시스템엔지니어링학술지 (Journal of the Korean Society of Systems Engineering)

  • 제14권2호
  • /
  • Pages.24-32
  • /
  • 2018
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  • 1738-480X(pISSN)
  • /
  • 2288-3592(eISSN)
한국시스템엔지니어링학회 (The Korean Society of Systems Engineering)
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Development of Simplified DNBR Calculation Algorithm using Model-Based Systems Engineering Methodology

  • 투고 : 2018.10.29
  • 심사 : 2019.01.07
  • 발행 : 2018.12.31
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초록

System Complexity one of the most common cause failure of the projects, it leads to a lack of understanding about the functions of the system. Hence, the model is developed for communication and furthermore modeling help analysis, design, and understanding of the system. On the other hand, the text-based specification is useful and easy to develop but is difficult to visualize the physical composition, structure, and behaviour or data exchange of the system. Therefore, it is necessary to transform system description into a diagram which clearly depicts the behaviour of the system as well as the interaction between components. According to the International Atomic Energy Agency (IAEA) Safety Glossary, The safety system is a system important to safety, provided to ensure the safe shutdown of the reactor or the residual heat removal from the reactor core, or to limit the consequences of anticipated operational occurrences and design basis accidents. Core Protection Calculator System (CPCS) in Advanced Power Reactor 1400 (APR 1400) Nuclear Power Plant is a safety critical system. CPCS was developed using systems engineering method focusing on Departure from Nuclear Boiling Ratio (DNBR) calculation. Due to the complexity of the system, many diagrams are needed to minimize the risk of ambiguities and lack of understanding. Using Model-Based Systems Engineering (MBSE) software for modeling the DNBR algorithm were used. These diagrams then serve as the baseline of the reverse engineering process and speeding up the development process. In addition, the use of MBSE ensures that any additional information obtained from auxiliary sources can then be input into the system model, ensuring data consistency.

키워드

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[Figure 1] Software Development Life Cycle Documentation Based on IEC 880

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[Figure 3] DNBR Algorithm IDEF0 Diagram

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[Figure 2] DNBR Algorithm Requirements

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[Figure 4] N2 Diagram for DNBR Algorithm

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[Figure 5] EFFBD Diagram for Sub-module 1

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[Figure 6] MATLAB Code in conjunction with EFFBD for Sub-module 1

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[Figure 7] MOP Traceability Matrix

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[Figure 8] MATLAB Simulink Model for DNBR Algorithm

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[Figure 9] Software Development Life Cycle included recommended Modeling Diagrams

The Algorithm TPM

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참고문헌

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