Protecting the Atmospheric Environment

Examples of Initiatives

By strengthening our measures for fixed emission sources, we are working on reducing our various environmental impacts, including emissions of soot and dust from boilers, leaks of fluorocarbons from refrigeration equipment, emissions of mercury from industrial waste incinerators, emissions of chemicals and VOCs from manufacturing plants, and airborne asbestos from the demolition of buildings.

  1. Reining in PM2.5* Emissions
    We conduct detailed surveys of boilers, gas turbines, heating furnaces, dry furnaces, cracking furnaces, waste incinerators, and other such equipment, testing for emissions of VOCs and other gaseous atmospheric pollutants, soot, SOx, NOx, and hydrogen chloride, which are also the source of secondary particles and PM2.5. We strive to further reduce emissions for each source.
    • Particulate matter of up to 2.5 μm in diameter
  2. Managing Fluorocarbon Refrigeration Equipment
    As part of efforts to protect the ozone layer and combat global warming, we are systematically upgrading fluorocarbon refrigeration equipment (units that use CFCs, HCFCs, HFCs) employed in production processes to equipment that uses HFCs with a low global warming potential (GWP) or non-fluorocarbon refrigerants. Our goal is to complete these upgrades within the upgrade deadlines for the equipment.

    Upgrade Deadlines for Each Type of Equipment
      • CFC equipment: Eliminate use of these units by fiscal 2025 (currently a total of 32 units held by the Group)
      • HCFC equipment: Eliminate use of these units by fiscal 2045 (currently a total of 260 units held by the Group)

    We aim to dutifully adhere to this plan, which, in line with the Act for Rationalized Use and Proper Management of Fluorocarbons, includes regularly examining the fluorocarbons used in industrial refrigeration and air conditioning equipment, devising ways of minimizing leaks identified in equipment designated as needing attention based on leakage history cat-egorized by equipment type, as well as taking thorough, swift action once problems related to equipment installation are uncovered.

  3. Emissions of Mercury into the Atmosphere from Waste Incinerators
    We measured concentrations of mercury (both gas and particles) emitted into the atmosphere by our waste incinerators, which we own, and completed a study of the impact of these emissions. The results have confirmed that mercury is being effectively removed by emission gas removal equipment, including bag filters and scrapers installed at incinerators, and that the concentration of mercury released into the atmosphere from all of the incinerators we own is within the emission guideline value set under the Air Pollution Control Act.