Contents of heat exchanger inspection and maintenance
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Our unit is carrying out maintenance work on the equipment, and it is necessary to service the heat exchangers. What tasks need to be carried out? What are the specific requirements?
1. The tube bundle of heat exchangers that have reached their service life needs to be replaced. The typical service life of a heat exchanger tube bundle is 3 years. 2. Heat exchangers that experience tube bundle leakage or perforation during the production process require their tube bundles to be replaced. 3. Heat exchangers in normal use require core extraction for cleaning. 4. After completing the above 3 tasks, the heat exchanger that has been modified must be pressure-tested. The old tube bundle is pressurized to 1.25 times the operating pressure, while the new tube bundle is pressurized to 1.5 times the operating pressure. 5. A more advanced approach is to use a cleaning agent for online cleaning. That’s about it.
Core extraction, cleaning, inspection, hydrostatic test, routine procedures. Another one is bundle replacement.
It is better to refer to the procedures – the SHS 01009 Procedure for Maintenance and Overhaul of Shell-and-Tube Heat Exchangers； SHS 04523 Maintenance and Repair Procedures for Tubular Heat Exchangers ； SHS 04521 Maintenance and Repair Procedures for Plate Heat Exchangers ； SHS 10008 Maintenance and Repair Procedures for Plate-and-fin Heat Exchangers ； SHS 04522 Air Cooler Maintenance and Repair Procedures ； SHS 03051 Maintenance and Repair Procedures for High-Pressure Casing Heat Exchangers ； SHS 03010 Maintenance and Repair Procedures for Ultra-High Pressure Shell-and-Tube Heat Exchangers ； SH/T 3532 Specifications for Construction and Acceptance of Heat Exchanger Equipment in Petrochemical Industries ；