Balance of Plant
Balance of Plant
Balance of plant (BOP) applications typically include
discrete device (motor/pump/fan) control, ash handling, air quality
control, demineralizer control, pulverizer inerting, and coal
handling applications. Fossil will engineer, design, and manufacture
custom control solutions for any steam/electric generating application
or other industrial applications.
Sootblowers are devices used to clean the
heat transfer surfaces of a boiler. FPS designs and manufactures
PLC based sootblower systems to sequence the starting and stopping
of sootblowers. Our systems offer extensive on-line monitoring
and maintenance abilities through the use of a Windows-based graphical
Since each sootblower project is considered on
its own merits, a team of dedicated design engineers familiar
with the development of Sootblower systems will evaluate the design
and construction of your boiler to determine the most efficient
system design for your application.
Data Acquisition System (DAS)
A typical DAS comprises the following systems -
alarming, logging, point categorization and display. All systems
are visually configurable and have unlimited archival data storage.
Data points are categorized into three groups - Critical, Warning
and State - and switching data points to an alternative group
is easily executed via the CRT operator interface.
Selecting data points for the periodic Alarm log
is an operator function via the operator interface. Up to twelve
different alarm logs can be created and the reporting period is
operator selectable. Alarm points are date/time stamped when coming
into and going out of alarm state. Trending and timed snapshot
reports of a large number of process points are also available.
FPS will engineer, design, and manufacture a DAS
to accommodate large point counts involved in monitoring critical
process data found in large industrial applications. Additionally,
Control System packages supplied by Fossil can be engineered to
interface to existing DAS systems to create a complete control,
monitoring and data management package.
Supervisory Control and Data Acquisition (SCADA)
Applications requiring centralized SCADA capability,
as well as trending, logging etc., have need of a system similar
to the basic DAS system. SCADA systems are used to monitor and
control plant or equipment via a system consisting of a central
host (or master), one or more field data gathering and control
units (or remotes), and a collection of standard and/or custom
software which is used to monitor and control remotely located
field data elements.
The control may be automatic or initiated by operator
commands. Data for the system is gathered over data highways from
other systems such as the BMS, or from Remote Terminal Units (RTUs)
such as PLC or DCS I/O modules.
SCADA systems located in a confined area usually
communicate via a local area network (LAN), which is normally
reliable and exhibits high speed data transfer rates. Generally,
SCADA systems cover larger geographic areas, and rely on a variety
of communications systems that are normally less reliable than
The master will scan the RTU's and the data is
processed to detect a change in field status. Data can be one
of three main types, analog, digital (on/off), or pulse (eg: counting
revolutions of a meter) which are normally accumulated or counted.
SCADA systems exhibit predominantly open-loop control characteristics
although some elements of closed-loop control may also be present.
The SCADA systems designed by FPS are "Event-Driven"
meaning that no changes occur in the master until a change occurs
in the field. The remote RTU's are polled for changed values,
which will be used to update the real-time database. The database
update will trigger alarm evaluations, display updates, and other
Software for FPS designed SCADA systems runs under
Microsoft Windows NT/2000, which comes equipped with an extensive
library of custom tools, objects and live data base connectivity.
Every system can be easily configured and maintained by plant
personnel upon receiving the FPS training program.
FPS will engineer, design, and manufacture a SCADA
system to monitor critical processes found in large and small
industrial applications. Additionally, SCADA systems can be engineered
to interface with existing DAS, BMS, or DCS systems to create
a complete control, monitoring and data management package.