Protecting the precious environment
We promote activities to protect and improve the global environment in alliance with partner companies.
Green procurement initiatives
Initiatives to select materials with smaller environmental footprint is called green procurement. As part of our green procurement initiatives, we investigated 14 green procurement materials for FY2019 and counted their quantity.
Going forward, we will review and add green procurement materials as necessary in consideration of green procurement results, social trends and other factors.
|Steel for electric furnace
|Blast furnace cement and
|Water-saving toilet bowl||1,000units||16||18||16||20||15|
|Rooftop and wall greening||1,000m2||4||9||11||11||9|
|SUS piping (water supply piping in communal areas)||t||105||98||84||53||29|
|Hf inverter lighting equipment||1,000units||18||24||39||50||128|
|Long vinyl sheets||1,000m2||196||297||280||383||369|
|Extruded polystyrene foam||1,000m3||ー||4||4||4||4|
|CFC-free urethane foam||1,000m2||ー||ー||ー||389||720|
* Data for extruded polystyrene foam since FY2016 and CFC-free urethane foam since FY 2018.
Blast furnace slag cement type B
Blast furnace slag cement type B, which is superior against cracks and in terms of chemical resistance, is mainly adopted in concrete piles. CO2 generated during cement production is the largest in volume during the manufacturing process of clinker, an interim product of cement. The production of blast furnace slag cement involves mixing large volumes of blast furnace slag fine powder into normal cement, which leads to a much lower composition ratio of clinker than in normal cement, and in turn, reduction of CO2 emissions.
In fiscal 2019, adoption of blast furnace slag cement type B was 210,240 m3, resulting in the reduction of CO2 emissions by approx. 23,550t.
Wood waste generated at construction sites is carried into a recycling facility and recycled into particle boards. The recycled particle boards are used at worksites once again, thus realizing cyclical material recycling. Compared to the process of manufacturing particle boards from raw wood, it not only leads to lower CO2 emissions but also helps protect forests, reducing the environmental burden.
In fiscal 2019, particle boards delivered totaled 3,520t, resulting in the reduction of CO2 emissions by 2,330t.
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