105,313Records 71,083Employers 85,290Hospitalizations 27,770Amputations 2015-01-01 2025-10-31
Safety Incidents OSHA Severe Injury Reports · 2015–2025

OSHA Accident Investigation · Summary #690784

FLAMMABLE VAPORS,EXPLOSION,TANK,ASPHALT

Event
FLAMMABLE VAPORS,EXPLOSION,TANK,ASPHALT
Linked inspection
No inspection record linked to this accident's victims.
Summary number
690784
Report ID
854910

Event description

ASPHALT TANK EXPLODED; EMPLOYEE KNOCKED DOWN BY CONCUSSION

Investigation abstract

EMPLOYEE #1, WHO WAS OPERATING AN ASPHALT PLANT, DRAINED ABOUT 9,000 GALLONS FRO M A 25,000 GALLON STORAGE TANK TO MAKE SOME ROOFING ASPHALT. THE ASPHALT TANK US ES FIRE HEATED TUBES, LOCATED AT THE BOTTOM OF THE TANK, TO HEAT THE ASPHALT. WH EN THE ASPHALT LEVEL REACHED 14,000 GALLONS, THE HEATING TUBES WERE SHUT DOWN. T HE TOP SUCTION TUBES AT THE THREE FOOT LEVEL WERE TURNED OFF AND THE BOTTOM SUCT ION TUBE OPENED. AN HOUR AND A HALF AFTER THE HEATING TUBES WERE SHUT OFF, THE T ANK EXPLODED. EMPLOYEE #1 WAS KNOCKED DOWN BY THE CONCUSSION, BUT DID NOT SUFFER ANY APPARENT INJURY.

Victim

  1. #1 Non-hospitalized injury Age 30 M

    Nature of injury
    6
    Part of body
    13
    Event type
    4
    Source
    23
    Occupation code
    779
    Human factor
    1
    Environmental factor
    18
    Task assigned
    1

Codes shown verbatim from OSHA's accident-investigation database. A human-readable decoder is coming in a future release once the accident_lookup2 dictionary is loaded.