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#1 Posted : 16 June 2017 14:05:10(UTC)
Rank: New forum user

We had the above question and I lost the plot. 264,000 man days were worked on a site. We had x1 reportable accident. Can someone please confirm what the accident rate figure would be per 100,000 workers?

I have hit a mental blank. I have researched and would also like to know the current construction industry reportable accident rate per 100,000 workers as the more I read the more confused I get!

I normally use the calcualtions below but that gives a 0.3 something when I think it should be a 3. something? Please help and stop me going mad!  

  • AIR) Accident incident rate used = no of reportable accidents x 1000 divided by total number of operatives.                    
  • AFR) Accident frequency rate – no of reportable accidents x 100,000 divided by number of hours worked.

Edited by user 16 June 2017 14:06:36(UTC)  | Reason: spelling mistake

#2 Posted : 16 June 2017 14:19:20(UTC)
Rank: Super forum user

Depends on the number of hours worked each day ( and overtime) but :-

Accidents        Days    Hrs/Day           total hours       constant          AFR

1                  264000            8              2112000          100000            0.047348485

1                  264000            10            2640000          100000            0.037878788

1                  264000            12            3168000          100000            0.031565657

Edited by user 16 June 2017 14:27:11(UTC)  | Reason: WEb site didn't like table of info- looked ok until save

#3 Posted : 26 June 2017 10:05:58(UTC)
Rank: New forum user


Any time i am working this out i use the calcuation of number of incidents (RIDDOR Reportable, Lost Time Medical Tratment etc) x 100,000 / number of manhours worked.

There is some guidance on this availble on the HSE website.

hope this helps.


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