Environmental impact reduction
We prepare data to show aggregate inputs to and outputs from manufacturing operations of the entire Group engaged in at all domestic and overseas sites.
1. Environmental performance values in this report have been rounded up for convenience; therefore the sum of individual values may not match
2. "Discarded materials" indicates the total amount of industrial waste and valuables.
3. CO2 conversion factors (kg-CO2/unit) used in calculating NGK's CO2 emissions on a non-consolidated basis are as follows (units are
indicated in parentheses):Purchased electric power (kWh): 0.42, Fuel oil A (liters): 2.677, Diesel fuel (liters): 2.64, Kerosene (liters): 2.49,
City gas (Nm3): 2.29, LPG (kg): 3.007, LNG (kg): 2.70, Gasoline (liters): 2.322 Sources: The Federation of Electric Power Companies
of Japan (actual figures for fiscal 1990), Ministry of the Environment. Some factors calculated independently by NGK have been used.
Incidentally, the fiscal 2016 energy-origin actual CO2 emissions volume for NGK on a non-consolidated basis is 146x103 metric tons
when using the CO2 conversion factor provided by the Order for Enforcement of the Act on Promotion of Global Warming
Countermeasures (revised in May 2016).
In fiscal 2016, we steadily progressed with CO2 reduction plans to achieve annual targets.
We are striving to raise manufacturing efficiency at our overseas sites through applying innovative processes and improvements to facilities and operations practiced in Japan.
We work to reduce CO2 emissions from logistics mainly through raising loading efficiency and promoting a modal shift.
We began introducing green power (based on wind, solar, biomass and other renewable sources) in 2002.
We implement measures to reduce environmental impacts stemming from our production operations, such as improving production efficiency, promoting the collection and use of exhaust heat and introducing highly efficient equipment.
In fiscal 2016, we exceeded the annual targets, which resulted from the Manufacturing Division's outperforming efforts to improve the material utilization rate, particularly through in-process reuse of materials, and production yield for each process.
At the NGK Group, we promote resource recycling initiatives, pursuing rigorous sorting and separating practices and seeking out new methods of recycling.
In order to improve the efficiency of water usage, we perform water risk assessments at all manufacturing sites in addition to implementing voluntary water usage guidelines.