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In Siemens Gas Turbine (SGT5 4000f) Design, the loss of a HVAC package will initiate trip to Gas Turbine. We have 6 (5 Running + 1 Stand-by) numbers of HVAC packages each has 3 flow switches (2 out of 3 Logic) to monitor the proper ventilation flow to the Building. This will ensure small positive pressure inside the building. The present logic is, when Ignition gas or Fuel gas is present inside the building (Based on valve position feedback) this will generate ventilation system required signal. Loss of one HVAC package (only 4 running) with the ventilation required signal will initiate trip to Gas Turbine within 10secs and also will vent the gas respective to Zero pressure (Same as fire protection). I couldn’t imagine the significance of ventilation system here as the Gas Turbine will not dissipate more heat that may leads to danger. Do we need to have this much stringent controls for ventilation system?
Kindly explain the importance.
Thank you.
Kindly explain the importance.
Thank you.