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Drum manufacturing
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- 2. Functions of aBoiler Drum.. To provide necessary space for steam-water separation To house the equipment's, needed for steam purification Acts as a storage vessel and always maintains a water level and supplies the same according to variation of load
- 3. Standard Drums Manufactured CapacityPlate thickness (in mm) Length of drum (in Meters) WT (in Tons) 150 MW 145,115 13.6 87.3 250 MW 140,175 16.2 133.2 500 MW 160,190 22 214.3 600 MW 160,190 28 247.5 FR9FA 140 18 157.5
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- 5. DRUM PLATE SUPPLIERS SA 299 (C-0.28, Mn- 0.9, Si-0.15, P-0.02, S-0.01, Cr- 0.25,Ni+Mo+Cu+V+Nb- 0.8) Dillinger – Germany Salzgitter - Germany Reiner Brach- Germany Indu Steel – France SA 515 Gr 70(C-0.35, Mn- 1.2, P-0.03, S-0.03, Si-0.15) SAIL, INDIA
- 6. 600MW: FOURSHELLCONFIG SHELL: 1 )160 X 3960 X 8295 - 41,257.339 Kg - 2 NO 2) 160 X 3960 X 6400 - 31,832.064 Kg – 2 NO 3) 190 X 2840 X 8295 - 35,136.459 Kg – 2 NO 4) 190 X 2840 X 6400 - 27,109.504 Kg – 2 NO DISHED END : 185 X 3000 X 3000 - 13,069.800 Kg
- 7. 500MW:TWOSHELLCONFIG: Shell : 1) 160X 3960 X 11350 - 56,452 Kg - 2 NO 2) 190 X 2840 X 11350 - 48,077.1 Kg – 2 NO Dished End: 185 X 3000 X 3000 - 13,069.800 Kg
- 8. 500MW- THREESHELLCONFIG: SHELL- 1) 160X 3960 X 8295 - 41,257.339 Kg – 2 NO 2) 160 X 3960 X 6400 - 31,832.064 Kg – 1 NO 3) 190 X 2840 X 8295 - 35,136.459 Kg – 2 NO 4) 190 X 2840 X 6400 - 27,109.504 Kg – 1 NO DISHED END – 185 X 3000 X 3000 - 13,069.800 Kg – 2 NO
- 9. 250 MW –TWOSHELL CONFIG: SHELL – 1) 140 X 3300 X 7990 - 28,977.333Kg - 2 NO 2) 175 X 3365 X 7990 - 36,922.803 Kg – 2 NO DISHED END – 165 X 2850 X 2850 - 10,520.262 Kg
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- 11. STEPSREQUIRESDFOR PRESSINGTHE PLATES Plates are loaded into furnace and heated to temperature ranging from 870-900 deg C in case of SA299 and 870-900 deg C in case of SA515 Gr70 Soaking time=1.25mins/mm ROH for hot working/normalizing: For t <= 100mm, 200deg C/hr. For t > 100mm, 150deg C/hr. QC checks the soaking time and temperature of heat treatment cycle.
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- 18. LONG SEAMFIT UPOF TWOHALF SHELLS
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- 24. NDE Techniques Employed Radiography – LS & CS joints Ultra Sonic Testing – Raw material plate, All full throat nozzles (DC, FN & SV nozzles) and Lifting lug MPI – LS & CS Joints and all stubs of shells and dished ends LPI – Dished end stub weldment
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- 29. SAFETY VALVE NOZZLEWELDING
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- 33. RESISTANCE SEAM WELDING Resistanceseam welding is a process that produces a weld at the faying surfaces of two similar metals. The seam may be a butt joint or an overlap joint and is usually an automated process. ... Like spot welding, seam welding relies on two electrodes, usually made from copper, to apply pressure and current.
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- 38. Heat Treatment processesinvolved Normalizing – U shells, Door plates, SV nozzles, Lifting lugs Inter-Stage Stress Relieving- After DC & FN welding Stress Relieving
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- 41. Hydro test pressure CapacityWorking pressure(Kg/Cm2) Test Pressure (Kg/ Cm2) 150 MW 164 246 250 MW 182 273.25 500 MW 210 315 600 MW 210 315
- 42. FINISHEDDRUM– READY FORDESPATCH
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- 44. DRUM LIFTING ATSITE
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