polyethylene containers double wall storage tank chemical storage tank POLYETHYLENE CONTAINERS It takes quite some time to empty an intermediate bulk container (IBC) and the risk of leaks or bad spills exists while the polyethylene containers are attached to the equipment. Should the hose fail or be pulled off the IBC, the entire polyethylene container could drain if unattended. More common is a simple leak, which tends to damage floors and frustrate plant maintenance personnel. All have the potential to be costly and very dangerous.