Online HSE Tools

DROPF Calculator

DROPF Formula

Number of DROP cases x 2 000 000 / Quantity of manhours worked (Include staff and contractors.)

DROPF Example
  1. Number of DROP cases = 2
  2. Number of people (employee + contractors) on site in rolling 12 months = 40
  3. Quantity of manhours worked = 365 * 12 (hr/day) * 12 (month/year) * 40 (employee + contractors) = 175200

Result:

2 * 1 000 000 / 175200 = 11.42 DROPF