Heat Exchanger Maintenance

Industrial Shell & Tube Heat Exchanger Maintenance and Retubing Services: Regain Thermal Efficiency

Heat exchangers (shell & tube heat exchangers), which maintain the thermal balance of processes in petrochemical, refinery, power, and chemical plants, are exposed to fouling, corrosion, erosion, and thermal fatigue over time. This condition decreases the heat transfer coefficient, thereby increasing energy costs and bringing about the risk of unplanned downtime. At DRS Makina, comprehensive maintenance, repair, and Retubing services are provided in accordance with international standards (TEMA, ASME) to restore the performance of the shell & tube heat exchangers—the heart of your facility—to their initial efficiency.

Comprehensive In-Workshop Maintenance and Retubing Corroded or punctured tube bundles are safely dismantled from your facility and transferred to the fully equipped DRS Makina maintenance workshops. Old tubes are carefully extracted by our expert technicians without damaging the existing tubesheet; subsequently, the insertion and tube expansion / orbital welding processes of new stainless steel, carbon steel, or special alloy tubes required by the project are meticulously executed. Through these operations, the service life of your shell & tube heat exchanger is extended while saving the cost of purchasing new equipment.

Precision Leak Testing and Quality Control The zero-leakage principle is essential in heavy industry processes. Shell & tube heat exchangers, upon completion of maintenance or retubing, are subjected to rigorous tests by our quality control experts prior to commissioning. Hydrostatic and pneumatic leak tests are performed above the operating pressure utilizing special blinding apparatuses and pressure gauges. The tube-to-tubesheet joints are examined with millimetric precision, ensuring your process safety is certified according to international norms.

Fast Delivery and Minimum Downtime In industrial facilities, time equates to production and profitability. Maintenance operations are executed by DRS Makina through 7/24 shift systems during your planned turnaround periods. Shell & tube heat exchanger tube bundles, having completed workshop tests and insulation processes, are specially packaged against transportation damage, dispatched to your site as swiftly as possible via high-capacity transport vehicles and crane operations, and subsequently integrated into the system.