We have covered important civil works in thermal Power Station. We have discussed major works in civil and structural work . How they have been carried out , the requirement of tools and tackles for the job, Limits and tolerances to be kept for the job. Last 50 episodes will give a total picture of civil and structural work to the newcomers.
Now we will start discussing major equipment of thermal power plant. Power Plant can be divided into a few major groups .
1. Steam Generator or popularly known as Boiler and its auxiliaries.
2. Turbine Generator and auxiliaries .
3. Coal Handling Plant
4. Ash Handling Plant.
5. Switch yard
6. Plant electrical and C&I system.
7. Balance of Plant ( Beside above major packages other packages like water system etc)
We will discuss it all one by one starting with steam generator. However our discussion will be confined to erection and basic design input required. Definition of steam Generator can be obtained from any standard book or from Internet.
Size of steam Generator will be different for different size of unit e.g 60 MW ,120 MW , 210 MW , 250 MW , 300 MW, 500 MW ,600 MW , 660 MW and 800 MW. Mostly these sizes units are available in India . The sizes will be different for same unit if fuels are different in composition. However construction features will be same for all the units.
- Steam generators comprises of following components .
- Structure ( columns , bracing ,beams , angles ,platforms , Ceiling Girders , welded beams ,rolled beams , HSFG nuts and bolts , Gusset Plates etc.
- Pressure Parts ( water wall panel , economiser , super heater Panels , HP piping , Re heater , Suspension , headers , Link tubes , Tie rod etc.
- Ducting - Air and flue gas Pass through it. Plates, beams , pipes etc are required to manufacture the ducts.
- Rotating Machinery - FD ,ID ,PA , SEAL AIR FANS , MILLS and other small rotating equipment.
- Insulation - Glass wool or rock wool , refractories etc.
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Interesting Article. Hoping that you will continue posting an article having a useful information. Steam generator
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