| Case Name |
Under the installation of the beam, a worker was wedged between steel plates because of the landslide disaster |
| Pictograph |
|
| Place |
The M City |
| Location |
The construction of N sanitary sewage branch line |
| Overview |
This disaster is gravel decay in the soil pipe construction. The gravel against the steel plate decayed, after two steel plates were stood against the both sides of a reclaimed surface instead of sheeting sheet pile, and a worker who had entered the inside died. |
| Incident |
The gravel of the excavation groove decayed, and the steel plate fell. |
| Sequence |
When the victim descended in the groove, after he drilled the groove in order to bury the soil pipe, and after standing two steel plates against the both sides of the reclaimed surface instead of sheeting sheet pile, and when it was formed between the steel plate, a worker who had entered the inside died. |
| Cause |
* It was a condition that it was easy to decay because there was back-filled soil nearby the excavation position.
* In spite of the possibility of the gravel decay, he came into the excavation groove.
* The procedure of safe excavation is not known to everybody.
* The operation chief did not sufficiently fulfill his job.
* The investigation of the excavation position was not sufficient.
* Safety and health management system was insufficient.
* The safety and health education was insufficient.
* The manager did not consider sufficiently prevention of the labor accident during construction. |
| Countermeasures |
* They should adopt the method to that they can work without coming into the groove during the assembly of the sheeting timber support.
* Work plans should be decided based on the result of the subsurface exploration.
* The diagram is made beforehand in assembly of sheeting timber support.
* The safety standard of working should be established.
* The operation chief must direct the procedure of safe working. |
| Knowledge Comment |
* The importance of the operational procedure.
* The importance of the preliminary survey. |
| Reason for Adding to DB |
This is the typical disaster in buried pipe laying operation. |
| Scenario |
| Primary Scenario
|
Carelessness, Insufficient Precaution, Ignorance of Procedure, Disregard of Procedure, Insufficient Analysis or Research, Insufficient Prior Research, Insufficient Analysis or Research, Insufficient Environment Study, Poor Value Perception, Poor Safety Awareness, Organizational Problems, Poor Management, Regular Operation, Nonobservance of Procedure, Regular Movement, Careless Movement, Bodily Harm, Death, Psychological Harm, Mental Trauma, Loss to Organization, Social Loss
|
|
| Sources |
Res. Inst. of Industrial Safety.
|
| Number of Deaths |
1 |
| Number of Injuries |
0 |
| Physical Damage |
The indistinctness |
| Financial Cost |
The indistinctness |
| Economic Loss |
The indistinctness |
| Consequences |
The indistinctness |
| Field |
Civil Engineering
|
| Author |
Fujimoto Masaru (KUMAGAI GUMI Co., Ltd.)
|
