Complete replacement of tubes in a chiller condenser installed at KE, Karachi. The scope of work included the removal of existing tubes and plugs, thorough cleaning of all tube-sheet holes, and reworking of tube-sheet grooves. New tubes were inserted and locked, followed by expansion of tube ends at specified torque settings. Final procedures included trimming, flushing of all tube ends, and pressure testing of both shell and tube sides using nitrogen gas to ensure system integrity and performance.
