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This Concept Map, created with IHMC CmapTools, has information related to: Node_18c_Procedure to burn gas - II, FG Bnr Mgt actions 19. A master gas valve trip due to N2 purge comes up as part of the purging sequence - this is normal., FG Bnr Mgt actions Note: The Main Vents are left open at the end of the purge., HDR/BNR Purge actions 26. Watch the Purge Sequence., FG Bnr Mgt actions 17. The Main line purge sequence is as follows:, Procedures to burn gas II Simulator Groups HDR/BNR Purge, Procedures to burn gas II Simulator Groups Continued to other Simulator Groups in Procedure III, FG Bnr Mgt actions 16. Main line Purge - Click MAIN LINE "N2 Purge" to initiate and run the Main Line Purge sequence., HDR/BNR Purge actions 25. Click Stbd and Port "HDR/BNR N2 Purge" to initiate and run the HDR/BNR Purge sequence. This runs a purge sequence on the STBD Header (if required) followed by a purge on burners (if required)., HDR/BNR Purge actions 29. Close the Port Header Vent (Click HDR Vent "Close"), FG Bnr Mgt actions 22. Wait for the purge sequence to complete., FG Bnr Mgt actions 24. These will automatically shut when we introduce gas., Procedures to burn gas II Simulator Groups FG Bnr Mgt, Procedures to burn gas II Simulator Groups Purge Permissives, Procedures to burn gas II Simulator Groups FG Bnr Mgt, HDR/BNR Purge actions 28. Close the Stbd Header Vent (Click HDR Vent "Close"), FG Bnr Mgt actions 21. The Main line darkens to show the expulsion of the gas in the Main line., FG Bnr Mgt actions 18. The Main line header vent valves will open automatically, FG Bnr Mgt actions 20. The Main line purge valve will open automatically., FG Bnr Mgt actions 23. The purge is complete when the Main Line N2 purge light extinguishes., FG Bnr Mgt actions 14. Open the Nitrogen supply valve