Chemical Engineering August 2017 - 21

plan for labor. "
Often, digital controls can be tied into a monitoring
system for enhanced control. " Metso's Expertune PlantTriage
has helped many customers improve control and
increase process performance. They can read diagnostics
from the valve, take measurements and look at various
parameters for an in-depth view of how the valve is
performing, " explains Niemela.
After-market services
With the recent introduction of digitalization, processors
often have good digital data available, but don't have
the ability to use it to optimize their processes due to
a lack of resources. " It is not always easy to find qualified
professionals to analyze the data, manage inventory,
perform and record maintenance and carry out the
other necessary activities for reliable and efficient valve
operation, " says Niemela.
For this reason, several valve manufacturers are stepping
up their game with the introduction of after-market
service programs designed to help users in these areas.
Metso, for example, offers Installed Base Management
to help users optimize maintenance, operations
and spare parts. As part of this service, Metso experts
conduct a tag-by-tag inspection to verify field device
details. In addition to correctly identifying installed devices,
visual condition is also assessed. An installedbase
audit gives up-to-date and accurate information
to ensure that spare parts are at hand and any issues
are promptly identified. With this information, Metso
can also recommend relevant maintenance activities to
support plant availability, process performance and risk
control. " These days it is not easy to find good professionals,
so more and more of our customers are relying
on us as a partner who can provide those capabilities, "
says Niemela.
And, embracing cloud-based technologies to take
service to the next generation, Coleman says Emerson
provides Control Valve Connected Services, which enables
remote Emerson experts to continuously monitor
critical control valves and generate actionable data to
optimize performance. The continuous, non-intrusive
health monitoring service delivers predictive analysis.
The service analyzes a variety of diagnostic data collected
from digital valve controllers to identify potential
control valve failures before they cause significant interruptions
to a plant's operations. The monitoring program
makes use of tools and smart technologies such as
Fisher FieldVue digital valve controllers.
" Our customers use this service on their most critical
control valves, " says Coleman. " On a routine basis, we
would pull diagnostic data and run our analysis tools so
we can see the increase of degradation and use the information
for trending purposes. Through this time-series
analysis, we can see that a valve may soon require
maintenance before it becomes a 'red light' situation and
we can alert our customers to schedule and prepare to
maintain the valve before there's a potential issue. " n
Joy LePree
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Chemical Engineering August 2017

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