Ghosh, R N and Das, S K and Mitra, A (2008) Damage assessment of process heater tube. In: UNSPECIFIED.
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Abstract
The assessment of damages of service-exposed
process heater tubes was carried out. Formation of chromium
depleted precipitate free zone at the outer surface and inner surface with grain boundary cracks caused major damages to heater tubes. The non-magnetic heater tube in virgin condition turns ferromagnetic during service expose at high temperature due to loss of chromium from solid solution. Early detection of this behaviour is necessary to avoid premature failure of the tube. Detection of ferromagnetic phase in service-exposed tube
appears to be the effective for their damage assessment.
Therefore magnetic techniques can be used for integrity
assessment of the process heater tubes.
| Item Type: | Conference or Workshop Item (UNSPECIFIED) |
|---|---|
| Uncontrolled Keywords: | Damage assessment; Ferro-magnetic; Process heater tube; Magnetic technique |
| Subjects: | Materials Science |
| Divisions: | Material Science and Technology |
| Depositing User: | Users 5 not found. |
| Date Deposited: | 22 Mar 2011 11:08 |
| Last Modified: | 13 Jan 2012 06:22 |
| URI: | http://eprints.nmlindia.org/id/eprint/2691 |
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