible values ​​are announced by the ICRU.

کلیدواژه‌ها [English]

  • Granite stone
  • activity
  • 232Th
  • 238U
  • 40K and 137Cs
  • Deh siahan
  • Mani
  • Khanaman
  • Radiation hazards
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