Contribution of high natural background radiation area studies to an evolved system of radiological protection

2005 ◽  
Vol 1276 ◽  
pp. 162-165 ◽  
Author(s):  
Masahito Kaneko
Keyword(s):  
Background Radiation ◽  
Radiological Protection ◽  
Natural Background ◽  
Area Studies ◽  
Natural Background Radiation ◽  
Radiation Area

A unique high natural background radiation area in Indonesia: a brief review from the viewpoint of dose assessments

2021 ◽  
Author(s):  
Eka Djatnika Nugraha ◽  
Masahiro Hosoda ◽  
Yuki Tamakuma ◽  
Chutima Kranrod ◽  
June Mellawati ◽  
...  
Keyword(s):  
Background Radiation ◽  
Natural Background ◽  
Natural Background Radiation ◽  
Dose Assessments ◽  
Radiation Area

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 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.

scholarly journals Annual Effective Dose from Natural Background Radiation in Pokhara, Nepal

2020 ◽  
pp. 36-42
Author(s):  
S. P. Gautam ◽  
A. Silwal ◽  
S. Acharya ◽  
B. Aryal
Keyword(s):  
Effective Dose ◽  
Dose Rate ◽  
Background Radiation ◽  
Annual Effective Dose ◽  
Radiological Protection ◽  
Natural Background ◽  
Radiation Dose Rate ◽  
Natural Background Radiation ◽  
Effective Dose Rate ◽  
Annual Effective Dose Rate

Measurement of outdoor natural background radiation doses at different locations of Pokhara city, Nepal was carried out using GCA-07W, Nuclear Regulatory Commission (NRC) certified Geiger Muller (GM) detector. From the measurements, the least value of background radiation dose rate was found to be 0.26 ± 0.08 μSv/hr for Mahendra Cave area, and the highest value of dose rate was found to be 0.65 ± 0.12 μSv/hr for Prithvi Narayan Campus. The average annual effective dose rate of Pokhara city was found to be 0.56 ± 0.12 mSv/yr ranging from 0.31 ± 0.09 mSv/yr to 0.80 ± 0.14 mSv/yr. The radiation levels in Pokhara, the most populated city of the western development region of Nepal, were found to be within the secure limit for areas of the normal background recommended by the International Commission on Radiological Protection (ICRP) (1 mSv/yr). Further, the current result was compared with the previous study of annual effective dose rate measured in Kathmandu city. Comparable value of the average annual effective dose rate in Pokhara and Kathmandu was obtained.

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

Sign in / Sign up

Export Citation Format

Share Document