~ACCIDENT FREQUENCY RATE~ & ~SEVERITY RATE FORMULAS~... An Accident Frequency Rate indicates the number of accidents that occurred in a company per a certain number of hours worked by all employees. The accident rate allows you to easily compare the safely in organizations having different size or over different time frames. Accident frequency rates are calculated for 100,000, 200,000 or 1,000,000 employee working hours (man-hours) depending upon the country. In North America, it is usually given per 200,000 man-hours. How to Calculate Accident Frequency Rates 1. Multiply the number of workers and by the number of hours they work to calculate the man-hour value. For example, if 56 men work 40 hours per week during a year (50 working weeks), then man-hours per year are 56 x 40 hours/week x 50 weeks = 112,000 hours. 2. Divide the number of accidents by the the man-hour value to calculate the number of accidents per a working hour. For example, If the number of accidents per year is 145 then 145 / 112,000 = 0.001295. 3. Multiply the number of accidents per a working hour by 100,000 to calculate the accident frequency rate per 100,000 hours. In this example, the accident frequency rate is 0.001295 x 100,000 = 129.5. 4. Multiply the number of accidents per a working hour by 200,000 to calculate the accident frequency rate per 200,000 hours. In this example, the accident frequency rate is 0.001295 x 200,000 = 259. 5. Multiply the number of accidents per a working hour by 1,000,000 to calculate the accident frequency rate per 1,000,000 hours. In this example, the accident frequency rate is 0.001295 x 1,000,000 = 1295. ------------------------------------------------------------------------------------------ A Severity Rate is a calculation used to examine the safety performance of an organization, shift or department. Numbers used in the calculation come from a record-keeping device required by the Occupational Safety and Health Administration (OSHA). It is called the OSHA 300 log. How to Calculate a Severity Rate How to Compute the Severity Rate in OSHA Lost Days The most important number used to calculate a severity rate is the number of lost work days a company has. Lost work days occur when an occupational injury or illness prevents an employee from working his full, assigned work shift. Occupational injuries include those that go beyond basic first aid, such as injuries requiring sutures, prescription medications or repairing broken bones. Occupational illnesses may result from exposure to dust, heat, fumes or other work-related conditions. Calculation The severity rate describes the number of lost work days experienced per 100 workers. The actual number of lost work days times 200,000 (a standardized estimate of the hours worked by 100 employees) divided by the actual, total number of hours worked by all employees results in the severity rate. So, a company with 85 lost work days over 750,000 hours worked would have a severity rate of 22.7. What It Means The severity rate is meant to show the extent of safety problems by exposing how critical each injury and illness is. The premise is that an employee who must miss time from work to heal and recover has a more severe problem than one who can immediately return to work. SAFETY FIRST!!! ♥♥♥
Posted on: Wed, 25 Jun 2014 07:28:07 +0000
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