Che 189 1f Plant Visit Evidente

CHE 189-1F/Field Trips and Seminar Plant Visit Report Format

Plant No. 1  Name of Plant: KOEN (Korea South Power Co.) Yeongheung Division  Nature of Business: It is a power generating company separated from Korea Electric Power Corporation (KEPCO) in accordance with the Korean government’s policy on Electric Power Sector Restructing announced on April 2, 2001. KOEN has now operated six power sites which are Samcheonpo Division, Bundang Division, Shin-Yeongheung Division, Yeongdong Division, Yeosu Division, and Yeongheung Division. The installed capacity combined is 9,979 MW which accounts for 10.2% of Korea’s total installed capacity (97,476 MW).

Y eongheung ngheung D i vi sion: They have six unit operations with a combined capacity of 5,080 MW, supplying approximately 25% of electricity consumption in Seoul Metropolitan Area. It is Korea’s largest thermal power site as well as a coal fired power site located in the Seoul Metropolitan Area. The power site has produced a large amount of electricity at a reasonable cost, contributing to the stable supply of electricity in the Seoul Metropolitan Area. Therefore, it takes a significant part in executing a national energy policy. When Yeongheung Units 7 and 8 are completed, it will become Korea’s largest power site with the combined installed capacity of 6,820 MW which will take up approximately 30% of electricity consumption in the Seoul Metropolitan Area. With advanced environmental equipment in operation, we strive to protect the environment while expanding employment and social contribution activities to develop local economy and improve the quality of life of local residents. We are also operating new and renewable energy facilities such as 2 MWp  photovoltaic power plant, 12.6 MW small hydro plant, 46 MW wind power generation complex and 4 MW Energy Storage System which enable us to lead low carbon and green growth. Given the transmission loss incurred in supplying power from the south of Chungbu Area (the midwestern part of the Korean peninsula) to the Seoul Metropolitan Area, Yeongheung Division is located very favorably to supply electric power to the Seoul Metropolitan Area. In addition, it supplies electricity at a cost of 40% less than a LNG fired plant, contributing remarkably to keeping electric bills affordable.

REPORT 1.) Make a block flow diagram of the processes in the plant

Turbine Building Boiler Building

Transmission Tower

Switchyard

Transformer

Generator

Steam Turbine

Boiler

Power Supply

Bottom Ash

Condenser

Coal Feeder

Water Treatment Plant

Selective Catalytic Reduction (SCR) Discharge Area

200-m Stack

Flue gas Desulfurization

Electrostatic Precipitator

2. Identify the different operations/equipment in the plant that are based on CHE principles. Identify the principles involved in such operation/equipment. a.) Boiler- closed equipment which boils water into high temperature then it turns high-pressurized steam to spin a turbine. The temperature inside the boiler is approximately 1400℃  and the temperature of steam produced is higher than 500℃.

 b.) Turbine  –  mechanical device that rotated by the force of steam produced in the boiler to drive a generator which is connected to a turbine via a shaft. c.) Generator – connected to a turbine shaft to rotate at a same speed an d is to generate electricity. The principle is that an electromotive force is generated in a electrical conductor which encircles a varying magnetic flux. d.) Condenser –  a unit used to condense steam into liquid which in turn, converts into steam in the  boiler. e.) Stack  –  The smoke generated when coal is burned is filtered through an EP, SCR, and FGD to remove pollutants, and converted into steam, then released into the atmosphere via a 200-meter stack. f.) Transformer  –  It is an electrical device used to increase/decrease the voltages of electricity to transmit electricity efficiently. Mainly, the transmitting voltages are 154 kV, 345 kV, and 765 kV. 3.) Comment on safety features of the plant Dust: Wherever asbestos fibers are used for insulation and other purposes, the possibility of asbestosis among workers due to inhalation of asbestos fibers can not be ruled out. Other morbidities because of exposure to fly ash, including metallic constituents such as lead, arsenic, and mercury might also be present. Due to exposure to other chemical used in different operations of power plant may also be responsible to adversely affect human health. Electrical hazards: Electrical shock, burns from energized equipment and power lines remain inherent hazards of workers in power plant. Accidents and Injuries: At times, the accidents culminate in lost work time, partial disablement and fatality. Bursting of pipe lines and vessels steam pipes due to high pressure, H2 gas lines, acid lines and oil lines are the potential areas of accidents. Chemical Hazards: Different chemicals that are often being used in power plant, such as chlorine, ammonia, fuel oil may be responsible for wide range of acute as well as chronic health impairments. Fire and Explosion: Some areas of fire and explosion hazards are coal handling plant, coal conveyor, fuel oil/lubricating handling and storage areas, transformer/switch yards, boilers, hydrogen generation plant, etc.

4.) Comment on the process control and instrumentation of the plant These were observed during plant visit, as these are basic instruments used in coal fired power  plant Valves and Instruments 01. FV –  Flow Valve 02. V –  Valve 03. FT –  Flow Transmitter 04. FIC –  Flow Indicator and Controller 05. LT –  Level Transmitter 06. LIC –  Level Indicator and Controller 06. pHI –  pH Indicator 07. PI –  Pressure Indicator 08. PIA –  Pressure Indicator and Alarm 09. TT –  Temperature Transmitter 10. TIC –  Temp Indicator & Controller 11. TIA - Temp Indicator and Alarm

5.) As future CHE, what realizations do you have in mind after having visited this plant?

I realize that the coal fired thermal power plant in South Korea implements zero waste, because their wastes are treated and being utilized to become another product. They have waste water treatment plant, air treatment, etc. The plant we visited just shows how developed the country is. 6.) Given a chance, will you work in the plant? In which specific area? Why?

Yes, it’s been my dream to go in South Korea, since I was immersed in their culture for how man y years. Not only this, I want to apply my technical knowledge and communication skills by being a worker in South Korea. I want to work in this plant, most especially in the control and instrumentation process. I want to gain more knowledge on this part. I also want to be an environmental consultant in this plant.