WARNING:
JavaScript is turned OFF. None of the links on this concept map will
work until it is reactivated.
If you need help turning JavaScript On, click here.
This Concept Map, created with IHMC CmapTools, has information related to: Node_18e_Procedure to burn gas - IV, Bnr Operation actions 49. This happens because the increased gas burn is tending to raise Boiler Drum Pressures, BOG Ctrls actions 51. Set to AUTO and note the set point is now in kg/s (not %). Increase the set-point to say 0.5 kg/s (before the gas manifold pressure has a chance to fall and we loose the gas burners), BOG Ctrls actions 52. Note a manifold gas flow rate of about 0.5 kg/s corresponds to 0.25 kg/s per burner., Procedures to burn gas IV Simulator Groups Instructor LNG Tanks, Bnr Operation actions 48. The FG control valves can be seen to open (to about say 30%) - note that the FO control valves close in reducing FO flow - a natural effect from the cascaded FO PID controllers., BOG Ctrls actions 51. Set to AUTO and note the set point is now in kg/s (not %). Increase the set-point to say 0.5 kg/s (before the gas manifold pressure has a chance to fall and we loose the gas burners), Procedures to burn gas IV Simulator Groups Bnr Operation, BOG Ctrls actions 47. Open up both the controllers to say 30%, Bnr Operation actions 50. This results in the Plant Master( FO Controller) reducing its output to the Master Controllers (which are also FO controllers) and hence reducing the output of the Fuel and Air (FO Controllers), Procedures to burn gas IV Simulator Groups BOG Ctrls, Procedures to burn gas IV Simulator Groups END OF PROCEDURES TO BURN GAS, Instructor LNG Tanks actions 53.Observe the gas flow rate is approximately 0.15%/day which is approximately the boil off required for zero pressure rise in the tanks, Procedures to burn gas IV Simulator Groups BOG Ctrls