The invention relates to a method of draining heat-transfer oil in a solar power plant, and to equipment for draining, storing and repositioning heat-transfer oil in order to implement said method.

If an owner obstructs a drain, the obstruction may be removed at his expense.

French drain prevents problems and improves the performance of your new installation of drainage for foundations.

Furthermore, a closable leached water drainpipe (2) leads from each aeration chamber, whose outlet end opens out into a drainage device.