[NMR Pipe Protector Verification Results] St. Ignatius Church

A case where it was confirmed that the red rust inside the piping is in a good condition and not dissolving in water!

St. Ignatius Church, also known as the Catholic Kojimachi Church, is a historic church adjacent to Sophia University that has existed since before the war. Four years ago, it was found that the red rust deterioration in the air conditioning chilled and hot water piping, which is 19 years old, was progressing. Therefore, an evaluation of the rust prevention effect of the "NMR Pipe Protector," a red rust prevention extension device, was conducted. Before the installation of the NMR Pipe Protector, a sample of the circulating chilled and hot water was taken, revealing that the water was brownish in color. Water quality testing detected a total iron concentration of 240 mg/l, indicating significant progression of red rust corrosion within the piping. After installing the NMR Pipe Protector, a water sample was tested two weeks later, showing that the water had become almost clear, with the total iron concentration due to red rust reduced to 2.7 mg/l, a significant decrease. At the same time that the progression of red rust was halted, the surface red rust within the chilled and hot water piping and the red rust in the water transformed into inert black rust that does not dissolve in water. This provided verification of the rust prevention effect of the NMR Pipe Protector within the chilled and hot water piping. This result was featured in an article published on July 18, 2018, in issue 2737 of "Air Conditioning Times," which reported on the verification of the rust prevention effect of the NMR Pipe Protector at St. Ignatius Church.

Piping Materials