Prompt: Create a 3D rendering of a protective guard for an oil drum. The drum should have dimensions of approximately 550mm in height and 313mm in diameter. Given the weight of the drum when full, design the guard such that it can open like a door for easy access. The guard should be circular, split into two halves, with one half fixed with hinges to allow it to open and close like a door. The guard should be designed to provide stability and support to the drum, without obstructing the drum's access.