Tokyogasgroup csr report

Ensuring Stable Supply of Energy in Japan and Abroad

Production of City Gas

Benefits of LNG as Feedstock for City Gas

2019 marked the 50th anniversary of the introduction of LNG to Japan by Tokyo Gas in 1969. The following benefits of LNG include excellent environmental soundness and supply security.

 

About LNG
LNG is produced by cooling natural gas, which is primarily composed of methane, to its liquid state. Methane is a gas under one atmospheric pressure at 0°C and changes into a liquid when cooled to −162°C, with its cubic volume diminishing by 600 times. Using this property to transport natural gas in the form of LNG on carriers allows for the transport and use of massive volumes of natural gas in regions where it cannot be delivered via pipeline.
DFF Inc., Corporate Social Responsibility Sect, General Administration Dept., Corporate Planning Dept., Resources & Global Business Division, Energy Solution Div, Power Buisiness Dept., Pipeline Network Division, IT Division, Residential Sales Div., Fundamental Technology Dept., Energy Solution Div, Environmental Affairs Dept., Purchasing Dept. , Health Insurance & Employees' Welfare Sect., Personnel Dept., Internal Audit Dept., Audit & Supervisory Board Member's Office, Compliance Dept., Regional Development Div., Finance Dept, TGES, TOKYO GAS COMMUNICATIONS, INC.

Stable Production of City Gas and Stringent Quality Control

Stable Production of City Gas

Our four city gas production terminals mutually back up each other so that we can continue to deliver a stable supply of gas to customers, even in the event of power outages or other problems. Highly reliable power receiving systems with core facility redundancy are also in place to ensure steady production of city gas. Each terminal is equipped with highly reliable facilities, and we are enhancing our safety measures by steadily upgrading aging facilities and strengthening earthquake resistance for even greater stability in production.

 

 

 

Low Pollution
Natural gas is primarily composed of methane (CH4), which has a smaller proportion of carbon atoms in its molecule compared to oil or coal and therefore generates the least CO2 during combustion of any fossil fuel. It also releases almost no sulfur oxide emissions since sulfur and other impurities are removed during liquefaction, making it the most eco-friendly fossil fuel as well.

Comparison of Emissions during Combustion (Coal = 100)

Comparison of Emissions during Combustion (Coal = 100)
  • Source: Agency for Natural Resources and Energy, Energy White Paper 2013


 

Economic Advantages of Production

City gas using LNG as feedstock is produced by pouring seawater to vaporize LNG stored in a tank at minus 162°C and adjusting the calorific value. The process does not require large-scale manufacturing facilities, thereby keeping production costs down.

Compliance with Statutory Requirements

To ensure delivery of high-quality city gas to customers, we daily inspect calorific value, combustibility and other properties, as stipulated by law, and strive to improve quality further by conducting independent monitoring regularly while also maintaining and managing facilities though periodic maintenance and daily inspections.

Strategic Development of Production Facilities

We are strategically developing our production facilities from a long-term perspective that emphasizes economic performance, applying a comprehensive approach as we consider issues such as projected future demand for city gas. To encourage the broader adoption of natural gas, a goal under our Challenge 2020 Vision, we began commercial operations at the Hitachi LNG Terminal in March 2016 to meet expanding demand in the northern Kanto region. The Hitachi LNG Terminal has a big jetty capable of receiving large LNG carriers and a 230,000 kl aboveground LNG tank, the largest of its kind in the world. In April 2018, we began constructing a second tank, scheduled to start operating in fiscal 2020, to keep pace with the growing demand for natural gas.

Hitachi LNG Terminal
Hitachi LNG Terminal

Initiatives for Handing Down Skills

The Tokyo Gas Group actively manages knowledge by sharing and utilizing the valuable learnings, technology and skills it has acquired over many years of operating terminals in order to deepen each employee’s understanding and thereby enhance their performance and abilities. We are also systematically developing human resources to ensure that skills are smoothly transferred to each succeeding generation.
DFF Inc., Corporate Social Responsibility Sect, General Administration Dept., Corporate Planning Dept., Resources & Global Business Division, Energy Solution Div, Power Buisiness Dept., Pipeline Network Division, IT Division, Residential Sales Div., Fundamental Technology Dept., Energy Solution Div, Environmental Affairs Dept., Purchasing Dept. , Health Insurance & Employees' Welfare Sect., Personnel Dept., Internal Audit Dept., Audit & Supervisory Board Member's Office, Compliance Dept., Regional Development Div., Finance Dept, TGES, TOKYO GAS COMMUNICATIONS, INC.