CRACK DETECTION AND PIPELINE INTEGRITY SOLUTIONS

Transcription

1 CRACK DETECTION AND PIPELINE INTEGRITY SOLUTIONS

2 The cornerstones of our success Protecting your assets in our environment Cracks, laminations and pipeline integrity Nature is one of our greatest assets. It needs to be preserved and protected as pipeline networks grow and operational efficiency becomes a key requirement. NDT Global provides pipeline inspections with industry leading first run success rates, superior data quality and rapid inspection report generation to protect your assets and to preserve nature in all its wilderness and beauty. Cracks and other types of material separations in the pipe wall can have serious effects on the integrity of a pipeline. Cracks and crack-like features can appear during manufacturing of the pipe, construction of the pipeline or during its operational life. Irrespective of its origin, it is of great importance to detect and locate a crack before it can grow into a material-specific critical size, which will cause the pipeline to fail. 02

3 Creating Inspection Intelligence the power of NDT Global engineering Different types of cracks can be detected, such as fatigue cracks, which are due to an applied cyclic loading, or stress corrosion cracking (SCC) caused by a corrosive environment, critical stress and susceptible material. Our engineering department is a pioneer in the development of ultrasonic inspection tools and has gained an excellent reputation for solving complex tasks such as dual and multidiameter, deep water and bi-directional inspections. These accomplishments have given NDT Global one of the most impressive reference lists in the industry. Understanding the inspection requirements of our customers, reliability, expertise and speed of response are our key driving factors. Evo Series UC 1.0 inspection tool 03

4 State-of-the-art crack inspection Pipe Wall, e.g. Steel Coupling Medium, e.g. Oil Evo Series UC 1.0 and LineExplorer UC high-tech for your pipeline Evo Series UC 1.0 and LineExplorer UC tools utilize state-of-theart ultrasonic technology applied within our in-house designed and patented sensor carriers. This allows us to successfully work within the entire range of wall thickness. The standard configuration of the Evo Series UC 1.0 and LineExplorer UC tools is primarily designed for cracks in an axial direction (along the pipe axis). These are generally the most critical cracks, as they are oriented perpendicular to the usually dominant (hoop) stress. A special configuration of the tool, Evo Series UCc 1.0 and LineExplorer UCc, is also available for the detection and sizing of cracks orientated around the circumference of the pipe. Typical examples of such cracks occur in the girth weld zone (heat-affected zone). Configuration Evo Series UC/ LineExplorer UC Evo Series UCM 1.0/ LineExplorer UCM Evo Series UCc 1.0/ LineExplorer UCc Bi-directional High pressure/ High temperature Dual and multi-diameter Task axial crack detection tool detection and sizing of axial cracks and crack-like features such as fatigue cracks, stress corrosion cracking (SCC) or weld cracks. available for pipeline diameters 6 and above combined metal loss and axial crack detection tool provides major advantages from an operational point of view: single mob/demob for both inspection types and single run for a given section combined data analysis circumferential crack detection tool detection and sizing of circumferential cracks in the pipe wall or girth weld zone special tool configuration which allows Evo Series 1.0 and LineExplorer tool use in a bi-directional mode, e.g. for the inspection of loading lines or offshore risers highly specialized tools optimized for application in a high pressure and/or high temperature environment, e.g. in deep offshore pipelines ILI tools operating at pressures of up to 500 bar (7250 psi) and 65 C (150 F) optimized ILI tools for the inspection of pipelines with different diameter sizes e.g. 8"-10 " or 36"-48" 04

5 External Crack Wall Thickness Internal Crack t 2 t 1 Stand-off How does ultrasonic pipeline crack inspection work? Evo Series 1.0 and LineExplorer by NDT Global offer: Evo Series UC 1.0 and LineExplorer UC tools for ultrasonic crack detection contain UT sensors which are oriented at a predetermined angle to the pipe wall. Ultrasonic pulses are insonified through the liquid medium into the pipe wall. By refraction a shear wave is obtained in the pipe wall travelling under a 45 zig-zag path. If the acoustic beam encounters an occurrent reflector (internal or external crack) in the material, it will be reflected and returned back to the transducer. The crack can be located based on the time-of-flight of the measured signal. The depth of the crack is then graded depending on the amplitude of the signal. For each pipeline diameter the sensor carrier will be equipped with a sufficient number of piezo-electric transducers to ensure 100% circumferential coverage of the pipe. axial crack detection and sizing (e.g. SCC, fatigue cracks, weld defects) circumferential crack detection and sizing absolute crack depth sizing tool sizes from 6" to 48" min. bend radius 1.5D cladded pipe inspection and analysis combined crack and metal loss inspection crack assessment and fitness-for-purpose studies (e.g. BS 7910) 05

6 Special solutions for a wide range of flaws and anomalies Key tool specifications Evo Series UC 1.0 and LineExplorer UC Available tool sizes 6" to 48" Maximum operating speed 1) 4 m/s Temperature range C Maximum pressure 120 bar Minimum bend radius 1.5D/90 Minimum axial sampling distance 1) Circumferential sensor spacing Key defect specifications (according to API 1163) Defect type Min. length Min. depth Depth classification and sizing accuracy at 80 % certainty axial crack and crack-like axial defects, e.g. SCC, fatigue cracks, crack-like weld defects 20 mm Axial orientation < ± 10 Radial orientation < ± 45 Length sizing accuracy at 90 % certainty 1 mm in base material & at weld 2 mm in weld ± 1 mm for depth = (1,... < 4) mm 4 mm for depth 4 mm ± 10 mm UC UCh UCx Defect location accuracy 1) : axial, from nearest girth weld circumferential for Ø < 20" for Ø 20" 0.75 mm 10 mm 7 mm 5 mm ± 0.1 m ± 10 ± 5 1) Max. operating speed and min. axial sampling distance depend on specific ILI tool set-up. Special configurations for high temperature, high pressure, multi-diameter and bi-directional inspections available upon request. Detection of base and weld anomalies In addition to the SCC and fatigue cracks in the base material of the pipeline, the Evo Series 1.0 and LineExplorer tool range also detects and sizes planar anomalies in the weld and heat-affected zones. Typical detectable anomalies are: weld misalignment lack of fusion lack of penetration undercut caps root and hook cracks Combined metal loss and crack inspection NDT Global offers a special configuration of the Evo Series 1.0 and LineExplorer tools which combines metal loss and axial crack inspection capabilities. The Evo Series UCM 1.0 and LineExplorer UCM tools provide major operational advantages such as single mobilization/demobilization for both inspection methods, a single run for the specified section of a pipe and a combined data analysis. 06

7 B-scan showing indications from an external crack field Our product your report C-scan of crack inspection data NDT Global offers the full range of pipeline integrity assessments. Data analysis results are compiled in the inspection report according to the scope defined with our customers and include the following: an executive summary operational details of the inspection a summary of results with regard to the different types of planar anomalies (cracks, SCC, notch-like and weld flaws) a maximum allowable operating pressure calculation detailed descriptions and printouts of anomalies (dig sheets) printed and digital versions crack depth profiles NDT Global focuses on rapid report generation in a wide range of formats which are complemented by in-house developed software packages for data visualization and pipeline data management. Enhanced integrity assessment NDT Global s integrity team offers immediate and future pipeline integrity assessments which include: crack failure assessment (e.g. BS 7910) fatigue assessment a comprehensive set of inspection run comparisons (with regard to time, technology) remaining life assessment rehabilitation and maintenance recommendations NDT Global uses in-house developed software and applies the latest industry assessment procedures and codes to determine the pipeline s structural integrity. 07

8 Canada Germany Ireland Malaysia Mexico Russia Spain UAE UK USA CIM-007-en, Rev 1.0, 01/2016 Copyright 2016, NDT Global