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Technology

EMAT Pipeline
Inspection

PIPECARE EMAT inspection supports crack detection and integrity assessment without the need for a liquid couplant. The technology is especially valuable for gas pipelines and challenging inspection conditions where surface-breaking cracks, coating-related threats, and crack-like anomalies must be identified with confidence.

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EMAT pipeline inspection technology for crack detection and integrity assessment

Description

INSPECTION & ACCURATE CRACK DETECTION

Our EMAT inspection method generates and uses ultrasound for the detection of cracks and stress corrosion cracking without the need for a liquid couplant. A secondary benefit of the EMAT technology is that it can also detect disbonded coating.

This technology based on the generation of ultrasonic waves is expanding ultrasonic inspection methods from only liquid lines to gas pipelines. It has distinct advantages that make it the technique of choice for many applications with accurate 360-degree inspection and 100% line coverage.

Specifications

EMAT tool specifications

Description	Value
Tool sizes	Available upon request
Pipeline inspection medium	Gas or Liquids
Tool inspection speed range	0.3 – 2.0 m/s (0.98 – 6.56 ft/sec)
Sampling rate	1.5 ms
Circumferential sensor spacing — EMAT	60 mm (2.157 in)
Circumferential sensor spacing — Tri-axial Hall	2.4 mm (0.095 in)
Wall thickness range	4 – 13 mm (>13 mm available upon request)
Maximum pipeline temperature during inspection	70°C (158°F)
Maximum pressure	80 bar (1160 psi)
Minimum bend radius	1.5D 90°

Detection & Sizing	Value
Feature detection	Axial cracks and crack-like features, longitudinal weld cracking, lack of fusion, SCC, coating disbondment, and axially-oriented metal loss
Minimum crack depth at POD = 90% (L ≥ 40 mm)	0.2t in pipe body / 0.25t in seam welds
Crack depth sizing accuracy at 80% certainty	+/- 0.20t in pipe body / +/- 0.25t in seam welds
Crack length sizing accuracy at 80% certainty	+/- 20 mm (0.787 in)
Coating disbondment area detection at POD = 90%	100 mm (3.937 in) diameter
Feature location axial accuracy from nearest girth weld at 90% certainty	+/- 0.1 m
Feature location circumferential accuracy at 90% certainty	+/- 10°
Compliance	API 1163, NACE SP0102, NACE SP0204, API 579

Advantages

Crack detection without couplant

EMAT generates ultrasonic waves directly in the pipe wall, enabling crack and SCC detection in gas pipelines where liquid-couplant UT cannot run, with 360° coverage and 100% line coverage.

SCC & coating disbondment

Identifies SCC-susceptible locations by detecting disbonded-coating areas down to 100 mm diameter, supporting targeted monitoring and mitigation before cracks propagate.

EMAT + tri-axial Hall sensors

High-resolution EMAT crack sensors run alongside tri-axial Hall sensors for metal-loss evaluation, down to 2.4 mm circumferential spacing, with API 579 crack assessment available.

How we work

Technologies

PIPECARE provides In-Line Inspection Services to locate, identify and size these threats and support your integrity management requirements.

We use a whole range of measuring instruments that allow us to detect corrosion, cracks, weld anomalies, and deviations in the shape of pipelines and determine their dimensions.

Electromagnetic Acoustic Transducer

Ultrasonic Crack Detection & Wall Measurement

Magnetic Flux Leakage

Transverse Field Inspection

Caliper - Geometry & Deformation Detection

Combination Tools – Multi-sensor capability

We use a whole range of measuring instruments that allow us to detect corrosion, cracks, weld anomalies, and deviations in the shape of pipelines and determine their dimensions.

AquaScan™

Crawler Systems

Tubing Inspection Tools

We use a whole range of measuring instruments that allow us to detect corrosion, cracks, weld anomalies, and deviations in the shape of pipelines and determine their dimensions.

PredictaTM

CyclopTM

EMAT PipelineInspection

INSPECTION & ACCURATE CRACK DETECTION

EMAT tool specifications

Technologies

EMAT Pipeline
Inspection