The data obtained from an acoustic emission test of a pressure vessel are analyzed to determine the existence of flaws and their locations in the…
Category: In-Service Inspection
Sonic impulses are emitted by a flaw in a ductile material subjected to a gradually increasing applied stress, due to the release of strain energy…
AE was developed to assess the integrity of pressure-containing equipment in the nuclear power industry. Acoustic sensors are attached to the O.D. surface of the…
Most acoustic sensors used for acoustic emission testing of pressure vessels employ piezoelectric ceramic elements that convert the stress waves (i.e., acoustic emissions) propagating through…
In general, the practices that apply to pressure vessels also apply to spheres although the techniques may vary. The tall legs necessary to support spheres…
1. Nozzles Visually inspect gasket faces if opened, ORJ gaskets and bolting material. On vessels with pressure sealed gaskets check for distortion, corrosion, and cleanliness.…
1. Inspection Ports Obtain measurements at corrosion reference points on reactor shell. Inspect for corrosion or scale at these locations. Loose scale on the bottom…
1. External Corrosion Horizontal drums resting on concrete support saddles frequently corrode externally in the area of the saddle. Inspect the water seal at the…
1. Safety Entry of a column can be made only after the approved, signed entry tags are in place on the column. Safety rules in…
1. Support and Foundations Distillation columns are usually supported by a cylindrical skirt which usually s fireproofed inside and outside with concrete, brick, or other…