# Quick Answer: What Is A Severity Rate?

## What is FR and SR in safety?

Workplace safety performance is computed using frequency rate (FR) and severity rate (SR).

The new safety performance factor is defined as the average human-hour unit lost due to occupational accidents/incidents, including fatalities, first-aid incidents, bruises and cuts..

## How do you calculate frequency and severity rate?

How to Calculate LTI Frequency Rate and Severity RateNumber of Employees: 50.Number of lost time injuries: 5.Number of days lost: 10.Number Of days Worked 30. … Lost-Time Injury Frequency Rate.Formula: No of Lost-Time Injuries x 1000,000/Total No of Man Hours. … Frequency Rate: 9.90.More items…

## How is man hour in safety calculated?

The formula is as follows: ([Number of lost time injuries in the reporting period] x 1,000,000) / (Total hours worked in the reporting period). And voila! Your company’s LTIFR is 2.4, which means there were 2.4 lost time injuries for every one million man hours worked.

## How are mandays lost calculated?

Total working days lost to-date or within a period (usually one year) due to reasons such as accidents, lockouts, or strikes. This figure is computed by multiplying the number of days with the number of affected employees.

## What is frequency rate in safety?

The frequency rate is the number of people injured over a year for each million1 hours worked by a group of employees or workers. … If you know the number of injuries over a year and the hours worked then you can calculate the frequency rate.

## How do you calculate severity rate?

The severity rate is measured by taking the lost hours and dividing it by the number of hours worked.

## What is injury severity rate?

The injury severity rate represents the number of lost work days experienced per 100 workers. … Injury severity rate can be calculated by the following formula: Injury severity rate = (number of work days lost + light duty days lost) x 200,000 / total hours worked.

## What is a frequency rate?

The frequency rate is the number of people injured over a year for each million1 hours worked by a group of employees or workers. … If you know the number of injuries over a year and the hours worked then you can calculate the frequency rate.

## What is MTI in safety?

A Medical Treatment Injury (MTI) is defined as an injury or disease that resulted in a certain level. of treatment (not First Aid Treatment) given by a physician or other medical personnel under. standing orders of a physician.

## What is DART rate formula?

The DART rate is calculated using the following formula: (Number of OSHA Recordable injuries and illnesses that resulted in Days Away; Restricted; Transferred X 200,000) / Employee hours worked = Days Away Restricted Transferred (DART) Rate.

## How is LTI calculated?

How to Calculate Lost Time Injury Rate. Lost Time Injury rate follows a simple formula to indicate your performance. Divide the total number of lost time injuries in a certain time period by the total number of hours worked in that period, then multiply by 200,000 to get the LTIR.

## What is LTI in safety?

Lost Time Injury (LTI) Any work-related injury, resulting in. the company, contractor or third party. contractor employee not being able to.