Control and automation of the Manchester to Liverpool sludge pipeline of the North West Water Authority. II

For pt.I see ibid., vol.3, no.4, p.225 (1989). The author looks at the scheme for the construction of a 58 km pipeline to pump sewage sludge from Manchester to Liverpool via a total of five pumping stations with an additional input of sludge at Warrington Sewage Works. Each pumping station has its own dedicated processor in the form of a programmable logic controller (PLC) to start, stop and control the complete pumping station operation. The whole pipeline performs as a fully integrated system on automatic control