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Gamma Scan - Piping
Benefits of TruTec™ Pipe Scan
- Measure presence, extent and position of solids within a process
pipe
- Establish the extent, duration and frequency of slugging
- Measure liquid / gas interface passage during pipeline purging
operations
- Confirm the presence of liquid carryover or gas undercutting within
a vapour / liquid separator
TruTec™ Pipe Scan technology offers a non-invasive
method of examining the contents of a pipe using a small hand held device
that is positioned across the section of pipe under investigation. A yoke
system is designed to span the outside of the pipe with a sensitive detector
and source located at each end of the yoke. The yoke is moved along the
surface of the pipe and readings are taken at set positions. The count
rate at the detector is converted to a density reading. A measurement
is taken of signal intensity and a direct interpretation of pipeline contents
is made. The most common applications of this technique include the determination
of solids build-up within a pipe, slugging of process gas, liquid or solid
over a period of time through a transfer pipeline and the confirmation
of liquid carry over or gas carry under within a two phase gravity separator.
A TruTec™ Pipe Scan can be used to quickly identify the amount and
location of solids build-up or fouling that restricts process fluid or
vapor flow in flare, transfer, steam and start-up lines as well as vessel
overhead piping. The technology requires minimal preparation with no requirement
to remove insulation.
Knowledge of the expected density within the pipe allows the presence
of solids to be detected. If the density of the potential solid build-up
is known, the thickness within the pipe can be calculated. Measurements
are typically carried out in both the horizontal and vertical planes across
the pipe at each measurement location in order that a cross sectional
profile of solids can be determined.
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