Estudo comparativo das técnicas de ensaios não destrutivos de radiografia industrial e ultrassom phased array na análise de juntas soldadas de caldeiras na indústria de papel e celulose

Abstract

In the pulp and paper industry, one of the vital parts of the process is the Recovery Boiler, which as its name suggests, recovers the cooking chemicals from the wood chips by burning them, generating vapors that are converted into energy. The manufacturing of boiler equipment is regulated by design codes, which require that many welded joints be examined through non-destructive testing, including industrial radiography, which is sometimes being replaced by the Phased Array Ultrasound technique. The objective of this study was to compare the two techniques for specific situations, producing specimens, simulating defect situations and performing the mentioned tests, só that the results could be compared and it would be possible to conclude that for the porosities generated in one of the specimens, the Industrial Radiography presented better results, for the tungsten inclusions generated, both tests were able to perform satisfactorily, the same occurs for the lack of penetration induced in one of the specimens.