Intraplate faulting and the resultant earthquakes are not well understood because of their complex distribution, long period of seismic recurrence, and poor exposure of surface rupture. Pre-existing weaknesses should be studied to understand intraplate faulting and earthquakes. We are developing a long-term project to understand Korean-type intraplate fault behavior and recurrence intervals. As the first step, we will establish an integrated system for production, analysis, and management of fault data related to active crustal deformation. Here we propose a new format for fault data description and management.