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Environmental impact assessment of 660 mw thermal power plant
- 1. EIA FOR THERMALPOWER PLANT CASE STUDY: 660 MW Coal Fired Power Plant Construction Project at Lakhra, Pakistan PRESENTED BY: MUHAMMAD SAAD Agricultural Engineer
- 2. Contents: • Thermal powerplant • Why thermal power • EIA of the project – Agencies/contractors involved – introduction – Description of environment – Analysis of alternatives – Environmental impact and mitigation measures – EMP – conclusions
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- 4. Why Thermal Power? •Spontaneous energy • Amount of energy produced • Cheaper
- 5. ENVIRONMENTAL IMPACT ASSESSMENT OF660MW THERMAL POWER PLANT
- 6. Agencies/contractors Involved: Agencies involvedin EIA preparation: • JICA Survey Team (JST) comprising Nippon Koei Co., Ltd. and Mitsui Consultants Co., Ltd. • Hagler Bailly Pakistan (Private) Ltd. Contracting Agencies: • Japan international cooperation Agency (JICA) • Lakhra Power Generation Company Limited (LPGCL) • GENCO Holding Company Limited (GHGL)
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- 9. Plant Description: • Unitcapacity and load operation – Gross capacity, net capacity, base operation • Plant configuration – Boiler, turbine, generator, auxiliaries • Fuel to be burned – Blended coal, auxiliary fuel • Emission control – ESP, FGD • Grid connection – 500kV Transmission lines • Water supply – Water cooled condenser with natural draft type cooling tower
- 11. Selection of combustiontechnology: • Pulverized coal combustion (PC) • Fluidized bed combustion (FBC) • Integrated gasification combined cycle (IGCC)
- 12. Selection of SteamCondition:
- 13. Other components: • Furnace •Superheaters and reheaters • Economizer • Air and flue gas fans • Soot blowers • Fuel burning equipment • Ducts and wind boxes
- 14. Flue gas treatmentsystem:
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- 18. PHYSICAL ENVIRONMENT: • Geology •Topography and land use • Soil • Climate • Water resources • Air quality • Noise
- 19. Ecology: • Vegetation • Mammals •Reptiles and amphibians • Birds • Fish
- 20. Socio-economic Environment: • Demography •Land use • Economy and income level • Culture and tradition • Physical infrastructure • Heritage
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- 22. ALTERNATIVES: • Generation methodsand their cost • Alternative sites • Coal selection • Port options 1 coal fired thermal 7.6 2 gas turbine 7.9-8.3 3 gas and oil mixed thermal >12 4 oil thermal 17 5 diesel engine 23 6 wind power 15.5 7 hydropower 6.5 8 photo-voltaic 33.3
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- 24. Categories of Impact: •A+/-: Significant positive/negative impact is expected • B+/-: Positive/negative impact is expected to some extent • C+/-: Extent of positive/negative impact is unknown. (A further examination is needed, and the impact could be clarified as the study progresses) • D: No impact is expected
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- 26. MITIGATION MEASURES: • ESP:>99.7% efficient • FGD: >80% efficient, gypsum disposal • Low Nox burners • Stack height: 210 m • Ash disposal – Demarking, lining, monitoring, sprinkling • Dust suppression and extraction • Noise control: <55dB • Port capacity: 2 Million tons annually • Waste management • Water extraction control: 0.5 cumec extracted ,0.01 cumec returned
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- 28. EMPs: • Waste ManagementPlan • Construction Management Plan • Coal Dust Management Plan • Ash Management Plan • Fire Emergency Response Plan • Transportation Management Plan
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- 31. REFERENCES: • Lpgcl.gov.pk • Haglerbailly.com.pk •Cpec.gov.pk • Nepra.org.pk • cmsdata.iucn.org
Editor's Notes
- #10 1. Super critical system, Once-through boiler with pulverized coal (PC) firing 2. Single reheat condensing, tandem-compound steam turbine 3.Totally enclosed, three phase, 50Hz, synchronous generator 4. Auxiliary plants; coal handling system, ash handling system, water treatment system
- #13 The steam condition of 24.1MPa/ 593°C / 593°C, regarded as USC here,
- #19 In geology, we have to consider that how much this area is under the hazard of earthquake. Study area lies