Recent content by Samsoon

thanks, i'm not a mechanic, what i've learn faulty check valve can be due to: oxydation / rust preventing the flap to fully close or stuck it open also, some check valve need to be mounted only in a specific direction, in order to function poperly (like heads up or only verticaly) this type...

can you send your condensate system P&ID ? it doesn't seem strange to me that both mechanical seals are feed when a condensate pump is running as the condenser is under vacuum, sealing must be provided to the running and stand by pump, to avoid air getting sucked in the circuit at my plant...

I will look to get more detail this night, for now what i could say is: crt is calculated with parameter like air inlet temp, compressor pressure, gas temp etc... it estimate what's the setpoint for which the combustion temp should be at any given load I believe it protects turbine components...

Sorry, mix up crt and cpr crt stand for combustion reference temperature

Hi, the crt will increase as load increases It's directly link to cpd value With very good air condition, i've already experienced a 22.2bar cpd (319psi) @ base load so crt should be around 21 or so

Do you observe different vibration level, when turbine is started cold or hot ?

??? I didn't want to contradict you And I'm very interested into reading your post, but was unsuccesfull to find it for now There are in fact two points, that I confused in my first question: First, is the LCI able to rotate the generator rotor from 0 rpm Second, does the logic let you do so

thanks for you reply, i didn't found your post yet hi, thanks for your reply Yes, I've finally found that we need at least 1.5rpm in order to activate the LCI sequence It wasn't easy because this permissive is in gas turbine controllers, where orders for exciter and lci are given what a mess...

thanks for your replies unfortunately, I could not "try to see" for now The LCI controler doesn't send a start signal to the turning gear logic, it sends a disengage signal for the swiveling gear, in order to not lead the turning gear motor and reductor to extreme speed. I don't understand the...

as a trained operator, i've seen alot of trip and runback by combustion trouble which were initiated by unpoperly mounted TTXD or dying one that's why my guess was faulty TTXD at first and i'm curious about seeing the TTXD trend when trip happend Sequence of event, will be stated as class SOE...

thanks for the report what looks strange to me, is that the spread value doesn't swing and looks stable and with good value when the limit rise but those chart doesn't tell about live value Is this common to you to have exciter trip and 52G breaker trip on start up ?

Hi sir, What's your turbine usual spread value? Should be around 20°C or so are all the TTXD healthy and within the same value with each other? On my turbine TTXD drifting at low load happen, because : TTXD is not correctly mounted and fully inserted, and reduced exhaust flow make it difficult...

9HA