Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

Suresh N. Karkhanis ¹, R. K. Bajpai ², P. K. Narayan ²

Affiliations
1 Analytical Research Laboratory, Department of Petroleum and Polymer Engineering, MAEER's Maharashtra Institute of Technology, S No 124, Ex-Servicemen Colony, Kothrud, Pune - 41 1 038, IN
2 Bhabha Atomic Research Centre, Trombay, Mumbai - 400 085, IN

Abstract

No Abstract.

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R. K. Bajpai ¹, P. K. Narayan ¹

Affiliations
1 Bhabha Atomic Research Center, Trombay, Mumbai - 400 085, IN

Abstract

One of the most critical issues in nuclear waste management is the extrapolation of material and system behavior from Short-Term laboratory experiments, typically on the order of Two-Three years to thousands of years. Natural rhyolitic and basaltic glasses serve as potential natural analogues of nuclear waste glasses for providing insight on the long term performance assessment of these High-Level radioactive waste forms over thousands of years in a deep geological repository. In spite of compositional variation, a remarkable phenomenal similarity exists among these glasses in terms of alteration mechanism, rates and products when subjected to alteration by both fresh as well as marine waters. In this note, the geochemistry of shock glasses from world famous impact crater of Lonar Lake, Buldana district, Maharashtra is evaluated to assess its suitability for use as a natural analogue of waste glasses.

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R. K. Bajpai ¹, P. K. Narayan ¹, R. K. Trivedi ²

Affiliations
1 Back End Technology Development Division, Nuclear Recycle Group, Bhabha Atomic Research Center, Department of Atomic Energy, Mumbai - 400 085, IN
2 Centre of Advanced Study in Geology, University of Saugor, Sagar, Madhya Pradesh - 470 003, IN

Abstract

Good analogy in terms of migration of Cs, groundwater chemistry, thermal and hydraulic processes and near field geochemistry, has been noticed between the Puga Geothermal Field and a typical granite hosted nuclear waste geological repository. The former can contribute immensely for demonstration of long term degradation of material used in geological repository viz Waste glasses, Backfill and Buffer clays and rocks under the influence of varying thermal-Hydraulic and chemical conditions. It also holds good potential to study Cs migration, gas mobility and modification of groundwater chemistry, thereby providing field scale parametric values to a number of key processes of a geological repository for nuclear wastes. The results can be used to validate numerically simulated radionuclide migration pattern through various groundwater pathways.

Keywords

Nuclear Wastes, Geological Repository, Puga Thermal Springs, Ladakh, Jammu and Kashmir.

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