Description
BIDI pig for wye tee fitting is designed by using 2 sections and flexible joints to allow bi-directional travelling through the pipeline without removing the pig from the line. It is designed with sealing discs and guiding discs on each section to ensure stable movement and effective sealing performance while passing through wye tee configurations. This tool can travel in both forward and reverse directions along the pipeline axis without bypassing the wye tees. A bend plate is installed in the middle of the front section to inspect the minimum bend in the pipeline and a gauge plate is installed on the rear side of the front section to inspect the reduction/min ID of the pipeline. The transmitter is installed in the pig to track the location during operation.
BIDI pig is used to analyze below in the pipeline
· Minimum bend in the pipeline.
· Reduction/obstacle in the pipeline.
· Bi-directional cleaning and dewatering operation.
· The valve is partially open in the pipeline.
· Dent or ovality in the pipeline.
· Hot tapping/weld penetration obstruction in the pipeline.
