Michael Sofferin - CITGO Lake Charles
Pedro Amador - AZZ
Peter Sanders - Azz
DCU support skirt bulging in combination with skirt-to-vessel attachment degradation can present a challenging repair scenario. This presentation will describe the CITGO Lake Charles skirt replacement scope completed in the fall of 2018. This unique skirt upgrade included several innovative techniques to overcome the existing technical challenges. The presentation will detail a first of a kind repair design and execution strategy created in cooperation between CITGO technical leadership and AZZ Specialty Welding for the successful execution of the repair.
The presentation will cover the use of laser mapping techniques to provide pre-shutdown data that was utilized to determine ideal cut lines for new skirt components as well as a novel approach to field fabricate a new vessel to skirt attachment knuckle to replace damaged material.