Which tube testing method/s should be used?
| Testing Methods | ECT | RFT | IRIS |
|---|---|---|---|
| Pitting/Corrosion/Erosion/Fretting | YES | YES | YES |
| Non Ferromagnetic Material | YES | NO | YES |
| Ferromagnetic Material | NO | YES | YES |
| Differentiate ID or OD | YES | NO | YES |
| Tube Cleanness | Critical | Less Critical | Polished |
| Detection and Sizing at U-bend | Possible | Impossible | Impossible |
| Detection and Sizing at Baffle | YES | NO | YES |
| Detection and Sizing near Tubesheet | NO | NO | YES |
| Speed | 800 Tube/10 hours | 400 Tube/10 hours | 100 Tube/10 hours |
Why do I need to do a baseline test?
Lore
Ensure the integrity of a new exchanger. Tubes in a “NEW” exchanger are not necessarily defect free. Defect can be introduced during fabrication, installation, or storage.
Provide essential information for the life cycle management of heat exchanger, and failure analysis.
When a used exchanger is put back in service.
Extrusion Defect
Extrusion Defect
Extrusion Defect
Weld Seam Defect
