A
Hello ,
In a MHI Steam turbine, the manufacture operation manual states that the turbine has a TTV and four dump solenoid valves for control oil draining. however the customer provided a starting procedure as all starting permissive must be satisfied includes the SOV which responsible for control oil drain to be closed and the TTV valve in close position. after that the operator will press a PB to open the TTV. my point here that if the SOVs valves are closed, the control oil header pressure will have a sufficient oil header pressure in which accordingly the TTV will automatically open.
Could anyone please advise if there is any other scenario to meet the customer requirements.
In a MHI Steam turbine, the manufacture operation manual states that the turbine has a TTV and four dump solenoid valves for control oil draining. however the customer provided a starting procedure as all starting permissive must be satisfied includes the SOV which responsible for control oil drain to be closed and the TTV valve in close position. after that the operator will press a PB to open the TTV. my point here that if the SOVs valves are closed, the control oil header pressure will have a sufficient oil header pressure in which accordingly the TTV will automatically open.
Could anyone please advise if there is any other scenario to meet the customer requirements.