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Corrosion monitoring
KEMA Corrosion Probe, KEMA on stream wall thikness measurements
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KEMCOP®: a simple but effective Corrosion and Fouling Monitoring System
Corrosion in vital components is a continuous cause of concern
in power plants and municipal waste incinerators. Maintenance
engineers are often forced to carry out drastic operations to check
if corrosion will play a role in the planned maintenance strategy.
KEMA has developed a simple but effective method for early
corrosion and fouling detection of waterwalls.
KEMCOP®'s
(KEMa COrrosion
Probe) can be mounted on several locations in the strips
of waterwalls in (coal fired) power plants and waste incineration
plants. They are easy accessible and can be mounted and dismounted
during operation. They give information about corrosion rates and
the quality and composition of corrosion products as a result of
the firing conditions.
All KEMCOP® data are stored confidentially in a unique database.
We guarantee quick and clear results due to standard sample
preparation and reporting procedures. KEMCOP®'s are already
installed in three Dutch coal fired power plants and two waste
incineration plants.
KEMA is over 50 years active in the field of corrosion and
material testing. Based on experience and optical and electron
microscopical examination in the modern KEMA Laboratory, clear and
well founded statements are made on the formation of oxidelayers
and deposits.
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Aviod expensive scaffolding and insulation work
Corrosion and erosion affect the wall thickness of your
pipework. Regular overhauls are planned to inspect the integrity.
Expensive scaffolding has to be built for locations that are
difficult to access. For these locations and critical components in
your system the KEMWAT (KEMA system for on stream wall thickness
measurement) is the right solution for you. KEMWAT accurately
measures the wall thickness at temperatures up to 550ºC.
Applied method
An ultrasonic technique is applied to measure the wall
thickness of pipes. Critical areas, which are mostly known from
experience or inspections, are subject for monitoring. At the
critical spot a stud is welded and an ultrasonic transducer is
mounted at the free end of the stud just outside the
insulation.
Cables are connected to a junction box at an easily accessible
place so that readings can be taken at any time during operation.
Measurements can be performed with standard ultrasonic
equipment.
Measurement resolution of less than 0.1 mm are achieved using a
thermocouple wire mounted near the stud weld. Measurement intervals
can vary depending on the decrease of the wall thickness monitored.
Results can also be used in condition based maintenance.
Your benefits
Cost savings:- no scaffolding necessary
- fewer inspections
- higher availability
Input to improve maintenance planning.
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