Hi All Colleagues, Can you help me where mention in BS the calculation formula the accident rate & frequency .

Thanks for your reply Jarsmith ,Yes I mean by BS =British Standard aslo i knowed the formula . Just need where written in BS about the calculation formula

So in which regulations or standard in UK mention about the formula. as in USA mention in OSHA the formula Number of accidents X 200,000 / the number of hours worked

ACCIDENT RATES There are various accident rates used to compare accident statistics. The most important aspect is to ensure that you use the same MULTIPLICATION FACTOR (MF) as used in the data you are comparing. There is no fixed multiplication factor (MF). The choice can be influenced by either the MF used in the data you are comparing or for the purpose trend analysis/projections, the rates have manageable “numbers”, i.e. not having too many zeros or decimal places! INCIDENT RATE= TOTAL NUMBER OF ACCIDENTS X 1000/NUMBER OF PERSONS EMPLOYED Definition:- number of accidents per 1000 employees A factor of 100 000 is used by HSE for the “AIR” i.e. number of accidents per 100 000 employees ) Definition:-number of accidents per 100 000 employees FREQUENCY RATE = TOTAL NUMBER OF ACCIDENTS X 1 000 000/TOTAL NUMBER OF MAN HOURS WORKED Definition:- number of accidents per 1 000 000 hours worked (Note:- Some tend to use a multiplication factor of 2 000 000 as this figure is the hours worked in a year by 1000 employees assuming they work 40 hours per week for 50 weeks in a year, others use an MF of 200 000) SEVERITY RATE= TOTAL NUMBER OF DAYS LOST X 1000/TOTAL NUMBER OF MAN HOURS WORKED (i.e. average number of days lost per 1000 hours worked) Definition:-average number of days lost per 1000 hours worked MEAN DURATION RATE = TOTAL NUMBER OF DAYS LOST/TOTAL NUMBER OF ACCIDENTS Definition:- average number of days lost per accident DURATION RATE=NUMBER OF MAN HOURS WORKED/TOTAL NUMBER OF ACCIDENTS Definition:- average number of man hours between accidents