Several years ago, a report provided by the EPRI reported that there
is at least one fire in a coal mill somewhere in the world each day.
With the increased use of Powder River Basin Coal, it might
be reasonable to expect that this figure is now much higher.
Spontaneous combustion with PRB Coal is very well known concern.
One very promising step towards protecting plants from loss
of generation and plant damage, is the implementation of a fire
detection system for coal mills.
Not a CO monitoring system, which takes constant maintenance
and calibration. Not
thermal detection, which may not respond until a raging fire is
taking place inside your mill.
In the last few years, a method of detecting coal mill fires
under the grinding table (where 95% of fires occur) has been
applied. This system
responds only to
combustion, eliminating false alarms, which may be prevalent in
other systems. The
occurrence of fires under the grinding table is typically linked to
coal being rejected, not transferred out of the pyrite door, or
perhaps being transported and stuck in the air inlet duct of the
Most fires go
undetected and the only evidence of such a fire is found when an
inspection is carried out and clinker is found in the mill.
These undetected fires could become catastrophic. Lack
of notifications of fires is not a safe method of determining if a
fire detection system is adequate. Our Mill Fire Detection System is
reliable, maintenance friendly, and proven on coal mills around the
arrangement for Mill Fire Detection
Sensors under grinding
Infrared Detector is tolerant of high temperatures and vibration,
responding instantly and only to flame, rejecting radiant heat or
"Quick Change" mounts for easy installation and
With highly automated coal handling equipment, personnel are no
longer able to look after every individual process. IR detection
notifies of potential trouble before a major hazard can occur.
Detect fires in the initial stages before hazardous explosions have
a devastating effect on equipment and production.
Clients report system payback by preventing increases in, or by the
reduction of insurance premiums.
| Mill Fire
Detectors on CE-type 783 mills.
Fires happen. Our Infrared Mill Fire Detection Systems help prevent them
from becoming catastrophic. Flicker
from any fire is detected by optical infrared sensors, but static
radiation is ignored. By utilizing flickering infrared signals,
sensors are tolerant of dust and condensation.
quick connect provides
easy removal of detector from high-temp bayonet mount.
CO systems can be
difficult to calibrate. Thermal detection is slow to
respond. Ensure true peace of mind with the installation of a
system which reacts immediately to flame, while ignoring radiant
heat or "hot spots".
& Spark Detection >
Flame Monitoring >