PROCEDE ET DISPOSITIF DE MISE EN GAZ D'UNE LIGNE DE DISTRIBUTION DE GAZ CORROSIF

摘要

Passivating a distribution line for handling a reactive or corrosive gas includes initial conditioning of the line followed by cycle(s) in which the gas is supplied to the line as far as a downstream system and then evacuating the gas from the line without passing it through the system. Subsequently gas is supplied to the line for supplying to the downstream system. An Independent claim is included for the an arrangement for performing the above process has a first stop valve supplying the gas to the line, a second stop valve connecting the line to the downstream system and between them is a device for supplying inert gas to the line and evacuating the inert gas from the line. The device enables the reactive gas to be purged from the line without passing through the system. Preferred Features: The purged gas is analyzed for the presence of water and then passes through an absorption column. The number of cycles is sufficient that on the last cycle no water is detected.