A HIGHER LEVELOF RELIABILITY®

Guided WaveInspectionGUL GWT

Guided Wave Services

REDUCE MAINTENANCE, INCREASE SAFETY AND OPTIMIZE YOUR PROCESSCapable of detecting internal or external defects, Guided Wave is an advanced NDE technique providing rapid screening of in-service pipeline. Long range inspection can be achieved from a single location as ultrasonic guided waves travel in both directions along the pipe, remotely scanning difficult to access areas in a single pass.

This innovative inspection technique reduces costs through minimal insulation removal, limited scaffolding and excavation, and shortened deployment times. Couplant is not used for this procedure and follow-up inspection for exact sizing and characterization is required to target problematic areas. Whether inspecting small or large pipes, our experienced technicians use qualified procedures and sophisticated analysis in identifying and reporting results.

ConventionalTransducer

TransducerRing

100% INSPECTIONGUIDED WAVE

THICKNESS CHECKLOCALIZED INSPECTION

GUIDED ULTRASONIC WAVES TRAVEL THROUGHTHE PIPE AND PIPE WALLS

ADVANCED NDE PROVIDING RAPID SCREENING OF IN-SERVICE PIPELINEA defect which reduces the pipe cross-sectional area by 5% or more can be detected in a GWT scan, and scan data is obtained dramatically faster than localized inspection methods. Our technicians strictly adhere to manufacturer training and comprehensive internal training programs.

Typical Ranges For Screening

100 20 30 40 50 60DISTANCE (METERS)

CONDITIONS

70 80 90 100

Ideal Conditions

Jump Over andPipe Bridges

Typical 30 Year OldPipe, Minimum Corrosion

Typical 30 Year OldPipe, General Corrosion

Typical Pipe WrappedIn Factory Applied Foam

Heavily Corroded Pipe

Bitumen Wrapped Pipe

6 Welds

First Flange

Second Bend/Branch

*NOTE* Low frequency transducers can be used to doublethe range when pipe conditions are causing attenuation.

Cross-Sectional

Loss

WallLoss

*NOTE* Although Cross-Sectional Loss is the same ratio in each example, the

severity of Wall Loss varies signi�cantly.

5% OR MORE CROSS-SECTIONAL LOSS CAN BE DETECTED

BEYOND INSPECTION

604.275.3800780.440.2131519.336.3021709.753.2100

PacificWestern

CentralAtlantic

503.652.8878937.228.9729 281.228.0000919.875.8240724.228.2155

WestMidwest

Gulf CoastSoutheastNortheast

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