2000-ton Butane Spherical Gas Storage Tank Construction Project at PENI Depot in Burkina Faso The project is undertaken by Joint Venture CGCINT-JIEC, whose main works include construction of a 2000-ton butane spherical gas storage tank at PENI depot of Burkina Faso National Hydrocarbons Company (SONABHY), including the supply and installation of a 4018 m³ spherical tank, as well as associated civil works, gas pipelines, fire pipelines, and electrical engineering construction.