Osaka City University (OCU) has been studying evacuation plans in cooperation with the Tsunami Countermeasures Working Group in Osaka City since 2017.

Due to the tsunami damage caused by the Nankai Trough Megathrust Earthquakes, as the five gulf wards including Konohana-ku, Minato-ku, Taisho-ku, Nishiyodogawa-ku and Suminoe-ku are assumed to be flooded, it is necessary to secure evacuation facilities outside of tsunami flood prone area beyond administrative districts, and activities for evacuation behavior plans have been promoting.　

Based on simulated damage (flooded area by tsunami and the number of secondary evacuees) estimated by OCU last year, as well as evacuation measures (tentative proposals) formulated in each ward, a pilot training was carried out at Minato-ku, for the first time among the five gulf wards, on 21 August to examine issues concerning the secondary evacuation behavior by the desk-top training which reproduced the secondary evacuation behavior on the map. 

This training was conducted on the assumption of residents evacuating to the elementary school and then performing the secondary evacuation to Osaka Castle Park, and reproduced evacuation behavior every hour on the map. Researchers and city officials discussed through repeated trial and error to find the most appropriate evacuation behavior.

A desk-top training drill on the map for the entire five gulf wards are scheduled in early September.