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Injury Index Formula:
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The Injury Index (II) provides the overall picture of injuries signifying both frequency and severity. It combines multiple safety metrics into a single comprehensive measure of workplace safety performance.
The calculator uses the Injury Index formula:
Where:
Explanation: The equation combines frequency, severity, and count of disabling injuries to provide a comprehensive safety performance indicator.
Details: The Injury Index is crucial for assessing overall workplace safety performance, identifying trends, and implementing targeted safety improvements. It helps organizations track their safety performance over time and compare against industry benchmarks.
Tips: Enter Injury Frequency Rate (per lakh man hours), Injury Severity Rate (days per 1000 man hours), and Number of Disabling Injuries. All values must be valid positive numbers.
Q1: What constitutes a disabling injury?
A: Disabling injuries refer to injuries that result in either death, permanent disability, or temporary total disability after the day of injury.
Q2: How is Injury Frequency Rate calculated?
A: Injury Frequency Rate = (Number of disabling injuries × 1,00,000) / Total man hours worked
Q3: How is Injury Severity Rate calculated?
A: Injury Severity Rate = (Total days lost due to injuries × 1000) / Total man hours worked
Q4: What is a good Injury Index value?
A: Lower values indicate better safety performance. The ideal value is zero, indicating no disabling injuries occurred.
Q5: How often should Injury Index be calculated?
A: Typically calculated monthly or quarterly to track safety performance trends and identify areas for improvement.