Environmental Management

Why SUMCO Addresses Environmental Issues

From energy-saving initiatives to curbing greenhouse gas emissions and reducing waste, lowering the environmental load by the business activities of companies is a pressing task to ensure that the global environment is maintained and protected.
To ensure that the irreplaceable global environment is passed on to future generations, the SUMCO Group has established an environmental management system. We have obtained ISO14001 certification for all of our plants, and pursue initiatives aimed at protecting the environment.

SUMCO Environmental Policies

1. Basic Environmental Philosophy

As a manufacturer of high-quality silicon wafers for semiconductors and of quartz crucibles, SUMCO has established the following action guidelines and is committed to self-initiated and sustained environmental conservation activities to pass on the Earth's irreplaceable environment to future generations.

2. Environmental Action Guidelines

  1. Through our business activities, we shall pursue activities with an emphasis on the following points.
    1. (1) We shall act to conserve electricity and other energies consumed by our business activities, thereby curbing emissions of greenhouse gases.
    2. (2) We shall strive to reduce waste and increase recycling and reuse rates.
    3. (3) We shall strive to reduce and recycle water used in our business activities.
    4. (4) We shall strive to reduce chemical substances used in our business activities.
    5. (5) We shall thoroughly manage the harmful chemical substances and waste, thereby reducing the risks to the environment.
  2. We shall abide by environment-related laws and regulations, bylaws, and other agreed requirements.
  3. We shall strive to prevent environmental pollution in our entire business activities and undertake efforts to protect the global environment and coexist in harmony with local communities.
  4. We shall promote green procurement with our suppliers, thereby reducing environmental load.
  5. We shall define environmental objectives, and by periodically reviewing these objectives, shall promote continuous improvement of our environmental management system.

January 1, 2020

Environmental Management Structure

The SUMCO Group has established the Environmental Management Structure in which the Environmental Management Executive Officer, a member of the Board of Directors, appoints the Environmental Management Officer and the Environmental Managers at site, and defines their roles, responsibilities and authorities. Thoroughness of instructions and information sharing are ensured at meetings of the company-wide Environmental Management Committee and the Environmental Management Committee at each site, both of which are convened periodically. SUMCO's Environmental Management Executive Officer holds chief responsibility for issues related to climate change and has chief authority regarding those issues. The Environmental Management Executive Officer convenes meetings of the Environmental Management Committee and monitors SUMCO's efforts to address climate change.

Environmental Management Structure

Environmental Management Structure

Environmental Objectives

The SUMCO Group sets environmental objectives for each of its operating bases based on its Environmental Policies and the results of environmental load assessments that are conducted periodically. We implement initiatives to reduce environmental load and improve the environment in accordance with these objectives, such as reducing CO2 emissions, the usage of chemical substances, the generation of industrial waste and water consumption. The Environmental Management Committee reports the results of these initiatives and provides instructions on further steps which are used to create the plan for next year. The previous year's performance serves as the base value for these environmental objectives. Further, we verify our performance every six months and review the objectives as necessary.

2019-2022 Environmental Objectibes (set in 2019) and 2019 Results

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BM 2019 2020 2021 2022
Objectives Results Objectives Objectives Objectives
Reduction of CO2 emissions
Previous year's results 0.8% 0.9% 0.6% 0.6% 0.6%
Reduction of chemical substance use 0.6% 1.5% 1.4% 1.4% 1.4%
Reduction of industrial waste 1.6% 2.7% 1.7% 1.7% 1.7%
Reduction of water consumption 0.5% 0.6% 0.3% 0.3% 0.3%
  • *BM = Bench Mark
Reduction Objectives for Each Base of Operations (9 Manufacturing Bases in Japan)

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Site BM 2019
Reduction of CO2 emissions Reduction of chemical substance use Reduction of industrial waste Reduction of water consumption
Objectives Results Objectives Results Objectives Results Objectives Results
Kyushu Factory (Nagahama, Imari) Previous year's results 0.7% 0.8% 1.0% 3.1% 1.3% 4.8% 0.3% 0.3%
Kyushu Factory (Kubara, Imari) 1.0% 1.0% 0.6% 0.8% 0.3% 0.4% 0.4% 0.7%
Kyushu Factory (Saga) 0.5% 0.6% 0.2% 0.2% 0.3% 0.3% 2.3% 2.3%
Yonezawa Plant 0.8% 0.9% 1.4% 1.5% 7.3% 0.3% 2.0% 1.2%
Chitose Plant 0.1% 0.1% 0.0% 0.0% 1.8% 1.8% 0.7% 0.7%
JSQ Division 1.1% 1.8% 0.3% 0.3% 0.1% 7.9% 0.8% 0.8%
SUMCO Technology Corp. Noda Plant 1.1% 0.8% 0.4% 5.5% 1.0% 1.1% 0.0% 0.0%
SUMCO TECHXIV Corp. Nagasaki Plant 0.8% 1.0% 0.1% 0.1% 3.9% 3.9% 0.2% 0.2%
SUMCO TECHXIV Corp. Miyazaki Plant 1.3% 1.4% 0.5% 0.5% 0.1% 0.1% 0.3% 0.3%
Total 0.8% 0.9% 0.6% 1.5% 1.6% 2.7% 0.5% 0.6%
  • As our efforts for reduction in CO2 emissions, we have reduced electricity usage by installing high-efficiency air compressors at the Nagasaki Plant, replacing the air condition systems at the Yonezawa Plant and the Miyazaki Plant with more energy efficient systems, and others.
  • As our efforts for reduction in use of chemical substances, we have reduced chemical liquids usage by improving wastewater treatment methods at the Kyushu Factory (Kubara, Imari), and others.
  • As our efforts for reduction in industrial waste discharge, we have taken various measures such as lowering moisture content in sludge produced by the Kyushu Factory (Saga) and the Noda Plant, and selling acid waste liquid from the Yonezawa Plant to recycling companies.
  • As our efforts for reduction in water usage, we have reduced backup water stored by replacing cooling towers at the JSQ Division and the Yonezawa Plant, and others.

Long-term Goal for Reduction in Greenhouse Gas Emissions

Set in 2019
Objectives year in 2030
Long-term Goal CO2 emission per unit (Scope1+2)
14.9% reduction from 2014 (1.0% reduction every year)

Environmental Risk Management

The SUMCO Group identifies environmental risk for each organization's BSC, including risk related to climate. Identified risks are incorporated into an initiative plan for environmental risks such as nature disaster and abnormal weather under the BSC and environmental management system, after which they are reported to the Environmental Management Executive Officer.

Environmental Education

Education and Training Targeted at Suppliers to Increase Understanding of the Environmental Policies and Prevent Environmental Accidents

The SUMCO Group provides environmental education to supplier of chemicals and other products and to industrial waste treatment firms covering SUMCO's Environmental Policies, prevention of environmental accidents and compliance with laws and ordinances.

Contents of Education

PhotoPhotoSuppliers receiving environmental education on the prevention of environmental accidents

  1. Requests for vehicle inspections to prevent fuel, oil and other substances from leaking
  2. The importance of SUMCO personnel being present at the time of delivery or collection, and request that their instructions be followed
  3. Request for inspection of industrial waste collection vehicles, particularly to prevent leakage or dripping of sludge, liquid waste, etc.
  4. Introduction to actual environmental accidents that occurred at the Company in the past

Environmental Audits

Through the SUMCO Group, internal environmental audits are conducted by internal auditors, while environmental management system audits are implemented by an outside review organization.

Internal Environmental Audit

Internal environmental audits are annually conducted by internal auditors for all organizations in the SUMCO Group subject to the Company's environmental management system. The results are reported to the environmental management executive officer and reflected in the following year's activities to enable continuous improvement of the environmental management system.

Environmental Management System Audit

The SUMCO Group is subject to regular audits conducted every year and a renewal audit conducted every three years by an external independent auditor.

Compliance with Environmental Legislation

The SUMCO Group identifies the requirements of laws, regulations and agreements and verifies compliance.
We also ensure compliance with overseas chemical substance regulations, namely the Restriction on Hazardous Substances (RoHS) Directive and Regulation on Registration, Evaluation, Authorization and Restriction of Chemical Substances (REACH).

Progress of Soil and Groundwater Contamination Countermeasures

Accumulated Amount of Contaminated Substances Recovered Annually from Groundwater at the Noda Plant

In a voluntary survey implemented at the Noda Plant in 2005, it was found that amounts of volatile organic compounds (VOC) and fluorine exceeded the soil and groundwater environmental standard values. We have been pursuing countermeasures in consultation with relevant parties. At present, we are working to prevent the spread of and recover contaminated substances by using a pumping well set up near the boundary of the plant grounds.

In 2018, there were no new incidents related to industrial water/wastewater.

ISO 14001 Management System Certificate