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http://dx.doi.org/10.7733/jnfcwt-k.2013.11.4.293

Borehole Disposal Concept: A Proposed Option for Disposal of Spent Sealed Radioactive Sources in Tanzania  

Salehe, Mikidadi (KEPCO International Nuclear Graduate School)
Kim, Chang-Lak (KEPCO International Nuclear Graduate School)
Publication Information
Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT) / v.11, no.4, 2013 , pp. 293-301 More about this Journal
Abstract
Borehole Disposal Concept (BDC) was initiated by the South African Nuclear Energy Corporation (NECSA) with the view to improve the radioactive waste management practices in Africa. At a time when geological disposal of radioactive waste is being considered, the need to protect ground water from possible radioactive contamination and the investigation of radionuclides migration through soil and rocks of zone of aeration into ground water has becomes very imperative. This is why the Borehole Disposal Concept (BDC) is being suggested to address the problem. The concept involves the conditioning and emplacement of disused sealed radioactive sources in an engineered facility of a relatively narrow diameter borehole (260 mm). Tanzania is operating a Radioactive Waste Management Facility where a number of spent sealed radioactive sources with long and short half lives are stored. The activity of spent sealed radioactive sources range from (1E-6 to 8.8E+3 Ci). However, the long term disposal solution is still a problem. This study therefore proposing the country to adopt the BDC, since the repository requires limited land area and has a low probability of human intrusion due to the small footprint of the borehole.
Keywords
Borehole Disposal Concept; Spent Sealed Sources; Radioactive Waste Conditioning; Repository;
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