AXISS™: In-line inspection
axial strain measurement
service
Proactive condition assessmentand monitoring to ensure
pipeline safety

Features and benefits• Delivers absolute axial strain tosupport fit for service decisions

In-line inspection (ILI) based axial
strain measurement is the solution
needed to mitigate more severe axial
strains before they develop, causing
pipeline failure. Proactive, costeffective axial strain measurementmeans you can detect smallchanges in strain conditions, which
can be crucial to the life and safetyof the pipeline.
Baker Hughes, Process & Pipeline
Services’ AXISS™ service is the only
way to measure axial strain with
an ILI tool — providing a complete
understanding of the entire pipeline
without needing costly intervention.

Maximum insight with minimal
disruption
Previously, axial strain could only be
estimated using strain gauges or bymaking cut-outs from the section
under investigation. While strain
gauges measure axial strain startingfrom the time of installation on thepipeline, AXISS specifically detects
and monitors areas of increased
axial strain through the life of thepipeline, including those left during
manufacturing.
When combined with the bendingstrain data provided by an inertial
measurement unit (IMU), you canbe confident in the integrity of yourpipeline with a more complete
picture of the total strain condition.
While dedicated axial strain
inspections can be performed,
the AXISS measurement system
is retrofitted to our suite ofMagnetic Flux Leakage (MFL) tools(VECTRA™, VECTRA™ GEMINI andNew MagneScan™) for operationallyefficient and cost-effective
inspections conducted duringscheduled corrosion inspection
surveys.

The science of best in classaxial strain detection
Axial strain detection andmeasurement are achieved
through an electromagnetic sensor
technology that measures the strain
in a thin surface layer of the pipematerial. Absolute strain is delivered
when using a calibration factor
which is based on a representative
pipeline sample of the inspected
section or predicted by a Baker
Hughes proprietary analyticalcalibration model.

• Deployed on standard MFL tools
to efficiently collect strain data
during standard scheduled MFL
inspections• Detect strain following external
events to support geohazard
management programs andidentify new threat locations• Understand total strain history
from construction and monitor
condition throughout pipeline
service life
• Validate strain levels followingstrain relief activities• Provides a more comprehensive
view of pipeline strain thanstandard IMU bending strain
surveys

Additional solutions:• Total longitudinal strain integrity
engineering reportAXISS configurations and tool sizes:
Number of probes

MFL Platform
MagneScanTM

84

New MagneScanTM

Tool size range
12” to 36”

VECTRATM12”, 16”, 20”

VECTRATM GEMINI

20”, 30”, 36”

VECTRATM24” to 42”VECTRATM GEMINI

24” to 42”

AXISS specifications:
Axial strain

MicroStrain

Percent

Axial strain at POD = 90%

200µe

0.02%

Standard axial strain accuracy at 80%certainty when samples are provided±100µe±0.01%

Axial strain accuracy at 80% certainty whenusing analytical calibration model± (100µe + 15% of reported strain)± (0.01% + 15% of reported strain)

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09/2021bakerhughes.com