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Land, Infrastructure, Transport and Tourism Increase the Drainage Pump at the Takahashi Drainage Plant to the largest drainage capacity in the Kyushu region


Left: Drain pump impeller (Φ2600mm), Right: Engine room Left: Drain pump impeller (Φ2600mm), Right: Engine room

Ebara Corporation (hereinafter referred to as "Ebara") has carried out modification work on three drainage pumps at Takahashi Drainage Pumping Station (hereinafter referred to as "the Station") in Takeo City, Saga Prefecture. By increasing the displacement by 1.2 times compared to the previous model, this plant has the largest total displacement capacity (61m3) in the Kyushu region. 3 /sec).

1. Background

This station is a large facility with a drainage capacity of approximately 50 tons per second, but suffered flooding caused by river overflowing due to heavy rains in 2019 and 2021. As a result, under the national emergency flood control project, construction work to modify the pump equipment to increase the drainage capacity has been carried out over a three-year period since 2021.

2. Overview

In this construction project, we were able to increase the total discharge volume by making use of the existing equipment and increasing the pump rotation speed. Each year, one pump was taken back to the Futtsu Plant in Chiba Prefecture for maintenance, and the reduction gears were replaced. Maintenance and renovation work is carried out during non-flood seasons when water levels are low. *1 This allowed the work to be completed safely without affecting the operation of the plant.

Construction specifications
(excerpt)
Movable blade vertical axial flow pump (2600VSKGT type)
Φ2600mm×20.4m 3 /sec×3.2 m
Fixed blade vertical axial flow pump (2600VSGT type)
Φ2600mm x 20.4m 3 /sec×3.2 m
1 unit

2 units
 
Construction Period February 9, 2021 - March 31, 2024
Construction site Takahashi area, Asahi-cho, Takeo City, Saga Prefecture
Client Kyushu Regional Development Bureau, Takeo River Office

3. Future Plans

Ebara's long-term vision, "E-Vision 2030," aims to support "an earth-friendly society, social infrastructure that allows people to live safely and securely, and a world where people do not have to worry about water or food," and to "contribute to the creation of a sustainable society."
The EBARA Group will address material ESG issues based on its long-term vision and medium-term management plan in order to achieve the Sustainable Development Goals (SDGs) and further increase its corporate value.

*The "XXX type" indicated in the text is our model code.
*1: The period from autumn to spring when there is no rainy season or typhoons.