Fiscal Year 2018 Project Implementation Feasibility Study for High-Quality Energy Infrastructure Overseas Development Study for LNG fired Combined Cycle Power Plant in Bangladesh Final Report March, 2019 Ministry of Economy, Trade and Industry Infrastructure System and Water Industry Manufacturing Industries Bureau Subcontractor Marubeni Power Systems Corporation Terms of Reference Chapter 1Background and Purposes 1.1 Background of the Study .............................................................................................................. 1-1 1.2 Purpose of the Study .................................................................................................................... 1-2 Chapter 2 Electric Power Supply and Demand in Bangladesh and Background of the Project 2.1 Current Situation between Electric Power Supply and Demand, Supply Plans in Bangladesh ... 2-1 2.2 Development of LNG Receiving Terminals in Bangladesh and Corresponding Power Plant Projects 2-4 2.3 Discussion from the Perspective of Development History in Japan ............................................. 2-5 2.3.1 Position of LNG in Power Generation Mix in Japan .................................................................... 2-5 2.3.2 Possibility of Development of Japan’s Project Development Technologies in Bangladesh ......... 2-6 Chapter 3Study for Basic Plan of the Project 3.1 Basic Concept of the Project ........................................................................................................ 3-1 3.2 Basic study of project business model.......................................................................................... 3-2 3.3 Study for project basic plan and major items of the power plant ................................................. 3-4 3.4 Concept of candidate site for this project ..................................................................................... 3-5 3.5 Study for overall schedule of the project ...................................................................................... 3-6 Chapter 4 Select of Project Candidate Site 4.1 Select of Project Candidate Site ................................................................................................... 4-1 4.2 Field survey .................................................................................................................................. 4-2 4.2.1 Siddhirganj Thermal Power Plant (BPDB) .................................................................................. 4-3 4.2.2 Feni Thermal Power Plant (EGCB) .............................................................................................. 4-5 4.2.3 Gazaria Thermal Power Plant (RPCL) ......................................................................................... 4-7 4.3 Comprehensive evaluation of candidate project site .................................................................... 4-8 4.3.1 Siddhirganj Thermal Power Plant (BPDB) .................................................................................. 4-9 4.3.2 Feni Thermal Power Plant (EGCB) .............................................................................................. 4-9 4.3.3 Gazaria Thermal Power Plant (RPCL) ....................................................................................... 4-10 Chapter 5Study for Power Plant 5.1 Conceptual Design ....................................................................................................................... 5-1 5.1.1 Design condition .......................................................................................................................... 5-1 5.1.2 Outline of power plant system ...................................................................................................... 5-2 5.1.3 Examination for Shaft Configuration ........................................................................................... 5-3 5.1.4 Gas Turbine Candidates................................................................................................................ 5-5 5.2 Basic Systems in Power Plant Design ........................................................................................ 5-12 5.2.1 Gas Turbine System ................................................................................................................... 5-12 5.2.2 Heat Recovery Steam Generator (HRSG) and Auxiliary Equipment ......................................... 5-19 5.2.3 Steam Turbine System ................................................................................................................ 5-23 5.2.4 Electrical equipment ................................................................................................................... 5-27 5.2.5 Plant C&I system (Common for three sites) .............................................................................. 5-33 5.2.6 Common facilities ...................................................................................................................... 5-36 i 5.2.7 Switchyard .................................................................................................................................. 5-41 5.3 Study for plant layout of power plant ......................................................................................... 5-42 5.3.1 Design condition ........................................................................................................................ 5-42 5.3.2 Plant layout ................................................................................................................................. 5-42 5.4 Study for construction schedule of power plant ......................................................................... 5-46 Chapter 6Study of Power Evacuation 6.1 Basic Study of Power Evacuation ................................................................................................ 6-1 6.1.1 Precondition ................................................................................................................................. 6-1 6.1.2 Study of Transmission Line Voltage ............................................................................................. 6-1 6.1.3 Study of Conductor Size............................................................................................................... 6-2 6.1.4 Study of insulator ......................................................................................................................... 6-3 6.1.5 Study of transmission line tower design ....................................................................................... 6-4 6.1.6 Estimated transmission line cost per kilometer ............................................................................ 6-6 6.2 Planning of transmission line route .............................................................................................. 6-6 6.2.1 Planning condition ........................................................................................................................ 6-6 6.2.2 Estimation of Power Flow ............................................................................................................ 6-6 6.2.3 Study of the route of transmission line ....................................................................................... 6-16 6.2.4 Estimation of budget costs of transmission line for power evacuation ...................................... 6-23 6.2.5 Expected construction schedule of transmission line for grid .................................................... 6-24 Chpater 7Environmental Evaluation 7.1 Siddhirganj Power Station ............................................................................................................ 7-1 7.1.1 Study Area .................................................................................................................................... 7-1 7.1.2 Geographical Features .................................................................................................................. 7-2 7.1.3 Environmental Evaluation and Expected Risk ............................................................................. 7-3 7.1.3.1 Influence on Ecosystem ............................................................................................................... 7-3 7.1.3.2 Influence on Air and Water Quality ............................................................................................. 7-3 7.1.4 Countermeasure ............................................................................................................................ 7-3 7.2 Feni Power Station ....................................................................................................................... 7-6 7.2.1 Study Area .................................................................................................................................... 7-6 7.2.2 Geographical Features .................................................................................................................. 7-7 7.2.3 Environmental Evaluation and Expected Risk ............................................................................. 7-8 7.2.3.1 Influence on Ecosystem ............................................................................................................... 7-8 7.2.3.2 Influence on Air and Water Quality ............................................................................................. 7-8 7.2.4 Countermeasure ...........................................................................................................................