Corporate Social Responsibility (CSR) / Environmental and Social Report 2015

Companywide Environmental Targets

In fiscal year 1994, we laid out medium- to long-term initiatives with targets to be met by fiscal year 2011. In fiscal year 2012, we established new medium- to long-term targets and identified the prevention of global warming as our single most important basic theme. In fiscal year 2015, we promoted a broad range of initiatives in line with this and two other key themes, as summarized below.

Environmental Targets and Progress as of Fiscal Year 2015




Progress as of fiscal year 2015 Relevant companies/
Prevention of global warming Reduce energy consumption at gas production facilities Reduction in energy consumption per unit Down 1.2%
(From fiscal year 2006)
Gas production facilities belonging to and gas production companies managed by Taiyo Nippon Sanso
Reduce energy consumption at offices Reduction in absolute power consumption
(Average annual reduction in excess of 1% over the medium to long term)
Down 2.8%
(Average annual reduction from fiscal year 2011 through fiscal year 2015)
All Taiyo Nippon Sanso sites (excluding production facilities)
Improve transport efficiency of tanker trucks Reduction in fuel consumption per unit
(volume of products transported)
Down 30.9%
(From fiscal year 1991)
Group and subcontracted logistics companies

Environmental contribution-oriented development themes

Pursue environmental contribution-oriented development themes Targets set for individual development themes All targets for individual development themes attained Relevant departments
Greater sales of environment-friendly products Bolster efforts to sell environment-friendly products Targets set for individual products

Most targets for individual products attained

Relevant departments

Overall Environmental Impact

We quantify the overall impact imposed by our operating activities on the environment and implement various initiatives aimed at contributing to environmental preservation.

Balance of Materials Input/Output in Fiscal Year 2015 (Taiyo Nippon Sanso Group)

Balance of Materials Input/Output in Fiscal Year 2015 (Taiyo Nippon Sanso Group)
1.   Scope of data gathered: Taiyo Nippon Sanso Corporation, Taiyo Nippon Sanso Group logistics companies, principal subcontracted logistics companies and other subcontracted companies
2.   Emissions of CO2 are calculated in line with laws aimed at helping to prevent global warming. Emissions due to the use of electrical power are after adjustment by relevant electric power utilities to reflect the impact of CO2 emissions credits.

Reducing the Environmental Impact of Our Products

NeoKelvin-Turbo Neon Refrigerator for Superconducting Power Equipment

Superconducting power equipment is expected to play a key role in enhancing the energy efficiency of electric power transmission. With research toward commercialization progressing, the need for refrigerators suitable for cooling such equipment is increasing.

The operational temperature for refrigerators for superconducting power equipment is in the area of -200º C, requiring a cooling capacity of 2-10 kW. However, conventional compact cryocoolers offer a maximum cooling capacity of 1 kW. Such units also contain rubbing parts, necessitating frequent maintenance. Our 2 kW NeoKelvin-Turbo, a groundbreaking refrigerator developed for this application, uses neon gas as a refrigerant and employs magnetic bearings, thereby achieving superior cooling capacity and essentially eliminating the need for maintenance.

The NeoKelvin-Turbo also uses the Turbo-Brayton Cycle, another factor that greatly reduces maintenance requirements. The basic Brayton cycle generates cooling power through four processes: adiabatic compression, constant-pressure heating, adiabatic expansion and constant-pressure cooling. In the Turbo-Brayton cycle, the first and third processes are conducted within, respectively, a turbo-compressor and turbo-expander. Electromagnetic force is used to levitate the device shaft, eliminating mechanical contact between the shaft and the bearing surface, thus precluding the need for maintenance. The efficiency and reliability of the devices are enhanced by the use of neon gas, which has a heavier molecular weight than helium gas, as the NeoKelvin-Turbo’s refrigerant.

NeoKelvin-Turbo Neon Refrigerator for Superconducting Power Equipment

Hydro Shuttle® Package-Type Hydrogen Refueling Station

The Hydro Shuttle® package-type hydrogen refueling station integrates the four major components of a hydrogen refueling station-dispenser, pre-cooler, hydrogen compressor and storage-into a single unit. These compact (7 m × 2 m × 2.6 m) units can be used not only as permanent stations, but also as truck-mounted mobile stations. The package format significantly reduces cost of installation, while the simplification of components means the cost of fabrication is only half that of conventional permanent stations.

Because it can be used as a mobile station, a single Hydro Shuttle® offers promise for multiple applications, including on-site stations equipped with hydrogen production facilities, offsite stations that supply hydrogen produced at facilities elsewhere and travelling stations that transport hydrogen from one location to another.

VOC recovery system

Ultralarge-Scale Air Separation Unit

Our most advanced ultralarge-scale air separation unit delivers outstanding energy efficiency, consuming 15% less energy per unit of production than its predecessor. This accomplishment reflected the following key improvements:

  • An increase in the size of the unit and of the air compressor therein, which bolstered operating efficiency;
  • A reduction in air compressor power requirements achieved through the use of a low pressure-loss packed column; and
  • A reduction in air compressor power requirements attributable to the use of a downflow condenser reboiler.
Ultralarge-scale air separation unit

Environmental Accounting

We commenced the full-scale application of environmental accounting in fiscal year 2002. In fiscal year 2003, we began measuring investments in and costs for environmental initiatives with the aim of ensuring the efficiency thereof. Our environmental accounting system is based on Environmental Accounting Guidelines 2005, published by Japan’s Ministry of the Environment.

Scope of Environmental Accounting

Periods covered:
Fiscal year 2014 (April 1, 2013-March 31, 2014)
Fiscal year 2015 (April 1, 2014-March 31, 2015)

Scope of calculations:

All Taiyo Nippon Sanso sites in Japan, four domestic affiliates (Japan Fine Products Co., Ltd.; Taiyo Nippon Sanso Engineering Corporation; Nissan Transport Corporation and Thermos K.K.) and gas production companies whose operations are managed by Taiyo Nippon Sanso

Calculation of economic benefits of environmental conservation initiatives:

  • “Profit” is profit from the sale of recycled waste from business activities with monetary value.
  • “Reduction in expenses” is calculated by comparing the reduction in payments for electric power achieved through energy-saving initiatives, adjusted for production volume as an indicator of business activities, with that of the previous fiscal year.

Cost of Environmental Conservation

Millions of yen

Category Principal initiatives Fiscal year 2014 Fiscal year 2015
Investment Expenses Investment Expenses

Pollution prevention costs

Installation and maintenance of abatement systems; maintenance of purification tanks; purchase of tanker trucks ¥  71 ¥133 ¥116 ¥141
Global environmental protection costs Introduction and maintenance of low-emission vehicles; installation of load indicators on tanker trucks 2,443 194 14 184
Resource recycling costs Waste disposal/recycling; recovery/disposal of used absorbent agents from customers 0 67 0 68
Upstream/downstream costs Green procurement 0 27 0 25
Administration costs Expenses involved in environmental management system administration 0 114 0 80
R&D costs R&D for environment-friendly products, others 35 354 62 355
Community activity costs Environmental protection; beautification; landscape and other improvements; clean-up of areas surrounding sites 0 9 0 9

Environmental remediation costs


0 0 0 0


¥2,549 ¥898 ¥192 ¥862

Economic Benefits of Environmental Conservation

Millions of yen

Benefits Fiscal year 2014 Fiscal year 2015


Profit attributable to the recycling of waste from principal business activities ¥12 ¥11

Reduction in expenses

Reduction in energy expenses achieved through energy conservation initiatives

12 6


¥24 ¥17