Mass Balance of Business Operations

NEC uses mass balance to implement measures to reduce environmental impact. In FY 2005, absolute amounts were reduced for a lot of environmental impact items. In terms of input, electricity and fuel were reduced by 2% and 9%, respectively. However, gas consumption increased by 5%. Chemical substance consumption increased by 4% mainly due to the installation of new lines in one of NEC's semiconductor plants. Packaging materials also increased by 7%, while water and paper consumption fell by 12% and 22%, respectively. In terms of output, industrial waste emissions remained the same as in the previous year due to an increase in semiconductor processes; however, the rate of sales of industrial waste materials as resources increased. CO2 emissions were also reduced by 14,000 tons (1%) through higher production efficiency and installation of energy-saving equipment. In March 2002, the NEC headquarters, plants, research laboratories, and all manufacturing subsidiaries achieved zero emissions (i.e., all waste materials were recycled into resources).

FY2004 FY2003

Mass Balance of Business Operations

Tamachi Area Tamagawa Plant Fuchu Plant Sagamihara Plant Yokohama Plant Abiko Plant Tsukuba Research Laboratory

Input

Total input of parts and materials   Total parts and materials purchased for production other than chemical materials, paper, and packaging materials Electricity Electricity purchased from power companies for consumption in plants and offices Gas City gas and liquefied petroleum gas (LPG) consumed as energy Fuel Crude oil and kerosene consumed as energy Water Tap water, industrial water, and groundwater (excluding water for reuse) Chemical substances Chemical substances used in production and regulated by law (poisons, toxic substances, hazardous substances, organic solvents, specified chemical substances, and materials listed in Pollution Release and Transfer Registers [PRTR]) Paper Copying paper and computer paper used in plants and offices Packaging materials Paper and plastic packaging materials regulated by the Law for the Promotion of Sorted Collection and Recycling of Containers and Packaging

Output

Total weight of products shipped   Total weight of products produced in one year CO2 Carbon dioxide generated in the process of using electricity, gas, and fuels NOx Nitrogen oxide generated in the process of using gas and fuels SOx Sulfur oxide generated in the process of using fuels Wastewater Industrial wastewater from plants and offices and domestic wastewater BOD Biochemical oxygen demand - the amount of oxygen needed for pollutants (organic substances) in wastewater to be decomposed by microorganisms Municipal waste material All waste materials other than industrial waste materials generated in business operations (mainly including waste paper, used paper, cardboard, garbage, and wastewater) Recycling The use of waste materials as raw materials or resources through reuse, material recycling, or thermal recycling Material recycling The reuse of waste materials as raw materials (e.g., the recycling of waste paper, the purchase of recycled paper, and the chemical treatment of used chemical substances to convert and reuse them as other substances) Thermal recycling The incineration of waste materials and the use of the heat generated to produce hot water and electricity Industrial waste material Waste materials generated in the process of business operations and regulated by the Waste Disposal and Public Cleansing Law, including sludge, waste oil, waste acid, waste alkali, waste plastic, metal, glass, ceramics, and cinders. Reuse The reuse of waste materials without treatment (e.g., reusing packaging materials and chemical waste materials of high purity for other purposes) Landfill disposal The direct disposal of waste materials in a landfill without intermediate treatment such as reducing the weight or volume

• Promotion of Environmental Management
  • NEC Environmental Charter
  • NEC Environmental Management
  • NEC Environmental Management Vision 2010
  • NEC's Vision of a Sustainable Society
  • Environmental Management Concept - Ecology through IT
  • Mid-Term Environmental Plan
  • Environmental Management System
  • CO2 Emissions in Business Life Cycle
  • Mass Balance of Business Operations
  • Environmental Accounting
  • Environmental Management Indicators
  • Environmental Audits
  • Environmental Risk Management
  • Environmental Training and Awareness
  • Information Systems that Support Environmental Management
• Activities within Business Operations
• Tackling Environmental Problems
• Recycling-Oriented Activities
• Environmental Solutions
• Environmental Communications
• Social Contributions through Environmental Activities
• Efforts of Our Groups and Sites
• Efforts of Our Overseas Affiliates
• Milestones in Environmental Management