The Tokyo Gas Group strives to create a recycling-based society by implementing its Guidelines for Promoting Resource Saving and Recycling and rigorously practicing the 3Rs of reduction, reuse and recycling of waste across the Group. Specifically, we seek to achieve zero waste emissions at production sites, reduce the amount of soil excavated during gas pipeline construction, reuse old gas meters and recycle used gas pipes at every stage of our business activities.
|Item||Generation||Amount recycled||Final disposal||Recycling rate||Final disposal rate|
|Construction Work*1, 2||155,510||151,997||1,469||98||1|
|Business offices, etc.*1||4,292||3,713||350||86||8|
|Tokyo Gas Co., Ltd.||5,950||4,638||981||78||16|
*1 Production plants includes data at facilities that make products, including city gas, and district heating and cooling centers as well as power plants. Construction Work includes data on construction work won by Group companies, while Offices, etc. includes data on other undertakings.
*2 Includes construction work at the sites of Group company customers.
|Item||Generation||Amount recycled||Recycling rate|
|Tokyo Gas Co., Ltd.||1,010||806||80|
|Tokyo Gas Co., Ltd.||719||680||95|
Working to Reduce Waste
Gas pipeline installation work produces excavated soil and asphalt concrete lumps. We lay pipes shallowly in narrow trenches and use the non-open-cut construction method to reduce the volume of excavated soil, re-bury excavated soil and make more use of improved soil and recycled road surface materials under our 3R efforts. When we re-excavate the same location, we use newly developed materials and construction methods, such as Eco-balls, an innovative temporary backfill. Reducing excavated soil leads to less use of mountain sand and lower CO2 emissions from transport vehicles.
Eco-ball temporary backfill
Gas pipeline installation work using Eco-balls
Initiatives for Reuse
Disassembled gas meter
Recycling Initiatives* are reprocessed into such items as gas meter tags that show how to restart them after shut-off in the event of an emergency. Steel and cast-iron pipes are 100% recycled into raw materials by electric furnace makers and other companies.
*PE pipes have been in widespread use since the Great Hanshin-Awaji Earthquake in 1995 because of their earthquake resistance and anticorrosive property.
|Gas pipes||PE pipes||100％||100％||100％||100％||100％|
|Steel and cast-iron pipes||100％||100％||100％||100％||100％|
We promote the 3Rs at customer sites by controlling waste generation through considerations at the design stage, reducing container and packaging waste, and collecting used appliances.
We have operated our own Saving & Recycling Innovative Model System (SRIMS) since August 1994 to collect waste when we deliver gas appliances, parts and piping materials to partner companies. Through this system, which allows us to reduce environmental impact while also cutting costs, we collect used gas appliances and waste that comes from replacement by customers and gas installation or home renovation work.
In fiscal 2017, we collected 8,140 tons of waste and recycled 7,693 tons.
|Air conditioners||Clothes dryers|
|Collected at specified places||Number||12,115||6,138|
|Transported to processing plants||Number||12,104||6,152|
|Recycling||Recycled by number of units||Number||12,081||6,030|
|Recycled by weight||t||498||244|
|Recycled products by weight||t||450||215|
We make it a rule to collect discarded containers and packaging when partner companies sell and install gas appliances to reduce waste at customer sites.
Collected containers and packaging are recycled in the Saving & Recycling Innovative Model System (SRIMS). In fiscal 2017, approximately 575 tons of corrugated cardboard and 15 tons of polystyrene foam were recycled. In addition, we work to reduce the quantity of containers and packaging for gas appliances. These efforts include reducing cushioning through the redesigning of cardboard packaging, cutting back on the use of cardboard through shrink wrapping in plastic film, and adopting returnable packaging, in which packaging materials are collected and reused.
Cardboard boxes designed to require less cushioning
The Group deals with waste from gas equipment installation work under direct contracts with gas utilities, gas pipe work at customer sites, installation of air-conditioning, heating and hot water systems, and home renovation work. This waste is mainly construction rubble and sludge, scrap metal and woodchips.