What are the various materials used in power plants construction???
1-Low Carbon Steel IS 2062, IS 1239: For structural steels like plates, angles, channels, beams, platform, walkways & LP steam lines etc.
1-Low Carbon Steel IS 2062, IS 1239: For structural steels like plates, angles, channels, beams, platform, walkways & LP steam lines etc.
2-High
Carbon Steel SA 106 Gr. B/C, SA210 Gr, B/C, SA 516 Gr. 70: For Boiler pressure parts like water wall panels,
headers, economiser coils, down comers, feed water lines, steam drum etc.
3-Alloy
Steel SA 213 Gr. T11, T22, T91 and SA 335 P11/P22: Super heater coils and main steam pipe lines.
4-Cast
Iron: Travelling grate materials,
pulley, coupling etc.
5-Copper:
Air conditioning cooling lines.
6-Brass:
Surface condenser and oil cooler
tubes.
7-Stain
Less Steel SS 304, 316, 410 etc: Ejector
tubes, surface condenser/oil cooler tubes, control valve stems & valve trim materials
8-Plastics: PVC pipe lines, valves, tanks etc.
9-Steam Turbine
- ESV: Cast alloy steel
- HP Casing: Cast alloy steel
- LP Casing: Carbon steel
- Rotor: Forged chromium, molybdenum and vanadium alloy steel
- Blades: Alloy steel
- Bearings: Liner Babbitt or white metals
- Labyrinth: Phosphorous, lead and aluminum
What welding electrodes are generally used in power plants various welding works???
Sl No.
|
Particular Material and Grade
|
Type of Welding
|
Welding Electrodes Used
|
Application
|
1
|
Low
carbon steel IS 2062/1239
|
Arc
|
E 6013
|
General welding works
like structures, non IBR pipe lines plates etc.
|
2
|
Carbon steels SA 106
Gr.B/C, SA 210 Gr.A/C, SA 516 Gr.70, SA 234, etc.
|
TIG
Arc
|
ER 70 S2
E 7018
|
Boiler water wall
panels, economizer coils, evaporator headers, process steam lines etc.
|
3
|
Low
alloy steel SA 213/SA-335 Gr.T11/P11
|
TIG
Arc
|
ER 80S B2
E 8018 B2
|
Primary super heater
coils, headers, soot blower lines etc.
|
4
|
High alloy steel SA
213/SA-335 Gr.T22/P22 and T91/P91
|
TIG
Arc
|
ER 90S B3/90S B9
E 9018 B3
|
Secondary and radiant
super heater coils, main steam line etc.
|
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