Burner Management Systems (BMS) and Fuel Safety
FPS is one of very few companies in the world that
can supply a Burner Management System with a full complement of
boiler safety products. Our safety systems are typically supplied
including control cabinets, flame scanners, ignitors, valve trains,
blower assemblies, and water level detectors, all of which are
designed, built and tested in our factory. Over the past twenty
years FPS has continually developed and improved upon our product
line, and we now support one of the largest users list of BMS,
and BMS products, in North America.
The Burner Management System is the safety and
sequencing system used when firing boilers. The BMS common logic
includes fan control, power monitoring, boiler purge, boiler trip,
firing permissive and furnace implosion/explosion protection.
The fuel portion of the logic includes fuel headers and/or coal
distribution systems, ignitor control, burner control and air
register control. When required, the BMS also includes the PA
duct heaters and fuel lean gas reburn (FLGR) systems. Additional
features that are available include automatic fan runup, automatic
coal mill startup and shutdown sequencing, and automatic burner
start/stop for load varying boilers.
Some standard features of FPSs BMS include
a fully redundant, hardwired Master Fuel Trip circuit, which is
in full accordance with the latest NFPA 85 code. First out and
"cause of trip" annunciation, alarming, and sequence
of events monitoring are also included with each system.
Emergency Shutdown Procedure (ESP)
In some cases, an additional level of safety is
required over and above the traditional safety system. In these
instances a hardwired ESP is implemented. An example of one such
case is on a black liquor recovery boiler, where an ESP is required
in the event of a water or steam leak into the boiler.
FPS has designed an ESP system that is widely used
in conjunction with FPS designed safety systems. The ESP provides
a means whereby the operator can, in a single operation, shut
down the boiler by removing all fuels and place the boiler in
a predefined condition to safely remove all combustible gases
and isolate any possible source of water or steam.
FPS can engineer, design and manufacture an ESP
system either as a single standalone unit, or as an integrated
part of a supplied system.