LEVEL MEASUREMENT OF WORK ACCIDENTS
Some of these measurements are as follows:
A. ILO STANDARDS
1. ACCIDENT Incident Rate (AIR)
AIR = number of casualties in a year / the number of hours worked in a year) X 1000
This measurement is suitable for organizations that do not keep records of working hours and the length of time and the time of accident victims handling.
2. ACCIDENT FREQUENCY RATE (AFR)
The figures indicate the number of victims of accidents per 1 million hours worked man (man-hour) by the formula:
AFR = (number of casualties in a year / the number of hours worked in a year) x 1,000,000
3. ACCIDENT SEVERITY RATE (ASR)
The figures indicate the number of days lost per 1,000 hours worked in a year people from accidents,
the formula:
ASR = (number of days lost in a year / the number of hours worked in a year) x 1,000
B. ANSI STANDARDS
1. Disabling FREQUENCY RATE (DFR)
DFR = (Number of Disabling Injuries and Illness / Number of hours worked per year) X 1000.000
2. Disabling SEVERITY RATE (DSR)
DSR = (Total Days Charged / the number of hours worked per year) X 1 million
3. Averege DAYS CHARGED (ADC)
AD = Total Days Charged / Total Disabliong Injuries
= X Frequency Rate Severity Rate
C. OSHA STANDARDS
1. Incident Rate (IR)
IR = (Number of Injuries & Illness / The number of working people) X 200 000
2. SEVERITY RATE (SR)
= Total Days Charged / Number of hours worked per year
3. Averege workday PER TOTAL LOST LOST WORKSDAYS
= Total Lost Workdays / Total Lost workdays cases
4. Averege DAYS AWAY FROM WORK
= Total away from work / Total cases involving away from work
D. STANDARD ENGLISH
1. Incident Rate (IR)
IR = (number of accident victims in a year / Total work force in a year) X 1000
2. FREQUENCY RATE (FR)
FR = (Number of Victims of accidents in a year / Total working hours in a year) X 1000
3. FATAL ACCIDENT FREQUENCY RATE (FAFR)
FAFR = Number of victims die /
Severity Rate (SR) and using the formula ANSI requency Rate
E. CRITERIA nonstandard
These criteria issued by the statistical expert / not certain official agencies
1. Disabling Injury INDEX (DII)
DII = (FR X SR) / 1000
Purpose: Describe the combination of FR and SR & Comparison accident rate is roughly (ranking)
2. SEVERITY FREQUENCY INDICATOR
FSI = √ (FR X SR) / 1000
F. SAFE T-SCORE (STUDENT-T TEST)
To compare the accident rate from one period to the next period to use the principle of student-t-test for
condition 'after - before' by the formula:
SAFE-T-SCORE =
Now FR - FR ago
_________________________________________________________
√ (Fr ago / number of hours people now) / 1 million
1. STANDARD DEVIATION 2
• If the Safe-T-Score -2.00 +2.00 and these changes were not statistically significant
• If the Safe-T-Score> +2.00 was statistically significant, the situation now is worse than the last period and that there's anything one in management safety health
• If the Safe-T-Score <-2.00 is statistically significant conditions are now better than ever
2. STANDARD DEVIATION 3
• If the Safe-T-Score -3.00 +3.00 and these changes were not statistically significant
• If the Safe-T-Score> +3.00 was statistically significant, the situation now is worse than the last period and that there's anything one in management safety health
• If the Safe-T-Score <-3.00 is statistically Air
