furnace inspection services...since 1998, intero has carried out inspections on furnaces and...
TRANSCRIPT
Maintaining the integrity of your installation with minimum downtime
Furnace Inspection Services
Regular cleaning and inspection of
your furnace increases its reliability
and continuity. Knowing the
remaining wall thickness of the
tubes can also lengthen the lifecycle
of the furnace tubes and prevent
unwanted shutdowns. Intero has
designed an intelligent, free-
swimming tool that is capable
of inspecting tubes and bends
of your furnace, with a minimum
impact on shutdown time.
Reliable and cost effective
Since 1998, Intero has carried out inspections on
furnaces and pipelines. In its continued effort to further
improve the applications of Intero’s patented Piglet®
ultrasonic internal inspection system, a new tool has
been developed and added to the Piglet® family.
Furnace Piglet®
The Furnace Piglet® is utilized for the inspection of
furnace tubes, whether they are smooth, studded
or finned. The Intero designed Furnace Piglet® is an
intelligent free-swimming tool that is capable of
inspecting the tubes and bends of the furnace, with a
minimum impact on shutdown time.
Prior to a furnace inspection it is essential to clean
the furnace thoroughly to remove all the cokes in
order for the ultrasound to penetrate the pipe wall.
Our furnace cleaning department provides excellent,
proven cleaning results. When combined with Furnace
Piglet® inspection technology, it is possible to
guarantee the cleanliness of the furnace tubes. In
addition, during the cleaning, verification runs can be
used to demonstrate the cleanliness of the tubes in
order to optimize the results.
High quality cleaning and inspection contributes to
the integrity of the furnace, resulting in minimal
shutdown time. Regular cleaning and inspection
increases the reliability and continuity of your furnace
and knowing the remaining wall thickness of the
furnace tubes can also lengthen their lifecycle and
prevent unwanted shutdowns.
A-Scan dataThe storage of the raw A-scan data enables highly
accurate and reliable data analysis. The final report
is presented the day after the inspection when the
results of the cleaning, if needed, and minimum
wall thickness per tube are presented. The report
contains a brief overview in graphical and tabular
format linked to the furnace layout as well as detailed
C-scan graphics for each tube.
The Furnace Piglet® is typically configured with:
• Disk for sealing and centralization (4” to 8”)
• Piglet® UT-sensor body with fixed transducers
• Onboard data storage (A-scan)
• Flexible couplings for passing bends
Why you should use Intero Integrity Services’ Furnace
Piglet®:
• Inspection time has minimum impact on shutdown time
• Passing bend radii ≥ 1.5 D (smaller on request)
• Bi-directional, compact, lightweight, modular design
• In-house developed, tested and operated
• Reporting conforms to API579, ASME FSS-1/2007
(if required)
• Reporting and inspection executed by qualified NDT
specialist
• Storage of raw A-scan data to enable accurate and
reliable data analysis
• C-scan of full furnace in report
• Corrosion growth comparison capabilities
• Ability to modify the tool for specific situations
High quality cleaning and inspection in one solution
2
Launcher
Receiver
Decoking unit
Furnace inspection
3intero-integrity.com
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C-scan results
Tabular
Data analysis / Final reporting
Launcher
Receiver
Decoking unit
Furnace inspection
Corrosion growth analysis A German refinery requested a Piglet® Furnace
inspection of coils in a hydrobon furnace which it
operated. Prior to the inspection, the coils were
cleaned by our furnace cleaning department. Both
the radiant and convection sections of the coils were
inspected, utilizing the Piglet® ultrasonic-based
intelligent pig technology. General wall thinning
caused by internal erosion/corrosion was detected
throughout. The material of the convection and radiant
coil sections were fabricated with X12CrMo9 and
12CrMo19, respectively. The nominal diameter of the
coil was 5” NPS. The furnace had been in service for a
long period of time and was identified as Schedule 40.
The furnace had been inspected in April 2008,
December 2011, July 2012 and January 2013 and during
these inspections the corrosion growth was monitored
to extend the lifetime of the furnace for a shutdown
in 2014. After the inspection, the customer decided to
cut out the worst tube. After it was removed, a third
party-certified manual UT inspection company verified
our finding and confirmed the minimum wall thickness.
Benefits• The inspection allows our clients to operate with
confidence until the next shutdown.
• A better understanding of the assets condition will
lead to improved operations.
• Operations can now see the effects of the process on
the performance of the heater coils and corrective
action can be implemented to prolong the life of the
coils or further understand the impact of extended
runs at higher loads.
• By knowing the condition of the coils and the heaters
operating parameters, the life of the furnace can be
calculated and a replacement strategy developed, thus
allowing greater plant reliability and occupancy.
5intero-integrity.com
6.6 mm / 0.925”
3.6 mm / 0.1411”
We know your space
Intero Integrity Services Headquarters
Steenoven 2-6
4196 HG Tricht
The Netherlands
+31 (0)345 228 600