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Occupational Safety and Health Administration OSHA

Inspection Detail

Inspection: 301314316 - System One Communications

Inspection Information - Office: Houston North

Nr: 301314316Report ID: 0626600Open Date: 02/04/1999

System One Communications
7900 Block Of Hollister/Northcourt
Houston, TX 77040
Union Status: NonUnion
SIC: 1623/Water, Sewer, Pipeline, and Communications and Power Line Construction
Mailing: 9901 Easthaven Blvd, Houston, TX 77075

Inspection Type:Accident
Scope:Partial Advanced Notice:N
Ownership:Private
Safety/Health:Safety Close Conference:03/26/1999
Close Case:05/27/1999

Related Activity:TypeIDSafetyHealth
 Accident101760502    

Violation Summary
Serious Willful Repeat Other Unclass Total
Initial Violations 2 2
Current Violations 2 2
Initial Penalty $3,000 $0 $0 $0 $0 $3,000
Current Penalty $1,500 $0 $0 $0 $0 $1,500
FTA Amount $0 $0 $0 $0 $0 $0

Violation Items
# ID Type Standard Issuance Abate Curr$ Init$ Fta$ Contest LastEvent
  1. 01001 Serious 19260251 A04 05/07/1999 05/11/1999 $750 $1,500 $0 I - Informal Settlement
  2. 01002 Serious 19260503 B01 05/07/1999 06/09/1999 $750 $1,500 $0 I - Informal Settlement

Accident Investigation Summary
Summary Nr: 201760766Event: 02/03/1999Employee Fell And Died In Tower Collapse
Some employees were erecting an antenna tower. They had assembled and erected the first 30 meters of the 73-meter-tall antenna the previous week. The antenna was to be made of twelve 6.1-meter-long sections. The antenna was supported with three guys, 120 degrees apart, attached at the 18-meter level. One employee was tied off at the top of the tower as a gin pole was being raised. The front end of the gin pole closest to the tower was approximately 3 to 6 meters above the ground with its back end touching the ground when the guy on the northeast leg of the tower failed and the tower collapsed. The employee on the tower was carried to the ground and trapped beneath the collapsed structure. He died of his injuries. The guy that had failed was on the opposite side from where gin pole was being lifted. The guy clamp supplied by tower manufacturer was apparently not the proper size for the guy in use. The clamp was designed for cables of 8 to 13 millimeters in diameter. However, the guy in use was only 6 millimeters in diameter. The guy clamp on the failed guy had two of its three bolts loose, but it could not be determined if they were loose at the time of the accident. It was believed that the rigging attachment point was too low, causing additional strain against the failed guy. The hoist had been set up in nearly a straight line to the lift and the guy that had failed rather than at the 90-degree angle to the tower specified in the National Association of Broadcasters Engineering Handbook. In addition, the tower being erected was larger but of lighter construction than previous towers the employees had erected.
Keywords: communication tower, collapse, equipment failure, crushed, guy, fall, tower
Inspection Degree Nature Occupation
1 301314316 Fatality Other Structural metal workers

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