OSHA Accident Investigation · Summary #14202345
CONCRETE SLAB,FRACTURE,REBAR,UNDERPINNING,COLLAPSE,CEILING,INDUSTRIAL TRUCK,PAPER MACHINE,CONTUSION,SCAFFOLDING
Event description
CONCRETE FLOOR SLAB COLLAPSE WHILE BEING REMOVED FROM BELOW
Investigation abstract
On March 13, 1987, three employees were cutting and removing a section of concre tion of floor slab falling and striking the three employees working below it. Th e three employees were on scaffolding or a staging work platform. It is possible that this accident occurred during the process of removing the ceiling jacks or braces and installation of the forklift unit which was being used to remove sec tions. Employee #1 was seriously injured sustaining a severely broken left leg a nd right ankle. Employee #2 sustained minor bruises and a broken rib as he pushe d Employee #3 clear of the falling slab. Causal factors included lack of written demolition plan, lack of adequate underpinning and possible lack of adequate su pervision on site at the time of the accident. Also, a lack of rebar at the brea king point of the concrete slab was found. te slab flooring in a paper mill. The section being removed was approximately 30 ft by 10 ft with a thickness of 8 inches. Due to the paper machine being locate d on the floor and being kept in operation during this process, the work being d one by the three employees was being done from below or under the floor being re moved. The employees were cutting, coring and removing this 30 ft by 10 ft secti on in approximately 6 ft by 4 ft sections. Ten of these sections had been succes sfully removed prior to the accident. During the removal of the last two section s, an unplanned collapse occurred resulting in approximately a 6 ft by 10 ft sec
Victims (3)
-
#1 Hospitalized Age 27 M
- Nature of injury
- 12
- Part of body
- 16
- Event type
- 1
- Source
- 8
- Occupation code
- 599
- Human factor
- 4
- Environmental factor
- 6
- Task assigned
- 1
-
#2 Non-hospitalized injury Age 27 M
- Nature of injury
- 3
- Part of body
- 21
- Event type
- 1
- Source
- 8
- Occupation code
- 599
- Human factor
- 4
- Environmental factor
- 6
- Task assigned
- 1
-
#3 Non-hospitalized injury Age 27 M
- Nature of injury
- 3
- Part of body
- 21
- Event type
- 1
- Source
- 8
- Occupation code
- 599
- Human factor
- 4
- Environmental factor
- 6
- 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.