Pipeline Integrity Management of CSCC using multiple ILI technologies

Pipeline pigging and integrity management conference, Houston, February 2021

This paper is the continuation of a 3 year-long study in the use of magnetic based ultra-high sampling density in-line inspection (ILI) systems (up to 2,000 samples per square inch) to detect and size circumferential stress corrosion cracking (CSCC). The objective of the study is to enable a shift from the CSCC direct assessment approach to diagnostics by an ILI measurement system.

This phase of the study focuses on the detection of CSCC by multiple ILI systems that integrate axial and circumferential magnetic flux leakage (AMFL and CMFL) along with internal depth detection sensor arrays (IDD), a high precision geometry measurement unit (HP-GMU) and inertial mapping data (IMU).

To date a total of seven line segments have now been inspected for CSCC collecting a total amount of data exceeding 1 TB. This paper focuses on the five line segments inspected for Xcel Energy and the results from two other operators have been include in our data base. Individual line segments had collected data sizes that often exceeded 200 GB. This also required the development of detection and sizing algorithms along with data analysis processes that can categorize and prioritize relevant CSCC. This process was performed to differentiate CSCC amongst the hundreds of thousands of detected magnetic anomalies in any given line.

Included in this study are the CSCC inspection results from over 200 miles of natural gas pipelines in NPS 6”, 8” and 10” segments. These results are utilized to review susceptibility factors for CSCC and discuss best practices for excavation and inspection of CSCC anomalies. Field non-destructive examination (NDE) and metallurgical analysis from identified anomalies have been used to baseline the system’s probability of detection (POD) and probability of identification (POI) of critical and subcritical CSCC.

For a copy of this paper please contact us at   at info@novitechinc.com

Novitech’s Modular Micron ILI Technology

With our Patented Micron ILI Technology, Novitech has Ten standard tool configurations from Version 1 (Geometry), to Version 10 (A&CMFL with Geometry, IDD and IMU) sensor systems. 

All versions are on site configurable in as little as just one hour.

For more information please contact us directly at info@novitechinc.com

Novitech’s 16″ Micron CMFL Tool

Novitech Displays it new 16″ CMFL tool at PPIM in Houston. This state of the art CMFL tool has 1152 primary sensors and can used with AMFL, Geometry, IDD and IMU modules.

The version 10 of this 16″ tool brings the total number of sensors on board to 1,984. All these systems together can reach a sampling density up to 2,000 per square inch.

For more information pleasecontact us directly at info@novitechinc.com

Novitech Launches its New 10″ Version 10 Tool

Novitech Launches its new 10NPS Version 10 Micron ILI tool.

This tool has a total of 1,288 sensors that include AMFL + CMFL+ Geometry and IDD.

With an industry leading combined sampling density of over 2,000 per square inch.

Detection and sizing of very small pin holes and many different forms of cracking in a single run is now possible.

Novitech and Xcel Energy Present a Paper on CSCC

Novitech and Xcel Energy present a paper on the Detection and Sizing of Circumferentially Oriented Stress Corrosion Cracking (CSCC) Using Axially Oriented Magnetic Flux Leakage Inspection at PPIM in Houston.

This paper was based 6” pull testing on pipe know to have CSCC. 

For a copy of this paper please contact us at   at info@novitechinc.com

Novitech’s 8″ Micron CMFL Tool

Novitech Displays it new 8” CMFL tool at PPIM in Houston. This state of the art CMFL tool has 576 primary sensors and can used run AMFL, Geometry, IDD and IMU modules.

The version 10 of this 8” tool brings the total number of sensors on board to 992. All these systems together can reach a sampling density up to 2,000 per square inch.