Injury Frequency Rate, Disabling

One or more indices describing incident performance according to various units of measurement (e.g., disabling injury frequency rate, number of lost-time accidents, disabling injury severity rate, number of first-aid cases, or dollar loss). It may also refer to a summary statement describing incident performance. 

An index computed by multiplying the disabling injury frequency rate by the disabling injury severity rate and dividing the product by 1000 DII = (DIFR x DISR)/1000. This measure reflects both frequency and severity, yielding a combined index of total disabling injury (ANSI Z16.2). See also Incidence Rate Occupational Injury and Illness Classification System (OIICS). 

Standard Disabling Injury Frequency Rate See Disabling Injury Frequency Rate (DIFR). 

According to the Bureau of Labor Statistics, the injury frequency rate for all manufacturing companies rose from 11.8 in 1960 to 15.3 in 1970. The National Safety Council estimates that there are around 15,000 job-related deaths each year and another 2,300,000 workers suffer disabling injuries. The total cost associated with these accidents is nearly 9,500,000,000/yr. 14 These figures are conservative,... 

Lost time accidents NOSA 5 star rating requires a Disabling Incident Frequency Rate (DIFR) of less than one. Most of the South African sites have this rating, and numbers of disabling injuries and incidence rates are given for most sites. 

Industry Frequency Rate Disabling Injuries per 1.000.000 Man-Hours Severity Rate Time Charges per 1, 000,000 Man-Hours... 

A further study analysed both fatality and disabling injury rates across all mines in the period 1973-75 and found that when other relevant factors were controlled both of these indicators were inversely related to the frequency of inspection. The study s author concluded that increasing inspections by 25 per cent would have produced a 13 per cent decline in fatal accidents and an 18 per cent decline in disabling accidents (Boden 1985, p. 497). 

Lost-time injury/illness frequency rate Recordable injury/illness frequency rate Disabling injury/illness frequency rate Medical aid frequency rate First aid or minor injury/illness frequency rate Disabling injury/fllness severity rate Property damage frequency rate Ifroperty damage severity rate (monetary)... 

This is essentially a weighted frequency rate, allowing the days lost due to temporary total disability to be recorded, and also a notional number of days to be recorded for fatalities and permanently disabled cases. The notional days often used are 6000 (20 working years at 300 days per year) for a fatality and 1800 for loss of an eye. The American National Standards Institute (ANSI) has developed an arbitrary schedule of notional days in relation to particular permanently disabling injuries, of which the foregoing are two examples. 

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