Examples of damage caused by localized heavy rainfall <Materials being presented>

We will introduce examples of accidents that have occurred in the workplace in the past, such as the incident where five workers were swept away.

In recent years, natural disasters have been frequent in Japan, with some region in the country being affected by disasters every year, resulting in significant damage. On August 19, 2009, a flash flood occurred in a drainage channel flowing through Higawa in Naha City, Okinawa Prefecture, sweeping away five workers who were working near the entrance to the underground section of the channel. The related catalog provides detailed explanations of examples of damage that occurred at actual work sites, including an overview and the weather conditions at the time. Understanding what events have occurred in the past may lead to increased awareness of safety at nearby sites. Please feel free to download and take a look. 【Damage Case】 <CASE 1: Flash flood in a drainage channel in Naha City, Okinawa Prefecture, sweeping away five workers, four of whom died> ■ On August 19, 2009, at 2 PM, a flash flood occurred in a drainage channel flowing through Higawa in Naha City, Okinawa Prefecture. ■ The water depth before the increase was estimated to be about 30 to 50 centimeters. ■ According to the Okinawa Meteorological Observatory, the atmospheric conditions above the site were unstable at the time of the incident, with a thunderstorm warning issued in the morning and a heavy rain and flood warning issued in the afternoon. *For more details, please refer to the PDF document or feel free to contact us.

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