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Occupational Safety and Health Administration OSHA

Inspection Detail

Inspection: 102346483 - Richard Knutson, Inc.

Inspection Information - Office: Milwaukee

Nr: 102346483Report ID: 0523400Open Date: 05/20/1991

Richard Knutson, Inc.
Cty. Hwy. B & Silver Lake Streets
Oconomowoc, WI 53066
Union Status: Union
SIC: 1623/Water, Sewer, Pipeline, and Communications and Power Line Construction

Inspection Type:Accident
Scope:Complete Advanced Notice:N
Ownership:Private
Safety/Health:Safety Close Conference:05/30/1991
Planning Guide: Safety-Construction Close Case:08/19/1993
Emphasis: N:Trench

Related Activity:TypeIDSafetyHealth
 Accident360405120    

Violation Summary
Serious Willful Repeat Other Unclass Total
Initial Violations 1 1
Current Violations 1 1
Initial Penalty $5,000 $0 $0 $0 $0 $5,000
Current Penalty $5,000 $0 $0 $0 $0 $5,000
FTA Amount $0 $0 $0 $0 $0 $0

Violation Items
# ID Type Standard Issuance Abate Curr$ Init$ Fta$ Contest LastEvent
  1. 01001 Serious 19260550 A15 I 06/04/1991 06/10/1991 $5,000 $5,000 $0 06/24/1991 W - Empr Withdrew

Accident Investigation Summary
Summary Nr: 14500623Event: 05/20/1991Electric Shock - Contact With Overhead Line Thru Boom
AN EMPLOYEE HAD CARRIED A 10-FOOT-LONG SECTION OF 12-INCH-DIAMETER CULVERT TO A POINT IMMEDIATELY SOUTH OF A BACKHOE BEING USED TO FILL A SEWER TRENCH. THE CRAWLER-MOUNTED BACKHOE WAS NORMALLY OPERATED ON THE NORTH SIDE OF THE TRENCH, WHERE THERE WAS ADEQUATE CLEARANCE FROM A 4800-VOLT OVERHEAD POWER LINE THAT WAS NEARBY. AT THE TIME OF THE ACCIDENT, THE EQUIPMENT WAS APPARENTLY BEING USED ON THE SOUTH SIDE OF THE TRENCH. THE EMPLOYEE SIGNALLED THE BACKHOE OPERATOR TO POSITION THE BOOM SO THAT HE COULD USE A CHAIN SLING TO ATTACH ONE END OF THE CULVERT TO THE BOOM. (THE CULVERT WAS TO BE USED IN A VERTICAL POSITION WITH A PUMP.) THE EMPLOYEE ATTACHED THE CHAIN THROUGH A HOOK ON THE BUCKET. THE BACKHOE OPERATOR RAISED THE BOOM INTO THE POWER LINE, AND THE EMPLOYEE WAS ELECTROCUTED. THE OPERATOR RECEIVED ELECTRIC SHOCKS ON DISMOUNTING AND REMOUNTING THE BACKHOE. HE THEN SWUNG THE BOOM AWAY FROM THE LINE. (THE INJURIES TO THE OPERATOR WERE NOT LISTED ON THE OSHA 170 FORM.)
Keywords: backhoe boom, overhead power line, electrical, boom, electrocuted, e c, electric shock, backhoe
Inspection Degree Nature Occupation
1 102346483 Fatality Electric Shock Occupation not reported

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