Page 17 - Design Considerations Based on Quantitative Risk Assessments for Slopes

Frequency vs Fatality Chart

Types of F-N Chart

Frequency vs Number of Fatality (F-N) charts may be used

to depict three different types of information:

1. The historical record of incidents. Is normally regional and

used for performance monitoring purposes.

2. The acceptance criteria for judging the tolerability of risk.

Used for risk evaluation, e.g. GEO HK Social Risk Criteria.

3. The results of a Quantitative Risk Analysis (QRA). Is normally

site specific and used as part of decision-making process.

Note: F-L Diagram could also be used for risk assessment.