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The results were no more cracks indication found.Ĭurrently, the pressure vessel has been in service for almost 10 years and no operational issues found related with SCC. The pad attachment and the cylindrical vessels are note integrally. AE (Acoustic Emission) and TOFD (Time of Flight Diffraction). Lifting lug for horizontal cylindrical pressure vessel. Further thorough inspections to ensure that no more SCC exists on the pressure vessel were performed using precise NDE tools, i.e. Our Enterprise On-premise version also allows for Concurrent Licensing and Network availability. coating application on shell external wall surface, implement new specification of thermal insulation and modify the stiffener ring. DesignCalcs offers single-user and multi-user licensing in both Cloud or On-premise versions. Some improvements were implemented to prevent problem recurrence, i.e. materials resistant to sulfide stress cracking in corrosive petroleum.
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In addition to a 100% non destructive examination (NDE), a pneumatic leak test was conducted to ensure the integrity of the pressure vessel. DESIGN CODE: ASME Boiler and Pressure Vessel Code Section VIII, Division 1 or ASME. Repairs were made by a combination of flush patching and weld built up methods.
![visual vessel design crack visual vessel design crack](https://www.degruyter.com/document/doi/10.1515/eng-2021-0041/asset/graphic/j_eng-2021-0041_fig_001.jpg)
Results of the failure analysis concluded that the pressure vessel failed by chloride induced stress corrosion cracking, due to moisture accumulation and the presence of chlorides at the affected locations in combination with a vessel operating temperature of 99 ☌ to 125 ☌. The cracks mostly occurred above the external vessel stiffening rings. The paper will share the fact and findings, failure analysis, improvement to prevent recurrence, repair methods and inspection.ĭuring the Train E overhaul in May 2007, cracks were observed on the shell exterior of Amine Regenerator pressure vessel. In 2007, Badak LNG experienced this problem on its Amine Regenerator pressure vessel where the shell are insulated and made of Austenitic Stainless Steel Grade 304L. 2.3 Location of the damaged area by visual inspection and evaluation by NDT. An inspection performed from the inside of a pressure vessel using visual and/or NDE.
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