The chemical substances handled during manufacturing at Canon include “controlled chemical substances” regulation in terms of adverse effect on the environment, human health and safety, and so forth. Canon separates these substances into three categories: A) Prohibited substances; B) Emission reduction substances; and C) Regulated substances. In turn, effective measures are in place for each category.
Canon engages in various initiatives at its operational sites to reduce emissions of controlled chemical substances, including reducing the consumption or re-use of chemical substances through improvement of production processes.
Canon Dalian Business Machines is trying to re-use or recycle solvents to help reduce VOC (Volatile Organic Compound) emissions. In 2017, the company posted a year-on-year reduction of 30% in VOC usage based on efforts to expand the types of solvents that could be re-used or recycled and related processes.
Canon Vietnam has cut its chemical usage by 7.0 tons via in-house manufacture of production tools for modifying amounts of coating oils or grease used in assembly processes (cutting oil usage by 4.4% and grease usage by 2.2%), alongside measures to improve coating operations and reduce the number of areas requiring coating.
Total emissions of controlled chemical substances in 2017 amounted to 600 tons. The increase compared with 2016 was minimal despite the addition of Canon Medical Systems and business expansion. Emissions per unit of sales improved to 0.0147 t/100 million Yen due to a range of emissions-reduction initiatives at sites.
Canon alleviates the environmental impact of its operational sites by reducing emissions of NOx*1 and SOx*2, where are major causes of air pollution and acid rain; reducing discharges of phosphates and nitrogen compounds, which cause the eutrophication of water environments; and, reducing BOD*3 and SS*4 indexes, which have an environmental impact on water environments.
To prevent air pollution, when installing or updating equipment that uses fuel, we opt for fuels that do not generate air pollutants (such as sulfur oxide, nitrogen oxide and soot), and have banned the use of heavy oil in principle.
Furthermore, we have designated ozone-depleting substances and persistent organic pollutants cited in the Stockholm Convention on Persistent Organic Pollutants as banned substances.
With regard to wastewater, each operational site sets its own levels based on those stipulated in local laws and regulations. We have 80% as an internal management value for those items, and we regularly check the status of compliance with management standards.
As a result of these initiatives, Canon’s emissions or discharges from its operational sites in 2017 again did not exceed established standards.
Canon places high priority on soil and groundwater protection. In line with this, we established the Canon Group’s Basic Policy on Soil and Groundwater Pollution and implement comprehensive measures based on it. In the unlikely event that soil or groundwater pollution is found at one of our operational sites, cleanup and remedial actions are carried out in close accordance with all relevant laws. In 2017, cleanups were completed at Canon’s Meguro and Kanuma sites in Japan, and the related regulatory filings were made.
Also, our standard when acquiring new land is to conduct a preliminary soil examination and carry out any other necessary procedures, such as soil remediation before making the purchase. We also monitor the chemical substances used at each site, remaining fully aware of the national and regional standards where each site is located in order to implement countermeasures according to the situation at each location.
Going forward, we will continue with the above initiatives and carry out monitoring and reporting of operational sites with completed remediation in a timely manner.
|Shimomaruko||Trichloroethylene, etc.||Water quality measurement|
|Utsunomiya parking lot 1||Fluorine and its compounds, etc.||Pumping, water quality measurement|
|Toride||Trichloroethylene, etc. Hexavalent chromium and its compounds||Pumping, excavation and elimination, water quality measurement|
|Bando||1,1-dichloroethylene, etc.||Pumping, covering, water quality measurement|
|Nagahama Canon||Hexavalent chromium and its compounds||Covering (soil pollution from soil improvement agents), water quality measurement|
In accordance with relevant laws, Canon strictly manages polychlorinated biphenyl (PCB), which damages living organisms and the environment.
As of December 2017, 14 operational sites were storing PCB waste. In terms of highly concentrated PCB waste, there are 22 capacitors and transformers and 1,922 fluorescent ballasts in storage.
This PCB waste is processed sequentially by the Japan Environmental Storage & Safety Corporation (JESCO).