Reverse Engineering Program Using MBSE to Support Development of I&C System Experimental Power Reactor from PLC to FPGA

Indonesian Experimental Power Reactor (RDE) basic design is designed by refer to the High Temperature Gas-cooled reactor-test Module (HTR-10) type which developed by Tsinghua University in China since 1995 and receiving the first critically on December 2000. Currently, the market for a control system in nuclear power plant (NPP) industry is using micro-controller and Programmable Logic Controller (PLC). Since the computer-based technologies are vulnerable to cyber-attack possibility, software common cause failure (CCF) and system complexity, however, development of RDE designs should be thought of by the latest technologies in accordance with the development of Instrumentation and Control (I&C) system which play an important role in maintaining the safety aspect for NPP. This study deals with the reverse engineering program for I&C with the PLC-based system, to obtain the design specification from the previous design in order to improve its reliability by considering systems hardware using Field-programmable Gate Array (FPGA) as an alternative platform. Before developing reverse engineering should analyze why FPGA become an alternative system to change the PLC-based system. Reverse engineering process will cover by model-based system engineering (MBSE), which is the formal modeling application to support systems requirements, design, analysis, verification and validation (V&V) activities. The process starting with the conceptual design, requirement analysis, continuing throughout development and later life cycle phases which is recommended using V model. It is hoped that by doing this reverse engineering program, there is an analysis function related I&C system so that the more reliable design with the use of FPGA-based platform can be made. Reverse engineering can also help to track back the original development with I&C platform from the licensing requirement so that to develop re-engineering program for the new FPGA-based I&C system can meet the design criteria and accepted by the regulatory commission. The requirement, selection of lifecycle model, and verification methodology will be will be explained clearly in order to become a reference in the development plan of RDE in Indonesia. (paper)