One of my customers, (dental lab,- makes caps and crowns and false teeth, etc.) called yesterday about his smokes setting off in his casting room, (1600degree kilns, etc), from either heat or smoke that is created from the normal processes that he performs at least daily.
My first thought is to install a fan or exhaust fan to dissipate the heat/smoke.
Will be going there tomorrow to survey the situation.
Any thoughts, ideas, experience with this would be greatly appreciated.
Yes- an Advanced Multi-Criteria Fire Detector.
www.systemsensor.com/pdf/A05-0428.pdf
It uses smoke, CO, IR and and heat to determine if there is a fire, not just % obscuration of light.
Of course you would have to talk it over with the FD, but I am sure they would be amiable to reducing false alarms.
Oh they are $$$ price it out . If you have a conventional panel and you have an alarm verification feature, turn it on for that zone.
Oh go replace it with a 135 fixed temp.
Or a flame detector. Although that is a bit more complicated to implement and $$$$$$.
EDIT: The fan would not really be a good idea, IMO. Also remember the ambient temp of smokes (heats too I believe) cannot be above 100F (UL std) All kiln rooms I have ever done get a 194 F fixed temp heat, never had a AHJ balk at that. Although multi criteria is the way to go, depending on the ambient temp. If the ambient temp is to high at the ceiling level I would go with a flame detector. I have found that, if the building is sprinkled, the AHJ will allow high temp sprinkler heads in the area, without detection, due to the false alarm problem. Of course, the alarm verification for that area would drastically reduce the chances of that.
