Visit the newest INPEX Sustainability Report

2023

Sustainability Report 2022 (for FY2021)

Sustainability Report 2022 (for FY2021)

Cost of Environmental Technologies

Cost of Environmental Technologies

Environmental Investments in FY2020 — Implementation and Effects (January to December 2020)

Objective

Investment Item

Investment Amount (thousand Yen)

Environmental Benefit

Capital Investment

Operating Expense

Global warming prevention (includes cost of energy conservation measures)

Ichthys Onshore:
Preventative/corrective maintenance at T1 and T2 Acid Gas Removal areas

135,000

 

Cost of preventative/corrective maintenance at T1 and T2 Acid Gas Removal areas for the year.

Ichthys Offshore:
CPF/FPSO flaring reduction technologies

525,000

 

Ongoing commissioning activities on the Flash Gas Recovery and Off Gas Recovery systems on the CPF & FPSO, to reduce flaring/greenhouse gas emissions.

US Shale Oil:
Flaring reduction

4,538

 

Reduction of vent

US Shale Oil:
Gas lift line inspection

 

2,681

Prevention of methane leakage

Chiba:
IA wellpad, inverter installation to 61/62 well

57,900

 

power saving

Akita:
Renewal of gas detection sysytem

28,700

 

Prevention of methane leakage

Sub-total

751,138

2,681

 

Conservation of air quality

Ichthys Onshore:
Environmental licence to operate condition

 

11,250

Stack emission monitoring

Nagaoka Oyazawa Plant:
Replacement of exhaust adsorbents

49,943

 

Maintaining absorbents performance

Nagaoka Koshijihara Plant:
Train C - Replaced catalytic agents

43,100

 

Maintaining VOC removal performance

Nagaoka Koshijihara Plant:
Train C - Replaced adsorbents

6,313

 

Removal of impurities

Minamiaga Ozeki Plant:
Maintenance gas powerd engine

 

9,600

Prevention of air pollution

Sub-total

99,356

20,850

 

Conservation of soil and groundwater environment

US Shale Oil:
Water line upgrade

138,189

 

Prevention of contamination

Minamiaga Shin-Kuwayama Plant:
Deferred maintenance of drainage ditch

 

760

To prevent deterioration, implemented the deferred maintenance of drainage ditch including re-constructing of the earthwork and the replacement of the earthwork sheet curing. (2nd year of 2-year work plan)

Minamiaga Ozeki Plant:
Deferred maintenance of drainage ditch

 

1,220

To prevent deterioration, implemented the deferred maintenance of drainage ditch including re-constructing of the earthwork and the replacement of the earthwork sheet curing. (1st year of 3-year work plan)

Chiba:
BB wellpad water pool maintenance

13,000

 

Prevention of water leakage

Chiba:
Water pipeline inspection

 

30,900

Prevention of water leakage

Chiba:
No.7 water pipeline corrosion protection

 

25,100

Prevention of water leakage

Akita Sotoasahikawa Plant:
Repair of pump buildings

330

 

Prevention of accident

Nagaoka Oyazawa Plant:
No.3 water well discharge pipe remodelling

4,900

 

Reduce of water use

Sub-total

156,419

57,980

 

Conservation of water quality

Ichthys Onshore:
Operate and maintain pollution control plant and equipment

 

32,250

Preventative/corrective maintenance at the Hazardous Drains, Service & Drinking Water and Drain & Effluent Treatment areas of the plant

Ichthys Onshore:
Operate and maintain pollution control plant and equipment

 

15,000

Costs associated with engaging a specialist contractor to maintain and operate the sewage treatment plant

Ichthys Offshore:
CPF/FPSO oil-in-water treatement technologies

 

11,700

Ongoing commissioning activities, including oily water analyser commissioning, maintenance and other consultancy services manage oily water discharges to meet licence limits.

Sub-total

0

58,950

 

Waste Management

Ichthys Onshore:
Waste management

 

187,500

Cost of routine site waste disposal including amine disposal

Ichthys Offshore:
Waste management

 

165,000

All offshore (CPF/FPSO) waste recycling and disposal costs.

Sub-total

0

352,500

 

Project Management

Ichthys Onshore:
License renewal

 

1,125

costs associated with the annual renewal of the environmental licence

Ichthy Onshore:
Environmental licence to operate condition

 

3,750

Costs associated with the annual statutory environmental audit

Ichthys Offshore:
Environmental Planning / Oil Pollution Emergency Planning

 

26,100

Costs for consultants/Specialists modelling etc for preparation of Environment Plans and Oil Pollution Emergency Plans, and NOPSEMA regulatory assessment and compliance fees

Ichthys Offshore:
Oil spill preparedness

 

32,250

Spill response support, equipment maintenance, technology subscriptions and other spill preparedness/response service provider costs

Sub-total

0

63,225

 

Onshore monitoring environmental impact / Conservation of soil and groundwater environment

Ichthys Onshore
Groundwater

 

5,839

Determine whether unplanned discharges from the ILNG have resulted in a detectable environmental impact to groundwater (onshore)

Ichthys Onshore
Weed Surveys

 

4,089

Determine the presence/absence of invasive weed species (onshore)

Ichthys Onshore
Vegetation Surveillance

 

1,788

Determine the rehabilitation of the GEP Corridor (onshore)

Ichthys Onshore
Mangroves

 

5,717

Determine whether unplanned discharges from the ILNG have resulted in a detectable environmental impact to mangrove health, intertidal sediments and bio-indicators (onshore)

Ichthys Onshore
Harbour Sediment

 

2,755

Determine if there are measurable impacts to the receiving environment from routine wastewater discharges to Darwin Harbour (onshore)

Nagaoka:
Boron monitoring

27,600

 

Boron monitoring on effluent water

Nagaoka Koshijihara Plant:
Drain line remodelling

71,300

 

Prevention of spill of effluent

Nagaoka Oyazawa Plant:
Drain line remodelling

23,000

 

Prevention of spill of effluent

Ichthys Onshore:
Jetty outfall

 

6,771

Determine if there are measurable impacts to the receiving environment from routine wastewater discharges to Darwin Harbour (onshore)

Ichthys Onshore:
Onshore WET testing

 

2,073

To determine the ecotoxicity of liquid waste streams from the ILNG into Darwin Harbour (onshore)

Sub-total

121,900

29,031

 

Offshore monitoring environmental impact

Ichthys Offshore:
Offshore Chemical Characterisation

 

4,756

Compliance monitoring for Offshore Facilities EP + Liquid Effluent Management Plan

Ichthys Offshore:
Offshore WET testing

 

9,045

Compliance monitoring for Offshore Facilities EP + Liquid Effluent Management Plan

Ichthys Offshore:
Operational & scientific monitoring readiness

 

1,875

Compliance requirement to demonstrate OSMP preparedness to NOPSEMA in accordance with relevant EPs (Offshore, GEP, Drilling, Exploration, Sesmic, Nearshore etc).

Ichthys Offshore
Offshore marine pest observations / Applied Research Program (ARP 10 Ecotoxicology of condensate)

 

9,689

To determine the ecotoxicity of Ichthys condensate from Browse Basin and appropriate oil spill modelling thresholds

Sub-total

0

25,365

 

Monitoring environmental impact / Biodiversity conservation

Ichthys Onshore (Biodiversity)
Ichthysthys Project Voluntary Offset Agreement (IPVOA)Offset Program 1

 

40,886

NTG-run offset program for Integrated Marine Monitoring Research Program (IMMRP) of Darwin Harbour (onshore)

Ichthys Onshore (Biodiversity)
IPVOA Offset Program 11

 

2,886

Establishing land and sea area(s) to permanently protect 2000ha of terrestrial vegetation and additional marine habitat for target species

Ichthys Onshore (Biodiversity)
Offshore Marine Pest Observations

 

547

Determine the presence/absence of invasive marine pest species on high-risk offshore marine assets (offshore)

Sub-total

0

44,320

 

CAPEX/OPEX total

1,128,814

654,902

 

Invested amount total

1,783,715

 

Environmental Investments in FY2019

Environmental Investments in FY 2019 — Implementation and Effects (April 2019 to December 2019)

Objective

Investment Item

Investment Amount (Thousand Yen)

Environmental Benefit

Capital Investment

Operating Expense

Global warming prevention (includes cost of energy conservation measures)

Ichthys Onshore
Operate and maintain pollution control plant and equipment

 

101,129

Cost of preventative/corrective maintenance at T1 and T2 Acid Gas Removal areas for the year.

Ichthys Onshore
Leak prevention maintenance of the amine system

 

4,869

Costs associated with the band-lock replacements on the amine system to prevent leaks

Ichthys Offshore
CPF/FPSO flaring reduction technologies

674,190

 

Ongoing commissioning activities on the Flash Gas Recovery and Off Gas Recovery systems on the CPF & FPSO, to reduce flaring/greenhouse gas emissions.

Sub-total

674,190

105,998

 

Conservation of air quality

Oyazawa Plant — Replaced exhaust adsorbents

 

16,791

Replaced exhaust gas impurity adsorbents due to adsorbent performance degradation

Koshijihara Plant Train C — Replaced catalytic agents

 

40,355

Replaced catalytic agents of catalytic incinerators for control of VOCs due to catalytic performance degradation

Koshijihara Plant Train A/B — Replaced exhaust adsorbents

 

29,709

Replaced exhaust gas impurity adsorbents due to adsorbent performance degradation

Ichthys Onshore
Environmental licence to operate condition

 

8,427

Stack emission monitoring

Ichthys Onshore
Operate and maintain pollution control plant and equipment

 

32,211

Cost of preventative/corrective maintenance at the flare systems

Sub-total

0

127,494

 

Conservation of soil and groundwater environment

Minami-aga Shin—Kuwayama plant —
Deferred maintenance of drainage ditch

760

 

To prevent deterioration, implemented the deferred maintenance of drainage ditch including re-constructing of the earthwork and the replacement of the earthwork sheet curing. (1st year of 2-year work plan)

Minami-aga Ozeki plant —
Deferred maintenance of drainage ditch

1,220

 

To prevent deterioration, implemented the deferred maintenance of drainage ditch including re-constructing of the earthwork and the replacement of the earthwork sheet curing. (1st year of 3-year work plan)

Chiba KA well pad — Deferred maintenance of production separator

15,000

 

To prevent deterioration, implemented the deferred maintenance of the production separator made of cement including repairing the structure and re-painting the internal coating

Chiba — Drainage water pipeline inspection

 

589,000

To reduce the risk of pollution from leaks, implemented pipe body survey of all drainage water pipeline.

Chiba — Bypass pipeline work of water plant

13,800

 

To reduce the risk of operation shutdown due to leaks, implemented bypass water pipeline work at water plant.

Akita well pads — Install flowline from SR-123, KR-82 and KR-83 well pads to Sotoasahikawa Plant

9,500

 

As a result of the well integrity study, it was determined that high pressure facilities were required for the SR-123, KR-82 and KR-83 wells, and the pipes were replaced to high pressure pipes.

Akita Sotoasahikawa plant — Re-painting and replacement pipes/valves

7,900

 

To reduce the risk of pollution from leaks, re-painted and replaced the severely corroded pipes/valves to new ones

Akita Sotoasahikawa plant — Repair and replace the wash tank body/pipes

 

17,030

As a result of the well integrity study of wash tank, repaired and replaced the corroded tank body/pipes

Akita Yabase plant — Re-painting and replacement pipes/valves

10,000

 

To reduce the risk of pollution from leaks, re-painted and replaced the severely corroded pipes/valves to new ones

Akita Sotoasahikawa plant — Replacement of water injection pump discharge piping

3,200

 

To reduce the risk of operation shutdown due to pump leaks and malfunctions and to reduce the risk of pollution from leaks, replaced the severely corroded/damaged pipes

Akita — Install gas sales pipe from Sotoasahikawa Plant to the sales gas pipe line

15,650

 

To reduce the risk of pollution from leaks, replaced the severely corroded pipes to new pipes as a result of the investigation.

Sub-total

77,030

606,030

 

Conservation of water quality

Ichthys Onshore
Operate and maintain pollution control plant and equipment

 

11,237

Costs associated with engaging a specialist contractor to maintain and operate the sewage treatment plant

Ichthys Onshore
Operate and maintain pollution control plant and equipment

 

24,158

Cost of preventative/corrective maintenance at the Hazardous Drains, Service & Drinking Water and Drain & Effluent Treatment areas of the plant for the year

Ichthys Offshore
CPF/FPSO oil-in-water treatment technologies

 

9,738

Ongoing commissioning activities, including oily water analyser commissioning, maintenance and other consultancy services manage oily water discharges to meet licence limits.

Sub-total

0

45,133

 

Disposal of industrial waste

Ichthys Onshore
Waste management

 

97,383

Cost of routine site waste disposal plus amine disposal

Ichthys Offshore
Waste management

 

202,257

All offshore (CPF/FPSO) waste recycling and disposal costs.

Sub-total

0

299,640

 

Administration Cost

Ichthys Onshore
Licence renewal

 

1,124

Costs associated with the annual renewal of the environmental licence

Ichthys Onshore
Environmental licence to operate condition

 

3,746

Costs associated with the annual statutory environmental audit

Ichthys Offshore
EP/OPEPs

 

24,720

Costs for consultants/Specialists modelling etc for preparation of Environment Plans and Oil Pollution Emergency Plans, and NOPSEMA regulatory assessment and compliance fees

Ichthys Offshore
Oil Spill Preparedness

 

32,211

Spill response support, equipment maintenance, technology subscriptions and other spill preparedness/response service provider costs

Sub-total

0

61,801

 

Onshore monitoring environmental impact / Conservation of soil and groundwater environment

Ichthys Onshore
Groundwater

 

5,282

Determine whether unplanned discharges from the ILNG have resulted in a detectable environmental impact to groundwater (onshore)

Ichthys Onshore
Weed Surveys

 

3,468

Determine the presence/absence of invasive weed species (onshore)

Ichthys Onshore
Vegetation Surveillance

 

1,599

Determine the rehabilitation of the GEP Corridor (onshore)

Ichthys Onshore
Mangroves

 

2,480

Determine whether unplanned discharges from the ILNG have resulted in a detectable environmental impact to mangrove health, intertidal sediments and bio-indicators (onshore)

Ichthys Onshore
Harbour Sediment

 

3,725

Determine if there are measurable impacts to the receiving environment from routine wastewater discharges to Darwin Harbour (onshore)

Onshore monitoring environmental impact / Conservation of water quality

Ichthys Onshore
Jetty Outfall

 

4,307

Determine if there are measurable impacts to the receiving environment from routine wastewater discharges to Darwin Harbour (onshore)

 

Sub-total

0

20,862

 

Offshore monitoring environmental impact / Conservation of water quality

Ichthys Offshore
Offshore Water and Sediment

 

42,834

Determine whether PFW discharges from Offshore facilities have resulted in a detectable environmental impact (offshore)

Ichthys Offshore
Offshore Chemical Characterisation

 

5,731

To characterise the chemical composition of liquid waste streams from the Offshore Facilities (CPF + FPSO) (offshore)

Ichthys Offshore
Offshore WET Testing

 

14,190

To determine the ecotoxicity of liquid waste streams from the Offshore Facilities (CPF + FPSO) (offshore)

Offshore monitoring environmental impact

Ichthys Offshore
Operational & Scientific Monitoring Readiness

 

866

Readiness to respond to major hydrocarbon spills

Ichthys Offshore
Drill Cuttings Study

 

5,711

To determine composition of drill cuttings and assess environmental impacts

Ichthys Offshore
Applied Research Program (ARP 10 Ecotoxicology of condensate)

 

3,913

To determine the ecotoxicity of Ichthysthys condensate from Browse Basin and appropriate oil spill modelling thresholds

 

Sub-total

0

73,245

 

Monitoring environmental impact / Biodiversity conservation

Ichthys Onshore (Biodiversity)
Ichthysthys Project Voluntary Offset Agreement (IPVOA) Offset Program 1

 

60,782

NTG-run offset program for Integrated Marine Monitoring Research Program (IMMRP) of Darwin Harbour (onshore)
40 year offset program (commenced 2014)
$20M offset commitment

Ichthys Onshore (Biodiversity)
IPVOA Offset Program 6

 

47,290

Long-term monitoring of coastal dolphins in Darwin Harbour and the abundance and distribution of dugongs in the Northern Territory (Program 6) (onshore)
5 year offset program (commenced 2019)
$2.5M offset commitment

Ichthys Onshore (Biodiversity)
Offshore Marine Pest Observations

 

692

Determine the presence/absence of invasive marine pest species on high-risk offshore marine assets (offshore)

Sub-total

0

108,764

 

Investment amount total

751,220

1,448,966

 

Total

2,200,186

 

Environmental Investments in FY2018

Environmental Investments in Fiscal 2018 — Implementation and Effects (April 2018 to March 2019)

Objective

Investment Item

Investment Amount (thousand Yen)

Environmental Benefit

Quantitative Evaluation of Investment Effect or Reduction of Environmental Impact (Physical Units)

Capital Investment

Operating Expense

Global warming prevention (includes cost of energy conservation measures)

Chiba Field Production Well — Changed submersible motor pump model

29,366

-

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 —
Well A: 1.81 →1.53 kWh/kL /
Well B: 1.53→ 1.31 kWh/kL /
Well C: 1.55→ 0.85 kWh/kL

Naoetsu LNG Terminal — Constructed a switching connection from the venting stack to the flaring stack

230,970

-

Contributed to reduction of methane gas and other gases emissions by switching from the vent system to the flare system.

Construction finished at end of 2018. Zero vent gas since then.

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 146,000 kWh

Sub-total

260,336

0

 

 

Conservation of air quality

Oyazawa Plant - Replaced exhaust adsorbents

-

30,561

Replaced exhaust gas impurity adsorbents due to adsorbent performance degradation

Not quantifiable

Koshijihara Plant Train A/B — Replaced exhaust adsorbents

-

42,710

Replaced exhaust gas impurity adsorbents due to adsorbent performance degradation

Not quantifiable

Koshijihara Plant Train C — Replaced exhaust adsorbents

-

29,310

Replaced exhaust gas impurity adsorbents due to adsorbent performance degradation

Not quantifiable

Ozeki Plant - Carried out overhaul and rebuilt of gas engine

-

9,600

Contributed to keep exhaust gas clean to comply with all the regulations.

Not quantifiable

Sub-total

0

112,181

 

 

Conservation of
soil and
groundwater
environment

Yabase Plant — Carried out integrity evaluation of buried piping at river bridge section

-

12,000

Performed an external corrosion survey to ensure integrity of pipe

Not quantifiable

Sotoasahikawa Plant — Install gas sales pipe from Sotoasahikawa Plant to the sales gas pipe line

16,600

-

Contributed to maintain gas sales pipe by switching to new pipe in oder to preevent pipe corrosion.

Not quantifiable

Omonogawa Plant — Install drain water pipe from Omonogawa Plant to the injection well

6,500

-

Contributed to maintain water injection capacity by switching to new injection pipe line.

Not quantifiable

Sub-total

23,100

12,000

 

 

Conservation of water quality

Technical Research Center — Carried out regular periodic inspection of waste water treatment unit

-

254

Performed an external corrosion survey to ensure integrity of pipe

Not quantifiable

Sub-total

0

254

 

 

Investment amount total

283,436

124,435

 

 

Total

407,871

 

 

Environmental Investments in FY2017

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 Units)

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 146,000 kWh

Koshijihara Power plant — Adjusted gas turbine power output for low load operation

-

-

Increased power generation amount by switching gas turbine power output from 5 MW to 9 MW

Increased monthly power output by 800,000 kWh

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

 

 

Environmental Investments in FY2016

Environmental Investments in Fiscal 2016 —Implementation and Effects (April 2016 to March 2017)

Objective

Investment Item

Investment Amount (thousand Yen)

Environmental Benefit

Quantitative Evaluation of Investment Effect or Reduction of Environmental Impact (Physical Units)

Capital Investment

Operating Expense

Global warming prevention (includes cost of energy conservation measures)

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)

Oyazawa Plant — Replaced outdoor lighting facilities

-

15,000

Saved energy by adopting LED lighting

Energy-saving effect of 0.5 kL/year (crude oil equivalent)

Chiba Field Office — Changed submersible motor pump model

103,828

-

Contributed to reduction in 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)

3,624

-

Converted lighting equipment to LED lighting accompanying reconstruction of the former maintenance shop

Energy-saving effect of 0.74 kL/year (crude oil equivalent)

Kashiwazaki Iron Plant — Introduced energy-saving facilities (air conditioning facilities)

6,127

-

Introduced gas heat pump air conditioners accompanying reconstruction of the former maintenance shop

Energy-saving effect of 0.12 kL/year (crude oil equivalent)

Constructed a switching connection to the Naoetsu LNG Terminal vented gas combustion stripper

16,600

-

Curbed venting of methane gas and other gases by switching to the Naoetsu LNG Terminal vented gas combustion stripper (in fiscal 2016, advance construction of a connection only)

Not quantifiable

Converted tank truck filling station lighting to LED lamps

-

6,100

Converted 24 lighting fixtures to LED lamps due to aging of tank truck filling station lighting

Annual reduction of 34,775 kW/h

Technical Research Center — Replaced emergency generator

23,600

-

Reduced power consumption by replacing the existing generator with a package-type generator

Not quantifiable

Gas Guarico — Installed gas compressor start-up air compressors and incidental equipment

15,320

-

Eliminated hydrocarbon gas leakage and venting by using high-pressure compressed air to start up the gas engines that drive gas compressors

Annual reduction in vented gas (CH4) of approx. 500 Nm3/year

Sub-total

169,099

21,404

 

 

Conservation of air quality

Koshijihara Plant — Truck VOC facilities inspected by the manufacturer

-

12,030

Inspected truck VOC removal systems

VOC emissions reduced

Oyazawa Plant — Replaced VOC removal systems PLC and performed redundancy construction

10,500

-

Prevented VOC removal systems malfunction due to PLC aging degradation

Not quantifiable

Oyazawa Plant — Replaced VOC removal systems catalyst

-

24,982

Replaced VOC removal systems catalyst due to catalyst performance degradation

Not quantifiable

Oyazawa Plant — Replaced exhaust gas impurity adsorbents

-

15,185

Replaced exhaust gas impurity adsorbents due to adsorbent performance degradation

Not quantifiable

Koshijihara Plant Tr-C — Replaced crude oil impurity adsorbents

-

21,707

Replaced crude oil impurity adsorbents due to adsorbent performance degradation

Not quantifiable

Minami-Aga No. 1 Plant — Performed filter basin cover repair work

30

-

Performed filter basin cover repair work to reduce VOCs emitted from gaps due to aging of the cover

Not quantifiable

Sub-total

10,530

73,904

 

 

Conservation of
soil and
groundwater
environment

Akita Field Office — Installed lost circulation detectors in wells

9,100

-

Installed lost circulation detectors on pumping oil wells (6 wells) in the Akita area and prevented leakage oil due to equipment damage when lost circulation occurs

Not quantifiable

Akita Field Office — Installed tank level alarms

4,100

-

Installed level switches for liquid level height alarms on measuring tanks, warming tanks, and product tanks at the Niibori Gathering Station

Not quantifiable

Naruto No. 1 and No. 2 Gas Plants — Installed oil leak detectors

11,250

-

Since drain water containing lubricating oil may flow outside the system if a problem occurs with the treatment system for gas compressor drain water containing lubricating oil, installed oil leak detectors at the ends of external discharge paths

Not quantifiable

Sub-total

24,450

0

 

 

Conservation of the natural environment

Performed landscaping of vacant land set aside for tanks within the Naoetsu LNG Terminal

29,740

-

Mowed vacant land set aside for tanks

Not quantifiable

Sub-total

29,740

0

 

 

Other

Oyazawa Plant — Modified firefighting equipment

436,500

-

Installed large-scale foam extinguishing facilities/installed crude oil tank water spray rings/installed slop tank foam extinguishing lines/converted to remote operation of foam extinguishing master valves/installed oil and grease warehouse firefighting water curtain facilities/converted to remote operation of oil pan drain valves, etc.

Not quantifiable

Sub-total

436,500

0

 

 

Investment amount total

670,319

95,308

 

 

Total

765,627

 

 

Environmental Investments in FY2015

Environmental Investments in Fiscal 2015 —Implementation and Effects (April 2015 to March 2016)

Objective

Investment Item

Investment Amount
(thousand Yen)

Environmental Benefit

Quantitative Evaluation of Investment Effect or Reduction of Environmental Impact (Physical Units)

Capital Investment

Operating Expense

Climate change
countermeasures
(includes cost of
energy conservation
measures)

No. 1 Gas Plant — Made modifications near the separation tanks accompanying a change of gas compressor suction pressure

225,662

-

Resulting positive pressure on the flow lines from wells led to decreases in line purging frequency and natural gas (GHG) emissions at the time of well production

Currently confirming results

Oyazawa Plant — Replaced outdoor lighting facilities

-

26,800

Replaced lighting facilities on the Oyazawa Plant grounds with LED lighting (FY2015: 68 sets)

Energy-saving effect of 1.35 kL/year (crude oil equivalent)

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)

Converted to LED lighting at parking facilities

-

490

Converted parking facility lighting from mercury lamps to LED lamps at four locations

Electricity consumption reduced by approx. 3,112 kW/year

Replaced air conditioning facilities

-

9,157

Replaced the air conditioning at the Tamagawa Dormitory with energy-efficient air conditioning

Unquantifiable

Sub-total

225,662

36,751

 

 

Conservation of
air quality

Koshijihara Plant — Converted firefighting equipment

69,600

-

Installed slop tank foam extinguishing lines and tank sprinkling equipment / converted to remote operation of foam extinguishing lines and tank sprinkling master valves / converted to remote operation of oil pan drain valves, etc.

Air pollution and water contamination damage from tank fires prevented

Koshijihara Plant — Increased the number of fire pumps

79,000

-

Added spare fire pumps

Air pollution and water contamination damage from tank fires prevented

Increased the number of fire pumps

82,200

-

Added spare fire pumps

Air pollution and water contamination damage from tank fires prevented

Koshijihara Plant Tr-A — Converted the VOC removal system temperature control mechanism to a distributed control system (DCS)

20,000

-

Converted the VOC removal device's temperature control to PCR-based

Enabled rapid temperature control operation and increased the probability of trip avoidance when a system temperature imbalance occurs

Koshijihara Plant — Lorry VOC facilities inspected by the manufacturer

-

23,430

Inspected lorry VOC removal systems

VOC emissions reduced

Koshijihara Plant Tr-A/B — Replaced exhaust gas impurities adsorbent

-

31,800

Exhaust gas impurity removal system adsorbent replaced due to deterioration of performance

Impurities removal: 30 kg/year

Koshijihara Plant Tr-C — Replaced crude oil impurities adsorbent

-

22,300

Crude oil impurity removal system adsorbent replaced due to deterioration of performance

VOC emissions reduced

Cleaned the inside of the No.1
VOC removal system air
stripper and filling material

-

730

Maintained and improved VOC removal capacity by cleaning and removing iron oxide and other substances accumulated in the air stripper (filling material)

VOC emissions reduced

Performed maintenance on No.2 VOC removal system

-

1,740

Maintained VOC removal capacity by replacing the system's raw water pump, flowmeter, and chemical feed tank

VOC emissions reduced

Sub-total

250,800

80,000

 

 

Conservation of
soil and
groundwater
environment

Conducted an integrity investigation of the Kusouzugawa dedicated bridge

-

31,500

Approx. 40 years have passed since construction of a dedicated pipeline (including oil) bridge within a class A river. Since oil may flow into public waters if a leak occurs, for a reason including pier or superstructure damage, bridge integrity was verified and coating performed to prevent pollution

Oil leak volume: zero

Installed oil leak detectors at each plant

39,100

-

Since oil may flow into public waters through drainage channels if a leak from plant production facilities occurs, oil leak detectors were installed in oil pans and final water catch basins in drainage channels on plant grounds to minimize the occurrence of pollution

Oil leak volume: zero

Drilled an LA Site land subsidence observation well

-

11,110

Ascertained the situation at a location where land subsidence occurred after the start of production of a well within the LA Site

Land subsidence observation

Minami-Aga No. 1 Plant — Partially replaced a well water injection pipe

-

16,500

Leaks are occurring at a frequency of approx. twice a year from a well water injection pipe replaced in 1979. Since water may flow into nearby rice paddies and cause pollution if a high-volume leak occurs, a portion of the pipe was replaced

Oil leak volume: zero

Koshijihara Plant — Installed water supply well flowmeters

17,000

-

Installed flowmeters on the No. 3 water supply well discharge line and off-premises road sprinkling line

Ascertainment of groundwater pumping volume

Implemented 8000 flowmeter yard oil leak prevention measure

810

-

Reduced oil leakage risk by adding a drainage tank, manual drainage valve, and drainage pump upstream of the end drainage tank

Oil leak volume: zero

Sub-total

56,910

59,110

 

 

Prevention of noise and vibration

Minami-Aga Plant — Installed noise reduction measures

8,000

-

Installed noise reduction measures on injection pumps and outdoor radiator units at the Shinkuwayama Plant and Ozeki Plant

Noise reduction

Sub-total

8,000

0

 

 

Investment amount total

541,372

175,861

 

 

Total

717,233

 

 

Environmental Investments in FY2014

Environmental impacts for fiscal 2014 (graphic)
*Data on the output of PRTR substances was collected only from our domestic operations
Environmental Investments in Fiscal 2014 —Implementation and Effects (April 2014 to March 2015)

Objective

Investment Item

Location/Facility

Investment Amount
(thousand Yen)

Environmental Benefit

Quantitative Evaluation of Investment Effects or Environmental Impact Reduction (Physical Units)

(A) New Installation

(B) Upgrade/ Repair/ Maintenance

(A+B) Total

Climate change counter­measures (includes cost of energy conservation measures)

Switched to energy-saving lighting

Niigata, Chiba

Maintenance shop, machine shop, welding shop, administration buildings at Chiba District Office, Kashiwazaki Workshop, Logistics

 

12,809

12,809

Reduced electricity consumption by switching from fluorescent lamps to LED lighting

Electricity consumption reduced by 20,700 kWh/year

Switched to energy-saving air conditioning facilities

Tokyo

Air conditioning facilities in all buildings at Technical Research Center

 

114,668

114,668

Reduced electricity consumption by completely switching from gas boiler heating/electric cooling facilities to energy-saving gas heat pump air conditioners

Electricity consumption reduced by 185,977 kWh/year

Changed gas compressor suction pressure

Chiba

Gas compressors at No. 2 Gas Plant

64,608

 

64,608

Reduced electricity consumption by adding compressor processing volume

Electricity consumption reduced by 124,800 kWh/year (130 operating days)

Constructed photovoltaic power generation facility

Niigata

Building at Pipeline Monitoring Center

55,914

 

55,914

Reduced GHG emissions by using renewable energy

GHG emissions reduced by 4.74 t-CO2/year

Used air compressor high-pressure air for engine start-up

Venezuela

Gas compressors at Copa Macoya Plant

13,900

 

13,900

Curbed CO2 leakage and venting by using high-pressure compressed air for gas engine start-up

GHG emissions reduced by 6.6 t-CO2/year accompanying reduction in released gas (CH4) of approx. 500 Nm3/year

Installed the "Dr. Trap" system and software

Niigata

Steam traps in Nagaoka Field Office

1,800

 

1,800

Maintained the integrity of steam trap operation and reduced fuel consumption by installing the Dr. Trap system for detecting and replacing defective traps

Replaced 41 defective traps detected in steam trap inspections at 380 locations. Overall natural gas use at the Nagaoka Field Office reduced by 7% from the previous year

Sub-total

 

 

 

 

263,699

 

 

Conservation of
air quality

Converted VOC removal systems to digital systems

Niigata

VOC removal systems and temperature control mechanisms at the Koshijihara Plant and Oyazawa Plant

40,000

 

40,000

Improved VOC removal efficiency through an increase in the VOC removal system operating rate attained by increasing the probability of trip avoidance accompanying manual control of temperature control operation

Fiscal 2014 VOC removal system operating rate: 99.4%

Replaced VOC removal system catalyst

Niigata

VOC removal systems at Koshijihara Plant and Oyazawa Plant

 

52,700

52,700

Reduced VOC emissions into the atmosphere through processing capacity improvement accompanying catalyst replacement

VOC outlet concentration after catalyst replacement:

  • Benzene, toluene, xylene → Reduced to 0 mg/Nm3
  • VOC.Oyazawa → Reduced to 0 mg/Nm3

Koshijihara → Reduced to 129 mg/Nm3

Cleaned the inside of the VOC removal system air stripper and filling material

Niigata

VOC removal system at Logistics

 

1,350

1,350

Restored groundwater VOC processing capacity by cleaning inside of the air stripper and cleaning and removing deposits

VOC processing capacity:380 t/d in summer, 500 t/d in winter

Sub-total

 

 

 

 

94,050

 

 

Chemical substance management

Replaced adsorbents in mercury removal devices

Niigata

Exhaust gas/sales gas/crude oil impurity removal devices at Koshijihara Plant and Oyazawa Plant

 

98,944

98,944

Prevented impurity contamination of sales gas and sales oil and emission into the atmosphere by improving mercury removal capacity following adsorbent replacement

Amount of impurities removed: total of 670 kg/year (maintained capacity at the design value)

Sub-total

 

 

0

 

98,944

 

 

Conservation of
soil and
groundwater
environment

Installed leach filters on injection equipment

Chiba

Injection equipment at Site KA

114,807

 

114,807

Ensured stable injection water volume accompanying use of the injection water suspended solids removal method (land subsidence countermeasure)

Since additional countermeasure work was required after start of operation, quantitative evaluation to be conducted after completion of additional work (planned for fiscal 2016)

Installed oil leak detectors

Niigata

Plants and Site AB-40 at Minami Aga

53,590

 

53,590

Prevented oil leakage into public water bodies through early detection following introduction of a 24-hour automated monitoring system at unmanned sites

Oil leak volume: zero

Sub-total

 

 

 

 

168,397

 

 

Prevention of noise and vibration

Installed noise barriers and acoustic absorption materials

Akita, Chiba

Reboiler area and gas compressor rooms at Yabase Plant, Sotoasahikawa Plant, and No. 2 Gas Plant

43,754

 

43,754

Reduced noise near the plants by installing noise barriers and acoustic absorption materials

Noise reduction: 5 -10 db at the site boundaries

Changed the foundation pile driving method, adopted the auger drilling method

Niigata

Low-temperature LNG tank, facilities buildings, and equipment/pipes at Naoetsu LNG Terminal

 

72,100

72,100

Reduced vibration and noise by switching from the hammer method to the auger drilling method

Noise reduction: estimated value of approx. 20 db

Sub-total

 

 

 

 

115,854

 

 

Conservation of natural environment

Installed water sprinkling pipes, developed green belt (continued)

Niigata

Green belt at Naoetsu LNG Terminal

 

60,000

60,000

Improved the local environment and made possible CO2 absorption into the future through green belt development and planting of pines and other saplings

CO2 absorption effect from tree planting: 1580.2 t/year

Sub-total

 

 

 

 

60,000

 

 

Investment amount total (thousand yen)

388,373

412,571

800,944