REPOWERING COAL-FIRED STEAM POWER PLANT WITH NUCLEAR REACTOR: STRATEGY, CASE STUDY, EMISSIONS IMPACT, RELIABILITY AND ECONOMIC ANALYSIS

• Main Author: Fathoni Hari, Mufthi
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/84532
• Institution: Institut Teknologi Bandung

The commencement of fourth-generation nuclear reactors that have higher heat supply capabilities makes repowering option becomes attractives. Currently, there is still a literature gap in decarbonization options using nuclear reactors at the program level. This study can help fill the gap in decarbonization of thermal power plants in Indonesia and as a reference for retrofitting, repowering and optimizing the power system mix. The repowering study was conducted by determining the most appropriate nuclear reactor, formulating an implementation strategy in Indonesia, simulating the thermodynamic characteristics of the coal-fired steam supply system (CFSPP) before and after the integration of the nuclear reactor, finding out the reduction of emissions, the impact of operational performance reliability and attractiveness from an economic aspect. The results of this study determine HTR-PM (High Temperature Gas-Cooled Reactor Pebble-bed Module) as a nuclear heat source, and CFSPP can be grouped into 3 groups with group-1 as a priority with 19 units and a total capacity of 9390 MW. The results of the CFSPP model simulation and integration with nuclear steam supply system in Ebsilon software show that repowering can be done. Repowering can eliminate NOx, SOx, PM, Hg and CO2 emissions. Repowering of group-1 can avoid emissions of 52.68 million tons of CO2 or 18% of the total emissions of the power generation sub-sector. Repowering PLTU can increase Equivalent Availability Factor from 87.28% to 92.83% and reduce Equivalent Forced Outage Rate from 5.26% to 3.19%. In the economic aspect, by utilizing the learning effect and carbon trading, Levelized Cost of Electricity can be achieved up to 53.66 USD/MWh with a payback period in the 10th year, although the largest Internal Rate of Return is still only at 7.5%.