Thanks Chris. I had initially said to him that maybe a deluge system for the hopper/blower and room might be prudent with the main exhaust duct also protected. I have to swing back again anyway to pick up a copy of the insurers' report and recommendations, he had only one copy. The report was from a CFPS at CNA. I've looked through our BOCA and referenced standards and started a letter to him. I didn't survey the FA and what they have, did see a recent trip test tag on the DPV's, early 60's Hodgeman's. More to follow. Tom
Sounds more like a woodworking dust collection system to me with a larger variety of sizes of 'dust'. It's common enough to provide duct detection suppression systems to prevent a hot spot from getting to the hopper and sprinkler(s) in the hopper (usually anti-freeze). I'm sure you know this already. I actually think there is language in the IFC/IMC (and MN amendments) (I don't have any of the above) addressing ducts that carry combustibles. Enclosing and putting in SW will have marginal effects as I'm assuming the hopper is closed. Don't spend the money on the enclosure and put it into good sprinklers/suppression. And when things go wrong even when suppressed the smoke goes to the sky instead of into the building. Building additions may open another can of code worms. Oh and recommend a FPE, in writing, as the insurer this year isn't qualified to address things like this legally or for the next insurer. As an aside I wonder how the insurance industry allows their people to make recommendations that are subject to possible failure, causing subrogation within a company(?) and amount to legal engineering without an engineer often times. And yes in your proposal state you have not dreamed this up, you have no opinion on whether it will work or not. I've actually stated in proposals what we were asked to do would not be effective, didn't mince words. Chris Cahill _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
