Flammable gases as fuel. History, present and future perspectives of using flammable gases. Energetical and environmental aspects of distribution. Natural resources and their charakter. Natural gas extraction, transport, storage, liquefaction and distribution. Gas pipeline network schema and creation. Transit, long-range pipelines and local network. Fuel gas properties. Gasworks energetics and advanced gas using technologies. Planning, management and balance of gas consumption. Design and construction of gaswork facilities.