the Power of Burner Management Controls
Today, most facilities are focused on
increasing efficiency and decreasing fuel costs. Many are finding the
job easier with a burner management system (BMS) that helps produce reports
on a regular basis to monitor processes and detect trends. The power of
an advanced burner control system is that it can manage and report on
multiple aspects of a boiler control such as; fuel usage and hours of
use, stack temperature, lead/lag sequencing, boiler efficiency, and temperature/pressure.
A BMS controls every aspect of a burner to ensure proper sequencing and
safety. It protects against the malfunction of fuel-firing equipment and
reduces possible errors by following the proper operating procedure. The
BMS is designed to prevent firing unless a satisfactory furnace purge
is completed. It will also delay equipment startup if certain permissive
interlocks do not take place. After meeting these criteria, the BMS sequences
the burner through its different stages from pre-purge, lighting the pilot
flame through the main flame light-off.
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The BMS conditionally allows the continued operation of equipment only
while certain safety interlocks remain satisfied. Regular maintenance
and inspection of the system and its associated hardware is essential
for continued safe operation. Equipment safety is important to avoid equipment
loss, personnel injury and production downtime as a result of an accident.
With the advancement of microprocessor
technology, programmable systems have become the preferred management
design. These controls enable a boiler room manager to collect and analyze
essential data while maximizing production and maintaining environmental
Troubleshooting Made Simple
Not only are advanced control systems superior from the standpoint of
the volume of data they provide, but they prevent a boiler operator from
having to open the burner door to troubleshoot a problem. Every time the
burner door is opened, compliance with NFPA 70E arc flash requirements
could be necessary.
A traditional BMS sounds a general alarm, so in the past, a boiler operator
would have to open the door to assess the problem. With an advanced control
system such as the Cleaver-Brooks Hawk, the control panel’s touch-screen
HMI mounted in the front door displays individual alarms as they occur
and provides details about the problem.
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Issues such as high/low main fuel gas pressure or combustion air pressure
will sound an alarm. These types of problems will independently appear
on the display of an advanced control system’s HMI; however, a standard
burner management system does not provide this type of data without additional
expanded modules mounted and wired directly on the BMS control.
A boiler operator can install additional
flow meters to be monitored with an advanced control system that is not
available with a BMS controller alone, thus requiring an additional independent
control to monitor and display this information. The advantage of an advanced
control system is that it ties all of this equipment into one package
and displays it on one screen instead of having multiple devices to accomplish
the same thing.
for Your Facility
R.F. MacDonald Co. has a complete in-house department devoted to the custom
design and programming of comprehensive burner management and advanced
control systems. To see how we can help simplify and streamline your facility,
contact a representative near you.
This Boiler Information Tip was provided by Cleaver-Brooks
as a part of their Boiler Basics Resource Center