To ensure a systematic and integrated approach to defense safety management, individual safety management regulations have been consolidated into the National Defense Safety Directive. However, despite being enacted after the enforcement of the Severe Accident Punishment Act, the National Defense Safety Directive does not incorporate the contents of the Serious Accident Punishment Act. This omission is likely to cause confusion in safety management. In this paper, a PDCA analysis of the Severe Accident Punishment Act and the National Defense Safety Directive was conducted to identify area for improvement and supplementation in the Directive. Chapter 3 proposes amendments to clearly define the scope and responsibilities of safety management, implement serious accident prevention measures and inspections, and establish the penalties for those involved. These amendments aim to ensure faithful compliance with the Severe Accident Punishment Act. Chapter 4 emphasizes the implementation and inspection of risk assessments to enhance the effectiveness of safety accident prevention and preparation, thereby ensuring the completeness of the PDCA cycle.

1. Introduction
2. Previous study
    2.1 Serious Accident Punishment Act
    2.2 National Defense Safety Directive
    2.3 PDCA Cycle
3. PDCA analysis
    3.1 Analysis of the Serious Accident Punishment Act
    3.2 Analysis of the National Defense Safety Directive
    3.3 Implication
4. Presentation of development plan for nationaldefense safety directive
    4.1 Factors to consider for improvement and supplementation
    4.2 National Defense Safety Directive Amendment (Plan)
5. Conclusion
References

• Jeong-Woo Han(Commander, Navy Safety Group, Gyeryong, Republic of Korea)
• Cho-Young Jung(Professor, Department of Public Service in Ocean & Fisheries, Kunsan National University, Gunsan, 54150, Republic of Korea) Corresponding author