The rust prevention effect of the NMR Pipe Protector - NMRPT - introduced at Christ's College, University of Cambridge: Part 3.
日本システム企画 東京本社
In 2013, the NMR Pipe Protector was introduced to the hot water air conditioning piping in the Todd Building of Christ College. Before installation, the iron content in the circulating water within the pipes was measured at 43.8 mg/L, indicating a high level of rust dissolution. Three weeks after the introduction of the NMR Pipe Protector, inspections showed that the iron content had decreased to 18.0 mg/L, demonstrating significant rust prevention effects. An inspection conducted about a year after installation revealed that the iron content had dramatically reduced to 0.5 mg/L, proving a rust prevention effect of 1/87 compared to the pre-installation level. This result indicates that the rust prevention effect of the NMR Pipe Protector led to the conversion of red rust to black rust within the pipes, resulting in a decrease in the iron content in the water. Considering that the water quality standard set by the Japan Refrigeration and Air Conditioning Industry Association is 1.0 mg/L for iron, the measured value of 0.5 mg/L in the Todd Building indicates good water quality. Thanks to the rust prevention effect of the NMR Pipe Protector, the red rust problem at Christ College has been resolved, allowing for the prolonged lifespan of the piping in the future. To date, the NMR Pipe Protector has proven its rust prevention effects in over 4,200 buildings and has received high praise.
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