Just came across this, and wanted to share it. Haven't read the 13 pages yet, but the TOC lists Reported Explosions, Calculations, and Discussion.
Potential Explosion Hazards due to Evaporating Ethanol In Whisky Distilleries, HSL/2003/08, Project Leader: H. S. Ledin, Author(s): H. S. Ledin MSc PhD DIC, Science Group: Fire and Explosion Group, © Crown copyright 2003
Download Link: http://www.hse.gov.uk/research/hsl_pdf/2003/hsl03-08.pdf
Wasn't sure if i had enough download space left to upload the file myself. Attached is the PDF.
All in all, the report is quite reaffirming. Thanks for posting.