The 'Buncefield incident' occurred on 11 December 2005 at the Hertfordshire Oil Storage Terminal, an oil storage facility located near the M1 motorway by Hemel Hempstead in Hertfordshire, England. The terminal was the fifth largest oil products storage depot in the United Kingdom, with a capacity of about 60,000,000 gallons of fuel. A simple tank overfill event that escalated into catastrophic explosion and fire, causing significant damage to the terminal and surrounding business and residential neighbors.
The UK Health and Safety Executive (HSE) prosecuted the 5 operators of the terminal. At the end of the trial in June 2010, Gordon MacDonald, the then Director of Hazardous Installations Directorate (HID) for HSE, issued a challenge to high hazard industries on behalf of all the United Kingdom Competent Authorities to answer the above mentioned three questions from the boardroom: 1) 'Do we understand what can go wrong?', 2) 'Do we know what
system are in place to prevent this happening?' and 3) 'Do we have assurance that these systems will work?'
See [https://www.youtube.com/watch?v=5LCRsYVnEx4 this] video