Certain hotel #RF water supply piping red rust and leak prevention measures

Case study of introducing NMR pipe protectors for preventing red rust and extending the lifespan of hotel hot water piping.

At Hotel #RF, which was built 38 years ago, significant red rust corrosion of the vinyl-lined steel water supply pipes had progressed, leading to leaks from the joints. Therefore, a red rust prevention and pipe longevity device called the "NMR Pipe Protector" was installed. Before the installation of the NMR Pipe Protector, a white filter was attached to the water supply faucet, and after running water for four days, the filter turned brown due to the red rust that had developed inside the water supply pipes, revealing an iron content of 40 mg/l, indicating that the red rust corrosion in the pipes was quite advanced. One month after the installation of the NMR Pipe Protector, a white filter was attached at the same location and under the same conditions as before, and the iron content decreased to 23 mg/l. After six months of installation, the iron content further decreased to 14 mg/l, and the red rust inside the pipes transformed into black rust that does not dissolve in water, proving the rust prevention effect and longevity of the hot water supply pipes. At Hotel #RF, it has been verified that if the use of the NMR Pipe Protector continues, all red rust in the air conditioning chilled and hot water pipes will change to black rust, and the cost will be less than one-fifth of the pipe replacement work, allowing the pipes to last until the building's lifespan. Naturally, leaks have been completely prevented since then.

Water Treatment