Piping and Pipeline

Piping and Pipeline

Ultrasonic Corrosion Mapping

Ultrasonic corrosion mapping is the preferred method for critical pipelines generally on petrochemical sites or offshore platforms. Ultrasonic mapping provides the owner of a pipe line with a detailed C-Scan image of the inspection surface via the means of a semi- automated scanning system.

Techinco’s RMS2-450 is high-speed remote access ultrasonic corrosion mapping system designed for the circumferential scanning on diameter pipes of more than 152mm (6 inches). Ultrasonic data is recorded from a single crystal immersion transducer and displayed within the software as a colored coded C-Scan map, with differing thicknesses represented as changes in color. Each thickness level is color coded and wall thinning by corrosion or erosion is more readily recognized than by manual inspection.

Ultrasonic Thickness Measurement Inspection

With the advances in technology and reporting capabilities more and more engineers recommends equipment such as the R-Scan Lite and Thetascan which continuously record thickness measurements as the scanning head is moved over the inspection surface. Inspection results can be viewed in real time in the field or recalled for post inspection analysis at a later dat

Magnetic Flux Leakage Pipe Screening

Magnetic flux leakage (MFL) is a corrosion screening technique which is not affected by product flowing through the pipe so surveys can be carried out in-service or out of service. MFL is a quick and easy method for detecting corrosion which should then be backed up by ultrasonic for suspect areas. Techinco’s Pipescan is a cost effective MFL inspection tool which is design to operate on pipes with an outside diameter of 48 mm to 2400 mm.

External Visual Inspection

An external visual inspection is performed to determine the condition of the outside of the piping, insulation system, painting and coating systems, and associated hardware; and to check for signs of misalignment, vibration, and leakage. When corrosion product build up is noted at pipe support contact areas, lifting off such supports may be required for inspection. External inspections shall include surveys for the condition of piping hangers and supports. Instances of cracked or broken hangers, bottoming out of spring supports, support shoes displaced from support members, or other improper restraint conditions shall be reported.

Support legs also shall be checked to confirm that they have not filled with water that is causing external corrosion of the pressure piping or internal corrosion of the support leg.