The rust removal operation for petrochemical storage tanks uses an explosion proof robotics system, the WallHiker EX-02, powered by high-pressure water jet technology to efficiently remove rust and paint, with a spraying system applied afterward on both internal and external tank walls. Operators remain safely outside the confined space, controlling the robot remotely with real-time video monitoring. Integrated with a wastewater recovery and filtration system, it prevents re-rusting and ensures environmental compliance. This innovative robotic approach delivers safer, faster, and higher-quality storage tank rust removal operations compared to traditional manual methods.