We manage chemical substances with the aim of implementing prevention of environmental pollution.
In FY2011, we completed eliminating any use of dichloromethane, tetrachloroethylene and trichloroethylene, which are organochemical substances subject to the Soil Contamination Countermeasures Law. We maintained this total elimination of use in FY2012.
We totally eliminated use of the ozone-depleting substance HCFC-225 in fiscal year 2008, and that of HCFC-141b in fiscal year 2010. We maintained the total elimination of such use in fiscal year 2012.
Toluene, xylene and ethylbenzene in paint solvents account for over 90% of the VOC we use. Our goal is to reduce emissions of these chemicals by at least 33% by FY2013 compared with the level in FY2006.
The amount of coating we used in shipbuilding during fiscal year 2012 diminished, and further reductions were achieved by the operation of solvent collection and removal equipment at our large-scale paint facilities that are subject to legal controls. Promotion of these and other reduction measures yielded a 46% reduction relative to fiscal year 2006. This was also a 37% reduction in terms of the basic sales unit. Measures to control VOC emissions in FY2013 will continue from FY2012 through such steps as the operation of solvent collection and removal equipment, the expanded use of powder paint, and the adoption of low-solvent paints to control emissions.
More than 90% of PRTR substances are paint solvents (toluene, xylene, ethylbenzene). In FY2012, we reduced these substances by 42% of the level in FY2006. This also represents a 34% reduction in terms of the basic sales unit. We will continue to expand the use of lowsolvent paint while ensuring that we maintain the quality of our products. We will also install and expand solvent collection and removal equipment to reduce the emission and transfer of PRTR substances.
|Substance number||Substance designation||Emissions + transferred amount|
|296||1, 2, 4-trimethylbenzene||2,319|
|297||1, 3, 5-trimethylbenzene||6,947|
|374||Hydrogen fluoride and its water-soluble salts||24,284|
|405||Boron and its compounds||1,900|
|412||Manganese and its compounds||8,816|