## 3 Conclusions  
This study highlights the unique advantages and challenges associated with microreactors. The compact and portable design of microreactors offers significant advantages in terms of rapid deployment and flexible application, particularly in remote or hard-to-reach areas. Unlike large nuclear power plants, microreactors can be installed and start generating energy within a few days, providing significant time and cost savings. Although their compatibility with standard ISO containers facilitates transportation by various means, it also presents certain regulatory challenges. Economic analyses show that despite their high initial costs, the long-term operational benefits of microreactors can make them competitive, especially compared to diesel generators. The learning curve in the production and operation of microreactors can lead to cost reductions. Additionally, the small size and factory production capabilities of microreactors are expected to reduce capital and fuel costs. Operating and maintenance costs may also decrease. However, there are several challenges to the widespread adoption of microreactors. The limited availability of HALEU fuel is a significant barrier to the effective operation of \begin{table}
\begin{tabular}{p{42.7 pt} p{56.9 pt} p{56.9 pt} p{56.9 pt} p{56.9 pt} p{56.9 pt} p{56.9 pt}} \hline \hline
**Country** & **Developed** & **Technological** & **Regulatory** & **Market Acceptance** & **Start Date** & **Type of Fuel** \\  & **SMR Projects** & **Advancements** & **Framework** & **and Applications** & **Used** \\ \hline \multirow{3}{*}{\
\begin{tabular}{} \end{tabular} } & \multirow{3}{*}{NuScale Power \\ States \\ \end{tabular} } & \multirow{3}{*}{NuScale Power} & Advanced safety systems, modular design & Ongoing approval processes by NRC & Commercial applications and public–private partnerships & \multirow{3}{*}{2007} & Low enriched uranium (LEU) \\ \hline \multirow{3}{*}{Canada} & Ontario Power Generation & Innovative fuel use, environmental sustainability & Supported regulatory processes by CNSC & Provincial government and private sector support & \multirow{3}{*}{2011} & Low enriched uranium (LEU) \\ \hline \multirow{3}{*}{Russia} & Floating Nuclear Power Plants & Mobile and flexible energy production, supplying remote areas & Supported regulatory framework by Rosatom & Successful applications in remote and hard-to-reach areas & \multirow{3}{*}{2010} & Low enriched uranium (LEU) \\ \hline \multirow{3}{*}{
\begin{tabular}{} \end{tabular} } & \multirow{3}{*}{Rolls-Royce} & Compact and economic design, rapid construction times & Ongoing approval processes by ONR & Government support and international collaborations & \multirow{3}{*}{2015} & Low enriched uranium (LEU) \\ \hline \multirow{3}{*}{China} & \multirow{3}{*}{ACP100} & Small scale, multipurpose use & Approved by NNSA & Increasing interest in local and international markets & \multirow{3}{*}{2010} & Low enriched uranium (LEU) \\ \hline \hline \end{tabular}
\end{table} 
Table 5: Comparative analysis of small modular reactor (SMR) development in different countries [30; 233; 234; 235; 236]. microreactors. Potential hazards and proliferation threats can be more significant than those in large nuclear power plants, requiring the establishment of security protocols and regulatory frameworks that adhere to international standards. Licensing processes, designed for large nuclear power plants, need to be more flexible and expedited to suit the characteristics of microreactors. The creation and implementation of these yet-to-be-established licensing requirements could delay the practical use of microreactors. Blockchain technology can help overcome these challenges by providing transparency, traceability, and reliability in the licensing process. For example, securely recording and verifying data at every stage of the licensing and regulatory processes can enhance trust among regulatory authorities and stakeholders, accelerate processes, and reduce costs.