OSHA Accident Investigation · Summary #14467229
PENROD DRILLING COMPANY RIG 136
MIRANDO CITY, TX—
Event description
STRUCK BY COLLAPSNG BOOM
Investigation abstract
THREE EMPLOYEES WERE WORKING NEAR THE CRANE DURING RIGGING UP OPERATIONS. A 136 LCHAIN WAS MANUFACTURED BY LEBUS. IT WAS A 7/8 INCH STANDARD ALL ALLOY CHAIN USE D WITH A STYLE "B" HOOK CHAIN. THE CHAIN AND HOOK WERE RATED AT 28,600 POUNDS. T HE CHAIN SEPARATED AT THE WELDED JOINTS. THE WEIGHT OF THE LOAD AT THE TIME OF T HE ACCIDENT WAS UNKNOWN. FOOT DERRICK WAS BEING LIFTED FROM A TRUCK BED WHEN A TAIL CHAIN BROKE, CAUSING THE LOAD (DERRICK) TO SHIFT. THE BOOM TWISTED ABOUT 90% AND COLLAPSED TO THE GRO UND, STRIKING EMPLOYEE #1 ON THE HEAD AND KNOCKING THE OTHER TWO EMPLOYEES TO TH E GROUND. EMPLOYEE #1, A DRILLING SUPERINTENDENT, WAS OVERSEEING THE OPERATION. HE DID NOT HAVE A HARD HAT ON AT THE TIME OF THE ACCIDENT. EMPLOYEE #2, A TOOL P USHER FOR THE DRILLING COMPANY, WAS ALSO PERFORMING HIS NORMAL DUTIES AS SUPERVI SOR DURING THE RIGGING-UP OPERATION. EMPLOYEE #3, A TRUCK SWAMPER, WAS SIGNALING THE TRUCK DRIVER AS THE TRUCK WAS BEING REMOVED FROM UNDER THE DERRICK. THE TAI
Victims (3)
-
#1 Fatality Age 33 M
- Nature of injury
- 6
- Part of body
- 13
- Event type
- 1
- Source
- 27
- Occupation code
- 999
- Human factor
- 20
- Environmental factor
- 8
- Task assigned
- 1
-
#2 Non-hospitalized injury Age 29 M
- Nature of injury
- 3
- Part of body
- 19
- Event type
- 1
- Source
- 27
- Occupation code
- 999
- Human factor
- 7
- Environmental factor
- 8
- Task assigned
- 1
-
#3 Non-hospitalized injury Age 27 M
- Nature of injury
- 3
- Part of body
- 21
- Event type
- 1
- Source
- 27
- Occupation code
- 999
- Human factor
- 7
- 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.