A trayed column at an operating facility suffered a loss of containment incident and was shut down. The damage to the steel is thought to have been caused by loose tray components which rattled around and eventually wore through the shell. An initial repair plan involving welded repairs was proposed. This plan would entail a field post weld heat treat (PWHT) due to the process environment of the vessel. Upon further developing the PWHT plan it was determined that this approach was costly and would have excessive lost profit opportunity (LPO) due to the time it would take to execute and the criticality of this vessel to plant operations. Instead, a second approach involving no field welding was devised, vetted, fabricated, and implemented. The facility was able to restart the process, saving several days of production. A permanent repair or replacement will be planned and implemented at the next planned shutdown.
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ASME 2015 Pressure Vessels and Piping Conference
July 19–23, 2015
Boston, Massachusetts, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-5699-4
PROCEEDINGS PAPER
Innovative Repair of a Holed Through Pressure Vessel
Jaan Taagepera,
Jaan Taagepera
Chevron Energy Technology Co., Richmond, CA
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Barry Sparkman,
Barry Sparkman
Chevron North America, Midland, TX
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Ryan Ostrikoff
Ryan Ostrikoff
Chevron North America, Midland, TX
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Jaan Taagepera
Chevron Energy Technology Co., Richmond, CA
Barry Sparkman
Chevron North America, Midland, TX
Ryan Ostrikoff
Chevron North America, Midland, TX
Paper No:
PVP2015-45247, V06AT06A068; 5 pages
Published Online:
November 19, 2015
Citation
Taagepera, J, Sparkman, B, & Ostrikoff, R. "Innovative Repair of a Holed Through Pressure Vessel." Proceedings of the ASME 2015 Pressure Vessels and Piping Conference. Volume 6A: Materials and Fabrication. Boston, Massachusetts, USA. July 19–23, 2015. V06AT06A068. ASME. https://doi.org/10.1115/PVP2015-45247
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