Environmental Management

Building and operating an environmental management system to promote an active approach to environmental conservation initiatives.

Global Warming Countermeasures

CO2 emissions in fiscal 2015 totaled 174,000 tons for the domestic sites, a decrease of 29% since fiscal 2005. Fiscal 2005 is currently the base year for the greenhouse gas reduction targets to which Japan has made international commitments. In addition, while our target was to reduce CO2 emissions on a per-unit of production basis by 1% year on year, the actual result was a rise of 9%.

  • Reducing Power for Compressor: Chiba Works
Drying blower fans use after the pre-coating treatment

By using blower fans to replace the compressed air previously used to dry the coil springs after the pre-coating treatment, electricity consumption has been cut by 70,000 kWh p.a. (37 tons of CO2).

  • Reducing Power for Cooling Water Pump: Chiba Works
Water tank control panel

When the time came to update the aging control panel for the water tank, we converted the cooling water circulation pump to use an inverter. By using pressure control to limit the speed of the electric motor, we are working to reduce electricity consumption and CO2 emissions.

  • Reducing Ignition Gas: Mitsubishi Steel Muroran Inc., Muroran Works
Preheating the ladle

The two pieces of equipment used to preheat the steelworks ladle were updated with an energy-saving type of generator burner with high waste heat efficiency. As a result, we have achieved reductions in the amount of ignition gas used in the steelworks of 12% over the previous level.

Reducing and Recycling Waste

We are working on initiatives to reduce and recycle waste generated by operational activities.

  • Reducing Oily Water from the Air Drain: Chiba Works
Compressor room
Drain processing equipment

Managing Environmental Impact

In order to reduce our environmental impact we are working to grasp the effects of our operational activities on the environment, while taking further steps to comply with environmental laws and regulations.

  • Reducing Odors: Hirota Works
Using casting-line fan to eliminate odors
Eliminating odors from the ducts of the mold manufacturing workshop

Odors from the resin incorporated into the mold, generated when the molds are manufactured and when molten steel is poured into the mold, were dissolved and removed by means of a neutralizing agent, resulting in an improved work environment within the factory and preventing emissions outside the factory.