Minimizing the risk of operating a pipeline requires ‘inside’ knowledge about the structural integrity of the inner pipe wall. That’s why ROSEN has developed the most sensitive metal-loss inspection tool available today, based on Magnetic Flux Leakage (MFL). This technology is designed to detect pipe wall irregularities at the earliest possible stage, recognize their nature and size their geometry accurately. MFL tools can operate in a variety of mediums, including water, gas, crude products and dual phase products.

ROSEN is a company with thousands of kilometers of experience behind it, gained from inspecting pipelines in countries all over the world. We offer a wide variety of highly sensitive tools designed to withstand the most adverse conditions encountered during an inline inspection pipe survey. Additionally, every ROSEN tool is loaded with features designed to provide the most accurate results.

State of the art multiple spring-supported magnets are mounted on the central tool body to achieve the required magnetization level in both straight pipe and bends. The magnets are used to magnetize the pipe wall to saturation level in the axial direction. A high magnetization level is supplied that differentiates corrosion from other pipeline features like hot sports or stress and strain variations. In addition, ROSEN tools use all three axis of the magnetic field, Axial, Radial and Transverse (ART) to provide the highest possible accuracy.

Under normal conditions (no flaws) the magnetic flux can travel undisturbed through the pipeline. In the presence of internal and external metal loss, the flux ‘leaks’ out of the pipeline. This leakage is recorded by the hall-effect sensors, oriented within the magnetic field and providing coverage of the entire circumference. The character, amplitude and various other measurements are used to determine the depth, length and width of the recorded metal loss.

ROSEN provides the most compact tools on the market, especially for larger diameter applications (16" to 56"). The compact and rugged design allows for easier launching and receiving as well as the ability to utilize existing traps that might otherwise have to be modified. Tools with the capability of safely negotiating 1.5D bends are available for almost all sizes.