The seals on the IWT are expanded radially against the pipe bore mechanically (up to 4″) or hydraulically (6″ and above) to seal off the area to be tested. The annulus created is then filled and vented with the test medium and pressurised up to the required test pressure which can be up to ANSI 1500.
The tools can be set in both horizontal and vertical piping or inclined if required. Testing is achieved in a fraction of the time, and cost, of a full system test, whilst also reducing the provision and disposal costs associated with larger volumes of test medium in full pipelines. Most tools can easily be installed and used by one suitably trained person.