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May 5, 2017 at 5:55 pm #1740
Amir, Has the ST a dog bone expansion joint? If it has it, inspect dog bone (exhaust expansion joint of ST), we experienced dog bone leaks, we sealing external temporally, and during an outage we fixed by re-tightening. Other possibility is leak in valve of hogger (usually is a big valve), they could not be properly sealed.