According to preliminary figures, in 2010, IBERDROLA checked around 77,300 kilometres of its power lines in Spain. This campaign aims to reinforce security of supply and continue to improve the quality of service it offers.
The company inspected the very high-, high- and medium-voltage lines used to supply peak summer and winter electricity demand.
IBERDROLA carried out routine inspections of more than 31,100 kilometres of lines and rapid inspections of 16,300 kilometres. These reviews are designed to detect potential problems in the components at its facilities, e.g. insulators, conductors, iron fittings, pylons, etc., caused by lightning, fallen trees, construction work or buildings close to the lines, etc.
The company also conducted a comprehensive review of the electricity pylons and the measurements required to detect potential anomalies in 7,100 kilometres of lines.
Using thermographic analysis, it reviewed another 21,600 kilometres of lines. This entails examining the power infrastructure using infrared cameras carried by helicopter or by a team of workers on foot. The temperatures of the installations are measured to detect and correct any points where they are too high –hot spots - and to ensure supply in the event of a peak in demand.
Finally, IBERDROLA carried out cleaning work in power line corridors, felling and cutting back trees threatening to hit the lines covering some 1,200 kilometres.
The inspection campaign forms part of the company’s endeavours to reinforce its electricity installations as a means of enhancing the quality and security of supply.
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