TPi April 2008

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EquipmentPipel ine Inspect ion
52 Tube Products International April 2008
Olympus NDT, a specialist in non-
destructive testing (NDT) instruments
and solutions, offers customers a
wide range of manual or automated
inspection solutions featuring innovative
ultrasonic testing (UT), eddy current
(ET), and related non-destructive testing
technologies.
Non-destructive testing is a means for
examining thehidden internal structureor
measuring the thickness of parts without
cutting or otherwise damaging them. It
offers important tools for ensuring both
safety and quality control in a wide
variety of industrial, infrastructure, and
engineering applications.
Olympus NDT recently introduced
the new Epoch LTC digital ultrasonic
flaw detector. Weighing only 2.12lb
(0.96kg), the handheld instrument is
now the smallest in its line of Epoch
flaw detectors. The rugged Epoch
LTC is built for use in a wide range
of weather conditions and difficult
inspection environments. Its sealed
case meets IP67 requirements to
withstand the rigours of very wet or
dusty environments, while the multi-
colour transflective LCD with full VGA
resolution provides superior readability
from bright sunlight to complete
darkness. The unit also features a
simple keypad that allows full control
from the left or right hand for direct
access to all important functions.
Digital pipeline leak detection
As leaks along pipelines have severe
environmental and safety implications,
integrity of supply has never been more
important.
Conventional monitoring techniques are
unable to offer real-time, continuous,
non-intrusive monitoring.
Sensornet’s digital pipeline leak
detection solution uses fibre optic
Distributed Temperature Sensing (DTS)
technology to spot and locate the
smallest leak in seconds, and to within
1 metre, without operational delay or
risk.
The system is an extremely versatile leak detection solution that is based on
temperature measurements using distributed fibre optic sensing technology.
It can be used to detect both liquid and gaseous leaks in diverse industrial
applications such as oil and gas transmission and distribution; LNG, steam
and water pipelines. The system can be used along long distance pipelines
with repeater stations situated at block valve or pumping stations, providing full
coverage of the entire pipeline.
By detecting the temperature change of the surroundings, the DTS can not
only detect the presence of a leak, but can also pinpoint the location of the
leak down to 1m. The system provides measurements from every 10 seconds,
as such rapid detection is essential in the case of potentially explosive gases.
Distributed Temperature Sensing is the only leak detection technique that can
monitor the pipeline in real time and provide precise leak location to the nearest
metre.
Sensornet offers a complete monitoring solution package, including initial
application design input, system installation and integration, commissioning
and data interpretation. The company works with advanced thermal modelling
software and leading industry partners to monitor mission critical infrastructure
and obtain meaningful and valuable information.
Sensornet Ltd – UK
•
The Sentinel Distributed Temperature S S
Sensing system is part of Sensornet’s
digital pipeline leak detection solution
Digital ultrasonic flaw detectors
Olympus NDT’s Epoch LTC digital S S
ultrasonic flaw detector
The OmniScan MX is Olympus NDT’s S S
most successful modular and portable
phased array and eddy current array
test unit
The Epoch LTC provides powerful
standard measurement features and
specialised software options to find
internal defects in a variety of materials.
The instrument is EN 12668-1 compliant
and features a square wave pulser,
selectable digital filtering, gain range
from 1 to 110 dB, peak memory, 0.001"
(0.01mm) measurement resolution, and
one gate with programmable alarm.
Dynamic DAC/TVG software is standard
with the Epoch LTC, and application-
specific software options include DGS/
AVG flaw sizing, manual PRF control,
extended range, tunable square wave
pulser, curved surface correction,
and AWS D1.1/D1.5. The Epoch LTC
provides internal storage of inspection
data of 50,000 IDs with waveform and
measurement parameters, while a Mini