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ORIGINAL ARTICLE
Year : 2013  |  Volume : 36  |  Issue : 2  |  Page : 52-56

Study on radiological contamination of ship scraps and environmental materials in ship breaking area of Chittagong, Bangladesh


1 Department of Physics, Chittagong University of Engineering and Technology, Chittagong; Tandem Accelerator Facility Division, INST, Atomic Energy Research Establishment, Savar, Dhaka, Bangladesh
2 Tandem Accelerator Facility Division, INST, Atomic Energy Research Establishment, Savar, Dhaka, Bangladesh
3 Radioactivity Testing and Monitoring Laboratory, Bangladesh Atomic Energy Commission, Chittagong, Bangladesh
4 Department of Physics, Chittagong University of Engineering and Technology, Chittagong, Bangladesh

Correspondence Address:
Bijoy Sonker Barua
Department of Physics, Chittagong University of Engineering and Technology, Chittagong - 4349
Bangladesh
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Source of Support: 1. National Science and Technology Fellow, 2. Chittaogng University of Engineering and Technology authority, 3. Bangladesh Atomic Energy Commission., Conflict of Interest: None


DOI: 10.4103/0972-0464.128867

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The environmental radioactivity levels, both natural and anthropogenic, in the ship scrapped materials such as metal, rubber and foam and tree bark of ship breaking area of Bhatiari, Chittagong in the southern part of Bangladesh were analyzed by using a high purity germanium γ-ray spectrometry. The specific radioactivities of Radium (226 Ra), Thorium (232 Th) and Potassium (40 K) were measured in the above samples. From the measured specific radioactivities of the above three natural radionuclides, the radium equivalent activity (Ra eq) and the external hazard index (H ex) were calculated. The natural radioactivity in scrapped metal collected from the engine of a ship is found to be a bit higher. In other samples, the Ra eq values were in the range of 21 → 145 Bq/kg and the H ex varied from 0.06 to 0.39, which indicates that the working environment of the ship breaking area of Chittagong is radiologically safe.


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