What does the soap-box test involve?

The soap-box test is a method used to check the integrity of an extrusion weld, especially in geomembrane installations. In this test, soapy water is applied to the weld area and the area is then covered with a vacuum box. The vacuum box creates a suction that draws air through the weld. If there are any leaks or inconsistencies in the weld, the soap solution will bubble up at the point of the leak, making it easy to identify and address the issue. This testing method is effective because it provides a visual indication of where failures may occur, ensuring that the welds are sound and meet necessary performance standards.

Other available options for the test involve alternative methods that do not accurately pinpoint leaks in the same intuitive way as the soap-box test. Thus, the approach of using soapy water with a vacuum box is widely preferred for its ease of use and its ability to yield immediate results regarding the integrity of welds.