The high-temperature gas-cooling reactor (HTGR) is an advanced converter reactor operated by using thorium/uranium cycle and utilizing 93% 235U-enriched or 20% 235U-enriched uranium and thorium as fissile fuel. In this paper
two fuel cycles of the HTGR
i. e. once-through and recycle
have been investigated. The early stage costs of fuel and fuel cycle were calculated. Effects of natural uranium
enrichment
reprocessing and fabrication of the Th-U recycle fuel on price variation were studied.