Probabilistic Evaluation of Integrated Safety-Security Protection Plans for Process Facilities

Area of Science:

• Chemical Engineering
• Risk Management
• Security Science

Background:

• Growing conflicts necessitate robust safety and security for chemical facilities.
• Conventional safety approaches do not address intentional threats effectively.
• An integrated safety-security framework is crucial for industrial protection.

Purpose of the Study:

• To propose a methodology for evaluating the cost-effectiveness of integrated safety and security strategies.
• To incorporate attack and escalation scenarios into a probabilistic cost-benefit analysis.
• To provide a systematic tool for assessing protection plans in critical infrastructures.

Main Methods:

• Utilizing a probabilistic approach based on Bayesian networks (BN).
• Integrating attack scenarios, escalation scenarios, and barrier performance into cost-benefit analysis.
• Developing a cost-benefit function to quantify economic benefits of damage reduction.

Main Results:

• Demonstrated the effectiveness of integrated safety-security measures in mitigating damage probability.
• Showcased the ability of the methodology to control escalation scenarios.
• Evaluated different protection plans, including fireproofing and video motion detection systems.

Conclusions:

• The proposed methodology offers a systematic tool for assessing the economic efficiency of safety and security plans.
• It effectively bridges the gap between safety and security analyses for critical infrastructure protection.
• This approach enhances decision-making for plant managers and practitioners in risk management.