- Suppressing long-term corrosion of outdoor equipment in order to extend the life of its anti-rust coating and reduce maintenance costs -
Most communication cables are housed inside metal pipes. When a metal pipe has corroded severely, an attempt is made to suppress further corrosion. This attempt consists of: (1) removing rust from the pipe, (2) applying an undercoat of epoxy resin paint and (3) coating the pipe with polyurethane resin paint. This has to be repeated every 10 to 15 years. Problems with this approach are that it is difficult to keep up with the increase in the number of corroding metal pipes and that the maintenance cost tends to increase.
In response to these problems, this technology satisfies the following needs:
Major features of this technology are: (1) anti-rust wool wax cream and (2) coating technology (Fig.1).
This technology makes it possible to extend the cycle of repairing corroding metal pipes, to implement planned maintenance and to reduce maintenance costs.
* Maintenance by rust prevention technology
Fig.1 Features of the bridge equipment maintenance technology (long-life anti-rust technology)
Fig.2 Results of tests of the longevity of anti-rust wool wax cream
By applying this technology to corroding metal pipes, it is possible to extend the lifetime of the anti-rust coating to 40 years, which is three times longer than that possible with the conventional method.