Solving the red rust and leakage issues of the air conditioning hot and cold water piping at the Millennium Hotel in the UK.

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

The Millennium Hotel London Mayfair is a historic building located in the heart of London, overlooking Grosvenor Square, which was once the residence of the Duchess of Kendal in the 18th century. To address issues of red rust and leakage in the air conditioning hot water piping, the "NMR Pipe Protector," a rust prevention and pipe longevity device that does not require pipe removal or water shutdown during installation, was installed. Before the installation of the NMR Pipe Protector, the iron content in the air conditioning hot water piping due to red rust was very high at 15.7 mg/l, indicating significant red rust deterioration and concerns about leakage. To prevent this red rust and leakage, the "NMR Pipe Protector" was introduced. Six weeks after the installation of the NMR Pipe Protector, the test results of the air conditioning hot water showed that the iron content in the water had significantly decreased to 0.157 mg/l, completely preventing new red rust in the air conditioning hot and cold water piping, and it was proven that the existing red rust had transformed into black rust, which is insoluble in water and has a volume one-tenth that of red rust. If the NMR Pipe Protector continues to be used, it has been demonstrated that all red rust in the piping will transform into black rust, preventing external corrosion and leakage, thereby extending the lifespan of the building.

Water Treatment