KAOTHEEM APPLIES PA TO INSPECT
- Welds and weld overlays, piping, pressure vessels, clad material, storage tanks and structural steel
- Raised face flanges for damage on the ID bore and sealing face without having to disassemble them. This technique can be used during shutdowns, or on operating flanges
- Complex geometries with a single probe
ADVANTAGES
- High degree of repeatability. Position and size data for every flaw can be compared for repeat scans of the same area to track flaw growth or corrosion rates both generally and for individual pits
- Sound beams of many angles can be generated sequentially, inspecting a large portion of the component’s cross-section. Electronic adjustment of beam focus and angle, and sweeping of UT beam through the entire weld volume
- The ultrasonic beam may be both steered (change of angle), focused and scanned without moving the probe.
- Portable, battery operated testing device
- Inspection can be performed on in-service equipment
- Faster inspections
- Can be combined with TOFD scan
LIMITATIONS
- Probes are often larger than those used for conventional UT
- Higher temperature probes are in development
HydroFORM Phased Array scanning
- Combines a phased array probe with water from the probe to the vessel surface to allow scanning of surfaces unsuitable for contact probes
- Is designed for internal and external corrosion-erosion mapping
- Allows the probe to scan rough and uneven surfaces while maintaining consistent coupling of the ultrasonic beam through the water column
- Works with semi-automated and full mechanized scanners or it can be used manually to produce encoded line scans
