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  7. In order to switch the water pipe in the Nishiya water purification plant without water interruption, we will carry out the largest “non-water interruption branch construction” in Japan.

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In order to switch the water pipe in the Nishiya water purification plant without water interruption, we will carry out the largest “non-water interruption branch construction” in Japan.

Last Updated August 28, 2024

Press release materials

August 28, 2024

Water Works Bureau Facility Maintenance Division

Hitoshi Tsuruga

Phone number: 045-337-0870

Fax: 045-337-0861

 At the Nishiya Water Purification Plant (Hodogaya Ward), large-scale redevelopment work is being carried out to improve earthquake resistance and increase processing capacity.
 Prior to the construction of the filtration pond, we will carry out the largest “non-water cutoff work” in Japan to switch the water pipes (diameter 2m, burial depth about 10m) laid in the Nishiya water purification plant without water interruption. . Non-cutoff branching work is a special technology of water supply that extracts branch pipes from the water main without stopping water flow.
 Since the non-water cutoff work with a diameter of 2m is a valuable opportunity with very few achievements, we will disclose the state of the work to the press.

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Water Works Bureau Facility Maintenance Division

Telephone: 045-337-0870

Telephone: 045-337-0870

Fax: 045-337-0861

Email address: su-shisetsuseibi@city.yokohama.jp

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Page ID: 738-444-100

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