Pipe anti-corrosion: Yokohama City Waterworks Bureau conducts effectiveness verification of NMR pipe protectors (1)
The Yokohama City Waterworks Bureau has verified the effectiveness of the NMR pipe protector in preventing red rust and reducing chlorine for disinfection in the water supply pipes at the Tsurumi public housing.
At the Yokohama City Waterworks Bureau, a demonstration test was conducted at the 20-year-old Tsurumi water reservoir's attached public housing to prevent the formation of red rust in the water supply pipes, thereby addressing the issue of reduced chlorine concentration in the water due to red rust. The test utilized the water supply pipe from the vacant bathroom of Room 102. The piping materials used included polyethylene-lined steel pipes in the shared areas and resin pipes in the exclusive areas, where red rust had formed at the pipe joint sections. Before the installation of the NMR pipe protector, the iron concentration in the stagnant water of the bathtub's water supply valve at night was 0.27 mg/L, with a residual chlorine level of 0.11 ppm at that time. Additionally, over the two weeks prior to installation (with water flowing for 3 hours each day), the amount of red rust accumulated on the faucet filter was 13 mg/L, indicating significant corrosion of red rust at the pipe joint sections.
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Subsequently, we installed the NMR Pipe Protector, a rust prevention device, in the water supply piping (50A) for the entire Tsurumi dormitory. One week after the installation of the NMR Pipe Protector, the iron content in the overnight stagnant water from the bathtub faucet, sampled under the same conditions as before installation, decreased to 0.15 mg/L, while the residual chlorine increased to 0.56 ppm, five times higher than before installation. This demonstrated that the NMR Pipe Protector completely halted the new rust deterioration, converting the surface of the existing red rust into passive black rust, and stopping the reduction of chlorine. Four weeks after installation, the iron content in the same bathtub faucet's overnight stagnant water was 0.14 mg/L, proving that the rust prevention effect of the NMR Pipe Protector was sustained, with the residual chlorine also showing a high concentration of 0.52 ppm. Additionally, the amount of red rust attached to the filter before installation, which was 13 mg/L, drastically reduced to 4.8 mg/L under the same conditions four weeks later, demonstrating the rust prevention effect of the NMR Pipe Protector and its ability to reduce the outflow of red rust by converting it to black rust.
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Cumulative number of installations exceeded 4,200 buildings! *As of March 2020
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~Extending the lifespan of old piping~ "NMR Pipe Protector" Cumulative installation record surpassing 4,300 buildings! (As of March 2022) Among them, over 3,000 installations in condominiums. = Domestic Achievements = New Chitose Airport Domestic Terminal, JR Sapporo Station (JR Tower Building), Imperial Theatre Building (Tokyo Marunouchi), Yaesu Exit Hall, Famous Bookstore Building (Shinjuku), Hotel Toyokaku (Kyoto), Hotel Serve Shibuya, Care House Shirasagi (Saitama), Kawanishi Private Kushi Elementary School, Food Processing Factory, Major Automobile Manufacturer Factory (Fukuoka Prefecture), Kumamoto Red Cross Hospital, etc. = International Achievements = Buckingham Palace, London City Hall, British Museum, BBC, Christ's College, University of Cambridge, Royal Bank of Scotland, Harrods Department Store, Royal Garden Hotel London, UK Parliament, etc. ★ Featured in the Media "NMR Pipe Protector" ★ Selected as one of the top 10 rust prevention technologies in the world in 2020 and introduced in a U.S. magazine! Case studies and customer testimonials have been featured in many media outlets, including TV Tokyo's "World Business Satellite (WBS)," TOKYO MX's "Corporate Spirit," and specialized newspapers "Condominium Management News" and "Air Conditioning Times."