OSHA Accident Investigation · Summary #14470967
ACCURATE CORING
CHICAGO, IL·
Event description
FOOT AMPUTATED WHEN STRUCK BY CONCRETE SAW
Investigation abstract
ON JANUARY 7, 1987, AT APPROXIMATELY 2 PM, EMPLOYEE #1 WAS CUTTING A CONCRETE WA AT TH WALL'S SURFACE. THE UNSECURED SAW BECAME AIRBORNE, STRIKING EMPLOYEE #1'S RIGHT ANKLE AND AMPUTATING HIS FOOT. LL WHICH WAS ABOUT 18 INCHES THICK, USING A LONGYEAR MODEL 360 CONCRETE SAW. THE SAW WAS WALL-TRACK MOUNTED, USING HILT WALL ANCHORS. ONE OF THE ANCHORS WAS NOT PROPERLY INSERTED INTO THE WALL (IT PROTRUDED APPROXIMATELY 1/2 INCH FROM THE W ALL SURFACE). BEFORE THE ATTACHMENT BOLT WAS INSERTED THROUGH THE SAW'S MOUNTING BRACKET, THREE FLAT WASHERS AND ONE LOCK WASHER HAD BEEN PLACED BENEATH THE BOL T'S HEAD. THIS 1 3/8 INCH BOLT DID NOT ENTER THE WALL. IT WAS SUPPORTED ONLY BY THE PORTION OF THE ANCHOR THAT PROTRUDED FROM THE WALL. ON THE FOURTH CUT, WHEN A 42 INCH DIAMETER BLADE WAS USED FOR THE FIRST TIME, THE WALL ANCHOR BROKE OFF
Victim
-
#1 Hospitalized Age 27 M
- Nature of injury
- 1
- Part of body
- 18
- Event type
- 1
- Source
- 26
- Occupation code
- 999
- Human factor
- 1
- Environmental factor
- 5
- 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.