TDK’s Environmental Report 2000

Contents
Responding to the Challenge of Zero Emission

1

TDK Environment Charter2

Corporate Set-up for Environmental Protection
The Self-promoting Environmental Target
and TDK’s Environmental Efforts
Developing Environmentally Friendly Products

3

Green Purchasing

8

The Self-declared Environmental Mark

9

Zero Emission Strategy

10

Preventing Global Warming

12

Management of Chemicals

14

Pollutant Release and Transfer Registers (PRTR)

15

Environmental Management System (EMS)

16

Preserving the Earth’s Environment at Production Sites

17

Environmental Activities Overseas

18

Employee Education

19

Industrial Safety and Health

20

Community Activities

21

Environmental Costs

22

Chronology of TDK’s Environmental Protection Efforts

23

Corporate Data

24

Data of Environmental Burden at Major TDK Facilities

25

Facilities with ISO 14001 Certification

26

Fiscal 1999 Data by Facility

27

Contact

53

4
6Concerning this report
This is TDK’s second annual environmental report; the first was released
in 1999. This report has been prepared to focus on a number of highpriority topics emerging from the environmental efforts conducted by the
TDK Group.
TDK’s Environmental Report 2000 was compiled on the basis ofresults recorded by the TDK group as a whole, from April 1, 1999, to
March 31, 2000. The report also contains sections relating details ofactivities taking place from April 1, 2000, on and provides a preview of
future activities.
Note: References to a fiscal year in this document pertain to the period
beginning on April 1 of the year named and ending on March 31 of thefollowing year. Thus, fiscal 1999 covers the period from April 1, 1999, to
March 31, 2000.

With the arrival of the twenty-first century, we have entered theera of the environment. The era of mass consumption of natural
resources through large-scale production and indiscriminate
disposal of waste is over. We must strive to become a resourcerecycling society, concentrating our accumulated wisdom on
the continuing search for sustainable development based on
coexistence with the earth’s environment.
For businesses, this new era presents new challenges.
We must respond to a business environment that is changing rapidly and becoming more
dynamic, so that we can continue to succeed. And at the same time we must ensure that our
responses are environmentally sound. TDK’s “Exciting 108” medium-term plan provides aframework that helps us meet both objectives. Established in 1999, Exciting 108 helps us continue
to be an exciting, dynamic company and expand our corporate values. And it also sets forth a Zero
Emission Strategy to guide us as we actively work toward the realization of a resource-recycling
society. Our original target for achieving zero emission was March 2006, but we have decided tomove the target ahead two years as trends such as the shrinking number of waste-disposal sites
have become more apparent. By March 2004 we intend to be an eco-factory, restricting emissions
and reusing materials to the greatest extent possible and converting any unavoidably generated
waste into resources through recycling.
We have also responded swiftly to the ISO 14001 standard, which establishes criteria for
operating facilities in an environmentally sound fashions. We have already obtained certification
for all of our domestic production and research and development facilities, and are steadily
proceeding with related efforts at our overseas offices. By implementing an environmental
management system based on ISO 14001, we are making continual efforts to reduce theenvironmental impact of our products and operations.
In April 1999 we also began to incorporate environmental considerations into decisions
made in our production systems. We introduced environmental product assessments and “green
purchasing“ into our product development procedures and have initiated a campaign to produce
lead-free electronic parts.
No company can survive without coexisting with the earth. TDK employees are dedicatedto preserving the environment, accepting the challenge to take action now to achieve sustainable
development for the future. I hope that this publication will help you to better understand TDK’s
environmental efforts and activities.

Hajime Sawabe
President and CEO

1

Corporate Motto“Contributing to culture and industry through creativity”

Corporate Principle
Employees attribute “vision,”“courage,”“trust”

TDK Environment Charter
Basic Principle
The global environment is the womb supporting all life forms on Earth. Recognizing thisbasic principle, TDK is committed in all its business operations to handing over a morewholesome environment to future generations.

Basic Policy
TDK is committed to a resource-recycling society. All our corporate activities are geared
toward this basic policy. We pay attention to the protection of the environment, theconservation of energy and resources, and all other factors that may affect the global
environment.

Action Program
As a good corporate citizen, TDK pursues its corporate motto by operating in a way that
constantly considers the effects of its actions on the global environment and natural
resources. To this end, we have established the following guidelines;
1. Establish a corporate organization under the leadership of a board director to promote
and implement environmental management policies.
2. Uphold all laws and regulations related to the protection of the environment and raise
the level of environmental management.
3. Enforce environmental auditing and promote voluntary enforcement of environmental
management.
4. Issue environmental management provisions and annual reports on environmental
management and constantly update environmental management standards.
5. Create products that are compatible with the company’s policy of reducing theenvironmental burden on Earth. This requires that we conduct assessments onenvironmental safety during the product design stage and take both energy saving andresource conservation into account during product development and manufacturing.
6. Undertake environmental management activities throughout the entire TDK Group,
including all affiliated companies and overseas manufacturing units.
7. Contribute, as a corporate citizen, to the protection of the global environment.
8. Raise environmental awareness among all TDK employees by means of education andsupport employees’ participation in environmental activities.
Revised in March 1995
Established in March 19932

Corporate Set-up for Environmental Protection
Each and every one of us dedicated to the same goal

Corporate Activities Implemented Across the Board
TDK’s structure for driving its efforts to protect theearth’s environment is under the direct authority ofthe president. Starting with the Corporate
Environmental Protection Council, which deliberates
and sets the basic direction of the company’senvironment-related policies, it spans the entire
spectrum of the TDK Group—in all businessdivisions, corporate functions, and subsidiarycompanies. We accelerate environmental activities
under a company-wide project.

President

Director in chargeof safety andenvironment

Project leader

Lead-free project(Director in charge of safety
and environment)

Promotes lead-free solder
and lead-free products

Corporate Environmental
Protection Council

Zero emission strategy

Deliberates and sets thebasic direction on
environment-related policies

Promotes three Rs:
reduce, reuse, recycle

Promotion of
ISO 14001 status
Sets up and upgrades environment
management systems

Environmental
management

Safety andEnvironment Office

Reduces and controls the useof chemical substances

Promotion of
resource conservation

Business groups

Promotes recycling andmanages waste materials

Safety andenvironment function

Safety andenvironment function

Oversees environmental
protection activities atvarious corporate functions

Oversees environmental
protection activities
at business groups

Environmental
technology(Director in charge of safety
and environment)

Overseas plants

Saves energy at plants

Develops environmentallyfriendly products

Safety andenvironment function

PlantsPromotion ofenergy conservation

Promotion of
product assessment

Divisions

Departments

Develops anti-pollution
measures at plants

Promotion of chemical
substance management

Oversees all environmental
protection activities
in the TDK Group

Corporate functions

Promotion ofpollution control

Safety and hygiene
management

Safety management
Hygiene management

Subsidiaries

3

The Self-Promoting Environmental Target and
TDK’s Environmental Efforts
Setting specific targets for action

Progress and the Self-promoting
Environmental Target

Helping to Builda Resource-Recycling Society

In TDK’s view, an environmentally conscious
TDK adopted an Environmental Voluntary Plan incompany is one that earns a fair profit by providing
1993, in an effort to set specific targets for action. The
the world with useful products while using resources
progress in meeting these targets is shown below.
in the most efficient way possible and refraining fromthe use of hazardous substances.
Through the implementation of anenvironmental management
system based on ISO 14001, theMass production
international environmental
Mass consumption
Implementing green purchasing
standard, TDK exerts effective
Mass waste
Developing recyclable products
overall control over environmentRethinking
the manufacturing process
related activities involved in the
Global warming
Implementing energy conservation
management of its offices, its
Depletion of natural resources
Developing recycling technology
corporate profile, its manufacturing
Damage to the ozone layer
Recycling-based
distribution and services
processes and products, and the
Pollution of air, water, and land
procurement of materials. The
Fewer plants and animals
in the wild
combined effects of these efforts
will pave the way to meet our zero
Resources-consuming society
emission target by March 2004 andbe a part of the efforts to build a
Creating a society that recycles resources
resource-recycling community.
Environmental protection targets* and actual results under TDK Group initiative
Subject

TargetBuilding an environmental management system• Obtaining ISO 14001 certification at overseas plants by March 2000.
• Obtaining ISO 14001 certification at head office and service subsidiaries by March 2001.

(Promoting the creation of an environmental management system
in line with ISO 14001 standards)

Developing environmentally friendly products• Implementing product assessment at overseas locations by March 2000.
• Introducing a designation system for environmentally friendly products by March 2000.

Preventing global warming• Reducing by 25% from 1990 levels the ratio of energy consumption per unit of sale(calculated in terms of crude oil) by March 2011.
• Reducing PFC emission by 60% from 1995 levels by March 2011.

Promoting zero emission• Eliminating waste from all production facilities by March 2006.
• Eliminating the use of methylene chloride by March 2001.

Reducing the use of environmentally harmful substances• Reducing the volume of chemical substance emission by 20% from fiscal 1997 levels by March 2006.
• Completing the switch to lead-free soldering by March 2001.
• Reducing the amount of lead in TDK products.

* Self-promoting targets were revised in October 1999.

4

Sustainable Development
Contribution to resource-recycling society

Attainment of Zero Emissions
PolicyEnvironmentally Advanced Company

Publication of
information

Promotion of certification

Promoting zero emissions
and other goals

Making environmentallyfriendly products

Green purchasing

EMS ISO14001

Voluntary plans

Product assessment, LCA

Green purchasing system

Plant management

Corporate policy

Manufacturing, products

Procurement of materials

Operation of EMS (ISO14001) System

Fair profit

Contributing to society

Environmental consciousness

Actual results for fiscal 1999

Future efforts• 12 of 19 overseas plants have obtained certification.
• The head office and subsidiary service firms are currently
engaged in activities aimed at obtaining certification.

• Certification of the remaining 7 plants by March 2001.

16• Promotion of efforts to obtain certification by
the head office and subsidiary service firms.

16• Implementation has begun.
• The introduction of new procedures has been completed.

• Improvement of product assessment system throughin-house audits and promotion of an understanding ofquantitative environmental impact through LCA.

6 9
18

• 2.2% worse in comparison to fiscal 1990.

• Introduction of new energy resources and co-generation systems. 12• Achieved 73.0% reduction in comparison
to fiscal 1995.

• Promotion of greater efficiency in production processes
and energy conservation in air-conditioning systems.

13• Achieved 59% recycling of resources.

• Promotion of the three Rs: reduce, reuse, recycle.
• Actions intended to achieve initial quantitative goals
two years in advance.

10• Establishment of detergent-free technology, investigation
into and conversion to detergent substitutes.

15• 4 more offices abolish the use of methylene chloride.
(20 methylene-chloride-free plants out of 37 in total)(The amount handled increased due to increased production.)• 6.1% decrease in comparison to fiscal 1997.
• Completely lead-free soldering achieved for some products.
• Completely lead-free materials utilized for some products.
:Self-promoting target achieved

Related pages• Reduction in combination with the abolition of methylene chloride. 15• Promotion of the development of products incorporating
7
lead-free soldering.
7• Promotion of the development of lead-free materials.

:Progress toward self-promoting target:Negative movement away from self-promoting target:Self-promoting target not yet achieved

5Developing Environmentally Friendly Products
We are developing products that reduce our environmental impact

Creating Products fora Resource-Recycling Society
To create products compatible with a resourcerecycling society, we have made environmental
impact considerations an integral part of the entire
product cycle, from the selection of raw materials to
product disposal. An assessment in the design phaseensures that products with minimal environmental
burden are produced. Chemicals in the raw materials
and components used in our products are assessed
through green purchasing so that environmental
impact is part of the selection criteria. And in-plant
recycling, an Environmental Management System
based on ISO 14001, and other activities minimize
environmental burden in the production process.
A special logo we created in December 1999
indicates products produced under theseenvironmental impact controls.

Product Assessment
In 1998, we introduced the TDK Product Assessment
System in order to increase the efficiency of low
environmental impact products and to promote the useof uniform standards throughout the company. The
assessment process starts during the design of new
products and continues during each subsequent stage
to minimize the environmental burden of our products.
We began using the system for domestic
development activities in 1999, leading not only to
product improvements but also to numerous new
products with decreased environmental impact. A
program of incentive awards helps to promote thedevelopment of new products that are environmentallyfriendly. In addition, life-cycle assessments (LCA) wereconducted for a number of products to determine theirquantitative impact on the environment, and companywide introduction of such assessments is underconsideration.
Many environmentally friendly products developed
under the product assessment system were displayed at
the TDK TechnoForum 2000, which was held at TDK’s
Technical Center in Ichikawa city, Chiba in May 2000 toshow TDK’s latest accomplishments, attended by 3,300
visitors.

Commendation for environmentally friendly products

TDK TechnoForum 2000
held from May 24 to 26
at Yawata Technical Center

Exhibition of environmentally friendly products

6

Lead is an essential material used in electronic components to achieve specificproperties. At the same time, however, it can also be a hazardous substance.
Since our company began 65 years ago, we have worked to create a production
process that was lead-free, despite the difficulties involved. For example,
through our original technology we have developed lead-free multilayer
ceramic capacitors and the world’s first lead-free ceramic resonators.
But making products lead-free involves more than simply finding
a replacement for lead. It also requires the use of lead-free solder. Since themelting point of lead-free solder is about 50˚C higher than conventional solder,
it is also necessary to make the products more heat tolerant. Under acompany-wide project we are accelerating our efforts to develop lead-freematerials and use lead-free solder.

Lead-free multilayer
ceramic capacitors

Lead-freeceramic resonators

DC-DC converter for hybrid
vehicle use
This converter boasts reduced power
consumption achieved through greater
conversion efficiency and lighter weight
made possible through the use of analuminum case, thus enabling it tocontribute to greater fuel efficiency inhybrid vehicles.

Decreased use ofhazardous substances

Energy conservation

Responses to theelimination of lead

Environmentally
Friendly Products
Reusable casefor providing components

Reduction ofwaste materials

Resource
conservation

Magnetic heads for HDDs

Formerly supplied with tape wound

By reviewing the structure of HDD magnetic heads andreplacing the double-layer coil with a single-layer coil,
reductions in materials and energy during the manufacturing
process were achieved. In addition, resources are saved by
reducing the number of magnetic disks used in HDDs throughhigher recording densities.

Bulk feeder
Usually, electronic components aresupplied to mounters one at a time by a tapewound on a reel, and the tape is processed aswaste material. The bulk feeder supplied components
without the use of tape, contributing to reductions in waste material.
Single-layer magnetic head (cross-sectional view)

7

Green Purchasing
A shift to the procurement of environmentally friendly products

Green Purchasing of Goods for the
Production Process
We investigate the environmental policies of our
suppliers as well as the environmental soundness ofmaterials we plan to purchase using our Green
Purchasing Standards. Our investigations on
corporate operations are used to identify problems
affecting both the suppliers and TDK, and provide areference for future improvements. The results of thesurveys on products are entered into a database andmade available to the entire company in order tosupport the development of goods that have aminimal environmental impact.
TDK has released an English-language versionof its Green Purchasing Standards in view of the
globalization ofmaterials procurement.

Green Purchasing Process
Process for investigating corporate operations
The head office’s materials division takes charge of conducting investigations
Elimination of redundant investigations
Implementation of an evaluation system used company-wide
Completed forms

Supplier

Evaluation and data storage

Head office’s
materials section
The targets of theinvestigation are
decided upon on thebasis of the annual
value of transactions.

Corporate operations
database

Investigation

ABC Electric, Inc.
ABC Chemical
Industry, Inc.
ABC Machinery, Inc.
XYZ Electric, Inc.

Information on the suppliers is
obtained from the materials sections
within individual division.

Materials section
at A division

Materials section
at B division

Evaluation ofenvironmental
efforts: A

Information can be retrievedby anyone in the company using
an in-house computer network.

Materials section
at C division

Application

Overall evaluation of supplier based on
quality (Q), costs (C), and deliveries (D).

Process for purchasing materials
English version of Green Purchasing Standerds

Green Purchasing of Office Supplies
The purchasing sections at TDK collect catalogs ofenvironmentally friendly products and give priority to such
goods when buying office supplies.

Implemented by individual division
Reduction of investigation timeDistribution of business duties
The results of all investigations undertaken by the company are entered into the database.
Elimination of redundant surveys
Expansion of range of product options
Completed forms
Data storage

Supplier

Materials section
at A division

Product database

Percentage of Office Supplies Purchased
under Green Purchasing at Yawata Technical Center*
Glue

Investigation

(%)
40

Cases
Film

Request for an investigation

Connectors

30

Application

20

Technology andproduction section
at A division

100

Apr.–June
1999

July–Sept.
1999

Oct.–Dec.
1999

Jan.–Mar.
2000* Percentage of the total value of office supplies purchased procured through green purchasing.

8

Company name: ABC Co.
Product name: CN-X
Results of investigation

Information can be retrievedby anyone in the company using
an in-house computer network.
Data storage/
Application
B division

C division

The Self-declared Environmental Mark
Setting high independent standards

TDK’s Own Environmental Mark

Fourteen Areas of Environmental Concern

TDK has created its own environmental mark to makethe public aware of the concept of environmentallyfriendly products and to help promote environmental
consciousness by setting environmental goals during
the development of new products.

In use since December 1999, the mark identifies theenvironmental considerations that were taken into
account when a product was developed. The 14
specific areas that are included are based on ISO
14021 as well as on original ideas from TDK.

Fourteen areas of environmental concern
1. Recycled content

14. Clean (reducation or elimination of substance)

2. Recycled resource use

13. Compostable

3. Recovery energy

12. Disgradable

4. Waste reduction

11. Designed dissassembly

5. Recycled energy
consumption

10. Recyclable

6. Recycled water consumption

7. Extended life product9. Refillable

8. Reusable

Standards for the Self-declared
Environmental Mark

Common standards for the TDK self-declaredenvironmental mark (selected from overall 20 items)

Mark standards are derived from regulations
applicable to all products and detailed regulations
applicable to specific products, taking the ISO 14021
standards into consideration. TDK is now developing
the internal structure under which LCA can be easily
realized for all the products.

1. Implementation of product assessments
2. Implementation of life-cycle assessments, to theextent that the necessary data is available
3. Non-use of hazardous chemical substances
identified by TDK
4. Utilization of green purchasing practices
5. Acquisition of ISO 14001 certification for
production facilities

9

Zero Emission Strategy
Seeking the greatest possible reduction of environmental impact

Efforts in 1999 to Reduce Waste Emissions and Recycle Resources
TDK’s goal is to reduce the volume of waste handled
by outside waste disposal operators by 60% fromfiscal 1994 levels by March 2001 and to increase therecycling rate by 50%. To achieve the goal, each TDK
plant has set up a work group that manages thevolume of each type of waste-generated process andthe cost of disposal. Each plant also administers amanifest as stipulated by the revised Waste Handling
Law and promotes the recycling and reuse ofresources and the reduction of waste in accordancewith the three Rs: reduce, reuse, recycle.
Information on the waste material generated byeach plant is combined and analyzed in both broadand specific categories. The data we accumulate will
enable us to develop ever more finely detailed
systems in the future.

Examples of recycling efforts
Type of waste material

More specific categories

Recycled materials

Ash

Ash

Cement materials

SludgeSludgeIron manufacturing materials, cement materials

Waste oil

Machine oil

Reclaimed oil

Waste solvents

Reclaimed solvent, detergent

Waste alkalis

Waste alkalis

PH-adjusted liquid

Waste plastic

Styrofoam

Styrofoam

Magnetic tape

Rope, netting, concrete panels

Film

Fuel, carpeting

Molded Plastic

Cement materials, fuelCardboard

Cardboard

Scrap copy paper

Toilet paper

Scrap paper

Newspapers and magazines Reclaimed paper
Scrap wood

Pallets

Solid fuel, boards

Changes in total waste volume and ratio of resource recycling

Kitchen garbage

Organic waste

Fertilizer, waste decomposing microorganisms(Total of TDK parent and domestic subsidiaries’ product and development bases)

Scrap metal

Waste metal

Reclaimed metal

Cans

Iron and aluminum materials

Leads and wires

Metal fittings, copper wire

(Thousand ton)

Waste volume

Ratio of resource recycling (%)

100

70
60

Waste glass and ceramic Glass bottles

40
50
30

Glass

Waste ceramic

Reclaimed ceramic materials

Dust

Ground-up waste

Iron manufacturing materials, steel

Other

Dry-cell batteries

Ferrite materials, reclaimed materials

50

Fluorescent lights and mercury lights Recovered mercury
20
10
0

1994

1995

1996

1997

1998

0
1999 (fiscal)

Volume of waste generated and an overview
of the processing sequence
Total waste volume (A)Volume of resources recycled (C)53,000 t

25,000 t
sludge, waste oil, waste plastic

Volume of substances
processed for disposal (B)Volume of waste handled
by waste disposal companies (D)11,000 t

17,000 t

sludge, waste oil, waste plastic,
scrap paper

sludge, waste oil, waste acids,
waste plastic(A) = (B) + (C) + (D)Reducing Waste Handled by Waste
Disposal Firms and Recycling
In order to promote conservation of resources, TDK
established goals concerning reduction of the volume ofwaste processed by outside businesses and the recyclingof resources and is striving to achieve those goals.
Volume of waste handled
by waste disposal firms and recycling targets
Fiscal 2000

Fiscal 2003

Compared to fiscal 1994

60% reduction

100% reduction

Domestic subsidiaries Compared to fiscal 1997

30% reduction

100% reduction

2. Recycling waste

Fiscal 2000

Fiscal 2003

Compared to fiscal 1994

50% increase

100% increase

Domestic subsidiaries Compared to fiscal 1997

25% increase

100% increase

1. Reducing waste
Parent company

Parent company

TDK has set individual targets for its own plants and offices and those of its
subsidiaries (satellite companies) in Japan to reduce the volume of waste
handled by waste disposal firms and promote recycling. We are also working
hard to get each of our affiliates to revise their manufacturing processes andto separate waste materials thoroughly.

10Promoting Zero Emissions
We have initiated a zero emissions strategy, as a basic
principles of the new medium-term business project
named Exciting 108. The scheduled date for theachievement of our ultimate goal has been moved up two
years from the original estimate, to March 2004. All of ourdomestic plants and those of our subsidiaries are involvedin the effort to achieve our goal. We are organizing a Zero
Emission Project to implement this effort and formulating abasic plan to promote the project at each location involved.
We are improving our manufacturing processes andrecycling at every step—efforts that include the acquisitionof better waste processing technology and the recycling of
all four major categories of waste generated at TDK—
sludge, waste oil, waste acid, and waste plastics. We are
striving to develop the means to eliminate waste emissions
to the greatest possible extent. And we are working to
reduce the volume of unavoidably generated waste and topromote recycling outside the company while holding to
the basic goal of ultimately achieving a 100% recycling rateand zero emission of waste.
Definition of Zero Emission
TDK’s zero emissions: Eco-factory-type zero emissions
The final target is 100% recycling through reduction,
reuse, and recycling of waste matter produced by plants.
Target substances: 17 types of substances enumerated
in Waste Disposal and Public
Cleansing Law
Target venues:

Sites having or expected to have ISO
certification including all 27
subsidiaries

Target date:

March 31, 2004

Organizational chart for promoting the company-widezero emission project

Methods of promoting zero emissions
Facilities
andplantsIncluding the 27
subsidiaries

Reduce(emissions)Reuse

No waste
Recycle100% recycling

Reduce volume of waste matter

Use resources efficiently

Concrete measures to promote
reduction and reuseTie-ups with the recycling
business field and progress
toward independent businessactivities concerned with recycling

Compliance with the Law for Recycling ofContainers and Packaging
Japan’s new Law for Promotion of Sorted Collection
and Recycling of Containers went into effect on an
expanded basis in April 2000, and for TDK, its
primary effect is on recording-media products. We
have devised a company-wide system to enable us tounderstand, plan for, and prepare containers andpackaging materials having the appropriate weight
and other characteristics to comply with the new law.
We will continue to improve this system in the
future so that we will be able to manage containers
and packaging each year in a strict mannerconsistent with the stipulations in the law.
Furthermore, we are also working to reduce theamounts of various container and packaging material
we use, and promote recycling.

President
Project leader (Director in charge of safety and environment)
Secretariat Safety &Environment OfficeSpecialty sections

Regional generalaffairs sections

Business groups
Each plant and satellite
Overseas plants

Corporate functions

Subsidiaries

Dioxin Strategy
TDK and its domestic subsidiaries operated a total ofseven small-scale incinerators that fall within thepermissible scope of the Waste Disposal and Public
Cleansing Law in 1998, but in 1999 five of them wereshut down, and the remaining two are scheduled to
shut down by March 2001. Finally we will be able toreduce dioxin emissions to zero.

11

Preventing Global Warming
Steady efforts to help the effort to prevent global warming

Promotion of Energy Conservation
TDK has positioned the control of CO2 emissions
through energy conservation at the core of its efforts
to prevent global warming and promotes energy
conservation activities mainly at its major facilities inJapan. A key element of this is increasing theefficiency of production facilities throughimprovements in manufacturing equipment.
TDK is working toward the goal of achieving a 25%
reduction in basic energy units by March of 2011
relative to its total for fiscal 1990. Our basic energy
unit totals increased from fiscal 1991 through 1993,
but have been decreasing ever since fiscal 1994.

Changes in TDK’s basic energy unit (Total of TDK parent and domestic subsidiaries’ product and development bases)
Sales (1999 = 100)

Energy usage volume (1990 = 100)

Basic energy unit (1990 = 100)

130

125
115.7
110.6

125
100

109.9

109.0

108.3

101.1

101.0

102.2

99.7

100
115.3

115

112.8

110

75

105.0

105
100

108.9

108.2108.0

100 100

102.8
101.9

101.5
100.4

99.9

98.5

97.7

97.7

50

96.9

Basic energy unit (index)

Sales and energy usage volume (index)

120

95
89.1

90

25

84.4

85
80

89.0

1990

1991

1992

1993

1994

1995

1996

1997

1998

1999

(fiscal)0

Personnel Training to Promote Energy
Conservation

Introduction of New Energy and Co-generation
Systems under Consideration

The revised Energy Conservation Law came into
effect on April 1, 1999, requiring more thoroughenergy conservation measures in manufacturing.
We determined the types of energy conservation
measures that would apply to each of our facilities
and provided training so that they could be carriedout. Meetings were held about the energy-efficient
operation of furnaces and air conditioners, forexample, as well as on issues directly related to
manufacturing processes. Our employees also toured
other companies to learn new energy conservation
measures and energy management techniques.

Many of our facilities are located near the coast,
which makes them suitable for wind power
generation. We plan to conduct surveys of windconditions at the most appropriate facilities andconsider the introduction of clean energy systems
that use wind power generation. In addition, we havebegun to examine the introduction of a natural gas
co-generation system at the Chikumagawa 2nd
Technical Center with the aim of reducing CO2
emissions. Preparations are underway for the start ofoperations in May 2001.

12

Examples of Energy Conservation at Plants

Reductions in Greenhouse Effect Gases(1) Improvements in production and manufacturing processes

The Global Warming Prevention Law, which went
into effect in April 1999, designated PFC(perfluorocarbon, a type of fluorine solvent), as agreenhouse gas. Because we used PFC in some ofour cleaning processes, we undertook a study to
reduce PFC volumes in accordance with the law.
Instead, the study results led to a change in the
structure in some materials, which in turn made awater-wash possible. While our goal had been to
reduce PFC emissions by 60% compared to fiscal
1995 levels by March 2011, reductions of 73.0% had
already been reached by fiscal 1999. We are alsoplanning to examine the use of substitute materials
for the PFCs that are used in product evaluation
processes.

Development of procedures and improvements in manufacturing
processes are promoted through determinations of the Basic Energy
Unit and confirmations of product quality.
Energy Conservation Measure Plant

EffectIntroduction of servo press
molding equipment that
does not use hydraulic power

Narita Plant

534 MWh/year

Acceleration ofheating furnace shipment

Inakura Plant

224 MWh/year(2) Use of waste heat
Sharing expertise on the use of air conditioning using outside air (cold water
manufacturing by using a cooling tower during winter) in the entire company.
Energy Conservation Measure Plant

EffectCooling using outside air

Chikumagawa
2nd Technical Center

Cooling using outside air
by 3 air conditioners

Chikumagawa Plant 121 MWh/year

763 MWh/year

PFC emissions (Unit: tons)
Total of TDK parent and domestic subsidiaries’ product anddevelopment bases
1995

2.15*

(3) Installation of high-efficiency equipment
Energy control standards were established, and facilities are always
run at high efficiency. When energy efficiency unavoidably decreases
because of aging facilities, they are replaced with higher-efficiency
new facilities.
Energy Conservation Measure Plant

EffectInstallation ofscrew-type compressors

396 MWh/year

Chikumagawa

Installation of high-efficiency
absorption refrigerating machine Chikumagawa

1996

1997

1998

1999

2.15

1.32

0.58

Note: * With respect to PCF emissions, 1995 was designated as the base year
under the 1997 Kyoto Protocol. TDK, which conducted its first surveys in
1997, was unable to determine its values for 1995. Under the terms of a
Voluntary Action Plan Concerning Measures to Limit the Emissions of HFCs
and Other Gases in the Electronic Industries worked out by the Electronic
Industries Association of Japan, totals for fiscal 1997 are interpreted as
equivalent to those for fiscal 1995, and TDK follows this policy as well.

332 Kl/year(fuel oil conversion)(4) Improvements in control methods
By actively replacing fluid devices with inverter devices, more fluid
volumes have been achieved.
Energy Conservation Measure Plant

EffectInstallation of inverter
drier blowers

Inakura Plant

187 MWh/year

Installation of inverter supply
and exhaust systems

Akita Plant

140 MWh/year13Management of Chemicals
Creating strict standards for use and a strong system of control

Reflected in Green Purchasing Practices and Product Assessments
In 1996, TDK established a set of standards governing
the use of chemical substances. These standards, whichtake into consideration the relevant legal restrictions aswell as the hazardous nature of the substance, divide
chemicals into the categories shown in the figure below.
When new legislation governing the use of chemical
substances is enacted or existing legislation is revised,
we revise our own standards to make them conform.

When new potential hazards and concerns about
natural resources were revealed in 1998, a moredetailed classification scheme was applied to
substances already classified as “prohibited” as well as
to those classified as “restricted.” This is reflected inour green purchasing practices and our productassessment procedures, which emphasize theprocurement of environmentally friendly materials.

Developing Substitute Materials and Promoting Their Use
Occasionally, in the interests of research anddevelopment or the need to analyze or ensure productquality, the use of a prohibited substance is unavoidable
there is no suitable substitute available. In those cases,
a strict review is conducted by the TDK Safety &Environment Office. Approval is given only when thereview criteria are satisfied and must be renewed on anannual basis. This provides increasingly better
management with each passing year.
This type of review also serves to promote thedevelopment and introduction of alternative technology
and substitute materials. In 1999, for instance, ourproduction division stopped using mercury to obtainaccurate measurements of density in product quality
analysis procedures and switched to a system that uses
silicon oil, instead. Thus use of a highly toxic chemical
substance was completely discontinued. This not only
eased the burden of managing use of the material on adaily basis, but also reduced the amount of harmfulwaste materials generated, reaffirming the value of thereview process to the company.
In the future we will work to achieve even greater
control over the use of such substances, based on theprinciple of refraining entirely from the use ofhazardous chemical substances, no matter how small
the amount.

Outline chart of supervision system for chemical substancesClassification of chemical substancesSupervision Standards
for Chemical Substances

Prohibited substances:
Chemicals whose use is, in principle, prohibited
due to legal restrictions or their hazardous nature.

Subcategories

Restricted substances:
Chemicals for which it is necessary to reduce the volume
used and the volume released into the environment,
restricted due to legal restrictions or their hazardous nature.

Subcategories

Classification of chemical substances
Prohibited Substances: Substances that are not to be used in either
processes or products (130 substances)
Restricted Substances: Encouraging reduction in usage volume or shift toless harmful substances (553 substances)
Controlled Substances: Substances that do not fall into the above
categories(as of April 2000)

Controlled substances:
Chemicals not included in either of the above two categories.

Review sequence for obtaining permission
to use a prohibited chemical substanceConfirmation of type of chemical
substance to be used
Use of reference system forchemical substances

Application filed

Receipt of application and review by
TDK Safety & Environment Office

Application received
Operation Waste Disposal
Supervision
Supervision
Pinpointing suitable
GraspingthePinpointing
suitable
Pinpointing
suitablewaste disposal
Grasping
usage methods
methods
purchase volume substance contents storage methodsof products
Observance of law Observance of law Observance of law
Supervised
Purchasing

Product
Supervision

Storage
Supervision

NG
Review of documents
NG
OK

Product assessment

Application
rejected

Purpose of use, alternative plansOKOn-site review

Green purchasing

Green purchasing
review item
Product
assessment item

Implementing inspection of chemical substances

Application
rejected(Can be resubmitted after
improvements are made)Possible problems related to safety andhealth or environmental considerations
Confirmation of legality and circumstances
governing management of chemical
substance

Approval
Annual renewal (repeated reviews)

14Pollutant Release and Transfer Registers (PRTR)
Targeting for complete elimination of methylene chloride

Making Doubly Sure of Compliance with PRTR
Since 1998, TDK has voluntarily participated in a survey on
Pollutant Release and Transfer Registers (PRTR) conductedunder the auspices of the Federation of Economic
Organizations. We have held company-wide explanatory
sessions and taken other steps to make doubly sure wewill be in compliance with Japan’s Pollutant Release andTransfer Registers Law, which was enacted in July 1997
and is scheduled to take effect in April 2001. Figures on therespective amounts of air, water, and soil emissions
containing substances addressed by the PRTR Law, alongwith the quantities of constituent waste substances, areshown in the table below.

We are committed to the goal of reducing the overall
volume of our emissions of chemical substances by 20%,
relative to 1997 levels, by March 2006. The figures forfiscal 1999 show a 6.1% reduction, as well as a 34.6%
reduction in the use of methylene chloride, a substanceused to clean electronic components. Our goal is tocompletely eliminate methylene chloride emissions by
March 2001, and to this end we are proceeding with efforts
to come up with techniques that are not dependent on
detergents and are exploring the possibilities for using
alternatives.

Amounts of chemical substances covered by the PRTR law handled in TDK
Fiscal 1997

Fiscal 1998

Fiscal 1999

28

28

28

Number of locations

Quantity of
Quantity of
Quantity ofAmount handled Amount discharged waste constituent Recycled Amount handled Amount discharged waste constituent Recycled Amount handled Amount discharged waste constituent Recycled(tons)(tons)(tons)(tons)(tons)(tons)(tons)(tons)

2351.5

603.7

371.6

1376.2

1929.3

526.4

298.0

1104.91393.2

434.4

177.7

700.1

barium compounds

8.2

0.0

0.3

0.0

8.5

0.0

0.1

0.0

21.3

0.0

0.4

0.2

methylene chloride
nickel compounds

838.2

674.5

111.1

52.6

693.3

0.0

37.1

0.0

1004.0

758.1

112.0

133.6

1027.8

831.5

104.7

91.6

455.0

0.1

38.4

1.6

674.4

0.0

59.3

6.9

copper compounds

60.4

0.0

6.5

0.0

37.5

0.0

5.6

0.0

58.7

0.0

6.0

0.0

lead compounds

281.9

0.1

17.1

51.6

254.0

0.0

14.7

85.0

231.5

0.0

39.2

24.2

trichloroethylene

80.0

60.0

20.0

0.0

40.8

30.5

10.3

0.0

0.0

0.0

0.0

0.0

xylene

70.0

24.0

34.0

0.0

45.0

20.8

10.0

0.0

64.9

21.5

15.9

8.4

cobalt compounds

61.8

0.0

4.1

0.0

90.7

0.0

6.5

0.8

243.9

0.0

8.6

202.1

silver compounds

28.6

0.0

0.6

0.0

3.6

0.0

0.0

0.1

15.1

0.0

0.0

3.8

chromium

53.3

0.0

0.0

9.8

31.7

0.0

8.1

0.0

30.3

0.0

9.0

0.0

tetrachloroethylene

13.0

10.0

3.0

0.0

42.5

32.5

10.0

0.0

0.0

0.0

0.0

0.0

55.0

0.0

4.0

0.0

5003.6

0.0

27.1

145.3

toluene(tons)(tons)

diglycidyter of bisphenol A(tons)(tons)

4282.5

0.0

0.5

0.0

4492.4

0.0

2.2

1.1

vanadium compounds

4.7

0.0

0.0

0.1

4.5

0.0

0.0

0.0

4.7

0.0

0.0

0.1

boron compounds

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

23.0

0.0

0.1

2.6

dimethylformamide

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

1.5

0.8

0.7

0.0

Total

8827.31372.3605.91490.38439.51368.4515.91327.18848.81288.1452.8

1185.3Compared to fiscal 1997

100%

100%

100%

100%

95.6%

99.7%

85.1%

89.0%

100.2%

93.9%

74.7%

79.5%

manganese compounds

Notes:• Surveys were conducted at the production and R&D bases of TDK and its domestic subsidiaries. The scope of chemical substances subject to the surveys was inaccordance with the PRTR Law.
• Volumes handled and emissions volumes were calculated by making reference to the PRTR Guidelines for Electrical and Electronic Industries, with calculations
carried out from activities under the Environmental Management System.
*1: TDK began totaling figures for diglycidyter of bisphenol A in fiscal 1999.
*2: Total including air, water, and soil emissions.

15

Environmental Management System (EMS)
Conducting continuous reviews and raising levels company-wide.

Acquisition of ISO 14001 Certification
TDK awaited the adoption of standards foracquisition of ISO 14001 standards in June 1996 andmade a decision that all of its production and R&D
bases would acquire certification. Starting with theacquisition of certification by the Mikumagawa Plant
in April 1997, all domestic production and R&D bases
acquired certification by April 2000. TDK set a goal of
having 19 overseas production bases obtaincertification by March 2000, but only 12 were able to
do so. The remaining seven plants will continue theirefforts to acquire certification, and plans are for all tocomplete certification by March 2001.
Since environmental management is an
important issue for company management, we
determined that acquisition of certification by
Headquarters and service subsidiaries was essential.
TDK is currently working to complete certification by
March 2001.

Reinforcing the Environmental Management
System and Raising Effectiveness
Under a voluntary plan, TDK has set objectives andtargets for each plant and is working to improve
environmental management system and enhanceenvironmental performance. We are improving
operational management, investigating measures forthe prevention and amelioration of emergency
situations, and conducting regular testing andtraining, Since management of risks is essential toreceive ISO 14001 certification. We are also callingfor increased participation among employees,
training in-house environmental auditors, and hascompleted training for more than 1,500 employees
company-wide. TDK has also implemented follow-up
training of auditors to raise the level of in-house
audits.
Since internal implementation of such training isdesirable, TDK is developing training curricula andtraining instructors in order to improve in-house
audit structures in the future.
Moreover, TDK is encouraging improvement on
a company-wide level through the environmental
audits by the headquarters.

Korea TDK receives ISO 14001 certification in June 1999.

SAE Magnetics (H.K.) receives certification in December 1999.

Waste fluid recovery training(Kofu Plant).

Waste water recovery nighttime training

In-house auditor training

16

Preserving the Earth’s Environment
at Production Sites
Each facility is dedicated toward creating a better environment

Care for the Environment When
Constructing Buildings
When TDK constructs a new plant or other facility, it asks
builders to take the environment into consideration in bothdesign and construction phases. For example, while the E2
wing of TDK Technical Center and the D3 wing of the Narita
Plant (both completed in 1999) were being constructed,
these efforts by both TDK and the builders reduced theenvironmental burden on nearby residents:
1. Ensuring that leftover materials were disposed ofproperly
2. Ascertaining the chemical content of construction
materials
3. Managing water quality and the use of paints
4. Reducing noise
The design of these facilities also called for the use ofnatural lighting to save energy and for a heating and air
conditioning system that makes use of water heated andcooled at night when energy costs are lower and thenstored for use during the day.
We have created a newstorehouse for waste
matter at Technical Centerin order to better manage
the separation of wastematerials.

Monitoring Water Quality
In fiscal 1999 it was discovered that discharges fromrainwater drains at the one of our plants had leadconcentrations in excess of regulatory levels. An
investigation revealed that the equipment thatcollected particulate matter in exhaust emissions wasleaking. The particulates, containing lead, werecollecting on the roof and became part of therainwater runoff discharged from the drains.
Measures to prevent the problem were undertaken,
and plants and equipment were upgraded andoperating procedures improved at other sites as well.
Since the improvements were made, tests on
rainwater have not detected any lead and there havebeen no subsequent problems.

Soil Clean-up
We are in the process of cleaning up the soil around
one of our plants where residual concentrations oforganochlorine solvents in excess of environmental
standards still exist. Thusfar, clean-up efforts havelowered the concentration,
but not to a level below
the acceptable maximum.
We are now taking
additional clean-up
measures. We also
continue to do periodic
testing and monitoring of
the ground water at ourother business sites, so no
problems arise.
Testing and monitoring of ground water

Thermal storage air conditioning system at the D3 wing of the Narita Plant

Kitchen-Garbage Decomposer
At its Chikumagawa Plant, TDK has installed anadvanced kitchen-garbage decomposer that uses
microorganisms to break down waste matter more
completely than ordinary composters. The device
decomposes the garbage almost completely into
water and air, leaving no residue.

Kitchen-garbage decomposer at the Chikumagawa Plant

17

Environmental Activities Overseas
Ambitious efforts throughout the world

Worldwide Activities
TDK is attempting to gain ISO 14001 certification for
its overseas plants and is engaged in a variety ofother environmental protection activities at thesesites. We hope to raise the environmental awarenessof all our employees as we carry out these activities.

Responding to Globalization
Separate collection of waste materials at SAE Magnetics (H.K.)

The proportion of TDK’s production that is carried out
overseas is increasing from year to year, reaching
57% in 1998. Consequently, in 1999 our Safety &Environment Office presented our environmental
policy to facilities in the United States, Europe, andAsia and set up channels for transmitting
environmental information among TDK facilities. As
a result, all overseas production sites had begun
product assessment by March 2000, on schedule.
The same process will be undertaken at all overseas
production sites established in the future. Our
overseas facilities are currently getting ready to startcollecting environmental data to determine theenvironmental burden resulting from company
activities worldwide.

Meeting at the plant in the U.S.A.

Activities in Korea
As one facet of its global environmental clean-up
campaign based on ISO 14001 targets, TDK Korea
undertakes clean-up activities in the Annyang river
twice a year.

TDK Plant in Luxembourg Wins
Environmental Protection Prize

Clean-up activities of Korea TDK Co., Ltd. in the Annyang river

In 1998 the Luxembourg Chamber of Commerce
presented TDK Recording Media Europe S.A. (TRE), with
its Environmental Protection Award for the company’s
wise energy usage. Since 1996 TRE has been using heatemitted from manufacturing processes to turn steam
turbines and generate electricity.

An in-house generating system at TRE helps reduce CO2 emissions.

18

Employee Education
Raising environmental awareness in each employee

Systematic Environmental Education

Environment Cards

Environmental education has traditionally involved
training staff responsible for environmental matters inhighly technical aspects of pollution prevention andenvironmental technology. Now, however, all staff
members, regardless of job title or position, need tolearn about environmental protection corresponding toeach position. Environmental education is currently
conducted at each of our plants as part of the activities
involved in gaining ISO 14001 certification. Still, we
have been concerned that this training process may not
be consistent company-wide. As a result, we havebegun putting together a systematic education systemthat will involve (1) providing new employees withenvironmental training; (2) introducing separate training
programs for the various levels of the company
hierarchy and for technicians, and coordinating thecontent of these programs; and (3) setting up thesystem so that each staff members can participate
effectively in environmental protection activities
according to his or her position.

TDK’s plants engage in a variety of methods to raise theenvironmental awareness of employees and unify themaround environmental concerns. One such method is
the use of pocket-sized Environment Cards, on which
employees write down the environmental protection
activities in which they engage during their day-to-day
work. This simple yet popular device used at many ofour plants seems to work well in making employees
more conscious of the goals of our environmental
protection activities.
Each plant’s own environmental news and posters
placed on walls around our workplaces also help raise
environmental awareness. Additionally, to ensure that
all our workplaces share the same environmental
information and that employees are unified aroundenvironmental concerns, the Safety & Environment
Office at company
headquarters
issues a regular
newsletter named
TDK ECOPLUS.

Pocket-sized Environment Cards

Environmental education program for the newly-employed

Environmental newsletters:
the Kofu Plant and Kofu TDK publishes a regular newsletter to remind
employees that the environment inside the plant is their environment.

TDK ECOPLUS

Environmental poster:
the AC and B sections of the Narita Plant
take turns in creating a poster
every other month. They also submit
their posters to Narita Plant’s Eco
Contest each year.

19Industrial Safety and HealthOngoing safety and health activities

TDK has long operated under the slogan “Safety andhealth for all human treasures.” We place a highvalue on the ideals of human dignity and the creationof a pleasant work environment. Accordingly, safety
and health activities are ongoing to improve the work
environment and eliminate workplace accidents.

for floor layout and manufacturing processes, which
it uses at some plants. The staff also conducts otheractivities to minimize unsafe workplace conditions.

94.6.28

1. Safety and Health Education
Safety and health education takes place both on andoff the job, through programs for new employees,
workplace assignment rotation, and specialized
training in fields like dangerous materials and highvoltage applications. In case a job accident happened
to an employee, he must go through the education
before returning to work.
2. Safety and Health Self-assessments
TDK workplaces are required to conduct safety andhealth self-assessments twice a year. These cover 16
categories and 252 items. Any nonconforming items
must be rectified immediately, to prevent workplace
accidents.
3. Company-wide Safety and Health Analysis
Each year, our Safety & Environment Office conducts acompany-wide workplace accident analysis for theprevious year and notifies each plant where changes
need to be made. The
plants must thendevelop and carry out
a plan for correcting
the problems. In
some instances the
Safety & Environment
Office conducts areevaluation of the
TDK safety and health analysis
site.
4. Safety Checks on New Equipment
The safety and health staff at our company
headquarters has prepared a basic safety checklist,
which is used when new equipment is delivered orwhen equipment is moved from one company
section to another. Each receiving office and plantuses the checklist to draw up a more specific checksheet to evaluate the equipment; if the item passes, aseal of approval is affixed. This approval system has
served to reduce potentially hazardous working
conditions dramatically. The safety and health staff
has also developed check-up and approval protocols

20

Equipment with a sealof safety approval

Various other activities are carried out to ensure
the safety and health of company employees. As
stipulated by the Industrial Safety and Health Law,each plant has a Safety and Health Committee, whichacts as an advisory body on all matters of safety andhealth management. The departments responsible
for safety and health at company headquarters
provide assistance as needed.
Changes in number of accidents at work places
Total number of accidents
Number of accidents that need injured employee for absence
30
27

20

19

20

19

18

15

15

15
13

10
7

6
3

3

4
2

1

4

3
1

1

0
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 (fiscal)

Note: Figures represent collective totals.

Community Activities
Do what you can around you

TDK has adopted “good corporate citizenship” as afundamental principle, since no company can growwithout the cooperation of local and international
communities. The following are examples of TDK’s
environmental protection activities carried out as partof its get-to-know-you and other community work.
Kofu Plant Opens Rose Garden to the Public
Many TDK facilities are graced with rose plants, andone site, the Kofu Plant, opens its rose garden to the
public when the flowers are in full bloom. The idea
behind a rose garden began 20 years ago, when
TDK’s president sent a rosebush to the facility, andthe staff responded by forming a Rose Committee toenhance the grounds with “the scent of roses.”
People come from all over Japan to see the garden
when it is open, and local residents much appreciate
the beautiful touch to their city. The Kofu Plant’s rosegarden has received numerous awards, and in 1997
won the Seventh Urban Beautification with Flowers
Contest (corporate division), sponsored by the
Ministry of Construction.
Pine Preservation ClubThe remains at Kujuku Island, in Akita Prefecture, arewell known for beautiful pine trees. The area is partof the village of Kisakata, mentioned prominently inseventeenth-century haiku poet Matsuo Basho’s Oku
no Hosomichi; the picturesque island was largely
destroyed in an earthquake in 1804. Unfortunately,
however, the pines have begun to die off in the past
several years, prompting the formation of a Kujuku
Pine Preservation Club in 1999. TDK employees areactive volunteers in the club’s efforts.
Environmental Management Activities for theCommunity at Large
Thanks to TDK’s emphasis on gaining ISO 14001
certification as quickly as possible, the company has
been asked by Akita Prefecture and the cities of Saku
and Hita to participate in government policymaking
on the environment. We have responded willingly tothese requests and also help our clients with the ISO
14001 certification process.

The rose garden at Kofu TDK is open to the public.

The Pine Preservation Club conducts a survey of dead pine trees.

TDK participated in the 20th Environment Symposium held in
Kosaka-cho, Akita Prefecture in November 1999.

Other Activities
Our employees are active volunteers in clean-up andbeautification projects in the neighborhoods aroundtheir workplaces and at nearby rivers and seashores.
Cleaning activities on the Shizunami Coast, Shizuoka Prefecture

21

Environmental Costs
For greater efficiency in environmental protection

Basic concepts for calculating costs in fiscal 1999
(1) Costs will be determined at the production and
R&D bases of TDK and its domestic subsidiaries.
(2) Calculations will be made based on Environmental
Agency guidelines.
(3) The amount of capital investment in plant andequipment shall be the amount paid in fiscal 1999.
(4) Depreciation for equipment is not included in costcalculation.

The Reason for Ascertaining
Environmental Costs
TDK is working to determine environmental costswith the objective of gaining an accurate
understanding of the expenses necessary for its
corporate activities taken in consideration ofenvironmental preservation, so that it can makemanagerial decisions to promote more effective
environmental preservation activities. As one of themeans to determine environmental costs, TDK newly
created a special accounting code for a part ofenvironmental costs in October 1999.

Future developments
In the future, TDK will consider the relationship between
environmental costs and the reduction in environmental
impact as well as profitability and will consider the
introduction of an environmental accounting system.

Calculating environmental costs (Fiscal 1999 / Unit: ¥ thousand)Parent company
Category

Item

Pollution control
measures

Atmospheric pollution control
Foul smell control
Water pollution control

Expenses

63,800114,332

Domestic subsidiaries
Total Capital investment

Expenses

Total

54,341

20,111

74,452

178,132

9,500

57,59867,098

260

7,801

8,061

121,978

277,222399,200

92,48539,697132,182

Soil pollution control

3,035

5,618

8,653

1,891

17,087

18,978Noise control

35,30014,541

49,841

29,205

9,308

38,513

0

197

197

0

3,545

3,545

Waste control

35,857

348,992

384,849

13,668264,467

278,135

Sub-total

269,470818,500

1,087,970

191,850

362,016

553,866

Recycling

3,573

117,777

121,3500231,643

231,643468,948

19,276488,224

3,296

5,421

8,717

Resource-saving

0

4,274

4,274

13,38010,08923,469Warming control

0

0

0

0

0

0

Protection of the ozone layer

0

0

0

18

439

457

Greening

20,64052,71773,357

1,401

16,125

17,526

Others

9,986

5,949

15,935

5,578

10,352

15,930Sub-total

503,147

199,993

703,140

23,673274,069

297,742

245,587245,587772,617

1,264,080

2,036,697

Vibration control

Environmental
measures

Capital investment

Energy-conservation

Personnel
Total

Indirect environmental protection costs (Unit: ¥ thousand)

159,318

159,318

795,4031,010,926

Profit from the sales of commercial-value products (Unit: ¥ thousand)Parent company

Domestic subsidiaries

ISO certification

10,034

16,675

SludgeEducation and training

5,857

4,284

Waste oil

Information and publication

1,816

5,537

Organic solvents

Other incidental outlays

10,6393,870

Personnel

230,238

6,638

Total

258,584

37,004

Item

215,523

Item

Parent company

Domestic subsidiaries

30,120

3,251

0

0

1,522

937

Waste plastic

1,127

14,313

Scrap metal

14,34458,518

Scrap paper

413

0

3,365

5,856

Waste acids and alkalis

147

0

Other

52

0

Total

51,09082,875Class and ceramics

Note: Cost reduction effects resulting from recycling of waste are not included.

22

Chronology of
TDK’s Environmental Protection Efforts
Constant progress in protecting the environment

1970

Waste water treatment technology developed at Corporate Research andDevelopment Center.
Coherence treatment using ferrite electrodes.

1975

Environmental protection group set up.
Company-wide administration on environmental protection launched.

1976

Environmental protection structure set up, consisting of production technology division,
environmental safety section (head office), and business group organization.

1978

Administrative regulations formulated for safety and environmental protection.
(In 1987, separate administrative regulations were formulated for environmental protection.)

1980

Environment diagnosis launched at head office. (In 1986, the program was changed toannual self-diagnosis on environmental protection with head office observers.)

1987

Energy-saving strategy office set up.

1990

Environmental Protection Manual published.
Safety and Hygiene Manual published.
Energy-saving Manual published.

1992

Office for environmental protection measures set up to cope with global environmental problems.

1993

TDK Environmental Voluntary Plan drawn up.
(The plan was revised in 1995 and overseas distribution added.)

1995

Safety & Environment Office set up.
Application for ISO 14001 certification authorized.

1996

Unified management of chemical substances launched.

1997

ISO 14001 certification obtained by Mikumagawa Plant, first in TDK Group.

1998

ISO 14001 certification obtained by all TDK parent facilities.
Complete elimination of trichloroethylene and tetrachloroethylene.

1999

Product assessment launched in domestic facilities.
Green purchasing launched in domestic facilities.
Inauguration of lead-free project.
TDK Environmental Report 1999 published.

2000 March
April

Zero Emissions Project launched.
Acquisition of ISO 14001 certification by all production and R&D bases in the domestic
TDK Group completed.

23

Corporate Data

Registered name

TDK Corporation

Corporate headquarters

1-13-1 Nihonbashi, Chuo-ku, Tokyo 103-8272, Japan

Date of establishment

December 7, 1935

Paid-in capital¥32,641,976,312

Number of employees

34,321 (consolidated)

Sales¥674,400 million (consolidated)

Net profit¥50.7 billion (consolidated)(All figures are for the fiscal year ended March 31, 2000.)Sales

Net earnings(¥ billion)

Consolidated

Parent company(¥ billion)

Consolidated

Parent company

60.3
696.7

700

58.4

60

676.3

674.4
50.7

620.7
50

600
500
400

46.0

541.4
485.1

351.3

40

375.6

397.7

434.8

425.7
389.3

27.7

30

28.1
24.4

300

13.0

200
10

100
0

21.6

20.0

20

16.4

11.1

0
1995

1996

1997

1998

1999

1996

1997

1998

1999

Consolidated

Parent company

Consolidated

Parent company

432.4
442.9 442.5
400

2000

Number of employees

Overseas sales(¥ billion)

1995

2000

34,321

29,747

29,07030,000374.1

31,30528,055315.9
300

27,276275.5
20,000

209.2
200

147.2

157.9

158.1

170.9

165.0
10,000

8,287

8,011

100

0

7,727

7,607

7,498

7,405

1997

1998

1999

2000

0
1995

1996

1997

1998

1999

2000

1995

1996

Note: The years shown in the graphs are fiscal years, running from April to the following March, with “2000” referring to theyear ending March 31, 2000.

24

Data of Environmental Burden
at Major TDK Facilities*1

Major categories of environmental burden produced by TDK (1999 figures)
Raw material procurement

Raw energy procurement

TDK Corporation

Water

*3

3

3,498 km

Amount of environmental Amount of waste generated
burden produced
Waste water 2,988 km3 Sludge
*6

CO2
*2

*4

Principal raw materials 52,000 t Electricity 455,591 MWh

*7

*7

SOx
*5

Fuel
Domestic subsidiaries

44,022 kl
*3

3

Water

660 km18,244 t

6,030 t9,964 t9,126 t

232 t Waste plastic 2,822 t

2,099 t82,773 t-C Waste oilNOx

27 t Waste acid

*7

Dust

Amount ofwaste recycled

1,972 t50 t3,106 t2t6,214 t2,703 t

87 t Waste plastic 2,933 t

1,131 t18 t
*8

Waste water 540 km3 Sludge
*6

CO2
*4

29,384 t-C Waste oil*7Electricity 169,477 MWh

NOx
*7

SOx
*5

7 t Waste acid

202 t

0t

*7

Fuel

13,863 kl

Dust

3t

*1: Total of TDK parent and domestic consolidated subsidiaries’ product and R&D bases.
*2: Calculated based on materials purchases. *3: Includes water for industrial use and groundwater.
*4: The volume of electric power purchased (Does not include figures for electric power generated in-house using fuel).
*5: Figures are on a crude oil conversion basis calculated based on the enforcement ordinance of the Energy Conservation Law.
*6: Electric power and fuel converted to a CO2 basis. The CO2 conversion coefficients are the figures from the 1998 survey of the electric and electronic industry Voluntary Action Plan on the Environment.
*7: Calculated by multiplying the measured density annual average figure by the annual emissions volume. When the measured density is below the minimum value, then zero is used in the calculation.
*8: For facilities listing no waste water emissions, the emission volume is considered to be the volume of water consumed.

INDEX
Facilities with ISO 14001 Certification
26
Data of Environmental Burden at Major TDK Facilities
Hirasawa Plant
Chokai Plant
Kyoden Plant
Inakura Plant
Akita Plant
Shusekibuhin Plant
Kotoura Plant
Kisakata Plant
Narita Plant A and C areas
Narita Plant B area
Technical Center
Kofu Plant

27
27
28
29
30
31
32
33
34
35
36
36

Chikumagawa Plant
Chikumagawa 1st Technical Center
Chikumagawa 2nd Technical Center
Shizuoka Plant
Shizunami Plant
Sagara Plant
Mikumagawa Plant
Ujo TDK Corp.
Ouchi TDK Corp.
TDK-MCC Corp.
Iwaki Kogyo Corp.
Kisakata TDK Corp.
Fuji Kogyosho Corp.
Konoura TDK Corp.

37
38
38
39
39
39
40
41
41
42
42
43
43
44

Yuzawa TDK Corp.

44
45
45
Yuza TDK Corp.
46
Tsuruoka TDK Corp.
46
Sakata TDK Corp.
47
TDK Micro Device Corp.
47
Toso TDK Corp.
48
Kofu TDK Corp.
48
Media Technology Corp.
49
Iida TDK Corp.
49
Korea TDK Co., Ltd.
50TDK (Thailand) Co., Ltd., Rojana Plant 50
TDK Electronics Corp., California Plant 51
TDK Akita Components Corp., Honjou Plant
TDK Akita Components Corp., Yashima Plant

25

Facilities with ISO 14001 Certification(As of April 30, 2000)

Facility

Address

Certification date Certification number Certifying body

Mikumagawa Plant

3-793-1 Ishii-machi, Hita City, Oita Prefecture

1997. 4.21

EC97J1002

JACO

Yuzawa TDK Corp.

8-7 Kitsunezaki, Iwasaki, Yuzawa City, Akita Prefecture

1997.10.17

JQA-E-90059

JQA

Chokai Plant/Hirasawa Plant

15 Sannomori, Hirasawa, Nikaho-machi, Yuri-gun, Akita Prefecture 1998. 2.13

JQA-E-90107

JQA

Narita Plant B area

570-1 Matsugashita, Minamihadori, Narita City, Chiba Prefecture

1998. 3.20

JQA-E-90131

JQA

Narita Plant A and C areas570-2 Matsugashita, Minamihadori, Narita City, Chiba Prefecture

1998. 3.20

JQA-E-90140

JQA

Kyoden Plant/Inakura Plant

20 Kyoden, Hirasawa, Nikaho-machi, Yuri-gun, Akita Prefecture 1998. 4.10

JQA-EM0154

JQA

TDK-MCC Corp.

151 Maeda, Hirasawa, Nikaho-machi, Yuri-gun, Akita Prefecture 1998. 4.27

A6475

UL

Kofu Plant/Kofu TDK Corp.

160 Miyazawa, Kosai-cho, Nakakoma-gun, Yamanashi Prefecture

1998. 6. 5

JQA-EM-0171

JQA

Media Technology Corp.

801 Nakadate, Tamaho-cho, Nakakoma-gun, Yamanashi Prefecture 1998. 6.26

JQA-EM0177

JQA

Akita Plant

200 Tachisawa, Hirasawa, Nikaho-machi, Yuri-gun, Akita Prefecture 1998. 6.29

A6730

UL

Iida TDK Corp.

7659 Myo, Matsuo, Iida City, Nagano Prefecture

1998. 7.17

A6698

UL

Kisakata Plant

1-1 Okinoda, Kisakata-machi, Yuri-gun, Akita Prefecture

1998. 7.17

A6703

UL

Chikumagawa Plant

113 Nenei, Saku City, Nagano Prefecture

1998. 7.28

EC98J1025

JACO

1998. 7.31

JQA-EM0195

JQA

Iwaki Kogyo Corp.

16-2 Tamachi, Kameda-machi, Kameda, Iwaki-machi, Yuri-gun, Akita Prefecture 1998. 9.11

JQA-EM0217

JQA

Ujo TDK Corp.

50 Kamota, Ushiroseki, Midarehashi, Showa-machi, Minamiakita-gun, Akita Prefecture

1998. 9.14

A6978

UL

Sakata TDK Corp.

99-19 Meiji, Oaza Miyaumi, Sakata City, Yamagata Prefecture

1998.10. 9

JQA-EM0230

JQA

Kisakata TDK Corp.

100 Budojima, Kisakata-machi, Yuri-gun, Akita Prefecture

1998.11. 4

A7127

UL

Shizuoka/Sagara/Shizunami Plants 31-1 Megami, Sagara-cho, Haibara-gun, Shizuoka Prefecture

1998.11.20

JQA-EM0249

JQA

Toso TDK Corp.

10 Midoridaira, Yokaichiba City, Chiba Prefecture

1998.12.11

JQA-EM0283

JQA

Technical Center

2-15-7 Higashiowada, Ichikawa City, Chiba Prefecture

1998.12.25

JQA-EM0299

JQA

Konoura TDK Corp.

130 Juninomae, Konoura, Konoura-machi, Yuri-gun, Akita Prefecture

1999. 1. 4

A7317

UL

Ouchi TDK Corp.

146-1 Haraikawa, Sankawa, Ouchi-machi, Yuri-gun, Akita Prefecture

1999. 1.20

A7222

UL

TDK Akita Components Corp.

16-57 Yamanokami, Ishiwaki, Honjo City, Akita Prefecture

1999. 3.29

A7603

UL

Tsuruoka TDK Corp.

97 Aburada, Oaza Yamada, Tsuruoka, City, Yamagata Prefecture

1999. 4.21

A7605

UL

Yuza TDK Corp.

18-1 Maeda, Oaza Yuza-machi, Yuza-machi, Akumi-gun, Yamagata Prefecture

1999. 6. 1

A7829

UL

Kitaibaraki Site

644-55 Hitana Nakago-cho, Kitaibaraki City, Ibaraki Prefecture

2000. 4.23

A9092

UL

LRQA772040

LHQA

1999. 3.25

A7341

UL

1 TDK Boulevard , Highway 74 South, Peachtree City, GA 30269-2047 U.S.A. 1999. 4.22

A7470

UL

Korea TDK Co., Ltd.

670, Kasan-dong, Gumchon-Ku, Seoul, Republic of Korea

1999. 6.19

09 104 9252

TUV

TDK (Thailand) Co.,Ltd., Rojana Plant

Rojana Industrial Park 1/62 Moo 5. Rojana Road, Tambol Kanham,Amphur Uthai, Ayutthaya, 13210, Thailand

Domestic

Chikumagawa 2nd Technical Center 543 Otai, Saku City, Nagano Prefecture

Overseas
TDK (Malaysia) Sdn. Bhd.

Nilai Industrial Estates, 71800 Nilai, Negeri Sembilan, Malaysia 1998. 4.17

TDK Electronics Corporation, Georgia Plant 611 Highway 74 South, Peachtree City, GA 30269-2047 U.S.A.
TDK Compornents U.S.A., Inc.

1999. 8. 6

JQA-EM0493

JQA

Z.I Bommelscheuer, P.O. BOX 120 L-4902 Bascharage,
TDK Recording Media Europe S.A. the Grand Duchy of Luxembourg

1999.11. 4

1400 102ESCEM

TDK Electronics Corporation, California Plant Suite 100, 17871 Von Karman Avenue, lrvine, CA 92614 U.S.A.

1999.11. 5

A8355

UL

Discom, Inc.

334 Littleton Road, Westford, MA 01886 U.S.A.

1999.11.17

A8491

UL

TDK Taiwan Corporation, Yangmei Plant

159 Section 1, Chung Shan North Road, Tatung Li,
Yangmei, Taoyuan, Taiwan R.O.C.

1999.12. 7

A7608

UL

SAE Magnetics (H.K.) Ltd.

SAE Tower, 38-42 Kwai Fung Crescent, Kwai Chung, New Territories, Hong Kong 1999.12.15

01-1999-148

CCEMS

TDK Ferrites Corporation

5900 North Harrison Street, Shawnee, OK 74804 U.S.A.

2000. 1.17

A7894

UL

TDK Philippines Corporation

119 East Science Avenue Special Export Processing Zone
Laguna Technopark Binan, Laguna, the Philippines

2000. 2.23

09 104 9388

TUV

JACO: Japan Audit and Certification Organization JQA: Japan Quality Assurance Organization UL: Underwriters Laboratories Inc. TUV: TUV Rheinland/Berlin-Brandenburg
LRQA: LLOYD’S Resister Quality Assurance (head office: U.K.) ESCEM: European Society for Certification of Management System
CCEMS: China National Accreditation for Environmental Management System Certification Bodies

26

Fiscal 1999 Data by Facility
Water Quality (Water Pollution Control Law, prefectural regulations)

Hirasawa Plant

Location
15 Gashomen, Hirasawa, Nikaho-machi,
Yuri-gun, Akita Prefecture
Production
Metal electrodes
Size
Land: 10,000 square meters
Premises: 9,000 square meters
Completion July 1940
Number of employees 220

Category

Regulatory level

ActualAverage

MaximumpH

5.0–9.0

7.4

6.8–8.0(*1)

COD

60

ND

14

Suspended matter
Hexane extracts
PhenolCopperZinc
Soluble ironSoluble manganese
Fluorine
Number of coliform groups
Cadmium
Lead

120

ND

34
ND

5

ND

0.5

ND

ND

1

0.01

0.09

5

0.11

0.69

10

0.77

2

10

0.09

0.21

15

ND

ND

3000

790

2200

0.05

ND

ND

0.1

ND

0.03

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • COD: Chemical Oxygen Demand *1: Minimum and maximum pH values

Water Quality (Water Pollution Control Law, prefectural regulations)

Chokai Plant

Location
15 Sannomori, Hirasawa, Nikaho-machi,
Yuri-gun, Akita Prefecture
Production
Ferrite coresSize
Land: 50,000 square meters
Premises: 27,000 square meters
Completion April 1970
Number of employees 330

Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

7.5

7.1–7.8(*1)

BOD

160 (120)

ND

28

Suspended matter
Hexane extracts
PhenolCopperZinc
Soluble ironSoluble manganese
Fluorine
Number of coliform groups
CadmiumLead

200 (150)

ND

13

5

2

2.8

5

ND

ND

1

0.03

0.37

5

0.24

2.2

10

0.87

2.1

10

0.1

0.16

15

ND

ND

3000

660

2300

0.05

ND

ND

0.1

0.02

0.37(*2)• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand *1: Minimum and maximum pH values*2: Since improvements were made, figures have been below the regulatory level and there have been no problems (seepage 17 for information on countermeasures).

27

Water Quality (Water Pollution Control Law, prefectural regulations) Kyoden Plant

Kyoden Plant

Location
20 Kyoden, Hirasawa, Nikaho-machi,
Yuri-gun, Akita Prefecture
Production
Ferrite coresSize
Land: 39,000 square meters
Premises: 25,000 square meters
Completion July 1959
Number of employees 150

Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

7.4

7.1–7.7(*1)

BOD

160 (120)

ND

ND

Suspended matter
Hexane extracts
PhenolCopperZinc
Soluble ironSoluble manganese
Fluorine
Number of coliform groups
Cadmium

200 (150)

ND

10

Lead

5

ND

ND

5

ND

ND

1

ND

0.01

5

0.2

1.1

10

0.57

2.5

10

0.19

0.89

15

ND

ND

3000

ND

ND

0.05

ND

ND

0.1

ND

ND

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand *1: Minimum and maximum pH values

Water Quality (Water Pollution Control Law, prefectural regulations) Minami Plant
Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

7.5

7.1–7.9(*1)

BOD

160 (120)ND

12Suspended matter
Hexane extracts
PhenolCopperZinc
Soluble ironSoluble manganese
Fluorine
Number of coliform groups
CadmiumLead

200 (150)

ND

44

5

ND

ND

5

ND

ND

1

0.01

0.05

5

0.32

1.5

10

0.94

8.1

10

0.11

0.37

15

ND

ND

3000

410

840

0.05

ND

ND

0.1

ND

ND

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand *1: Minimum and maximum pH values

28Data of Environmental Burden at Major TDK Facilities

Atmosphere (Air Pollution Control Law, prefectural regulations)
Facility

Inakura Plant

Drying furnaces (9 units) Kerosene

Boilers(*4) (2 units)

Location
4-3, Tateishi, Kisakata-machi, Yuri-gun,
Akita Prefecture
Production
Ferrite cores, toner, magnetic film products
Size
Land: 135,000 square meters
Premises: 26,000 square meters
Completion July 1982
Number of employees 200

Fuel

Kerosene

Substances emitted(*1)

Regulatory level(*2) Actual(*3)

Sulfur oxides

4.32

Nitrogen oxides

230

27

Dust

0.2

0.1

Sulfur oxides

4.13

0.002

Nitrogen oxides

260

55

Dust

0.3

ND

0.003

*1: Units: Sulfur oxides: Nm3/h, Nitrogen oxides: ppm, Dust: g/Nm3 *2: Regulatory level values are based on the most
severe value in the target facility. *3: Actual figures are the highest figure in the year for the target facility.
*4: Kerosene boilers are subjected to prefectural regulations.

Water Quality (Water Pollution Control Law, prefectural regulations)Category

Regulatory level

ActualAverage

MaximumpH

5.0–9.0

7.6

7.1–8.0(*1)

BOD

160 (120)

ND

5

COD

30

ND

155(*2)

Suspended matter
Hexane extracts
PhenolCopperZinc
Soluble ironSoluble manganese
Fluorine
Cadmium
Lead

70

ND

14

5

ND

ND

5

ND

ND

1

0.03

0.71

5

0.23

0.87

10

0.46

3.8

10

0.29

1

15

ND

ND

0.05

ND

ND

0.1

ND

ND

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand • COD: Chemical Oxygen Demand*1: Minimum and maximum pH values*2: Since improvement were made, figures have been below the regulatory level and there have been no problems.

29

Atmosphere (Air Pollution Control Law, prefectural regulations)
Facility

Akita Plant

Boilers (6 units)

Boiler(*4)(1 unit)
Location
200 Tachisawa, Hirasawa, Nikaho-machi,
Yuri-gun, Akita Prefecture
Production
Ceramic raw materials
Size
Land: 65,000 square meters
Premises: 36,000 square meters
Completion December 1979
Number of employees 960

Diesel engines (2 units)

Fuel

Substances emitted(*1)

Sulfur oxides
LPG
Nitrogen oxides
Dust
Sulfur oxides
Kerosene
Nitrogen oxides
Dust
Sulfur oxides
Grade-A heavy oil Nitrogen oxides
Dust

Regulatory level(*2) Actual(*3)
1.21

0.009

150

100

0.1

0.02

2.03

0.002

260

69

0.3

ND

10.8

0.045

950

890

0.1

0.03

*1: Units: Sulfur oxides: Nm3/h, Nitrogen oxides: ppm, Dust: g/Nm3 *2: Regulatory level values are based on the most
severe value in the target facility. *3: Actual figures are the highest figure in the year for the target facility.
*4: Kerosene boilers are subjected to prefectural regulations.

Water Quality (Water Pollution Control Law, prefectural regulations)Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

7.1

6.5–7.7(*1)

BOD

30

6.13

20

Suspended matter
Hexane extracts
PhenolCopperZinc
Soluble ironSoluble manganese
Fluorine
Number of coliform group
Residual chlorine
CyanogenLead
1.1.1. Trichloroethane
Trichloroethylene
Tetrachloroethylene
Dichloromethane

70

5.02

6

5

1

1

0.5

0.1

0.1

1

0.01

0.03

5

0.14

0.69

10

0.09

0.31

10

0.02

0.06

15

0.2

0.2

3000

33.25

43

–

0.1

0.2

0.1

0.02

0.02

0.1

0.01

0.04

3

0.001

0.001

0.3

0.001

0.001

0.1

0.001

0.001

0.2

0.02

0.02

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand *1: Minimum and maximum pH values

30Data of Environmental Burden at Major TDK Facilities

Atmosphere (Air Pollution Control Law, prefectural regulations)

Shusekibuhin Plant

Facility

Fuel

Boiler (1 unit)

Sulfur oxides
Grade-A heavy oil Nitrogen oxides
Dust

Substances emitted(*1)

Regulatory level(*2) Actual(*3)
4.2

0.013

260

60

0.3

0.01

*1: Units: Sulfur oxides: Nm3/h, Nitrogen oxides: ppm, Dust: g/Nm3*2: Regulatory level values are based on the most severe value in the target facility.
*3: Actual figures are the highest figure in the year for the target facility.

Location96-1 Maeda, Hirasawa, Nikaho-machi,
Yuri-gun, Akita Prefecture
Production
Plating of electronic components
Size
Land: 27,000 square meters
Premises: 18,000 square meters
Completion October 1991
Number of employees(Included in Akita Plant)

Water Quality (Water Pollution Control Law, prefectural regulations)Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

6.8

6.0–7.4(*1)

BOD

30

5.7

13

Suspended matter
Hexane extracts
PhenolCopperZinc
Soluble ironSoluble manganese
Fluorine
Number of coliform groups
Residual chlorine
Lead
1.1.1. Trichloroethane
Trichloroethylene
Tetrachloroethylene
Dichloromethane

70

5.29

18

5

1

1

0.5

0.1

0.1

1

0.02

0.07

5

0.06

0.57

10

0.08

0.3

10

0.03

0.07
0.2

15

0.2

3000

45

120

–

0.2

0.4

0.1

0.01

0.01

3

0.001

0.001

0.3

0.001

0.001

0.1

0.001

0.001

0.2

0.02

0.02

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand *1: Minimum and maximum pH values

31

Atmosphere (Air Pollution Control Law, prefectural regulations)
Facility

Kotoura Plant

Boiler (1 unit)

Boilers(*4) (2 units)
Location
38 Furusato, Hirasawa, Nikaho-machi,
Yuri-gun, Akita Prefecture
Production
Ceramic raw materials
Size
Land: 26,000 square meters
Premises: 17,000 square meters
Completion March 1953
Number of employees 120

Fuel
LPG

Kerosene

Substances emitted(*1)

Regulatory level(*2) Actual(*3)

Sulfur oxides
Nitrogen oxides
Dust
Sulfur oxides
Nitrogen oxides
Dust

0.995

0.003

150

76

0.1

0.01

2.06

0.005

250

71

0.3

0.01

*1: Units: Sulfur oxides: Nm3/h, Nitrogen oxides: ppm, Dust: g/Nm3 *2: Regulatory level values are based on the most
severe value in the target facility. *3: Actual figures are the highest figure in the year for the target facility.
*4: Kerosene boilers are subjected to prefectural regulations.

Water Quality (Water Pollution Control Law, prefectural regulations) Kotoura SD Plant
Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

7.3

6.5–7.8(*1)

BOD

30

5.53

22

Suspended matter
Hexane extracts
PhenolCopperZinc
Soluble manganese
Fluorine
Number of coliform groups
Residual chlorine
Lead
1.1.1. Trichloroethane
Trichloroethylene
Tetrachloroethylene
Dichloromethane

70

5

5

5

1.3

2.2

0.5

0.1

0.1

1

0.01

0.03

5

0.03

0.09

10

0.02

0.08
0.2

15

0.2

3000

63.75

100

–

0.05

0.05
0.01

0.1

0.01

3

0.001

0.001

0.3

0.001

0.001

0.1

0.001

0.001

0.2

0.02

0.02

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand *1: Minimum and maximum pH values

Water Quality (Water Pollution Control Law, prefectural regulations) Kotoura Plant
Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

7.4

6.8–7.8(*1)

BOD

30

5.25

12

Suspended matter
Hexane extracts
PhenolCopperZinc
Soluble manganese
Fluorine
Number of coliform groups
Residual chlorine
Lead
1.1.1. Trichloroethane
Trichloroethylene
Tetrachloroethylene
Dichloromethane

70

5.22

11

5

1.35

1.8

0.5

0.1

0.1

1

0.01

0.04

5

0.07

0.39

10

0.03

0.09
0.2

15

0.2

3000

22.5

30

–

0.1

0.2
0.01

0.1

0.01

3

0.001

0.001

0.3

0.001

0.001

0.1

0.001

0.001

0.2

0.02

0.02

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand *1: Minimum and maximum pH values

32

Data of Environmental Burden at Major TDK Facilities

Atmosphere (Air Pollution Control Law, prefectural regulations)
Facility

Kisakata Plant

Heaters (2 units)

Boilers (2 units)
Location
1-1 Okinoda, Kisakata-machi, Yuri-gun,
Akita Prefecture
Production
Coils, machinery
Size
Land: 48,000 square meters
Premises: 19,000 square meters
Completion December 1959
Number of employees 480

Boilers(*4) (2 units)

Fuel

Substances emitted(*1)

Sulfur oxides
Grade-A heavy oil Nitrogen oxides
Dust
Sulfur oxides
Grade-A heavy oil Nitrogen oxides
Dust
Sulfur oxides
Kerosene
Nitrogen oxides
Dust

Regulatory level(*2) Actual(*3)
0.711

0.006

180

68

0.3

ND

0.494

0.009

180

74

0.3

ND

2.28

ND

260

60

0.3

ND

*1: Units: Sulfur oxides: Nm3/h, Nitrogen oxides: ppm, Dust: g/Nm3 *2: Regulatory level values are based on the most
severe value in the target facility. *3: Actual figures are the highest figure in the year for the target facility.
*4: Kerosene boilers are subjected to prefectural regulations.

Water Quality (Water Pollution Control Law, prefectural regulations)Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

7.4

6.3–8.1(*1)

BOD

30

ND

ND

Suspended matter
Hexane extracts
PhenolCopperZinc
Soluble ironSoluble manganese
Total chromium
Fluorine
Cyanogen
Lead

70

ND

ND

5

1

1

5

ND

ND

1

0.01

0.05

5

0.13

0.89

10

0.61

5.4

10

0.05

0.46

2

ND

ND

15

ND

ND

0.1

ND

ND

0.1

0.01

0.04

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand *1: Minimum and maximum pH values

33

Atmosphere (Atmosphere Pollution Control Law, prefectural regulations)
Facility

Narita Plant, A and C areas

Cool and hot-water generator Kerosene(1 unit)

Incinerator (1 unit)

Location
570-2 Matsugashita, Minamihadori,
Narita City, Chiba Prefecture
Production
Metal magnets, composite magnetic
materials, magnet application products,
power supply products, advanced
information-network products, metal
magnetic materials
Size
Land: 79,000 square meters
Premises: 49,000 square meters
Completion August 1978
Number of employees 740

Fuel

Waste

Substances emitted(*1)

Regulatory level(*2) Actual(*3)

Sulfur oxides

2.3

ND

Nitrogen oxides

180

51

Dust

–

0.01

Sulfur oxides

0.875

0.04

Nitrogen oxides

250

75

Dust

0.5

0.19

Hydrogen chloride

700

177

• 1: Units: Sulfur oxides: Nm3/h, Nitrogen oxides: ppm, Dust: g/Nm3, Hydrogen chloride: mg/Nm3• 2: Regulatory level values are based on the most severe value in the target facility.
• 3: Actual figures are the highest figure in the year for the target facility.

Water Quality (Water Pollution Control Law, prefectural regulations)Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

7.9

7.5–8.3(*1)

BOD

20

0.7

1.4

COD

160 (120)

1.6

5.9

Suspended matter

40

ND

6

Hexane extracts

3

ND

ND

Phenol

0.5

ND

ND

Copper

1

ND

ND

Zinc

1

ND

ND

Soluble iron

5

ND

0.7

Soluble manganese

5

ND

ND

Total chromium

0.5

ND

ND

Fluorine

10

ND

ND

Number of coliform groups

3000

ND

ND

Cadmium

0.01

ND

ND

Cyanogen

ND

ND

ND

Lead

0.1

ND

ND

Hexavalent chromium

0.05

ND

ND

Arsenic

0.05

ND

ND

Total mercury

0.0005ND

ND

1.1.1. Trichloroethane

3

ND

ND

Trichloroethylene

0.3

ND

ND

Tetrachloroethylene

0.1

ND

ND

Dichloromethane

0.2

ND

ND

Selenium

0.1

ND

ND

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand• COD: Chemical Oxygen Demand *1: Minimum and maximum pH values

34

Data of Environmental Burden at Major TDK Facilities

Atmosphere (Air Pollution Control Law, prefectural regulations)
Facility

Fuel

Narita Plant, B area
Roasting furnaces (2 units) LPG

Location
570-1 Matsugashita, Minamihadori,
Narita City, Chiba Prefecture
Production
Ferrite cores, microwave devices
Size
Land: 53,000 square meters
Premises: 16,000 square meters
Completion December 1980
Number of employees 310

Refine reaction tower (1 unit)

Waste gas incinerator (1 unit) Hydrogen

Substances emitted(*1)

Regulatory level(*2) Actual(*3)

Sulfur oxides–

ND

Nitrogen oxides

220

119

Dust

0.15

0.062

Hydrogen chloride

80

76

Sulfur oxides–

ND

Nitrogen oxides

–

ND

Dust

–

0.002

Hydrogen chloride

80

8Sulfur oxides–

ND

Nitrogen oxides

150

77

Dust

0.1

0.016

Hydrogen chloride

80

14*1: Units: Sulfur oxides: Nm3/h, Nitrogen oxides: ppm, Dust: g/Nm3, Hydrogen chloride: mg/Nm3*2: Regulatory level values are based on the most severe value in the target facility.
*3: Actual figures are the highest figure in the year for the target facility.

Water Quality (Water Pollution Control Law, prefectural regulations)Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

7.2

6.9–7.8(*1)

BOD

20

0.7

1.4

COD

160 (120)

1.5

2.1

Suspended matter

40

ND

1

Hexane extracts

3

ND

ND

Phenol

0.5

ND

ND

Copper

1

ND

0.03

Zinc

1

ND

ND

Soluble iron

5

ND

0.1

Soluble manganese

5

ND

0.9

Total chromium

0.5

ND

ND

Fluorine

10

ND

ND

Number of coliform groups

3000

ND

ND

Cadmium

0.01

ND

ND

Cyanogen

ND

ND

ND

Lead

0.1

ND

ND

Hexavalent chromium

0.05

ND

ND

Arsenic

0.05

ND

ND

Total mercury

0.0005ND

ND

1.1.1. Trichloroethane

3

ND

ND

Trichloroethylene

0.3

ND

ND

Tetrachloroethylene

0.1

ND

ND

Dichloromethane

0.2

ND

ND

Selenium

0.1

ND

ND

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand • COD: Chemical Oxygen Demand*1: Minimum and maximum pH values

35

Atmosphere (Air Pollution Control Law, prefectural regulations)
Facility

Technical Center

Location
2-15-7 Higashi Owada, Ichikawa City,
Chiba Prefecture
Development Center
Size
Land: 33,000 square meters
Premises: 51,000 square meters
Completion September 1960
Number of employees 910

Boilers (5 units)

FuelCity Gas

Substances emitted(*1)

Regulatory level(*2) Actual(*3)

Sulfur oxides

0.36

Nitrogen oxides

150

79

Dust

0.1

0.001

ND

Note:
*1: Units: Sulfur oxides: Nm3/h, Nitrogen oxides: ppm, Dust: g/Nm3*2: Regulatory level values are based on the most severe value in the target facility.
*3: Actual figures are the highest figure in the year for the target facility.

Water Quality (Sewage Law, city regulations)Category

Regulatory level

ActualAverage

MaximumpH

5.0–9.0

7.3

6.8–7.8(*1)

BOD

600

5

21

Suspended matter

600

3.6

5.2

Hexane extracts

5

ND

ND

Copper

1

0.01

0.02

Zinc

3

0.1

1.6

Soluble iron

5

0.02

0.12

Soluble manganese

5

ND

0.02

Nitrogen

60

2

4.4

Phosphorus

8

1

2.13

Cadmium

0.01

ND

ND

Lead

0.1

ND

ND

1.1.1. Trichloroethane

3

ND

ND

Trichloroethylene

0.3

ND

ND

Tetrachloroethylene

0.1

ND

ND

Dichloromethane

0.2

ND

ND

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand *1: Minimum and maximum pH values

Atmosphere (Air Pollution Control Law)
Facility

Kofu Plant

Boilers (3 units)

Fuel
LPG

Substances emitted(*1)

Regulatory level(*2) Actual(*3)

Sulfur oxides

2.87

Nitrogen oxides

150

120

Dust

0.1

ND

ND

*1: Units: Sulfur oxides: Nm3/h, Nitrogen oxides: ppm, Dust: g/Nm3*2: Regulatory level values are based on the most severe value in the target facility.
*3: Actual figures are the highest figure in the year for the target facility.

Location
160 Miyazawa, Kosai-cho, Nakakoma-gun,
Yamanashi Prefecture
Production
Various types of recording heads
Size
Land: 93,000 square meters
Premises: 35,000 square meters
Completion June 1982
Number of employees 560

Water Quality (Water Pollution Control Law, prefectural regulations)Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

7.2

6.9–7.4(*1)

BOD

30 (20)

4.7

7.8

COD

30 (20)4.6

9.7

Suspended matter

50 (30)

1.6

3.9

Hexane extracts

10

0.5

0.5

Copper

1

0.05

0.05

Zinc

1

0.064

0.14

Soluble iron

1

0.109

0.32

Soluble manganese

1

0.058

0.1

Fluorine

1

0.2

0.2

Number of coliform groups

1000

ND

ND

Lead

0.1

0.05

0.05

1.1.1. Trichloroethane

3

ND

ND

Trichloroethylene

0.3

ND

ND

Tetrachloroethylene

0.1

ND

ND

Dichloromethane

0.2

ND

ND

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand • COD: Chemical Oxygen Demand*1: Minimum and maximum pH values

36Data of Environmental Burden at Major TDK Facilities

Atmosphere (Air Pollution Control Law)
Facility

Chikumagawa Plant

Boilers (2 units)

Fuel

Substances emitted(*1)

Regulatory level(*2) Actual(*3)

Sulfur oxides

18

Grade-A heavy oil Nitrogen oxides
Dust

0.2

150

120

0.25

0.013

*1: Units: Sulfur oxides: Nm3/h, Nitrogen oxides: ppm, Dust: g/Nm3*2: Regulatory level values are based on the most severe value in the target facility.
*3: Actual figures are the highest figure in the year for the target facility.

Location
113 Nenei, Saku City, Nagano Prefecture
Production
Optical disksSize
Land: 110,000 square meters
Premises: 54,000 square meters
Completion December 1969
Number of employees 670

Water Quality (Water Pollution Control Law, city regulations)Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

7.7

7.4–7.9(*1)

BOD

20

1.2

2.8

COD

60

4.1

4.7

Suspended matter

40

1.7

4

Hexane extracts

5

ND

ND

Phenol5

ND

ND

Copper

3

ND

ND

Zinc

5

0.04

0.05

Soluble iron

10

ND

0.2

Soluble manganese

10

ND

ND

Total chromium

2

ND

ND

Fluorine

15

0.12

0.13

Number of coliform groups

3000

9

58

Total nitrogen

120

16

23

Total phosphorus

16

0.9

1.8

Cadmium

0.05

ND

ND

Cyanogen

0.5

ND

ND

Lead

0.1

ND

ND

Hexavalent chromium

0.3

ND

ND

Arsenic

0.1

ND

ND

Total mercury

0.003

ND

ND

1.1.1. Trichloroethane

3

ND

ND

Trichloroethylene

0.3

ND

ND

Tetrachloroethylene

0.1

ND

ND

Dichloromethane

0.2

ND

ND

Selenium

0.1

ND

ND

Benzene

0.1

ND

ND

Carbon tetrachloride

0.02

ND

ND

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand • COD: Chemical Oxygen Demand*1: Minimum and maximum pH values

37

Atmosphere (Air Pollution Control Law)
Facility

Chikumagawa
1st Technical Center

Boiler (1 unit)

Fuel

Substances emitted(*1)

Regulatory level(*2) Actual(*3)

Sulfur oxides

14

Grade-A heavy oil Nitrogen oxides
Dust

0.14

180

69

0.3

0.013

*1: Units: Sulfur oxides: Nm3/h, Nitrogen oxides: ppm, Dust: g/Nm3*2: Regulatory level values are based on the most severe value in the target facility.
*3: Actual figures are the highest figure in the year for the target facility.

Location462-1 Otai, Saku City, Nagano Prefecture
Development Center
Size
Land: 74,000 square meters
Premises: 16,000 square meters
Completion November 1983
Number of employees 110

Water Quality (Water Pollution Control Law, city regulations)Category

Regulatory level

ActualAverage

MaximumpH

6.0–8.5

7.7

7.5–7.9(*1)

BOD

20

1.7

3.8

Suspended matter

40

2.3

6

Hexane extracts

5

ND

ND

Number of coliform groups

3000

9

47

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected. • pH: hydrogen ion exponent• BOD: Biochemical Oxygen Demand *1: Minimum and maximum pH values

Water Quality (Water Pollution Control Law, city regulations)

Chikumagawa
2nd Technical Center

Location
543 Otai, Saku City, Nagano Prefecture
Production
Thin-film heads
Size
Land: 95,000 square meters
Premises: 13,000 square meters
Completion June 1986
Number of employees 420

Category

Regulatory level

ActualAverage

MaximumpH

6.0–8.5

7.2

7.0–7.9(*1)

BOD

20

3.14

8.3

Suspended matter

40

6

2.9

Hexane extracts

5

1

1

Phenol

5

0.02

0.02

Copper

3

0.06

0.14

Soluble iron

10

0.2

0.2

Fluorine

15

0.2

0.36

Number of coliform groups

3000

6.67

44

Cadmium

0.1

0.005

0.005

Cyanogen

1

0.1

0.1

Lead

0.1

0.01

0.01

Hexavalent chromium

0.5

0.02

0.02

Arsenic

0.1

0.01

0.01

Total mercury

0.005

0.00050.0005• Unit: mg per liter, apart from pH • ND means below the volume that can be detected. • pH: hydrogen ion exponent• BOD: Biochemical Oxygen Demand *1: Minimum and maximum pH values

38

Data of Environmental Burden at Major TDK Facilities

Atmosphere (Air Pollution Control Law, prefectural regulations)
Facility

Shizuoka Plant

Fuel

Calcination furnace (3 units) Kerosene

Calcination furnace (1 units) LPG

Location
31-1 Megami, Sagara-cho, Haibara-gun,Shizuoka Prefecture
Production
Ferrite magnets
Size
Land: 58,000 square meters
Premises: 21,000 square meters
Completion May 1970
Number of employees 260

Substances emitted(*1)

Regulatory level(*2) Actual(*3)

Sulfur oxides

4.48

Nitrogen oxides

220

130

Dust

0.15

0.04

Sulfur oxides

4.48

0.03

Nitrogen oxides

220

96

Dust

0.15

ND

0.09

*1: Units: Sulfur oxides: Nm3/h, Nitrogen oxides: ppm, Dust: g/Nm3*2: Regulatory level values are based on the most severe value in the target facility.
*3: Actual figures are the highest figure in the year for the target facility.

Water Quality (Water Pollution Control Law, Pollution Control Agreement)
Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

7.3

7.0–8.0(*1)

BOD

25 (20)2

6COD

160 (120)918

Suspended matter

40 (30)2

15

Hexane extracts

5

0.6

0.7

Soluble iron

10

0.14

0.24

Number of coliform groups

3000

30

30

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand • COD: Chemical Oxygen Demand*1: Minimum and maximum pH values

Water Quality (Water Pollution Control Law)

Shizunami Plant

Location
712-1 Hosoe, Haibara-cho, Haibara-gun,Shizuoka Prefecture
Production
Ferrite magnets
Size
Land: 17,000 square meters
Premises: 8,000 square meters
Completion April 1979
Number of employees 160

Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

7.4

7.1–7.6(*1)

BOD

160 (120)

8

17

COD

160 (120)6487Suspended matter

200 (150)

411Hexane extracts

5

1.4

1.4

Soluble iron

10

0.02

0.02

Number of coliform groups

3000

60

60

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand • COD: Chemical Oxygen Demand*1: Minimum and maximum pH values

Water Quality (Water Pollution Control Law, Pollution Control Agreement)

Sagara Plant

Location
117-1 Shirai, Sagara-cho, Haibara-gun,Shizuoka Prefecture
Production
Ferrite magnets
Size
Land: 32,000 square meters
Premises: 8,000 square meters
Completion August 1984
Number of employees 80

Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

7.4

7.1–8.0(*1)

BOD

160 (120)1

3

Suspended matter

40 (30)2

5Hexane extracts

5

2.1

3.3

Soluble iron

10

0.08

0.15

Number of coliform groups

3000

ND

ND

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand *1: Minimum and maximum pH values

39

Atmosphere (Air Pollution Control Law, Pollution Control Agreement)
Facility

Mikumagawa Plant

Boilers (2 units)

EGI(*4) (2 units)

Location
3-793-1 Ishi-machi, Hita City, Oita Prefecture
Production
Video and audio tapesSize
Land: 100,000 square meters
Premises: 33,000 square meters
Completion May 1982
Number of employees 340

Incinerator

Fuel

Substances emitted(*1)

Regulatory level(*2) Actual(*3)

Sulfur oxides

2

Grade-A heavy oil Nitrogen oxides

Organic solvent gas
Grade-A heavy oil

Waste

0.15

200

180

Dust

0.1

0.001

Sulfur oxides

–

0.27

Nitrogen oxides

200

65

Dust

–

0.002

Sulfur oxides

0.2

0.04

Nitrogen oxides

200

33

0.2

0.05

200

14

Grade-A heavy oil Dust
Hydrogen chloride*1: Units: Sulfur oxides: Nm3/h, Nitrogen oxides: ppm, Dust: g/Nm3. Hydrogen chloride: mg/Nm3 *2: Regulatory level values are
based on the most severe value in the target facility. *3: Actual figures are the highest figure in the year for the target facility.
*4: EGI is a device to remove foul smell, installed in accordance with Pollution Control Agreement with Hita City.

Water Quality (Water Pollution Control Law, Pollution Control Agreement)
Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

7.8

7.4–8.1(*1)

BOD

120

1.2

14

Suspended matter

150

3.12

23

Hexane extracts

5

0.5

0.5

Number of coliform groups

3000

41

860

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand *1: Minimum and maximum pH values

40Data of Environmental Burden at Major TDK Facilities

Atmosphere (Air Pollution Control Law, prefectural regulations)
Facility

Ujo TDK Corp.

Boiler (*4) (1 unit)

Fuel
Kerosene

Substances emitted(*1)

Regulatory level(*2) Actual(*3)

Sulfur oxides

0.899

Nitrogen oxides

180

85

Dust

0.3

ND

ND

*1: Units: Sulfur oxides: Nm3/h, Nitrogen oxides: ppm, Dust: g/Nm3. *2: Regulatory level values are based on the most severevalue in the target facility. *3: Actual figures are the highest figure in the year for the target facility.
*4: Kerosene boilers are subject to prefectural regulations.

Location
50 Kamota, Ushiroseki, Midarehashi,Showa-machi, Minamiakita-gun, Akita Prefecture
Production
Multilayer chip capacitors,
Medium and high voltage capacitors
Size
Land: 16,000 square meters
Premises: 4,000 square meters
Completion October 1968
Number of employees 160

Water Quality (Water Pollution Control Law)
Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

6.8

6.7–6.9(*1)

BOD

160 (120)

7.8

7.8

COD

160 (120)

4.5

4.5

Suspended matter

200 (150)810Hexane extracts

5

ND

ND

Number of coliform groups

3000

153

270

Lead

0.1

ND

ND

Dichloromethane

0.2

ND

ND

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand• COD: Chemical Oxygen Demand *1: Minimum and maximum pH values

Atmosphere (Air Pollution Control Law, prefectural regulations)
Facility

Ouchi TDK Corp.

Boilers (*4) (3 units)

Fuel
Kerosene

Cool and hot-water generator Kerosene(3 units)

Location146-1 Haraikawa, Sankawa, Ouchi-machi,
Yuri-gun, Akita Prefecture
Production
Multilayer chip devices
Size
Land: 42,000 square meters
Premises: 13,000 square meters
Completion January 1970
Number of employees 430

Substances emitted(*1)

Regulatory level(*2) Actual(*3)

Sulfur oxides

1.51

Nitrogen oxides

260

65

Dust

0.3

0.01

Sulfur oxides

1.58

0.003

Nitrogen oxides

260

44

Dust

0.3

0.01

0.004

*1: Units: Sulfur oxides: Nm3/h, Nitrogen oxides: ppm, Dust: g/Nm3. *2: Regulatory level values are based on the most severevalue in the target facility.*3: Actual figures are the highest figure in the year for the target facility.
*4: Kerosene boilers are subject to prefectural regulations.

Water Quality (Water Pollution Control Law, prefectural regulations)Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

6.8

6.6–7.3(*1)

BOD

30

7.3

11

Suspended matter

70

6.5

10

Hexane extracts

5

1

1

Phenol

0.5

0.01

0.01

Copper

1

0.03

0.05

Zinc

5

0.16

0.27

Soluble iron

10

0.28

0.53

Soluble manganese

10

0.06

0.11

Number of coliform groups

3000

23.75

65

Lead

0.1

0.01

0.01

Arsenic

0.1

0.01

0.01

Dichloromethane

0.2

0.02

0.02

Phosphorus

16

0.64

1.3

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand *1: Minimum and maximum pH values

41

Atmosphere (Air Pollution Control Law, prefectural regulations)
Facility

TDK-MCC Corp.

Boilers(*4) (14 units)

Fuel
Kerosene

Refrigerating machines (3 units) Kerosene

Location
151 Maeda, Hirasawa, Nikaho-machi,
Yuri-gun, Akita Prefecture
Production
Multilayer chip devices
Size
Land: 34,000 square meters
Premises: 12,000 square meters
Completion June 1971
Number of employees 750

Substances emitted(*1)

Regulatory level(*2) Actual(*3)

Sulfur oxides

0.853

Nitrogen oxides

180

91

Dust

0.3

ND

Sulfur oxides

0.934

ND

Nitrogen oxides

180

59

Dust

0.3

ND

ND

*1: Units: Sulfur oxides: Nm3/h, Nitrogen oxides: ppm, Dust: g/Nm3. *2: Regulatory level values are based on the most
severe value in the target facility. *3: Actual figures are the highest figure in the year for the target facility.
*4: Kerosene boilers are subject to prefectural regulations.

Water Quality (Water Pollution Control Law)
Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

6.8

6.3–7.3(*1)

BOD

160 (120)

30.7

62

Suspended matter

200 (150)

17.6

39

Hexane extracts

5

ND

ND

Copper

3

0.03

0.04

Soluble iron

10

0.7

1.9

Soluble manganese

10

0.1

0.27

Total chromium

2

ND

ND

Number of coliform groups

3000

412.5

860

Lead

0.1

ND

ND

Hexavalent chromium

0.5

ND

ND

1.1.1. Trichloroethane

3

ND

ND

Trichloroethylene

0.3

ND

ND

Tetrachloroethylene

0.1

ND

ND

Dichloromethane

0.2

ND

ND

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand *1: Minimum and maximum pH values

Water Quality (Water Pollution Control Law, prefectural regulations)

Iwaki Kogyo Corp.

Location
16-2 Tamachi, Kameda-machi, Kameda,
Iwaki-machi, Yuri-gun, Akita Prefecture
Production
NEO magnets, chip capacitors
Size
Land: 9,000 square meters
Premises: 4,000 square meters
Completion July 1972
Number of employees 90

42

Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

7.0

6.6–7.3(*1)

BOD

30

14

28

Suspended matter

70

12

28

Copper

1

0.06

0.21

Zinc

5

ND

0.01

Soluble iron

10

0.4

1

Total chromium

2

0.02

0.23

Fluorine

15

1.54

3

Cyanogen

0.1

ND

ND

Lead

0.1

ND

0.01

Hexavalent chromium

0.2

ND

ND

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand *1: Minimum and maximum pH values

Data of Environmental Burden at Major TDK Facilities

Atmosphere (Air Pollution Control Law, prefectural regulations)
Facility

Kisakata TDK Corp.

Boilers(*4) (2 units)

Fuel
Kerosene

Substances emitted(*1)

Regulatory level(*2) Actual(*3)

Sulfur oxides

0.868

Nitrogen oxides

180

73

Dust

0.3

ND

ND

*1: Units: Sulfur oxides: Nm3/h, Nitrogen oxides: ppm, Dust: g/Nm3 *2: Regulatory level values are based on the most
severe value in the target facility. *3: Actual figures are the highest figure in the year for the target facility.
*4: Kerosene boilers are subject to prefectural regulations.

Location
100 Budojima, Kisakata-machi, Yuri-gun,
Akita Prefecture
Production
High-voltage capacitors, ring varistors
Size
Land: 37,000 square meters
Premises: 10,000 square meters
Completion September 1972
Number of employees 300

Water Quality (Water Pollution Control Law, prefectural regulations)Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

7.4

6.7–8.1(*1)

BOD

30

5.3

9

Suspended matter

70

5.29

7

Hexane extracts

5

ND

ND

Copper

1

0.02

0.06

Soluble iron

10

0.13

0.22

Number of coliform groups

3000

22.5

30

Lead

0.1

0.01

0.04

Dichloromethane

0.2

ND

ND

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand *1: Minimum and maximum pH values

Water Quality (Voluntary measurement)
ActualAverage

MaximumpH

7.2

5.8–7.6(1*)

BOD

9.82

31

Suspended matter

23.77

170

Hexane extracts

1

1

Category

Fuji Kogyosho Corp.

Location
167 Denkakumori, Hirasawa, Nikaho-machi,
Yuri-gun, Akita Prefecture
Production
Line filters, SF coils, TF coilsSize
Land: 3,000 square meters
Premises: 1,000 square meters
Completion November 1972
Number of employees 70

Regulatory level

Copper

0.02

0.02

Zinc

0.07

0.07

Soluble iron

0.03

0.03

Soluble manganese

0.03

0.03

Number of coliform groups

30

30

Lead

0.03

0.16

Total mercury

0.00050.0005

Dichloromethane

0.02

0.02

* Unit: mg per liter, apart from pH * ND means below the volume that can be detected.
* pH: hydrogen ion exponent * BOD: Biochemical Oxygen Demand *1: Minimum and maximum pH values

43

Atmosphere (Air Pollution Control Law, prefectural regulations)
Facility

Konoura TDK Corp.

Boilers (*4) (4 units)

Fuel
Kerosene

Substances emitted(*1)

Regulatory level(*2) Actual(*3)

Sulfur oxides

0.945

Nitrogen oxides

180

91

Dust

0.3

ND

ND

*1: Units: Sulfur oxides: Nm3/h, Nitrogen oxides: ppm, Dust: g/Nm3 *2: Regulatory level values are based on the most
severe value in the target facility. *3: Actual figures are the highest figure in the year for the target facility.
*4: Kerosene boilers are subject to prefectural regulations.

Location
130 Juninomae, Konoura, Konoura-machi,
Yuri-gun, Akita Prefecture
Production
High-frequency coils,
high-frequency superposition module
Size
Land: 25,000 square meters
Premises: 7,000 square meters
Completion December 1974
Number of employees 570

Water Quality (Water Pollution Control Law, prefectural regulations)Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

6.8

6.6–7.0(*1)

BOD

120

7.3

12

Suspended matter

200

47.5

92

Hexane extracts

5

ND

ND

Copper

2

0.015

0.03

Zinc

5

0.2

0.27

Number of coliform groups

3000

165

230

Cadmium

0.1

ND

ND

Cyanogen

0.1

ND

ND

Lead

1

ND

ND

Arsenic

0.5

ND

ND

Total mercury

0.05

ND

ND

Dichloromethane

0.2

ND

ND

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand *1: Minimum and maximum pH values

Atmosphere (Air Pollution Control Law, prefectural regulations)
Facility

Yuzawa TDK Corp.

Boilers (2 units)

Fuel

Substances emitted(*1)

Regulatory level(*2) Actual(*3)

Sulfur oxides

2.27

Grade-A heavy oil Nitrogen oxides
Dust

0.058

260

59

–

ND

*1: Units: Sulfur oxides: Nm3/h, Nitrogen oxides: ppm, Dust: g/Nm3. *2: Regulatory level values are based on the most
severe value in the target facility. *3: Actual figures are the highest figure in the year for the target facility.

Location
8-7 Kitsunezaki, Iwasaki, Yuzawa City,
Akita Prefecture
Production
Multilayer chip products, ferrite chip beads,
Microchip filters
Size
Land: 21,000 square meters
Premises: 1,000 square meters
Completion February 1985
Number of employees 280

Water Quality (Water Pollution Control Law, prefectural regulations)Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

7.0

7.0–7.0(*1)

BOD

60

8.1

8.1

COD

60

11

11

Suspended matter

120

8

8

Hexane extracts

5

1

1

Copper

1

0.06

0.06

Zinc

5

0.13

0.13

Soluble iron

10

0.09

0.09

Soluble manganese

10

0.03

0.03

Number of coliform groups

3000

12

12

Lead

0.1

0.01

0.01

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand • COD: Chemical Oxygen Demand*1: Minimum and maximum pH values

44Data of Environmental Burden at Major TDK Facilities

Water Quality (Water Pollution Control Law) Honjo 1st Plant

TDK Akita Components Corp.
Honjo Plant

Location
16-57 Yamanokami, Ishiwaki, Honjo City,
Akita Prefecture
Production
DC/DC converters, NTC thermistors
Size
Land: 47,000 square meters
Premises: 7,000 square meters
Completion July 1973
Number of employees 400

Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

6.6

6.3–6.9(*1)

BOD

160 (120)

8.6

11Suspended matter

200 (150)

9.5

16Hexane extracts

5

ND

ND

Number of coliform groups

3000

15

30

Lead

0.1

ND

ND

Dichloromethane

0.2

ND

ND

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand *1: Minimum and maximum pH values

Water Quality (Water Pollution Control Law) Honjo 2nd Plant
Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

6.3

6.0–6.6(*1)

BOD

160 (120)21

35

Suspended matter

200 (150)

10.5

17

Hexane extracts

5

2

3

Number of coliform groups

3000

126

180

Lead

0.1

ND

ND

Dichloromethane

0.2

ND

ND

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand *1: Minimum and maximum pH values

Atmosphere (Air Pollution Control Law, prefectural regulations)
Facility

TDK Akita Components Corp.
Yashima Plant

Boilers (4 units)

Fuel

Substances emitted(*1)

Regulatory level(*2) Actual(*3)

Sulfur oxides

0.393

0.009

260

79

0.3

0.01

Grade-A heavy oil Nitrogen oxides
Dust*1: Units: Sulfur oxides: Nm3/h, Nitrogen oxides: ppm, Dust: g/Nm3 *2: Regulatory level values are based on the most
severe value in the target facility. *3: Actual figures are the highest figure in the year for the target facility.

Location
175 Okawara, Motomachi, Yashima-cho,
Yuri-gun, Akita Prefecture
Production
EMC products, SA sensor products
Size
Land: 15,000 square meters
Premises: 7,000 square meters
Completion June 1973
Number of employees 410

Water Quality (Water Pollution Control Law)
Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

6.7

6.2–7.2(*1)

BOD

160 (120)

23.5

42

Suspended matter

200 (150)

11

17

Hexane extracts

5

ND

ND

Number of coliform groups

3000

15

30

Lead

0.1

ND

ND

Dichloromethane

0.2

ND

ND

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand *1: Minimum and maximum pH values

45

Atmosphere (Air Pollution Control Law, prefectural regulations)
Facility

Yuza TDK Corp.

Boiler (1 unit)

Fuel
Kerosane

Substances emitted(*1)

Regulatory level(*2) Actual(*3)

Sulfur oxides

0.513

Nitrogen oxides

180

58

Dust

0.3

ND

ND

*1: Units: Sulfur oxides: Nm3/h, Nitrogen oxides: ppm, Dust: g/Nm3*2: Regulatory level values are based on the most severe value in the target facility.
*3: Actual figures are the highest figure in the year for the target facility.

Location18-1 Maeda, Oaza Yuza-machi, Yuza-machi,
Akumi-gun, Yamagata Prefecture
Production
Ceramic resonators, ceramic filters
Size
Land: 22,000 square meters
Premises: 8,000 square meters
Completion February 1968
Number of employees 260

Water Quality (Water Pollution Control Law, prefectural regulations)Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

6.9

6.6–7.2(*1)

BOD

25

3.4

4.9

COD

160 (120)5

8.5

Suspended matter

60

9

12

Hexane extracts

5

ND

ND

Number of coliform groups

3000

46

62

Lead

0.1

ND

ND

Trichloroethylene

0.3

ND

ND

Tetrachloroethylene

0.1

ND

ND

Dichloromethane

0.2

ND

ND

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand • COD: Chemical Oxygen Demand*1: Minimum and maximum pH values

Atmosphere (Air Pollution Control Law, prefectural regulations)
Facility

Tsuruoka TDK Corp.

Boilers (4 units)

Fuel
Kerosene

Substances emitted(*1)

Regulatory level(*2) Actual(*3)

Sulfur oxides

1.12

Nitrogen oxides

180

73

Dust

0.3

0.02

ND

*1: Units: Sulfur oxides: Nm3/h, Nitrogen oxides: ppm, Dust: g/Nm3.
*2: Regulatory level values are based on the most severe value in the target facility.
*3: Actual figures are the highest figure in the year for the target facility.

Location
97 Aburada, Oaza Yamada, Tsuruoka City,
Yamagata Prefecture
Production
NL coils, SWRG power supply
Size
Land: 49,000 square meters
Premises: 13,000 square meters
Completion September 1968
Number of employees 590

Water Quality (Water Pollution Control Law, prefectural regulations)Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

7.3

7.0–7.5(*1)

BOD

160 (120)

9.15

23.4

COD

160 (120)

10.7

12.9

Suspended matter

200 (150)

8.45

21

Hexane extracts

5

0.78

1.3

Copper

3

0.025

0.03

Zinc

5

0.29

0.55

Soluble iron

10

0.45

0.72

Soluble manganese

10

0.18

0.29

Number of coliform groups

3000

275

1100

Cadmium

0.1

ND

ND

Cyanogen

1

ND

ND

Lead

0.1

ND

ND

Hexavalent chromium

0.5

ND

ND

Arsenic

0.1

ND

ND

Total mercury

0.005

ND

ND

1.1.1. Trichloroethane

3

ND

ND

Dichloromethane

0.2

0.064

0.096

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand • COD: Chemical Oxygen Demand*1: Minimum and maximum pH values

46Data of Environmental Burden at Major TDK Facilities

Atmosphere (Air Pollution Control Law, prefectural regulations)
Facility

Sakata TDK Corp.

Boiler (1 unit)

Fuel
Kerosene

Substances emitted(*1)

Regulatory level(*2) Actual(*3)

Sulfur oxides

0.43

Nitrogen oxides

180

62

Dust

0.3

ND

0.005

*1: Units: Sulfur oxides: Nm3/h, Nitrogen oxides: ppm, Dust: g/Nm3*2: Regulatory level values are based on the most severe value in the target facility.
*3: Actual figures are the highest figure in the year for the target facility.

Location
99-19 Meiji, Oaza Miyaumi, Sakata City,
Yamagata Prefecture
Production
Chip inductors, common mode filters
Size
Land: 17,000 square meters
Premises: 8,000 square meters
Completion September 1981
Number of employees 250

Water Quality (Water Pollution Control Law, prefectural regulations)Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

6.5

5.9–7.0(*1)

BOD

160 (120)

3.55

4.1

Suspended matter

200 (150)

3.9

6.8

Hexane extracts

5

0.7

0.8

Zinc

5

0.06

0.07

Soluble iron

10

0.095

0.11

Soluble manganese

5

0.08

0.11

Number of coliform groups

3000

360

500

Lead

0.1

ND

ND

Total mercury

0.005

ND

ND

Dichloromethane

0.2

ND

ND

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand *1: Minimum and maximum pH values

Atmosphere (Air Pollution Control Law, Pollution Control Agreement)
Facility

TDK Micro Device Corp.

Cool and hot-water generator
Kerosene(1 unit)

Boiler (1 unit)

Location644-55 Hitana, Nakago-cho,
Kitaibaraki City, Ibaraki Prefecture
Production
Multilayer chip inductors
Size
Land: 108,000 square meters
Premises: 10,000 square meters
Completion January 1993
Number of employees 60

FuelKerosene

Substances emitted(*1)

Regulatory level(*2) Actual(*3)

Sulfur oxides

5.63

Nitrogen oxides

180

59

Dust

0.3

0.001

Sulfur oxides

5.41

ND

Nitrogen oxides

180

59

Dust

0.3

0.001

ND

*1: Units: Sulfur oxides: Nm3/h. Nitrogen oxides: ppm. Dust: g/Nm3*2: Regulatory level values are based on the most severe value in the target facility.
*3: Actual figures are the highest figure in the year for the target facility.

Water Quality (Water Pollution Control Law, Pollution Control Agreement)
Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

7.4

6.5–7.9(*1)

BOD

25 (20)

3.6

19.2

COD

25 (20)

3.8

6.6

Suspended matter

40 (30)ND

21Hexane extracts

5

ND

ND

Copper

3

ND

ND

Zinc

5

ND

0.1

Soluble iron

10

ND

0.2

Soluble manganese

10

ND

ND

Fluorine

8

ND

ND

Number of coliform groups

3000

2

24

Lead

0.1

ND

ND

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand • COD: Chemical Oxygen Demand*1: Minimum and maximum pH values

47

Water Quality (Voluntary measurement)
ActualAverage

MaximumpH

7.2

7.0–7.4(*1)

BOD

7.5

10.5

COD

8.1

10.9

Suspended matter

7

7

Hexane extracts

ND

ND

Category

Toso TDK Corp.

Location
10 Midoridaira, Yokaichiba City,
Chiba Prefecture
Production
Dielectric filters, isolators, metal magnets
Size
Land: 16,000 square meters
Premises: 5,000 square meters
Completion April 1985
Number of employees 120

Regulatory level• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand • COD: Chemical Oxygen Demand*1: Minimum and maximum pH values

Water Quality (Voluntary measurement)
ActualAverage

MaximumpH

6.8

6.6–7.6(*1)

BOD

12.1

28

COD

14.8

27

Suspended matter

13.3

41

Number of coliform groups

88.8

260

Lead

ND

ND

Category

Kofu TDK Corp.

Location
1955-1 Tokoji-cho, Kofu City,
Yamanashi Prefecture
Production
Magnetic heads
Size
Land: 12,000 square meters
Premises: 5,000 square meters
Completion April 1962
Number of employees 140

Regulatory level

1.1.1. Trichloroethane

ND

ND

Trichloroethylene

ND

ND

Dichloromethane

ND

ND• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand • COD: Chemical Oxygen Demand*1: Minimum and maximum pH values

Atmosphere (Air Pollution Control Law)
FacilityMedia Technology Corp.

Boilers (3 units)

Fuel

Substances emitted(*1)

Regulatory level(*2) Actual(*3)

Sulfur oxides

1.93

Grade-A heavy oil Nitrogen oxides
Dust

0.09

180

130

0.15

0.004

*1: Units: Sulfur oxides: Nm3/h, Nitrogen oxides: ppm, Dust: g/Nm3*2: Regulatory level values are based on the most severe value in the target facility.
*3: Actual figures are the highest figure in the year for the target facility.

Location
801 Nakadate, Tamaho-cho,
Nakakoma-gun, Yamanashi Prefecture
Production
Video tapes for private use, tapes for data
back-ups and broadcasting services
Size
Land: 29,000 square meters
Premises: 11,000 square meters
Completion October 1991
Number of employees 250

48

Water Quality (Voluntary measurement)
ActualAverage

MaximumpH

7.3

6.5–8.0(*1)

BOD

126

214

Suspended matter

12

22.4

Hexane extracts

2.7

7

Category

Regulatory level• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand *1: Minimum and maximum pH values

Data of Environmental Burden at Major TDK Facilities

Atmosphere (Air Pollution Control Law)
Facility

Iida TDK Corp.

Boilers (2 units)

Fuel

Substances emitted(*1)

Regulatory level(*2) Actual(*3)

Sulfur oxides

0.8

Grade-A heavy oil Nitrogen oxides
Dust

0.03

180

87

0.3

0.005

*1: Units: Sulfur oxides: Nm3/h, Nitrogen oxides: ppm, Dust: g/Nm3*2: Regulatory level values are based on the most severe value in the target facility.
*3: Actual figures are the highest figure in the year for the target facility.

Location
7659 Myo, Matsuo, Iida City,
Nagano Prefecture
Production
ELF coils, NL wire-wound chip inductors
Size
Land: 19,000 square meters
Premises: 7,000 square meters
Completion December 1966
Number of employees 170

Water Quality (Sewage Law, city regulations)Category

Regulatory level

ActualAverage

MaximumpH

5.7–8.7

8.5

8.5–8.5(*1)

BOD

300

58

58

Suspended matter

300

44

44

Hexane extracts

30

5.1

5.1

Lead

0.1

ND

ND

Dichloromethane

0.2

ND

ND

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected.
• pH: hydrogen ion exponent • BOD: Biochemical Oxygen Demand *1: Minimum and maximum pH values49

Atmosphere
Facility

Fuel

Korea TDK Co., Ltd.
Incinerator (1 unit)

Location
670, Kasan-dong, Gumchon-ku,
Seoul, Republic of Korea
Production
Ferrite coresSize
Land: 16,000 square meters
Premises: 20,000 square meters
Completion May 1973
Number of employees 510

Waste

Substances emitted(*1)

Regulatory level(*2) Actual(*3)

Sulfur oxides

300

Nitrogen oxides

200

68.32

Dust

0.1

0.031

Carbon monoxide

600123.89Hydrochloric acid

50

1.56

Chlorine

60

0.32

56.77

*1: Units: Sulfur oxides: Nm3/h, Nitrogen oxides: ppm, Dust: g/Nm3, Carbon monoxide, Hydrochloric acid, Chlorine: ppm.
*2: Regulatory level values are based on the most severe value in the target facility.
*3: Actual figures are the highest figure in the year for the target facility

Water Quality
Category

Regulatory level

ActualAverage

MaximumpH

5.8–8.6

7.0

6.5–7.7(*1)

COD

130

6.75

20.79

Suspended matter

120

13.3

19.4

Hexane extracts

5

1.4

2.4

Anionic surfactant

5

0.1

0.13

• Unit: mg per liter, apart from pH • ND means below the volume that can be detected. • pH: hydrogen ion exponent• COD: Chemical Oxygen Demand *1: Minimum and maximum pH values

Water Quality

TDK (Thailand) Co., Ltd.
Rojana Plant

Location
Rojana Industrial Park 1/62 Moo 5.
Rojana Road, Tambol Kanham, Amphur
Uthai, Ayutthaya, 13210, Thailand
Production
Audio tapes, metal magnets, chip capacitors
Size
Land: 104,000 square meters
Premises: 16,000 square meters
Completion November 1991
Number of employees 930

Category

Regulatory level

ActualAveragepH

5.0–9.0

7.3

7.1–7.5(*1)

COD

1250

85.45

119.7

BOD

1000

31.5

55.5

Soluble matter

2000

787

918

Suspended matter

200

9.8

14.6

Phenol substances

1

0.08

0.16

Zinc

5

0.102

0.1215Chromium

0.5

ND

ND

Arsenic

0.25

ND

ND

Copper

1

0.013

0.016

Mercury

0.005

ND

ND

Cadmium

0.03

ND

ND

Barium1

ND

ND

Selenium

0.02

ND

ND

Lead

0.2

0.02420.0374

Nickel

0.2

ND

ND

Manganese

5

ND

ND

Silver

1

ND

ND

Stannum

1

0.275

0.31

Aluminum

5

ND

ND

Maximum• Unit: mg per liter, apart from pH • ND means below the volume that can be detected. • pH: hydrogen ion exponent• BOD: Biochemical Oxygen Demand • COD: Chemical Oxygen Demand *1: Minimum and maximum pH values

50Data of Environmental Burden at Major TDK Facilities

Water Quality

TDK Electronics Corporation
California Plant

Location
Suite 100, 17871 Von Karman Avenue
Irvine, CA 92614 U.S.A.
Production
Audio and video tapes, floppy disks,
inductors
Size
Land: 133,000 square meters
Premises: 48,000 square meters
Completion September 1965
Number of employees 320

Category

Regulatory level

ActualAverage

Maximum

Cadmium

0.8

ND

ND

Chromium

2.5

0.162

0.162

Copper

2

0.02

0.02

Lead

0.6

0.01

0.01

Mercury

0.01

ND

ND

Nickel

2

0.011

0.011

Silver

0.5

ND

ND

Zinc

5

2.42

2.42

Fluoride

3

ND

ND

Phenol1

ND

ND* Unit: mg per liter, apart from pH * ND means below the volume that can be detected.

51

Contact
Safety & Environment Office, TDK Corporation
2-15-7 Higashiowada, Ichikawa City, Chiba Prefecture 272-8558, Japan
TEL.81-47-378-9467 FAX.81-47-378-9492

The next TDK's Environmental Report will be issued in September 2001.