Home
Back
Formula Used:
| From: | To: |
The Number of Disabling Injuries formula calculates the expected number of disabling injuries based on the injury frequency rate and total man hours worked. Disabling injuries refer to those that result in either death, permanent disability, or temporary total disability after the day of injury.
The calculator uses the formula:
Where:
Explanation: This formula provides an estimate of the number of disabling injuries that would be expected given a specific injury frequency rate and total work hours.
Details: Calculating the expected number of disabling injuries is crucial for workplace safety planning, risk assessment, and implementing appropriate safety measures to protect workers.
Tips: Enter the injury frequency rate (per 100,000 man hours) and total man hours worked. Both values must be positive numbers.
Q1: What constitutes a disabling injury?
A: A disabling injury is one that results in death, permanent disability, or temporary total disability that continues beyond the day of the injury.
Q2: How is injury frequency rate calculated?
A: Injury frequency rate = (Number of disabling injuries × 200,000) / Total hours worked, where 200,000 represents 100 employees working 40 hours per week for 50 weeks.
Q3: Why use 100,000 as the denominator?
A: The 100,000 figure standardizes the calculation to allow for comparison across different organizations and time periods.
Q4: What are typical values for injury frequency rates?
A: Rates vary by industry, but lower rates indicate better safety performance. Many industries aim for rates below 1.0 per 100,000 man hours.
Q5: How can this calculation help improve workplace safety?
A: By estimating the expected number of injuries, organizations can better allocate resources for safety training, equipment, and preventive measures.