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Komatsu's Environmental and Social Activities Data


Site Data (Japan)  Koriyama Plant

Overview

Year of Establishment 1995
Location Koriyama, Fukushima Prefecture
Main Products Hydraulic cylinders, swivel joints, gear pumps
Site/Green Landscape (1,000 m2) 297/123
Number of employees 443
Date of ISO14001 certification acquisition July 2002
* The number of employees includes those working for Komatsu affiliates on the premises.
* The number of employees as of 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 9,278 t-CO2 Electricity 9,334 MWh 90,230
NOx total amount 43,046 kg Heavy oil A 1,482 kl 57,946
SOx total amount 1,953 kg Kerosene 0 kl 0
Total emissions of waste 991 t Light oil 0 kl 0
Amount recycled 991 t Town gas 0 Nkm3 0
Recycling rate 100 % LPG 559 t 28,079
BOD emissions 76 kg Other   0
COD emissions 166 kg Total   176,256
Wastewater 14,852 m3
Output of in-house power generation 5,759 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

Air
Item Unit Facility Regulated value Actual value
Nitrogen oxides (NOx) ppm Cogeneration engine 760 750
         
         
         
Sulfur oxides (SOx) - K-value regulation 11.5 0.46
Soot and dust g/m3N Baking (electric) furnace 0.2 Less than 0.003
  g/m3N Cogeneration engine 0.2 0.054
         
* Regulated values are in accordance with the Air Pollution Control Law and local regulations.
Wastewater
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 6.6 7.1
BOD (Biochemical oxygen demand) 160 mg/l 40 18.0 ND 5.1
COD (Chemical Oxygen Demand) 160 mg/l 40 18.0 3.1 11.2
Suspended solids (SS) 200 mg/l 70 4.9 1.0 2.7
Mineral oils 5 mg/l 5 ND ND ND
Copper 3 mg/l 3 ND ND -
Zinc 2 mg/l 2 ND ND -
Nitrogen 120 mg/l 120 18.0 18.0 -
Phosphorus 16 mg/l 16 4.4 4.4 -
Cadmium 0.1 mg/l 0.1 ND ND -
Lead 0.1 mg/l 0.1 ND ND ND
Chromium (VI) 0.5 mg/l 0.1 ND ND ND
Trichloroethylene 0.3 mg/l 0.3 ND ND -
Tetrachloroethylene 0.1 mg/l 0.1 ND ND -
Dichloromethane 0.2 mg/l 0.2 ND ND -
1,1,1-trichloroethane 3 mg/l 3 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.