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AUTHOR(S): Kazi Labiba Rahman Aurna, Roshlan Rahman Dipto, Abdus Sattar Mollah
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ABSTRACT Spent nuclear fuels discharged from reactors are first stored in cooling pools, but due to limited pool capacity, dry storage systems are increasingly employed as an intermediate and long-term management solution Nuclear dry cask storage has high safety and it is capable of holding large volume of waste at low cost, and can be both stored and transported. The dry type storage cask VSC-24 for spent fuel of VVER type reactor was analysed with neutron transport calculations in this work. Criticality calculations were conducted with the Monte Carlo transport code OpenMC 0.15.2 and an H5 continuous energy cross-section library derived from ENDF/B- VIII.0 was implemented. Comparison to available literature was made for validation purposes in both spatial and energy space for the calculated neutron flux spectra. The effect of the thickness of the concrete outer layer of cask was also studied varying concrete thickness. The results provide a comprehensive guidance for shielding design, long term behaviour of storage and contribute to the safety assessment of dry cask storage. The Rooppur Nuclear Power Plant (RNPP) or other regional centralized facilities could use the VSC-24 cask for temporary dry storage. Its evaluation facilitates cross-compatibility tests between Russian and Western storage technologies and aids in the creation of a regulatory framework for the management of wasted fuel in Bangladesh. Furthermore, this study strengthens local expertise in the processing and storage of spent fuel by facilitating knowledge transfer and capacity building in nuclear engineering safety analysis. |
KEYWORDS Nuclear, Dry Cask, Neutronics, Monte Carlo, OpenMC, Neutron, Shielding |
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Cite this paper Kazi Labiba Rahman Aurna, Roshlan Rahman Dipto, Abdus Sattar Mollah. (2026) Comprehensive Neutronic Assessment of the VSC-24 Cask for Potential Application in Dry Storage of VVER-1200 Spent Fuel. International Journal of Instrumentation and Measurement, 11, 8-16 |
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