Control charts for accident frequency: a motivation for real-time occupational safety monitoring.

摘要: This paper quantitatively motivates the need for active monitoring of occupational safety incident data through use cumulative sum (CUSUM) control charts. The frequency incidents within a subset historical accident is analysed. performance Poisson CUSUM and exponential (time-between-events) charts compared in an illustrative example to show that shorter periods aggregation time-between-events lead more timely indications increased frequency. An extension showing anticipated these with real-time given. Various adjustments system are also simulated quick implementation hazard controls can significantly impact performance. Decreases as result implemented be monitored.