Reduce complications with gas turbine rotors and controls, protect uptime, see safer turbine inspection, and more, with:
Our upgrade packages for LM2500, TM2500, and LM6000 gas turbines require modifications to their hydraulic starter systems and control system logic, also integrating:
For the LM6000, the hydraulic rectifier block is added to the start system to enable slow roll and soft start operating modes. You’ll be able to automatically check for a locked rotor without having to check manually.
The LM/TM2500 adds a DC motor to the gearbox for automatic rotor checking, and “borescope inspection mode” lets operators rotate motors from an HMI screen.
Slow roll mode allows the DC motor to engage after certain emergency shutdown conditions and to rotate the high-pressure rotor at 80–120 RPM. This gives the operator time to address the trip condition and restore the unit to full power. The rotation provides uniform cooling to the rotor, letting the hydraulic start system re-engage the starter and re-start the gas turbine after the issue has been cleared.
Soft start mode allows for periodic restart attempts during the lockout period, when it’s not advisable to attempt an automatic slow roll. A “soft start” automatically performs checks to determine if the gas turbine rotor is locked. If other requirements are met, the turbine follows a modified start cycle to achieve full power. If the rotor is locked in soft start mode, soft starts can be attempted every 15 minutes, as long as the hydraulic start system is available.
The borescope inspection mode allows the inspector to rotate the gas turbine engine from the HMI screen or the jog pendant depending on options chosen.