Function: X-ray flaw inspection of weld joints for pipelines with diameters 1020 - 1420 mm.

The system is designed to automatic, digital, radio graphical inspection of pipelines, where X-ray source and radiation detector are mounted on moving mechanism, which provided axis-aligning rotation of X-ray source and detector on 360° and longitudinal motion along pipeline. The system shows on display a shadow radiograph of inspected tube in dynamic mode with digital image processing and revealed defects and records this radiograph to permanent computer memory.

Resume: Function of system is based on energy conversion of X-ray radiation, passed through test object, to electric signals whose are digitized by ADC and are recorded with digital signal processing on a remote computer via Ethernet.

X-raying of test object is realized by following way. The system is mounted on a test object. Near to the test object with the system is placed a remote computer to record and process digital radiographs. Acquired radiograph of inspected object is shown on display. The results of inspection are stored on hard disk of computer. The task-level programming package analyses results of inspection.

Main Technical Characteristics:

• Energies of X-ray source 220-320 kV.
• Number of detectors 1024.
• Size of one detector 0.2×2×0.3 mm3.
• Spatial resolution 400 mkm.
• Inspection time 6-10 min.
• Time to mount system (by 2 persons) 30 min.

Advantages: Renunciation of existing limitations of inspection only weld joints or local regions, move to 100% inspection of all pipeline body. Field operation.

1. X-ray source in protective hermetical box. 2. Detector array. 3. Pipeline. 4. Moving mechanism. 5. Defect marker.