ENDE Transmisión, Ende Corporation, maintenance in a reserve reactor did (coil high voltage) in the Santivañez 230 KV substation, part of the interconnection trunk system (STI). The availability of these reserve reactors is of the utmost importance to an eventuality of unavailability of the other 6 reactors in service.

The maintenance of the reserve reactor consisted of changing a radiator following a leakage of Oil detected during monthly inspection works.The escape was located in the union of the main ducts to the cooling radiator, which prevented its repair, reason by which was decided to replace the entire radiator.

The radiator replacement works were completed successfully and without any incident, in addition The hermeticity review of the unit was carried out, being fully operational for use according to request.

To carry out this maintenance activity in the substation, a equipment of oil filtering called ETEA 500, with which the oil level was lowered inside the tank that It contains the reactor, in such a way that it allowed the extraction of the radiator without the oil spill. All work stages such as being disassembly and assembly of the radiator, were carried out with personnel specialized technical and professional transmission.