Abstract: A process plant (1) for handling combustibles fluids, for example an oil production plant in which gaseous hydrocarbons are separated from oil and in which surplus gases or residual gases from uncontrolled build-ups of gas pressure in the process escape through process or safety valves in the plant and are conducted to a collection line (9). The surplus or residual gases are conducted via the collection line (9) to one or more low-pressure stores (2) and a connection line or return line (11, 3) is arranged from the store(s) (2) to the process or another treatment unit for processing the returned or collected fluid. The low-pressure store(s) can expediently comprise the crude oil or raw product store (2) of the process plant upstream of the process plant.