NMR PIPETECTOR Scientific Trial Installation Report, in UK
Anti-Corrosion Application for Central Heating System Palace of Westminster, Located in Westminster, London
Installation Purpose and Result
The Palace of Westminster is one of the most famous buildings in the United Kingdom. This building is situated on the North Bank of the River Thames, and was built in approximately 1860.
One of the buildings many central heating systems has major internal corrosion problems. For the complete protection of all the central heating pipework, one NMR Pipetector PT-75DS was installed on the central heating flow pipe on the 12th of April 2010.
Before NMR Pipetector was installed, the Fe ion content in the central heating water was 3.9mg/L. Only 4 days after NMR Pipetector was installed, the Fe content in water was decreased to 2.2mg/L. The Fe content in the water has been continuously reduced, and 12 weeks after NMR Pipetector was installed, Fe content in water was 1.48mg/L, which is fewer than half before the installation.
It means that new forming of corrosion (FeO(OH)) inside of the pipework was terminated, and the existing corrosion was reduced to magnetite (Fe3O4) which is not dissolved into the water and protects the inside of the pipe from corrosion. The inside of the pipework is protected from corrosion by magnetite, and the pipework can be used for the life term of the building.
Change of Fe content in water (mg/l)