Vacuum Box Testing

Vacuum Box Testing is a localized leak detection method used to identify surface-breaking defects in welds, particularly on flat or curved surfaces such as tanks, pipelines, and structural components. The method is widely applied in quality control of welded joints where visual inspection alone is not sufficient.
The test involves applying a soapy solution to the weld area and placing a sealed transparent vacuum box over the surface. A vacuum is then created inside the box, and any leaks are identified by the formation of bubbles at defect locations.
This method is highly effective for detecting pinholes, porosity, lack of fusion, and other surface discontinuities that may compromise the integrity of welded joints.
Vacuum Box Testing is commonly used in conjunction with other inspection methods to ensure comprehensive quality control in fabrication and construction projects.
All inspections are performed in accordance with applicable standards, approved Inspection Test Plans (ITPs), and client specifications to ensure accuracy, traceability, and compliance.