Risk Mitigation Strategies based on Risk Assessments for Off-Site Hydrogen Fuel Supply via Pipeline to Combined Cycle Power Plants

Key Points

• The research aims to evaluate risk mitigation strategies for pipeline hydrogen fuel supply to combined cycle power plants based on risk assessments.
• Developed hydrogen supply design using gas turbine pressure requirements.
• Constructed accident scenarios based on pipe length and diameter.
• Utilized ALOHA, PHAST, and E-CA software for risk assessment.
• Conducted comparative analysis of damage impact ranges among different software.
• Significant differences in impact ranges were observed across software programs.
• ALOHA was able to assess asphyxiation risks, while E-CA had limitations due to pipe length variables.
• Applying the first layer of protection resulted in approximately 75% risk reduction, and both layers lead to about 89% risk reduction.