Pipe anti-corrosion, Lions Mansion Koshigaya North has introduced NMR pipe protectors.

The installation of the rust prevention device "NMR Pipe Protector" on the water supply pipes has been confirmed through long-term verification that the black rust transformation of red rust inside the pipes progresses every year, improving the condition of the piping.

The "Lions Mansion Koshigaya North" in Koshigaya City, Saitama Prefecture, introduced the NMR Pipe Protector in November 2010, successfully reducing the cost of pipe maintenance to one-third of the amount originally planned for lining work in the long-term repair plan. Before the installation of the NMR Pipe Protector, and one year, five years, and ten years after installation, the rate of red rust blockage at the dissimilar metal joints, where red rust deterioration progresses the most, was continuously inspected, confirming that the rate of red rust blockage decreased over time. This indicates that the red rust is gradually transforming into black rust, which is one-tenth of its original volume. This has proven that the water supply pipes can be extended to the lifespan of the building. The management association effectively utilized the saved budget for projects such as converting lighting fixtures to LED. In addition to the LED conversion of lighting, the renewal of elevators is also being considered in the future. As a result, the NMR Pipe Protector has become a savior for the condominium. It has significantly reduced the costs of pipe maintenance, allowing the surplus budget to be allocated to other building facilities. **Results of the NMR Pipe Protector:** - No growth of red rust was observed in the endoscopic survey conducted six years after installation. - A reduction in the volume of red rust was noted, indicating that the transformation to black rust is progressing.

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