First Czechoslovak atomic-electric station A-1 with heavy-water reactor KS-150 (construction, start-up, and initial experience)

Conclusions

In energy reactors similar to the KS-150 but larger, high fuel-expenditure levels (native metallic uranium) are entirely attainable. Thanks to the high conversion ratio, they can simultaneously produce plutonium for fast reactors in quantities approximately double the unit yield of thermal reactors using enriched uranium.

Another method for developing such reactors [1, 2] may be to use in them a ring with equilibrium concentration of Pu and²³⁸U with additional²³⁵U contained in native uranium or diffusion-plant waste. In this case, they would be able to burn significant quantities of²³⁸U and, using their plutonium many times, also produce transuranic elements.