The aim of this paper is to summarize the research that has already been conducted in the field of PWR technology which utilizes TRISO fuel (Tri-Structural Isotropic) instead of standard PWR fuel. TRISO fuel which in mainly used in HTGRs has been used in SMRs. This type of reactor can be a potential source of energy for a limited power production, heating and desalination facilities at remote location. Combination of TRISO fuel and PWR technology results in a reliable and safe NPP design. Due to enhanced and outstanding passive safety features advanced SMRs are being studied around the world and substantial amount of conceptual research has already been conducted in this field. However, further research is required to be undertaken to optimize these design concepts.
Finally, few areas have been pointed out for further research to overcome the challenges and gaps in this research field.