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Komatsu's Environmental and Social Activities Data


Site Data (Japan)  Ibaraki Plant

Overview

Year of Establishment 2007
Location Hitachinaka, Ibaraki Prefecture
Main Products Large wheel loaders, dump trucks
Site/Green Landscape (1,000 m2) 350/71
Number of employees 862
Date of ISO14001 certification acquisition May 2007
* 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 3,402 t-CO2 Electricity 6,238 MWh 60,860
NOx total amount 606 kg Heavy oil A 0 kl 0
SOx total amount 2 kg Kerosene 2 kl 57
Total emissions of waste 321 t Light oil 353 kl 13,495
Amount recycled 321 t Town gas 0 Nkm3 0
Recycling rate 100 % LPG 26 t 1,302
BOD emissions 2,831 kg Other   0
COD emissions - kg Total   75,713
Wastewater 23,262 m3
Output of in-house power generation 641 MWh
   
Water consumption
Item Actual value
Groundwater 0 m3
Industrial water 0 m3
Supply water 23,212 m3
Total 23,212 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 Diesel engine 100 63*
         
         
         
Sulfur oxides (SOx) - K-value regulation 9 0.05
Soot and dust g/m3N Diesel engine 0.1 0.014
         
         
* 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
(Sewage Water Law)
Actual value
Maximum Minimum Average
pH 5.8-8.6 5-9 8.9 7.8 8.5
BOD (Biochemical oxygen demand) 160 mg/l 600 210 42 122
COD (Chemical Oxygen Demand) 160 mg/l - - - -
Suspended solids (SS) 200 mg/l 600 440 24 187
Mineral oils 5 mg/l 5 ND ND ND
Copper 3 mg/l - - - -
Zinc 2 mg/l - - - -
Nitrogen 120 mg/l - - - -
Phosphorus 16 mg/l - - - -
Cadmium 0.03 mg/l - - - -
Lead 0.1 mg/l - - - -
Chromium (VI) 0.5 mg/l - - - -
Trichloroethylene 0.1 mg/l - - - -
Tetrachloroethylene 0.1 mg/l - - - -
Dichloromethane 0.2 mg/l - - - -
1,1,1-trichloroethane 3 mg/l - - - -
* 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.