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  3. Approaches to Environmental Issues
  4. Reducing Environmental Impacts
  5. Chemical Substances
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Chemical Substances

NEC carefully examines environmental impact and safety in all phases of handling chemical substances, from receipt and use to disposal. NEC takes all possible measures to reduce consumption of chemical substances and to replace harmful substances with safer ones.

Preliminary Evaluation of Chemical Substances

Since 1979, NEC has been conducting preliminary evaluations to examine environmental and safety aspects carefully when using a new chemical substance for the first time. These preliminary evaluations are a series of strict examinations of physical properties, toxicity, handling methods, emergency response, recycling methods, environmental impact, and other items related to chemical substances. Only substances that have passed these examinations are allowed to be purchased.
Safety data sheets (SDS) are prepared for all chemical substances used based on this detailed data. Manufacturing assessments are also carried out in all manufacturing processes to evaluate environmental and safety aspects.

Preliminary Evaluation System of Chemical Substances

Preliminary Evaluation System of Chemical Substances

Reduction in Use of Strictly Regulated Chemical Substances

  • Ozone depleting substances:
    The use of ozone depleting substances as cleaning agents in manufacturing processes was discontinued in 1993. By the end of FY 2011/3, the activity to totally discontinue the use of specific chlorofluorocarbon for refrigerant use in air conditioners and specific halon used in fire extinguishers achieved a reduction of 96%, almost accomplishing the milestone.
  • Dioxins:
    We discontinued the use of municipal waste incinerators in FY 1999/3. All industrial waste incinerators were shut down permanently in FY 2003/3.
  • Environmental endocrine disrupters:
    In FY 1999/3, we abolished the use of all agrochemicals and pesticides prescribed in Strategic Programs on Environmental Endocrine Disruptors (SPEED) '98 released by the Japan Environment Agency (currently the Ministry of the Environment).

Strict Control of Equipment and Parts Containing PCBs

At present, NEC strictly controls disposal devices (equipment and parts, including fluorescent light stabilizers) containing polychlorinated biphenyl (PCB) at its three plants and nine group companies, under stringent measures for preventing leakage.

Accompanying revisions to the Law Concerning Special Measures for Promotion of Proper Treatment of PCB Waste (emforced on August 1st, 2016), changes have been made to the processing period set in the basic plan for the disposal of polychlorinated biphenyls. In compliance with the change, NEC is pushing up plans to ensure that waste is processed within the set deadline.

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