Initiatives building a low-carbon society

FY2016 targets and results

Based on the Aichi 2020 Environmental Action Plan, we pursued reductions in carbon dioxide to achieve the targets of the Japan Iron and Steel Federation’s Low-carbon Society Plan (Phase 1).
We set our internal targets at even higher levels and took action, but we were unable to avoid the effects of the January 8 accident, and we did not achieve those targets.

Total CO2 emissions

636,000 t-CO2/year
(+34,000 tons year-over-year)

Total CO2 emissions

Breakdown of energy used in FY2016 (CO2 emissions)

Breakdown of energy used in FY2016 (CO2 emissions)

Factors behind changes since last fiscal year

Positive improvements

1. Electric furnace energy balance changed
(increase in aluminum dross), etc.
4,300 t-CO2/year
2. Productivity increased by re-engineering
the bloom rolling process (reduced furnace loss), etc.
3,700 t-CO2/year
3. Efficiency improvements in forging furnaces
(IH furnaces)
1,500 t-CO2/year
4. Consolidated lines by converting
stainless steel furnaces for general use, etc.
1,600 t-CO2/year
Total 11,100 t-CO2/year

Negative factors

1. Effect of accident at No.2 Bar Furnace
(reduced efficiency of furnace)
1,800 t-CO2/year
2. Steel plant environmental measures 3,300 t-CO2/year
3. Increased emissions dye to increased production 40,000 t-CO2/year
Total 45,100 t-CO2/year

Energy conservation in offices

We conducted the following activities during fiscal 2016. Going forward, we will investigate, analyze and follow energy efficiency at the new administration building with a view to making further improvements.

  1. Summer/winter measures to reduce electricity consumption
    • Promoting Cool Biz activities (Temperature set to 28°C)
    • Promoting Warm Biz activities (Temperature set to 19°C)
    • Installation of various energy-saving equipment at new administration building
  2. Other
    • Conversion from fluorescent to LED lighting at No. 2 Office building (first floor canteen and second floor offices)
    • In-house publications for Environment Month (June) and Energy Conservation Month (February)

CO2 emissions from administrative divisions

CO2 emissions from administrative divisions

Energy efficiency through logistics optimization

In accordance with the Energy Saving Act revised in April 2006, we have been working on efficient environmentally-friendly logistics optimization activities after understanding the flow of distribution and reviewing issues.

Specifically, we are visualizing the flow and quantities of products after shipment, our Steel Company is promoting logistics reform from the perspectives of eliminating backflow and redundant stock points and modal shift, and our Forging Company is doing the same from the perspective of loading efficiency improvements.

From fiscal 2006 to 2016, we achieved a 16% reduction in CO2 emissions per unit from logistics.

Measures to raise productivity and promote energy savings through 4S re-engineering*

We continue to undertake 4S Re-Engineering in order to raise productivity while promoting energy savings through all processes from steelmaking, which is an upstream production process, to rolling, refining, and forging.
Bloom rolling re-engineering has been conducted since February 2015 and process streamlining was completed in February 2016 as a first step, resulting in higher productivity and yields and reducing heating furnace fuel consumption per unit of production.

*Simple, Slim, Short and Straight process innovations

Bloom rolling re-engineering

Productivity 7.0% increase

Heating furnace fuel consumption
unit of production
7.3% decrease

(CO2 equivalent: 5,900 t-CO2 reduction since fiscal 2015)