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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-sized and large hydraulic excavators, mobile crushers / recyclers / tub grinders (crushers, soil stabilizers, tub grinders, etc.)
Site/Green Landscape (1,000 m2) 591/88
Number of employees 2,201
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 2014.

Major Performance

Environmental impact Energy consumption
Item Actual value Item Actual consumption Converted to calorie equivalents (GJ)
Total CO2 emissions 27,393 t-CO2 Electricity 49,604 MWh 481,699
NOx total amount 1,231 kg Heavy oil A 133 kl 5,192
SOx total amount 201 kg Kerosene 12 kl 439
Total emissions of waste 1,467 t Light oil 402 kl 15,364
Amount recycled 1,448 t Town gas 3,318 Nkm3 139,042
Recycling rate 99.8 % LPG 67 t 3,377
BOD emissions 576 kg Other   1,390
COD emissions 978 kg Total   646,504
Wastewater 161,513 m3
Output of in-house power generation 2,200 MWh
* 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 28
  ppm Metal furnace 180 48
  ppm Paint drying furnace 230 5.9
  ppm Gas engine 600 38
Sulfur oxides (SOx) - Regulation of total emissions (m3N/h)    
Soot and dust g/m3N Boiler 0.05 0.014
  g/m3N Metal furnace 0.1 0.020
  g/m3N Paint drying furnace 0.1 0.015
* 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 7.6 7.3 7.5
BOD (Biochemical oxygen demand) 160 mg/l 25 6.2 0.9 3.6
COD (Chemical Oxygen Demand) 160 mg/l 25 10.0 3.5 6.1
Suspended solids (SS) 200 mg/l 90 8.0 ND 2.5
Mineral oils 5 mg/l 3 ND ND ND
Copper 3 mg/l 5 ND ND ND
Zinc 2 mg/l 2 0.05 ND 0.05
Nitrogen 120 mg/l 120 19.0 2.1 9.7
Phosphorus 16 mg/l 16 2.2 0.1 0.9
Cadmium 0.1 mg/l 0.01 ND ND ND
Lead 0.1 mg/l 0.05 ND ND ND
Chromium (VI) 0.5 mg/l 0.05 ND ND ND
Trichloroethylene 0.3 mg/l 0.03 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 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.