scholarly journals Comprehensive exposure assessments from the viewpoint of health in a unique high natural background radiation area, Mamuju, Indonesia

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Eka Djatnika Nugraha ◽  
Masahiro Hosoda ◽  
Kusdiana ◽  
Untara ◽  
June Mellawati ◽  
...  
Keyword(s):  
Background Radiation ◽  
Scientific Data ◽  
Cluster Sampling ◽  
Average Dose ◽  
Natural Background ◽  
Cross Sectional ◽  
High Exposure ◽  
Natural Background Radiation ◽  
Study Results ◽  
Radiation Area

AbstractMamuju is one of the regions in Indonesia which retains natural conditions but has relatively high exposure to natural radiation. The goals of the present study were to characterize exposure of the entire Mamuju region as a high natural background radiation area (HNBRA) and to assess the existing exposure as a means for radiation protection of the public and the environment. A cross-sectional study method was used with cluster sampling areas by measuring all parameters that contribute to external and internal radiation exposures. It was determined that Mamuju was a unique HNBRA with the annual effective dose between 17 and 115 mSv, with an average of 32 mSv. The lifetime cumulative dose calculation suggested that Mamuju residents could receive as much as 2.2 Sv on average which is much higher than the average dose of atomic bomb survivors for which risks of cancer and non-cancer diseases are demonstrated. The study results are new scientific data allowing better understanding of health effects related to chronic low-dose-rate radiation exposure and they can be used as the main input in a future epidemiology study.

A unique high natural background radiation area – Dose assessment and perspectives

2021 ◽  
Vol 750 ◽  
pp. 142346
Author(s):  
Masahiro Hosoda ◽  
Eka Djatnika Nugraha ◽  
Naofumi Akata ◽  
Ryohei Yamada ◽  
Yuki Tamakuma ◽  
...  
Keyword(s):  
Background Radiation ◽  
Dose Assessment ◽  
Natural Background ◽  
Natural Background Radiation ◽  
Radiation Area

A New Natural Background Radiation Area on the Southwest Coast of India

1993 ◽  
Vol 65 (4) ◽  
pp. 390-395 ◽  
Author(s):  
A. P. Radhakrishna ◽  
H. M. Somashekarappa ◽  
Y. Narayana ◽  
K. Siddappa
Keyword(s):  
Background Radiation ◽  
Natural Background ◽  
Southwest Coast Of India ◽  
Natural Background Radiation ◽  
Southwest Coast ◽  
Radiation Area

Population Study in the High Natural Background Radiation Area in Kerala, India

1999 ◽  
Vol 152 (6) ◽  
pp. S145 ◽  
Author(s):  
M. Krishnan Nair ◽  
K. S. V. Nambi ◽  
N. Sreedevi Amma ◽  
P. Gangadharan ◽  
P. Jayalekshmi ◽  
...  
Keyword(s):  
Population Study ◽  
Background Radiation ◽  
Natural Background ◽  
Natural Background Radiation ◽  
Radiation Area

scholarly journals Study of natural background radiation in Kathmandu Valley

BIBECHANA ◽  
2018 ◽  
Vol 16 ◽  
pp. 187-195
Author(s):  
Parkash Pantha ◽  
Tanka Prasad Bhusal ◽  
Budha Ram Shah ◽  
Rajendra Prasad Koirala
Keyword(s):  
Effective Dose ◽  
Dose Rate ◽  
Background Radiation ◽  
Annual Effective Dose ◽  
Kathmandu Valley ◽  
Radiological Protection ◽  
Average Dose ◽  
Natural Background ◽  
Natural Background Radiation ◽  
Dose Rates

The study of natural background radiation dose at thirty two locations of Kathmandu valley has been done successfully using the instrument Radalert 100. The average dose rates and annual effective dose were measured. From the measurements, the least value of average dose rate was found to be (22.3±3.9)×10-3 mR/hr for Sundhara and the greatest value of average dose rate was  found to be (37.7±7)×10-3 mR/hr for Budhanilkantha 3.  As per the annual effective dose, the least value was 0.391 mSv/yr for Sundhara and the greatest value was 0.661 mSv/yr for Budhanilkantha 3. The average annual effective dose of Kathmandu valley was 0.475 mSv/yr ranging from 0.391 mSv/yr to 0.661 mSv/yr. The values thus obtained were compared to the worldwide average value of annual effective dose, 0.48 mSv/yr. Also, the obtained values were compared to the legal dose limit (annual effective dose), 1 mSv/yr set by International Commission on Radiological Protection (ICRP) for non-radiation workers and members of public. Among these thirty two locations, eight locations were chosen such that they had larger range of the observed dose rates. Those eight locations were re-observed. Further, Chi-square test was carried out to test whether the observed dose rates were following normal distribution or not. From the calculation, it was observed that the observed dose rates were following the normal distribution.BIBECHANA 16 (2019) 187-195

Investigation and Study on Environmental Radioactive Background in Xinchang and Jijicao Rock of Beishan Preselected Region for HLW Disposal Repository in China

2013 ◽  
Vol 726-731 ◽  
pp. 869-876
Author(s):  
Guo Hua Qiu
Keyword(s):  
Background Radiation ◽  
Environmental Radioactivity ◽  
Radioactive Waste Disposal ◽  
Natural Background ◽  
Local Resident ◽  
Natural Background Radiation ◽  
The Public ◽  
Environmental Investigation ◽  
High Level ◽  
Investigation And Study

On the basis of field environmental investigation and monitoring, the environmental radioactivity background of Xinchang and Jijicao rock in Beishan preselected region has been preliminary investigated and studied, and the public dose from local natural background radiation is estimated which can provide basic data and information for environmental impact assessment and safety assessment of HLW(the high level radioactive waste) disposal repository in the future. From the result of investigation and study, the environmental radioactivity of Xinchang and Jijicao rock is generally within normal natural background. The effective dose to local resident from natural background radiation is 2.110 mSv/a by internal and external exposure.

Sign in / Sign up

Export Citation Format

Share Document