Note:

Risk Index Formula calculates net risk by offsetting hazards against existing controls. A positive value indicates adequate controls, while negative shows residual risk.

Key Parameters:

• Control Score - Measure of how effectively hazards are controlled (higher is better)
• Hazard Score - Measure of potential harm severity/probability (lower is better)

Real-Life Applications:

• Safety Audits - Identifying under-controlled hazards
• Fire Risk Assessment - Evaluating building safety levels
• Incident Prevention - Prioritizing risk reduction efforts
• Safety Planning - Allocating resources effectively
• Regulatory Compliance - Demonstrating due diligence

Why This Calculation is Important?

It provides a single metric showing whether your current controls sufficiently address the hazards, helping prioritize safety investments and fire prevention measures.

Why in Safety & Fire Calculator?

This calculation is fundamental to modern risk assessment methodologies in safety and fire engineering, where both hazards and controls must be considered together.

Interpretation Guidelines:

• Positive Values (+) - Controls exceed hazards (safe condition)
• Near Zero (≈0) - Controls match hazards (borderline)
• Negative Values (-) - Hazards exceed controls (needs improvement)
• Below -10 - Immediate action required

Industry Standards & Guidelines:

Aligned with ISO 31000 risk management, NFPA risk assessment methods, and OSHA hazard ranking systems. Basis for bowtie risk analysis.

Conclusion:

The risk index provides a clear, quantitative measure of your safety margin - the essential difference between hazards present and controls implemented - enabling data-driven safety decisions.

How to calculate Control Score and Hazard Score?

If you need more information on how to calculate the Control Score and Hazard Score, you can refer to the following resources:

• Control Score Calculator
• Hazard Score Calculator