The idea of construction and content of petrochemical equipment failure database as the foremost work in risk assessment system was put forwarded,which is of reference for the construction of RMS in Chinese petrochemical plants.

Discusses application of the concept of planoriented CAD software in developing boiler plant steam and water system CAD software, which includes open equipment database, 3D design environment and management of design knowledge, accordingly sets up a whole model for developing and implementing CAD software.

Through comparing and analyzing these simulation systems with different characteristic,it proposes the necessary and the feasibility about establishing a collaborative virtual reality system based on Web chemical equipment database,and simply describes the key technologies to achieve this system structure.