OSHA Accident Investigation · Summary #693820
FRACTURE,CONSTRUCTION,TRENCH,VIBRATIONS,CRUSHED,SHORING,SLOPING,CAVE-IN,SPRAIN,LEG
Event description
EMPLOYEES INSTALLING SEWER PIPE, TRENCH COLLAPSED
Investigation abstract
AT APPROXIMATELY 10:30 AM ON NOVEMBER 24, 1986, EMPLOYEES #1 AND #2 WERE HELPING EMPLOYEE MANAGED TO GET OUT. EMPLOYEE #1 SUFFERED A COMPOUND FRACTURE OF HIS RI GHT LEG, JUST ABOVE THE ANKLE, AND EMPLOYEE #2 SUFFERED A SEVERLY SPRAINED LEFT ANKLE. TO INSTALL 8 INCH PVC SEWER PIPE IN A TRENCH. THE TRENCH WAS 9 FEET DEEP, 120 F EET LONG, 3 FEET WIDE AT THE BOTTOM AND 13 FEET, 6 INCHES WIDE AT THE TOP. THE T RENCH WAS UNSHORED AND INADEQUATELY SLOPED. THE SIDES OF THE TRENCH WERE WERE CO MPOSED OF SHALE, WITH LAYERS SLANTING DOWN TOWARD THE BOTTOM ON THE TRENCH'S SOU TH SIDE. A TRACK LOADER HAD BEEN TRAVELING ALONG THE SOUTH SIDE, DUMPING GRAVEL INTO THE TRENCH AT VARIOUS POINTS TO SECURE THE PIPE . THE TRENCH RAN EAST TO WE ST, TOWARD MAHHOLE #4. ABOUT 40 FEET EAST OF MANHOLE 4, THE SOUTH SIDE GAVE WAY AND SLID DOWN, TRAPPING EMPLOYEES #1 AND #2 IN THE BOTTOM OF THE TRENCH. A THIRD
Victims (2)
-
#1 Hospitalized Age 25 M
- Nature of injury
- 12
- Part of body
- 18
- Event type
- 1
- Source
- 12
- Occupation code
- 869
- Human factor
- 1
- Environmental factor
- 4
- Task assigned
- 1
-
#2 Non-hospitalized injury Age 41 M
- Nature of injury
- 20
- Part of body
- 18
- Event type
- 1
- Source
- 12
- Occupation code
- 869
- Human factor
- 1
- Environmental factor
- 4
- Task assigned
- 2
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.