The final laboratory samples must have the same
characteristics as the entire lot, where the quantity of raw
samples will be approximately 350 kg per sub-lot, the
final prepared analytical sample that is delivered to the
laboratory will be 100 grams.
Proximate and ultimate analysis are often used to
characterise selected coal properties. Proximate analysis
refers to the determination by prescribed methods for
total moisture, inherent moisture, ash content, volatile
matter content, gross calorific value, net calorific value
and sulfur content, where the total carbon content as
standard will frequently be analysed as well for the
calculation of the CO
2
emission factor, especially for
German consumers. Ultimate analysis includes the
determination of total carbon, total hydrogen, nitrogen
and calculation of the oxygen by difference. All requested
analysis are carried out in the laboratory according to the
relevant ISO and/or ASTM standards under full
accreditation according to ISO-17025.
Umpire analyses
Coal sampling and analysis do not always guarantee
100% accurate results, as these depend heavily on human
input and this may introduce human error inaccuracies.
The coal may have become segregated during loading,
transporting or unloading operations so that the particles
are grouped together by size.
Therefore on a regular basis, RC Inspection is
nominated to perform umpire analysis on solid fuels. For
these samples as well, the analytical results will be
unreliable when sampling and/or sample preparation has
not been performed accurately at load-port and/or at
disport.
As a result of the management’s longstanding personal
experience, RC Inspection recognises the importance of
extensive knowledge and experience, as well as the ISO
standard in order to perform highly representative
inspection and sampling services, including the sample
preparation of the obtained bulk samples.
This has led to the managing experts of RC Inspection
developing special internal procedures for sampling,
inspection and sample preparation for all kinds of solid
fuels.
The surveyors are all well informed and instructed
according to these internal procedures, which is necessary
to guarantee high‑quality services.
These procedures are recognised by the fact that
RC Inspection recently obtained accreditation according
to the ISO 17020, under registration number I 308.
This accreditation is valued for the following services:
visual inspection, sampling, sample preparation,
barge‑gauging, draft survey and everything related to
these subjects for among other solid fuels.
This accreditation guarantees for the clients that the
policies, practices and procedures of the company can be
ensured with consistent high quality and expertise in the
knowledge of the commodities and the provided
services.
ACCURATE,
RELIABLE SAMPLING
mclanahan.com
For new or existing system installation,
call our experienced design engineers at
+1 (814) 695 9807
Single & Multi-Stage Systems
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Cross Belt & Falling
Stream Samplers
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Truck & Rail Auger Systems
Cut Zone Systems
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Hammermill Crushers
Rockertooth Crushers
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LabMill Crushers & Rotary
Splitters
• Verify that bulk materials meet quality
requirements
• Provide data necessary for process
control
• Reliably collect samples with minimal
operator interaction
• Intuitive user interfaces for local
system operation and setting
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