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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