The Tokyo Gas Group strives to create a zero-waste 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 (steel, cast-iron, and polyethylene pipes) at every stage of our business activities.
■Industrial Waste (FY2018)
|Item||Generation||Amount recycled||Landfill||Recycling rate||Landfill rate|
|Tokyo Gas Co., Ltd.||4,767||3,607||575||76||12|
■General Waste (FY2018)
|Item||Generation||Amount recycled||Recycling rate|
|Tokyo Gas Co., Ltd.||998||811||81|
■Copy Paper (FY2018)
|Tokyo Gas Co., Ltd.||53|
Working to Reduce Waste
Underground construction works of gas pipelines entails excavating roads so, pit sand is used to refill gaps. Reducing the use of pit sand suppresses environmental destruction and lowers CO2 emissions generated by the vehicles transporting sand to construction sites. The Tokyo Gas Group strives to reduce the volume of excavated soil and the use of pit sand by laying pipes in shallow, narrow trenches and has adopted the non-open-cut construction method.
To reduce the use of pit sand further, we are pursuing 3R efforts such as increasing the use of excavated soil (reuse), improved soil, recycled road surface materials (recycle), and Eco-balls (reduce, reuse) for refill work.
“Eco-ball”, an innovative temporary backfiller
Gas pipeline installation work using Eco-balls
Initiatives for Reuse
Disassembled gas meter
Recycling Initiatives*1, which are recycled into raw materials for plastics, and for steel and cast-iron pipes that are reused as materials for metals. We also materially recycle PE pipes in-house by reprocessing them into such items as gas meter instruction tags that show how to restart gas delivery after shut-off in the event of an emergency such as big earthquakes.
■Recycling Rate for Used Gas Pipes
|Gas pipes||PE pipes||100％||100％||100％||100％||100％|
|Steel and cast-iron pipes||100％||100％||100％||100％||100％|
■PE pipes are reborn as excellent materials
Plastics Smart: Campaign led by Japan’s Environment Ministry to promote efforts aimed at resolving the global issue of marine plastic pollution through broad collaboration and cooperation among individuals, local governments, NGOs, companies and research institutions. Tokyo Gas has registered its initiative as a Plastics Smart campaign.
■Saving & Recycling Innovative Model System (SRIMS)
The so-called “A Group”, mainly organized by Panasonic Corporation and Toshiba Corporation, collects and recycles Tokyo Gas-brand household gas air conditioners and clothes dryers. These are eligible for recycling under the Act on Recycling of Specified Kinds of Home Appliances (Home Appliance Recycling Law).
■Recycling under the Home Appliance Recycling Law (FY2019)
|Air conditioners||Clothes dryers|
|Collected at specified places||Number||11,016||6,429|
|Transported to processing plants||Number||11,034||6,439|
|Recycling||Recycled by number of units||Number||11,166||6,492|
|Recycled by weight||t||454||264|
|Recycled products by weight||t||414||235|
We have made it a rule to collect discarded containers and packaging to reduce waste at customer sites when partner companies sell and install gas appliances.
Collected containers and packaging are recycled in the Saving & Recycling Innovative Model System (SRIMS). In fiscal 2018, approximately 558 tons of corrugated cardboard and 13.6 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 repeatedly.
Cardboard boxes designed to require less cushioning
The Tokyo Gas 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. We are making our utmost efforts to reduce such waste, which is mainly construction rubble and sludge, scrap metal, and woodchips.