if HP LP Bypass opened in running condition then what happen
in 210 MW thermal plant
Answer Posted / k. v. vidyanandan
Consequences will be different with different loading conditions of the unit.
Whenever HPBP opens, immediately LP bypass will also open due to the increase in HRH pressure. This may lead to a reduction in condenser vacuum (i.e. increase in condenser pressure). If the condenser pressure goes beyond the set value, turbine will trip on Low Vacuum Protection. This may possibly happen if the unit was running at full load.
If HP BP opens at part load, still LP BP will open, however, chances of vacuum crossing the safe limit is less and therefore unit may survive. But, due to the opening of HP BP, MS pressure will fall, load will reduce and there will be drop in drum level. Operator will get adequate time to take corrective action in this case.
Is This Answer Correct ? | 10 Yes | 0 No |
Post New Answer View All Answers
what is the difference between anf & centrifuge?
What is the ratio of specific heat of air?
what is rolling margin?( from view of machining process ) explain briefly
What is extrued aluminum?
Who built the trans alaska pipelene?
Where pneumatic system is used?
When did you decide to become and mechanical engineer and why?
what is the difference between cold and hot spark plug? mention their place of use with justification?
what is the diffrence betwen primary pumps and secondary pumps in aircoditioning field
Where do you work in engineering company?
Steps In starting boilers.
plz send me interview questions for POWER GENERATING CORPORATION LIMITED. my mail id is "ajaymits2004@yahoo.com"
what is the difference between under vacuum & under pressure boiling?
What is the temperature at which diesel normally boils?
What is the use of center punch?