Sustainability

CSR Report Supplemental Materials: Air Pollutant Measurement Results (Japan)

Results of Air Pollutant measurements (by Site, FY2015)

Site Facilities Item Regulation requirement NSK control value Actual value
NSK Ltd. Fujisawa Plant / Fujisawa Technology Center Boiler NOx (ppm) 150 135 21
Soot and Dust (g/㎥N) 0.2 0.05 ND
SOx (K value) 11.5 1.5 ND
Metal furnace NOx (ppm) 180 135 38
Soot and Dust (g/㎥N) 0.1 0.05 0.02
SOx (K value) 11.5 1.5 ND
Ohtsu Plant Boiler NOx (ppm) 150 135 30.6
Soot and Dust (g/㎥N) 0.1 0.05 0.001
SOx (K value) 8.76 1.5 ND
Gas engine NOx (ppm) 600 500 297
Soot and Dust (g/㎥N) 0.05 0.03 ND
SOx (K value) 8.76 1.5 0.008
Ishibe Plant Boiler NOx (ppm) 150 135 75
Soot and Dust (g/㎥N) 0.1 0.05 ND
SOx (K value) 8.76 1.5 ND
Gas engine NOx (ppm) 600 500 320
Soot and Dust (g/㎥N) 0.05 0.03 ND
SOx (K value) 8.76 1.5 ND
Saitama Plant / Saitama Precision Machinery and Parts Plant Boiler NOx (ppm) 150 135 99
Soot and Dust (g/㎥N) 0.1 0.05 ND
SOx (K value) 17.5 1.5 0.02
Metal furnace NOx (ppm) 180 135 130
Soot and Dust (g/㎥N) 0.2 0.05 0.02
SOx (K value) 17.5 1.5 0.02
Diesel engine NOx (ppm) 950 900 800
Soot and Dust (g/㎥N) 0.1 0.09 0.01
SOx (K value) 17.5 1.5 0.21
Fukushima Plant Metal furnace NOx (ppm) 144 135 5
Soot and Dust (g/㎥N) 0.3 0.05 0.005
SOx (K value) 10 1.5 0.13
Takasaki Plant Boiler NOx (ppm) 150 135 61
Soot and Dust (g/㎥N) 0.1 0.05 ND
SOx (K value) 6 1.5 ND
Diesel engine NOx (ppm) 950 900 850
Soot and Dust (g/㎥N) 0.1 0.09 0.02
SOx (K value) 6 1.5 0.01
Haruna Plant Boiler NOx (ppm) 150 135 120
Soot and Dust (g/㎥N) 0.1 0.05 ND
SOx (K value) 8 1.5 ND
Diesel engine NOx (ppm) 950 900 640
Soot and Dust (g/㎥N) 0.1 0.09 0.03
SOx (K value) 8 1.5 0.82
Maebashi Precision Machinery Plant / Steering Technology Center Boiler NOx (ppm) 180 135 79
Soot and Dust (g/㎥N) 0.3 0.05 0.001
SOx (K value) 8 1.5 ND
Diesel engine NOx (ppm) 950 900 760
Soot and Dust (g/㎥N) 0.1 0.09 0.009
SOx (K value) 8 1.5 0.54
NSK Steering Systems Co., Ltd. Soja Plant (Soja) Boiler NOx (ppm) 150 135 31
Soot and Dust (g/㎥N) 0.1 0.05 ND
SOx (K value) 8 1.5 0.05
Soja Plant (Akagi) Boiler NOx (ppm) 180 135 77
Soot and Dust (g/㎥N) 0.3 0.05 0.01
SOx (K value) 8 1.5 0.05
NSK Kyushu Co., Ltd. Boiler NOx (ppm) 180 135 65
Soot and Dust (g/㎥N) 0.3 0.05 0.01
SOx (㎥N/h) 17.5 1.5 1.45
NSK-Warner K.K. Boiler NOx (ppm) 150 135 61
Soot and Dust (g/㎥N) 0.1 0.05 ND
SOx (K value) 17.5 1.5 ND
Shinwa Seiko Co., Ltd. Shin-asahi Plant Boiler NOx (ppm) 180 135 2
Soot and Dust (g/㎥N) 0.3 0.05 0.01
SOx (K value) 17.5 1.5 0.2
Kuribayashi Seisakusho Co., Ltd. Honsha Plant Boiler NOx (ppm) 180 135 91
Soot and Dust (g/㎥N) 0.3 0.05 0.008
SOx (K value) 17.5 1.5 0.028
NSK Toyama Co., Ltd. Metal furnace NOx (ppm) 180 135 92
Soot and Dust (g/㎥N) 0.2 0.05 0.01
SOx (K value) 2.34 1.5 ND

Actual value for NOx, soot and dust, and SOx are the maximum values recorded from among applicable facilities.

ND: Not detected

*:No applicable air pollutant emitting facilities: NSK Ltd., Kirihara Branch, NSK Micro Precision Co., Ltd., Fujisawa Plant and Matsukawa Plant, Inoue Jikuuke Kogyo Co., Ltd., Chitose Sangyo Co., Ltd., Asahi Seiki Co., Ltd., Shinwa Seiko Co., Ltd. Kutsuki plant, NSK Machinery Co., Ltd., Amatsuji Steel Ball Mfg. Co., Ltd., and AKS East Japan Co., Ltd.

Glossary

NOx
Occurs as nitrogen monoxide and nitrogen dioxide, when burning fuel in boilers.
Soot and Dust
Particles generated during the combustion of fuel.
SOx
Sulfur oxides, particularly sulfur dioxide and sulfur trioxide, produced when fuels containing sulfur are burned in boilers and other equipmen
K value:
A coefficient used to calculate the allowable amount of SOx emissions according to smokestack height for each facility, based on the Air Pollution Control Law. Specified K values have been established for each region. Regions with higher concentrations of plant facilities have more stringent regulations and lower K values.