wrote in message
oups.com...
Anyone have experience with this? Where I work we have alot of dust
collector fires. Our collectors are connected to shot peening
equipment. Occassionally, I am guessing a spark is sucked into the
collector and lighting the filters on fire.

We have sprinklers in the machine but we would like to stop it from
happenign all togther. (Every time the sprinkler goes off the fire
department is notified). needless to say the fire department is not
happy with us.

Could be static electricity igniting the dust initially, once alight
its gets the accumulated dust particles smoldering away until
you have a full blown fire in the collector system.

Static is often a problem in dusty workplaces - flour mills
used to be a classic for static flash fires until they worked
out that extracting dust was safer. Do a weblookup on
controlling static, easiest way is to earth out collectors, etc.
Its made worse if you multiple dust types and varying pipe
dimensions, varying pipe materials, also the more disturbance
in the air flow the greater the build up of static charges.

Quick and dirty check for static is to go touch part of the
system whlist holding an earthed out piece of metal. If
you get a zap theres static in the system.