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Komatsu's Environmental and Social Activities Data


Site Data (Japan)  Koriyama Plant

Overview

Year of Establishment 1994
Location Koriyama, Fukushima Prefecture
Main Products Hydraulic cylinders, swivel joints, gear pumps
Site/Green Landscape (1,000 m2) 297/153
Number of employees 425
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 2016.

Major Performance

Environmental impact Energy consumption
Item Actual value Item Actual consumption Converted to calorie equivalents (GJ)
Total CO2 emissions 7,752 t-CO2 Electricity 8,807 MWh 85,124
NOx total amount 41,322 kg Heavy oil A 1,084 kl 42,384
SOx total amount 1,696 kg Kerosene 0 kl 0
Total emissions of waste 790 t Light oil 6 kl 232
Amount recycled 790 t Town gas 0 Nkm3 0
Recycling rate 100 % LPG 469 t 23,534
BOD emissions 53 kg Other 5 156
COD emissions 152 kg Total   151,430
Wastewater 11,851 m3
Output of in-house power generation 4,386 MWh
   
Water consumption
Item Actual value
Groundwater 0 m3
Industrial water 2,736 m3
Supply water 19,140 m3
Total 21,876 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

Air
Item Unit Facility Regulated value Actual value
Nitrogen oxides (NOx) ppm Cogeneration engine 760 652
         
         
         
Sulfur oxides (SOx) - K-value regulation 11.5 0.76
Soot and dust g/m3N Cogeneration engine 0.1 0.036
         
         
* 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 7.4 6.9 7.2
BOD (Biochemical oxygen demand) 160 mg/l 40 10 1.1 4.5
COD (Chemical Oxygen Demand) 160 mg/l 40 19 5.9 12.8
Suspended solids (SS) 200 mg/l 70 6.6 2.5 4.0
Mineral oils 5 mg/l 1 0.7 ND 0.5
Copper 3 mg/l 2 ND ND -
Zinc 2 mg/l 2 0.05 0.05 -
Nitrogen 120 mg/l 120 8.2 8.2 -
Phosphorus 16 mg/l 16 2.4 2.4 -
Cadmium 0.03 mg/l 0.03 ND ND -
Lead 0.1 mg/l 0.1 ND ND ND
Chromium (VI) 0.5 mg/l 0.2 ND ND ND
Trichloroethylene 0.1 mg/l 0.1 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, 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.