LRUT

Standards & Compliance

• Inspection methodologies aligned with ISO 18211 and ASTM E2775
• Compliance with applicable API inspection requirements
• Validated guided wave inspection procedures and reporting practices
• Code-compliant corrosion screening and integrity assessment methods
• Reliable digital data acquisition and traceable inspection records

Inspection Methodology

• Long-range screening of pipelines from a single inspection location
• Detection of corrosion, erosion, pitting, and wall loss
• Inspection of inaccessible, buried, insulated, and road-crossing pipelines
• Efficient coverage of long pipeline sections with minimal access requirements
• Support for integrity management and preventive maintenance programs

Calibration & System Validation

A key aspect of our methodology is calibration and validation of system performance before inspection activities are carried out. This ensures dependable defect sensitivity, accurate signal interpretation, and repeatable guided wave inspection performance under actual field conditions.

• Reference pipes with artificial defects including notches and corrosion patches
• Distance calibration using known reflectors such as welds and supports
• Signal response verification for defect sensitivity and repeatability
• Verification of wave mode selection and propagation characteristics
• Establishment of distance-amplitude response and sensitivity levels
• Validation of system range and attenuation compensation
• Reliable long-distance detection capability verification

LRUT / GWUT Applications

• Screening of above-ground, buried, and insulated pipelines
• Inspection of road-crossing and inaccessible pipeline sections
• Detection of general corrosion, localized pitting, and wall loss
• Inspection of pipelines at supports, sleepers, and difficult access locations
• Assessment of long pipeline sections up to approximately 30–100 meters from one test point

Inspection Controls & Best Practices

• Proper transducer ring installation and coupling around pipe circumference
• Selection of appropriate frequency and wave mode based on pipe condition and diameter
• Interpretation of features versus defect indications including welds, branches, and supports
• Verification of signal quality and guided wave coverage
• Use of LRUT screening results to guide follow-up inspections such as UT, PAUT, and RT

Industry Applications

• Oil & Gas and Petrochemical Facilities
• Refineries and Process Plants
• Buried and Insulated Pipeline Systems
• Marine and Offshore Installations
• Infrastructure and Industrial Maintenance Projects

Why Choose AIE?

By integrating advanced guided wave technologies with robust calibration and validation practices, AIE delivers efficient, reliable, and code-compliant LRUT inspection solutions. Our methodology enhances early corrosion detection, minimizes inspection downtime, and supports optimized maintenance planning and long-term asset integrity management.