Abstract
The Relational Information System for Chemical Accidents Database (RISCAD) has been developed and operated on data concerning fires, explosions, and leakage accidents related to chemical substances, chemical processes, high-pressure gases, and explosives. In RISCAD, to understand the complicated accidents easily, some of the accident data are linked to "the accident progress flowchart," which shows the time line and the cause analysis of each accident. In order to make these accident progress flowcharts, the accident analysis called the "Progress Flow Analysis (PFA)" was conducted. This analysis method is also useful for increasing the safety awareness of companies. In this paper, the outline and development process of RISCAD are introduced, and the procedure and application of PFA for industrial safety are reported.