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Successful UT Examination of a Modified Storage Tank Shell-to-Bottom Weld

As part of a 25-year non-intrusive inspection strategy for a newly constructed API 620 ammonia storage tank the modified shell-to-bottom weld was recommended to be examined using an UT technique. The modification of this corner weld comprised a novel design of a double-sided full penetration fillet weld specified to exceed the tank minimum design code requirements. This paper discusses the weld code requirements the weld modification details the procedure development for weld examination as well as the successful application of the examination technique using UT phased-array; including the examination results evaluation which were supported by FEA calculations. Consideration of the work presented herein would contribute to improved design and quality of storage tank shell-to-bottom fillet welds.

Product Number: 51319-13032-SG
Author: Juan Ruiz Rico
Publication Date: 2019
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$20.00
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Product Number: 51313-02744-SG
ISBN: 02744 2013 CP
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