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Showing posts from November, 2019

How to do Turbine Vacuum Killing ?

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November 16, 2019

Drum Pressure Vs Silica Chart

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November 15, 2019

Turbine EHTC Governing Characteristics

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November 15, 2019

Wagon Tippler क्या है? Coal Handling Plant |CHP

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November 15, 2019

Ash Dyke | Thermal Power Plant

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November 15, 2019

Pollutants | Types | Particulate Matter | VOCs | SPM | NOx | SOx | Smog ...

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November 15, 2019

Selective Non-Catalytic Reduction | SNCR | NOx Emission control | Therma...

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November 15, 2019

TDBFP Rolling | NTPC | BHEL | 500 MW | Rolling | Steps | Pump | Turbine |

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November 15, 2019

Deaerator l How it works l Thermal Plant l Principle Explained

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November 15, 2019

Throttle Governing Vs Cut-Off Governing of Turbine | which one is Better?

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November 14, 2019

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HP & LP Bypass Operation and Protection

HP & LP Bypass Operation and Protection Purpose Boiler operation independent of the turbine Minimum steam flow through SH & RH tubes during start-ups, low load operation & sudden unloading of unit Utilized or building up of steam parameters Avoiding the boiler trip on Reheat protection No steam flow through Boiler steam tubes will lead to starvation & thereby overheating and lead to premature failure of tubes The capacity of HPLP bypass is 60% of full load turbine steam flow Reheat Protection: RH protection (delay=10 sec) will act if TURBINE HP V/V & HPBP CLOSED [ either turbine HP stop v/v or HP CV in both HP line closed ] & [ both HP BP <2%] OR TURBINE IP V/V & LP BP closed [ Either IP stop v/v or IP CV v/v in both IP line closed ] & [ Either LP BP stop v/v or LP BP C/V in both LP line is closed] OR Generator ckt bkr open & [both HP BP closed OR both LP BP closed HPBP Oil Supply Unit Interlocks: Pum

Generator Air Tightness Test

December 25, 2017

Generator Air Tightness Test Period Of Test= 24 Hrs without a Break Air Pressure Drop (Allowed in 24 Hrs) : <=0.15 ksc Air Test Pressure = 3.5 ksc All LLDs Drain Closed. Ensure Seal Oil system in Operation Seal Oil DP >1.5 ksc AS Seal Oil Pr>4.5 ksc, start H2S Seal Oil system H2 Cooler Isolated PW in Winding is in filled condition, Winding Isolated. PW also kept Isolated. PW Tank at Atmospheric Pressure Ensure availability of Instrument air and Bleed Out moisture from it by keeping it open till Connect flexible air hose with the gas plant through the coupling and ensure no air leakage is there The filling is to be done by opening the valves in the normal H2 filling line where as the valve from H2 rack side will remain closed. Once the air filling is commenced the test record data sheet The air valve is to be opened full. While pressurising the LLD / Seal oil DP / Seal oil parameters are to be recorded as per the enclosed sheet. The generator casing i

Turbine and TDBFP Overspeed & Oil Injection Test Procedure

December 10, 2019

Oil Injection of Main Turbine: Press Test Valve Turn Test Hand-wheel Anticlockwise slowly ( to develop Test Oil) Note Turbine Speed, Test Oil Pressure, Primary Oil Pressure when Bolts Operate(Aux Trip Oil becomes 0) Turn Test Hand-wheel Clockwise slowly (Test Oil pressure becomes 0)

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