OSHA Accident Investigation · Summary #14198212
ELECTRICAL,ELECTRIC SHOCK,ELECTROCUTED,OVERHEAD POWER LINE,CONCRETE TRUCK,E C,BOOM,CONSTRUCTION
Event description
ELECTRIC SHOCK - CONTACT WITH OVERHEAD LINE THRU BOOM
Investigation abstract
Some employees were pouring concrete for the footer of a 24.4-meter by 7-meter b tanding under the power line, between the footer and a sidewalk in front of the pumping truck. Standing in the footer excavation, a second employee was holding the discharge hose, directing the flow of concrete. A third employee, who was al so in the footer excavation, was raking the concrete as it was poured. As he was moving the boom along to fill the footer with concrete, the operator brought th e boom into contact with the power line. The two employees in the excavation wer e electrocuted. Another employee, who was operating the hopper on the pumping tr uck, saw the two employees in the excavation and jumped in to help one of them. The would-be rescuer was also electrocuted. The driver of a concrete mixing truc k was off-loading his mixing truck into the hopper of the concrete pumping truck uilding. The excavation for the footer was 1.1 meters deep and 0.9 meters wide. . Before he entered the excavation, the would-be rescuer told the mixing truck d river to stop discharging concrete into the hopper. As the driver grabbed the le ver on his truck to stop discharging the concrete, he received an electric shock and was thrown to the ground. He was able to crawl away from his truck. The tru ck driver was hospitalized for his injury. Neither of the two employers involved had any type of safety program. The employees were using a Thompsen concrete pumping truck (Model No. TVS-36-14) with a three-section boom to pour the concrete into the footer. The boom had a vertical reach of 36 meters and a horizontal reach of 32 meters. The third secti on of the three-section boom articulated 270 degrees. The pumping truck was park ed 9 meters from a 12-kilovolt overhead power line located 14.6 meters above the ground. As the footer was being poured, the concrete pump operator was moving t he boom by a remote control box strapped around his neck and shoulders. He was s
Victims (6)
-
#1 Fatality Age 25 M
- Nature of injury
- 10
- Part of body
- 4
- Event type
- 14
- Source
- 15
- Occupation code
- 588
- Human factor
- 10
- Environmental factor
- 8
- Task assigned
- 1
-
#2 Fatality Age 25 M
- Nature of injury
- 10
- Part of body
- 4
- Event type
- 14
- Source
- 15
- Occupation code
- 588
- Human factor
- 10
- Environmental factor
- 8
- Task assigned
- 1
-
#3 Fatality Age 25 M
- Nature of injury
- 10
- Part of body
- 4
- Event type
- 14
- Source
- 15
- Occupation code
- 588
- Human factor
- 10
- Environmental factor
- 8
- Task assigned
- 1
-
#4 Hospitalized Age 31 M
- Nature of injury
- 10
- Part of body
- 4
- Event type
- 14
- Source
- 15
- Occupation code
- 804
- Human factor
- 10
- Environmental factor
- 8
- Task assigned
- 1
-
#981 Degree 0 Age 0
- Nature of injury
- 0
- Part of body
- 0
- Event type
- 0
- Source
- 0
- Occupation code
- 0
- Human factor
- 0
- Environmental factor
- 0
- Task assigned
- 0
-
#982 Degree 0 Age 0
- Nature of injury
- 0
- Part of body
- 0
- Event type
- 0
- Source
- 0
- Occupation code
- 0
- Human factor
- 0
- Environmental factor
- 0
- Task assigned
- 0
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.