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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 14467229 - Struck By Collapsng Boom

Accident: 14467229 -- Report ID: 0626000 -- Event Date: 11/16/1984
InspectionOpen DateSICEstablishment Name
164849211/19/19841389Canyon Trucking Inc
InspectionOpen DateSICEstablishment Name
142959611/19/19841381Penrod Drilling Company Rig 136
THREE EMPLOYEES WERE WORKING NEAR THE CRANE DURING RIGGING UP OPERATIONS. A 136 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 GROUND, STRIKING EMPLOYEE #1 ON THE HEAD AND KNOCKING THE OTHER TWO EMPLOYEES TO THE 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 PUSHER FOR THE DRILLING COMPANY, WAS ALSO PERFORMING HIS NORMAL DUTIES AS SUPERVISOR 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 TAILCHAIN WAS MANUFACTURED BY LEBUS. IT WAS A 7/8 INCH STANDARD ALL ALLOY CHAIN USED WITH A STYLE "B" HOOK CHAIN. THE CHAIN AND HOOK WERE RATED AT 28,600 POUNDS. THE CHAIN SEPARATED AT THE WELDED JOINTS. THE WEIGHT OF THE LOAD AT THE TIME OF THE ACCIDENT WAS UNKNOWN.
Keywords: derrick, head, ppe, chain, rigging, crane boom, oil rig, crane
Employee # Inspection Age Sex Degree Nature Occupation
1 1648492 Non Hospitalized injury Bruise/Contus/Abras Occupation not reported
2 1429596 Non Hospitalized injury Bruise/Contus/Abras Occupation not reported
3 1429596 Fatality Concussion Occupation not reported

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