LRUT Screening for Sleeved and Cased Pipelines with Feasibility Based Assessment
Why Sleeved and Cased Pipelines Require Specialized Screening
Sleeved and cased pipelines are commonly installed at:
➤ Road crossings
➤ Rail crossings
➤ River crossings
➤ High-risk mechanical zones
➤ Environmental protection corridors
While casings provide mechanical protection, they also introduce inspection challenges. Corrosion between carrier pipe and casing, coating damage, and moisture entrapment can occur without visible signs.
Excavation of sleeved or cased pipelines is costly and operationally disruptive.
NDT AND PWHT SOLUTIONS PVT LTD provides specialized LRUT / Guided Wave Ultrasonic Testing (GWUT) services for feasibility-based screening of accessible sleeved and cased pipeline sections.
What Are Sleeved / Cased Pipelines ?
Sleeved or cased pipelines consist of:
➤ A carrier pipe
➤ An outer casing pipe
➤ Annular space between them
Risks include:
➤ External corrosion of carrier pipe
➤ Moisture entrapment
➤ CP shielding
➤ Coating degradation
➤ Localized wall thinning
These sections are difficult to inspect using conventional NDT methods.
How LRUT Supports Sleeved / Cased Pipeline Assessment
LRUT screening can be applied from accessible ends of the pipeline to evaluate:
➤ Carrier pipe condition approaching casing
➤ Potential wall-loss reflections
➤ Corrosion-related anomalies
➤ Geometry change reflections
Important:
Inspection feasibility depends on casing configuration, length, coating, and attachment density.
Our engineering team conducts a feasibility assessment prior to deployment.
Our LRUT Strategy for Encased Pipelines
🔹 Feasibility Analysis
Evaluation of casing design, access, and expected signal attenuation.
🔹 Access-Based Long-Range Screening
Screening from accessible sections adjacent to casing.
🔹 Corrosion & Wall-Loss Detection
Screening-level identification of suspect thinning zones.
🔹 Risk-Based Excavation Prioritization
Guiding targeted excavation only when justified.
🔹 Engineering-Led Interpretation
Certified Level III review of complex reflection patterns.
Technical Capability – NDT AND PWHT SOLUTIONS PVT LTD
We deploy:
✔ Piezoelectric Collar LRUT Systems
Optimized for long-range screening.
✔ EMAT Guided Wave LRUT Technology
Applicable in coated or high-temperature environments.
✔ Custom Collar Engineering
Supporting diameters from 1.5 inches to 72 inches and beyond.
✔ Range Prediction Modeling
Pre-inspection attenuation analysis for encased configurations.
✔ Structured Indication Classification
High / Medium / Low risk categorization.
Industries Where Sleeved Pipeline Screening is Critical
➤ Midstream transmission pipelines
➤ Cross-country pipelines
➤ Oil & gas infrastructure
➤ Municipal utilities
➤ Industrial corridors
➤ Slurry transport systems
Engineering And Consulting Support
NDT AND PWHT SOLUTIONS PVT LTD provides:
➤ Feasibility study for cased sections
➤ Range modeling & attenuation assessment
➤ Test point engineering
➤ Procedure drafting & client approval
➤ Technical advisory for excavation planning
➤ R&D support for complex encased configurations
➤ Code-compliant documentation
We support:
➤ Pipeline operators
➤ Integrity managers
➤ EPC contractors
➤ Third-party inspection agencies
➤ Infrastructure owners
Advantages of LRUT for Sleeved And Cased Pipelines
✔ Reduces unnecessary excavation
✔ Minimizes regulatory disruption
✔ Lowers inspection cost
✔ Supports risk-based integrity programs
✔ Rapid screening from accessible sections
✔ Improves crossing safety management
Deliverables for Sleeved / Cased LRUT Projects
Each engagement includes:
➤ Feasibility assessment report
➤ Inspection execution plan
➤ Coverage documentation
➤ Distance-based indication table
➤ Severity classification (High / Medium / Low)
➤ Engineering summary report
➤ Targeted excavation recommendations
Why Choose NDT AND PWHT SOLUTIONS PVT LTD for Encased Pipeline LRUT ?
✔ Specialist guided wave expertise
✔ Feasibility-driven methodology
✔ Large diameter & custom collar engineering
✔ EMAT inspection flexibility
✔ Engineering-led signal interpretation
✔ Global mobilization capability
✔ Structured integrity reporting
Contact Us – Your Global Pipeline Integrity Partner
NDT AND PWHT SOLUTIONS PVT LTD
Specialists in Long Range Ultrasonic Testing (LRUT) & Guided Wave Pipeline Inspection
Headquartered in India | UAE Operational Support | Worldwide Deployment
Email: support@solutionss.org
Available for Global Mobilization & Technical Consultation
Speak with our LRUT engineering team to discuss sleeved and cased pipeline screening feasibility.