On site we have differential pressure transmitters used to measure drum level, at pressures of 110 bar, 25 bar and 4 bar respectively. the sensing legs of the DP trx have demineralized water. In the winter, the trace heating is not enough so when there is no generation the water lines get frost...
On site we have a 2 MVA oil filled transformer 6.3kV/0.42kV. There is a small leak form the bushing base connection to the transformer tank. We want to replace the gasket of the bushing. Is there any procedure for this kind of activity? I guess that the bushing needs to be lifted somehow, take...
On site we have a GE 9FA turbine. From AS BUILT manuals, GER 3620, there is a table for Turning. These are the generic operational guidelines for the time that the GT should be at turning after a shutdown or a trip and then restarted for normal operation. Verbally we also have been informed that...
In our power plant we are in the process to reduce the active power imbalance between grid market set point and actual active power production. The main reasons for these imbalances are the droop characteristic. 4 % droop means that an increase of frequency 4% will mean increase a n increase of...
GE Mark VI controllers have among others the logic for governor droop speed control. This is the operation mode other than isochronous (island) or temperature control (base load). On our site droop is set at 4%. This means that GT will change 100% its load upon a grid frequency change of 4%. Can...
