OSHA Accident Investigation · Summary #693549
C. W. WRIGHT CONSTRUCTION CO., INC.
FAIRFAX, VA·
Event description
CRANE OPERATOR INJURED WHEN CRANE TILTED INTO LOAD
Investigation abstract
AT APPROXIMATELY 9 AM ON SEPTEMBER 10, 1986, EMPLOYEE #1 WAS USING A MODEL PM 20 1 WAS OPERATING THE CRANE CONTROLS FROM A POSITION NEXT TO THE LOADED TRUCK. WHE N THE TRUCK MOVED FORWARD ABOUT TEN OR TWELVE FEET THE RIGHT OUTRIGGER SANK INTO THE SOFT GROUND. THE CRANE TILTED TOWARD THE SIDE OF THE TRUCK, PINNING EMPLOYE E #1 BETWEEN THE 2 VEHICLES. HE SUFFERED A BROKEN JAW, CRUSHED RIGHT HAND, 4 OR 5 BROKEN RIBS ON HIS RIGHT SIDE AND COLLAPSED LUNGS. THE ACCIDENT WAS CAUSED BY THE INSTALLATION OF AN INSUFFICIENT PAD UNDER THE RIGHT OUTRIGGER, AND THE FACT THAT THE OPERATION WAS ATTEMPTED AN UNSTABLE SOIL SURFACE. THERE WAS AN APPARENT LACK OF PROPER TRAINING BY THE EMPLOYER. 1 "POLE-MASTER" AS A TRUCK CRANE, ATTEMPTING TO UNLOAD A 5 FOOT CLAM BUCKET FROM A TRUCK PARKED BESIDE IT. THE CLAM BUCKET WEIGHED APPROXIMATELY 3515 LBS., WELL WITHIN THE CRANE'S CAPACITY. THE CRANE WAS RATED AT 9500 POUNDS. THE CRANE WAS SET UP ON SOFT, UNSTABLE GROUND (THERE WAS SOME STANDING WATER AT THE SITE). BOT H OF THE CRANE'S OUTRIGGERS WERE DOWN, BUT THERE WAS NO PAD UNDER THE LEFT OUTRI GGER AND ONLY A 19 INCH LONG 4 BY 4 UNDER THE RIGHT OUTRIGGER. THE CLAMBUCKET WA S ATTACHED TO THE LOADLINE. EMPLOYEE #1 TOLD THE TRUCK DRIVER TO PULL HIS TRUCK OUT FROM UNDER THE BUCKET AS SOON AS IT WAS LIFTED OFF THE TRUCK BED. EMPLOYEE #
Victim
-
#1 Hospitalized Age 19 M
- Nature of injury
- 12
- Part of body
- 19
- Event type
- 2
- Source
- 27
- Occupation code
- 869
- Human factor
- 1
- Environmental factor
- 8
- 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.