김용국  장성은  김화일

Vol. 40,  No. 1, pp. 57-65, Feb.  2025
10.14341/JKOSOS.2025.40.1.57

public organization safety index resilience resilience assessment grid(RAG)

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This study proposes an effective approach to enhance the safety activity level of power plants by comparing the public organization safety index (POSI) with the resilience assessment grid (RAG) to assess safety-resilience capabilities. Despite the ongoing safety policies and internal efforts in power plants, Company A’s safety activity level evaluation has shown stagnant results over the past four years, maintaining a B grade. Furthermore, safety-resilience evaluations identified discrepancies between the POSI and RAG results, with higher issue frequencies observed in response and monitoring capabilities. In contrast, learning and prediction capabilities had lower resilience assessment scores. To address these gaps, this study applied the RAG framework, focusing on four key resilience capabilities—response, monitoring, learning, and prediction—across safety-critical operations. Key findings indicate that, while response and monitoring capabilities are actively managed, weaker learning and prediction capabilities highlight the need for a more comprehensive approach to proactive risk management. Additionally, this study revealed that POSI’s emphasis on structural performance limits its ability to capture operational safety outcomes, underscoring the need for a Safety-II approach that integrates continuous learning and forecasting. This study suggests that strengthening learning and prediction capabilities, refining POSI indicators to reflect resilience-based metrics, and involving safety-resilience experts in evaluations are crucial for fostering sustainable safety improvements in power-plant operations. By implementing these measures, power plants can advance beyond regulatory compliance to achieve an adaptive and proactive safety culture that supports stable power generation and national energy security.