sentences:  A system for the removal of fuel from the cavities at a much higher flow-rate of around 25,000 cubic metres per day had been installed as part of the original design.This involved the use of two water-pumping stations at Acton Bridge on the River Weaver connected to Plumley by two water mains.This system, however, could only be used in an emergency as it would wash out some of the cavity until after two such operations it would fail.