I have an issue with the bolt hole orientation of a nozzle flange. Construction has not taken care to straddle the bolt hole orientation with the vertical centerlines of the tank. The mixer flange when tried to fit with the tank nozzle flange, the bolt holes were offset by 20 mm. Now we want to cut the flange, rotate the re fit-up the flange and weld it. I want to know the acceptance clauses in API-650 & API-653 to support this to get client approval.
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