Activities for Managing Chemical Substances

We manage chemical substances with the aim of implementing prevention of environmental pollution.

Complete Abolition of Organochlorine Chemicals

Complete abolition of substances subject to the Soil Contamination Countermeasures Law

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.

Total abolition of ozone depleting substances

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.

Emission Control of VOC (Volatile Organic Compounds)

VOC emissions

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.

Emissions and Transfer of PRTR Substances

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.

Emissions and transfer volume of Class I Designated Chemical Substances under the PRTR Law in FY2012 (Substances subject to reporting)


Substance number Substance designation Emissions + transferred amount
53 Ethylbenzene 153,167
80 Xylene 396,825
240 Styrene 1,394
296 1, 2, 4-trimethylbenzene 2,319
297 1, 3, 5-trimethylbenzene 6,947
300 Toluene 155,622
349 Phenol 791
374 Hydrogen fluoride and its water-soluble salts 24,284
384 1-bromopropane 7,292
392 Normal hexane 1,128
405 Boron and its compounds 1,900
412 Manganese and its compounds 8,816

* Emissions + transferred amount is the total amount for Sumitomo Heavy Industries and all Group companies

Emissions and transfers of PRTR substances

Management of PCB (Polychlorinated Biphenyl) and Total Abolition of Equipment Containing PCB

Storing transformers containing
minute amount of PCB
(Okayama Works)

We have completed early registration of all equipment with high concentrations of PCB with the processing company, Japan Environmental Safety Corporation, and we have undertaken a systematic course of detoxification based on the Law Concerning Special Measures Against PCB Waste. Until FY2011, this material was processed at the Tanashi Works, Okayama Works, Nihon Spindle Mfg. Co., Ltd., and Izumi Food Machinery Co., Ltd.
The survey of equipment with low concentrations of PCBs was furthered and updated in FY2011. Study is underway regarding treatment of items presently being stored. In FY2011, we also undertook a major upgrade with regard to lighting equipment with stabilizers and transformers containing PCBs.