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CORPORATE SOCIAL RESPONSIBILITY

Cost of Environmental Technologies

In fiscal 2017, the INPEX Group continued implementing a range of measures such as reduction of VOC and GHG emissions to reduce its environmental impact.

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Environmental Investments in Fiscal 2017 —Implementation and Effects
(April 2017 to March 2018)
Objective Investment Item Investment Amount
(Thousand Yen)
Environmental
Benefit
Quantitative Evaluation of
Investment Effect or
Reduction of Environmental
Impact (Physical Unit)
Capital
Investment
Operating
Expense
Global warming
prevention
(includes cost
of energy
conservation
measures)
Koshijihara Power plant — Cleaned gas turbine compressors - 304 Performed regular (monthly) cleaning, since output increases after cleaning Gas turbine output increased by approx. 1,200 kW compared to before cleaning Reduction effect: 31.2 kL/month / 374 kL/year (crude oil equivalent)
Chiba Field Production Well — Changed submersible motor pump model 144,324 - Contributed to reduction of power consumption by changing to a high-efficiency, long-life ESPs according to well production capacity Improvement in power consumed per pump discharge volume — Z Base: 1.788 → 1.259 kWh/kL /IA Base: 1.012 → 0.956 kWh/kL
Kashiwazaki Iron Plant — Introduced energy-saving facilities (lighting facilities) 159 - Contributed to reduction of power consumption by switching to LED lighting 75% reduction in power consumption compared with the previous year
Naoetsu LNG Terminal — Constructed a switching connection from the venting stack to the flaring stack 98,130 - Contributed to reduction of methane gas and other gases emissions by switching from the vent system to the flare system (in fiscal 2016, advance construction of a connection only) Not quantifiable
Koshijihara Plant - Changed drain line from compressor tank 14,660 - Contributed to reduction of methane gas and other gases emissions by switching from open drain system to closed drain system Reduction annual hydrocarbone emissions by 10.95 m3
Chiba No.1 Gas plant - Replaced from the gas driven glycol pump to electric pump 6,500 - Contributed to reduction of power consumption by switching to a package type generator which generate Not quantifiable
Technical Research Center - Carried out regular periodic inspection of outodoor unit of gas heat pump system - 447 Contributed to reduction of methane gas and other gases emissions by switching from fuel gas to compressed air for start an engine Reduction annual hydrocarbone emissions by 500 m3
Koshijihara Power plant - Changed operation mode for the air-compressor - - Contributed to reduction of power consumption by switching to energy saving mode Reduction annual power consumption by 146,000kWh
Koshijihara Power plant - Adjusted gas turbine power output for low load operation - - Increased power generation amount by switching gas turbine power output from 5MW to 9MW Increased monthly power output by 800,000kWh
Sub-total 263,773 751    
Conservation of
air quality
Oyazawa Plant - Replaced exhaust adsorbents - 15,185 Replaced exhaust gas impurity adsorbents due to adsorbent performance degradation Not quantifiable
Koshijihara Plant - Replaced exhaust adsorbents - 27,770 Replaced exhaust gas impurity adsorbents due to adsorbent performance degradation Not quantifiable
Minamiaga No.1 Oil plant - Replaced desulfurization agent - 7,300 Replaced desulfurization agent due to adsorption performance degradation Not quantifiable
Ozeki Plant - Carried out overhaul and rebuilt of gas engine - 6,000 Contributed to keep exhaust gas clean to comply with all the regulations. Not quantifiable
Sub-total 0 56,255    
Conservation of
soil and
groundwater
environment
Yabase Plant - Install drain water pipe from Yabase Plant to the injection well 23,200 - Contributed to maintain water injection capacity by switching injection well Not quantifiable
Akita area - Environmental remediation after decommission 18,000 - Managing decommissioned site by constraction of road to the site and ditch at site boundary Not quantifiable
Sub-total 41,200 0    
Conservation of
water quality
Naoetsu LNG Terminal — Carried out integrity evaluation of buried piping under quay - 3,000 Performed an external corrosion survey to ensure integrity of pipe Not quantifiable
Sub-total 0 3,000    
Investment amount total 304,973 60,006    
Total 364,979    
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Environmental Investments in FY2016

Environmental Investments in FY2015

Environmental Investments in FY2014

Environmental Investments in FY2013

Environmental Investments in FY2012

Environmental Investments in FY2011

Environmental Investments in FY2010

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