FY 2020 CSR website Site Reports > Zeon Corporation – Mizushima Plant

Zeon Corporation – Mizushima Plant
Mizushima Plant ProfileMain Products
Isoprene rubbers, thermoplastic elastomers, petroleum resins, synthetic aromas,
high-performance resins, RIM molded articles, isoprene monomers, butadiene monomers
Operations commenced in 1969. Mizushima Plant has facilities for extracting butadienemonomer from the C4 stream* and for extracting isoprene monomer from the C5 stream*,and produces various products using the C5 stream.
*C4 (GBP process), C5 (GPI process): Hydrocarbon molecules containing four and five carbon atoms,
respectively, produced as byproducts of thermal cracking of naphtha.

Aerial view of Mizushima Plant

Plant Policy by the Plant Manager
With the motto of “Let’s advance production innovations, business innovations, andprocess innovations with the culture of ABC” (atarimae, bakashojiki, and chanto, or in
English: to diligently and properly perform all routine but necessary tasks), we are working toentrench this ABC culture at Mizushima Plant and achieve these three types of innovations.
I believe that the basis for offering products of stable quality while placing the highest
priority on safety and environmental protection is employees’ full and steadfast compliancewith laws and regulations and adherence to the procedures, rules, and other matters thatthey have decided.
We have established the Monozukuri Training Center at Mizushima Plant to provide
company-wide operator education. The center accepts trainees from each plant andconducts basic education for working in a chemical factory to ensure that Zeon operators
can perform the routine but necessary tasks.
We are working to gain the trust of the local community and the wider public with acommitment to safe and stable operations achieved by entrenching the ABC culture andachieving the three types of innovations at Mizushima Plant.

Corporate Officer and Mizushima
Plant Manager
Makoto Watanabe

Safety Initiatives
Safety Policy
As a world-leading plant in the comprehensive use of C5 in integrated production from raw materials to finished products, andwith a commitment to contributing to society as provided for in Zeon’s CSR Policy, and to preventing accidents and disasters asprovided for in Zeon’s Safety Philosophy, we define our safety policy involving production activities for petrochemical products
as follows.
1. Safety takes precedence over all else; we implement safety measures, identifying the sources of risk and conducting
activities to reduce the risks, and we conduct thorough safety education and training on an ongoing basis.
2. We establish a Safety Management System and are committed to accident and disaster prevention; the Safety Management
System is regularly revised and improved to enhance its effectiveness.
3. We comply with safety-related laws and regulations, independently set targets for policy issues, and strive to improve thelevel of plant safety through activities that involve participation by all employees.
4. We pursue safe and reliable production through production innovations to create a workplace in which employees can workwith peace of mind, and which earns the enduring trust of the local community.
Specific Initiatives
・Distribute “memorial morning notes”
These notes are handed out on the day an accident occurred in the past as a way to keep alive the lessons learned from thataccident
・Four-round risk assessment drills
We hold this training together with affiliate companies to improve employees’ sensitivity to and promote higher self-awarenessof dangers.

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Environmental Impact Reductions
Environmental Policy
As a world-leading plant in the comprehensive use of C5 in integrated production from raw materials to finished products, andwith a commitment to contributing to society as provided for in Zeon’s CSR Policy, and to preventing accidents and disasters asprovided for in Zeon’s Safety Philosophy, we define our environmental policy involving production activities for petrochemical
products as follows.
1. Based on our company mission as a social institution, we build an Environmental Management System encompassing all ofour business activities, and we are committed to conserving the environment both at the local level and on the global scale.
2. We aim to achieve zero emissions and innovative energy savings, including through improvements to manufacturing
processes using proprietary technologies and taking proactive environmental measures in new product development.
3. We comply with environment-related laws and regulations, independently set targets for policy management issues, andstrive to continuously improve the environment through activities that involve participation by all employees.
4. We pursue safe and reliable production through production innovations to be a plant that earns the enduring trust of the localcommunity.
Scope of Environmental Management System(1) Name of: Mizushima Plant, Zeon Corporation
registeredorganization(2) Address: 2767-1 Kojima Shionasu Aza Niihama, Kurashiki City, Okayama Prefecture(3) Scope of: Manufacturing of synthetic resins, specialty chemicals, chemicals and synthetic rubbers
registeredactivities(4) Affiliated: Okayama Butadiene Co., Ltd. Mizushima Plant
companies
located in-plant
Scope of activities: Manufacture of butadiene monomer(5) Staff: All people who work at or for the plant
Specific Initiatives
1. Reducing emissions of hazardous chemical substances
・We have achieved zero atmospheric emissions of butadiene since FY 2002 and continue to take steps to reduce ouremissions of volatile organic compounds.
2. Reducing industrial waste
・Final landfill disposal target: 5 tons or less
・We are reducing the amount of waste we generate, reusing beverage bottles, and recycling plastics as solid fuels.
3. Conserving resources and energy
・Process stabilization
・Inspecting steam traps throughout the plant
・Improving unsatisfactory areas
4. Reducing impacts on water quality
・Strengthened management of treatment conditions (installed measurement devices in the wastewater treatment system)
5. Environmental data * “0” indicates less than 0.5 tons, and “0.0” indicates less than 0.05 tons
Mizushima Plant
Hazardous
substances

FY 2015

FY 2016

FY 2017

FY 2018

FY 2019

138,029

123,109106,970

122,217

93,1000.0

0.00.00.0

0.0476,200

408,600

428,684

485,100

389,200

6.5

5.4

4.4

4.4

3.8

69,82447,98045,17756,92751,569

Butadiene consumption (tons)
Butadiene emissions (tons)

Substances
subject to thePRTR Act

Consumption (tons)

Industrial
waste

Amount generated before compacting(tons)

Emissions (tons)-2-FY 2020 CSR website Site Reports > Zeon Corporation – Mizushima Plant

Amount generated after compacting(tons)

5,418

4,717

5,869

5,974

6,743

3.5

1.7

1.9

0.0

3.2

CO2 emissions (tons)

235,360

201,700

259,000

255,800

270,235

SOx emissions (tons)

1.1

2.2

0.1

0.4

3.8

NOx emissions (tons)

54

68

60

73

34

Soot emissions (tons)

0.0

0.0

0.0

0.0

0.0

Water resource consumption (1,000 m3)

2,510

2,487

2,250

2,629

2,461

2,411

2,313

2,088

2,335

2,237

COD emissions (tons)

15

12

13

1213

Total phosphorus discharge (tons)

0.4

0.5

0.5

0.5

0.6

Total nitrogen discharge (tons)

12

12

12

9

8

Consumption (crude oil equivalent, kL)

87,86077,626

96,576

95,830102,181

Unit consumption index (FY 1990 = 100)

45%

37%

46%

39%

50%

834,400

880,300

907,200

1,052,001

874,435

Amount sent to landfills (tons)

Atmosphericemissions(industrial water + groundwater + waterworks)

Total wastewater discharge (1,000 m3)
Wastewater

EnergyProduction equivalent (tons)

Relationship with Employees
PolicyFacilitate effective transfer of technologies and skills
Specific Initiatives
・Education at the Monozukuri Training Center at Mizushima Plant for employees in their first to third years of employment

Relationship with the Local Community
Thanks to the support of the local community, the Mizushima Plant marked 50 years ofoperations in July 2019.
The plant has collaborated with local communities and contributed to the development ofsociety and the region, and will continue to do so in the future.
Specific Initiatives
1. Contributing to the community through volunteering・Beautification activities in the area surrounding the plant (10 people total)
Cleanup volunteer activities

2. Interactions with the local community
・Autumn Festival: Around 170 family members of employees and local residents attended
the Festival・Summer Festival: Around 550 family members of employees and local residents attended
the festival
・Participate in community events including Bon dancing and making rice cakes・Participate in Responsible Care Council community dialogue events・Lecture at Kurashiki Technical High School

Walking for health-3-FY 2020 CSR website Site Reports > Zeon Corporation – Mizushima Plant

3. Plant tours
We give plant tours to introduce the plant’s production activities and initiatives.
・Okayama Prefectural Kurashiki Technical High School・Okayama Prefectural Mizushima Technical High School・Okayama Prefectural Okayama Technical High School・Okayama Prefectural Kurashiki Minami High School, etc.
Plant tours-4-