The Yokohama City Waterworks Bureau has verified that there is no rust prevention effect in areas with low water usage.
The Yokohama City Waterworks Bureau has verified that the red rust prevention device "NMR Pipe Protector" does not demonstrate rust prevention effects when the water usage is below the specified level.
The Yokohama City Waterworks Bureau conducted tests to confirm the effectiveness of rust prevention and residual chlorine reduction in the Tsurumi Public Housing water supply pipe (first test) and the verification of residual chlorine reduction in the water distribution pipes (main water pipes) (second test). Based on these tests, they selected residential areas with a low number of water contracts and low water usage to determine how little water usage is acceptable for the application of the NMR Pipe Protector. In March 2016, they used a 50A water branch pipe and chose the Teramae 2-chome area and the Konan Chuo area, which have a small number of households, to conduct tests on the rust prevention and residual chlorine reduction effects of the NMR Pipe Protector. The guideline for demonstrating the rust prevention effect of the 50A piping requires a daily water usage of about 15 tons, which is needed for approximately 30 households. In contrast, in the Teramae 2-chome area, there are only 18 households downstream of the sampling location, while in the Konan Chuo area, there are only 3 households downstream of the sampling location. In both areas, the minimum water usage required for the NMR Pipe Protector to function effectively could not be secured, and therefore, its effects were not clearly observed. It was determined that the application of the NMR Pipe Protector in the Teramae 2-chome area and the Konan Chuo area was unsuitable, and the verification of the rust prevention effect of the NMR Pipe Protector, along with the associated residual chlorine reduction effect, was concluded as there were no suitable locations for the NMR Pipe Protector in areas other than these two.
- Company：日本システム企画 東京本社
- Price：Other
