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Komatsu's Environmental and Social Activities Data

Site Data (Japan)  Osaka Plant


Year of Establishment 1952
Location Hirakata, Osaka Prefecture
Main Products Large bulldozers, medium-and large-sized hydraulic excavators, mobile crushers / recyclers / tub grinders (crushers, soil stabilizers, tub grinders, etc.)
Site/Green Landscape (1,000 m2) 575/80
Number of employees 2,614
Date of ISO14001 certification acquisition July 1997
* The number of employees includes those working for Komatsu affiliates on the premises.
* The number of employees as of the the end of March 2016.

Major Performance

Environmental impact Energy consumption
Item Actual value Item Actual consumption Converted to calorie equivalents (GJ)
Total CO2 emissions 22,509 t-CO2 Electricity 38,025 MWh 369,263
NOx total amount 1,685 kg Heavy oil A 52 kl 2,029
SOx total amount 0 kg Kerosene 8 kl 296
Total emissions of waste 1,077 t Light oil 430 kl 16,439
Amount recycled 1,075 t Town gas 3,234 Nkm3 135,519
Recycling rate 99.9 % LPG 34 t 1,719
BOD emissions 459 kg Other   1,153
COD emissions 1,196 kg Total   526,417
Wastewater 181,011 m3
Output of in-house power generation 4,800 MWh
Water consumption
Item Actual value
Groundwater 21,934 m3
Industrial water 0 m3
Supply water 94,942 m3
Total 116,876 m3
* Refer to the Data on Environmental Impact Resulting from Business Activities for details on the methods used to calculate amounts.
* Total emissions of waste are expressed as a composite of the amount recycled (excluding valuables) and the amount disposed.
* Recycling rate is calculated by dividing the amount recycled (including valuables) by the amount generated (including valuables).
* Total emissions of BOD and COD are calculated by multiplying the average concentration by the amount of wastewater.

* The heat energy conversion factor is calculated in keeping with Greenhouse Gas Emission Calculation - Reporting Manual, which is based on the act on Promotion of Global Warming Countermeasures.

Compliance Conditions to Major Regulations

Item Unit Facility Regulated value Actual value
Nitrogen oxides (NOx) ppm Boiler 150 23
  ppm Metal furnace 180 56
  ppm Paint drying furnace 230 13
  ppm Gas engine 600 21
Sulfur oxides (SOx) -    
Soot and dust g/m3N Boiler 0.05 0.002
  g/m3N Metal furnace 0.1 0.024
  g/m3N Paint drying furnace 0.1 0.005
* Regulated values are in accordance with the Air Pollution Control Law and local regulations.
Item Regulated value according to the Water Pollution Control Law Regulated value Actual value
Maximum Minimum Average
pH 5.8-8.6 5.8-8.6 7.5 7 7.2
BOD (Biochemical oxygen demand) 160 mg/l 35 11 ND 2.5
COD (Chemical Oxygen Demand) 160 mg/l 35 11 3.6 6.6
Suspended solids (SS) 200 mg/l 70 7 ND 2.4
Mineral oils 5 mg/l 5 ND ND ND
Copper 3 mg/l 3 ND ND ND
Zinc 2 mg/l 2 ND ND ND
Nitrogen 120 mg/l 120 37 5.4 17.9
Phosphorus 16 mg/l 16 0.16 0.02 0.07
Cadmium 0.03 mg/l 0.003 ND ND ND
Lead 0.1 mg/l 0.01 ND ND ND
Chromium (VI) 0.5 mg/l 0.05 ND ND ND
Trichloroethylene 0.1 mg/l 0.01 ND ND ND
Tetrachloroethylene 0.1 mg/l 0.01 ND ND ND
Dichloromethane 0.2 mg/l 0.02 ND ND ND
1,1,1-trichloroethane 3 mg/l 1 ND ND ND
* Regulated values are in accordance with the Water Pollution Control Law, Sewerage Law and local regulations.
* ND ("not detected") indicates a value below the lower limit of detection.
* ND is considered to be the lower limit of detection when calculating the average.
* Other items are confirmed to be below the regulated value.
* Data for the Osaka Plant include data for the Rokko Plant.