Abstract of Special Research Report (SRR-No.28)
National Institute of Occupational Safety and Health, Japan
A Study on the Prevention of Accidents Caused by Human Errors in the Construction Work (Midterm Report)
Introduction
SRR-No.28-1 |
Takahiro NAKAMURA |
: The death toll of the labor accident decreases gradually for the long term. However, the decrease rate shows the tendency to become duller recently. In the background, some factors might exist; 1) As the working environment has been improved than before, it would be difficult for the workers to recognize the risk in the working environment. 2) As the workers should do more advanced and complicated work, the hazard of the disaster become more complex. 3) As the number of experienced workers has decreased gradually, it would be difficult to follow the knowledge and the technique concerning safety management. 4) As the workers have less experiences of the disaster, their sensitivity to risk would become dead. From the end of past century, the social and economical environment which surrounds workers have changed greatly, and the characteristics of the labour accidents might change more and more, too. It should be necessary to make a new paradigm in the approach of the labor accident prevention in the near future. |
A Survey on the Unsafe Behavior and its Prevention Measures at Construction Sites
SRR-No.28-2 |
Takuro SHOJI and Yoshiyuki EGAWA |
: Due to the efforts of researchers, companies, and government resulting in advances in safety technology, improvement of the working environment, development of machines, and the various countermeasures of the industry, the number of labor accidents in the construction industry in Japan has dropped to lower than in previous years. However, the speed of reduction has decreased in the last several years. Recently, accidents caused by human error or unsafe behavior have come to make up a large portion of all the labor accidents. |
Changes of Working Behaviors by Spreading Safety Information in Construction Sites
SRR-No.28-3 |
Tsuyoshi SAITO and Hiroyasu IKEDA |
: In order to investigate into the change for the safety behavior of workers by spreading safety information in construction sites, the survey and experiments were carried out. These outlines about the survey and experiments were as follows. |
Ergonomics Study on High-Rise Working Conditions in Construction Sites
SRR-No.28-4 |
Yoshiyuki EGAWA, Shin-nosuke USUI, Takuro SHOJI and Takahiro NAKAMURA |
: The number of deaths in industrial construction accidents was 644 in 2001. The largest cause was falls, killing 262 workers and constituting 40.7% of all deaths. Fall accidents have constituted around 40% over the last 10 years, and the number is not declining. |
A Study on the Task Performance on the Different Thermal Conditions
SRR-No.28-5 |
Takahiro NAKAMURA, Kiyoshi FUKAYA and Sonoko MANNEN |
: As construction works are often operated in outdoors, workers are affected by work environments. Especially in summer, workers suffer from heat stress in addition to physical work load. While the measures of effective prevention against heat stroke have been considered in the industrial hygiene field, prevention of human errors during work in hot environment is not taken adequately. There are no criteria for stopping or continuing work from the viewpoint of safety. But it is known that the task performance deteriorates in uncomfortable environment, and there seems to be the high possibility of occurrence of human errors or accidents during work in hot environment. |
Eye Movement and Fixation in the Excavator Operation
SRR-No.28-6 |
Takahiro NAKAMURA, Kiyoshi FUKAYA and Sonoko MANNEN |
: The simulator is a remarkable tool for safety education and training, and it is considered to be useful as an experimental approach as well. Nakamura et al. (2001) measured eye movement of excavator operators through the experiment using the simulator. They discussed the fundamental factors to acquire visual information, which affect the useful field of view, such as experiences, mode of the operating levers, and so on. |
Influences of Time-Pressure in the Excavator Operation
SRR-No.28-7 |
Takahiro NAKAMURA, Kiyoshi FUKAYA and Sonoko MANNEN |
: In the construction work, there are time related factors such as the insufficient time allowances, the impending of the complete date, and the several stresses in the emergency (recoveries of mistake, weather influences, etc.) and so on. These factors are regarded as the background factors of the occupational injuries, because they might cause the omission, shortening and turbulence of the procedure as the result of making haste, impatience and panic. |
Development of Excavator Accident Simulator
SRR-No.28-8 |
Kiyoshi FUKAYA, Takahiro NAKAMURA and Sonoko MANNEN |
: An excavator accident simulator is developed in order to study on the effect of quasi-experiences of accidents. This development is made from the point of view that quasi-experiences of accidents are believed to be effective for safety training for acquiring sense of danger and motivation for safety. |