Well, it's all I got.
I think there is a little wiggle room regarding occupancy classification. For example, in the duct we can be max 12'-0" whilst outside the duct it is 10' max. That's a little weak, but, seeing as how I am a NICET certified engineering technician I see no wiggle room in using a sprinkler outside it's listing. I believe like you that deflector orientation in a duct is a non-issue due to deflectors determine the pattern at the floor, butt.... see "Ken's well known aversion to courtrooms" for details :) Brad ps, thank you, and you too Bob, for helping me out of the doldrums yesterday _____ From: Sprinklerforum [mailto:[email protected]] On Behalf Of [email protected] Sent: Wednesday, August 10, 2016 7:44 AM To: [email protected] Subject: RE: Paint spray application How do you know the quantity of combustibles? Typically the issues with ductwork is based on a hazardous environment (transporting flammable or combustible vapors or combustible particulate) that's the whole reason behind the requirement of protection of the ductwork. The other condition is that there is accumulation of the same material on the interior of the duct over time creating a hazardous environment. So in either case there is no way to call it an ordinary hazard environment. Craig L. Prahl Fire Protection Group Lead/SME CH2M 200 Verdae Blvd. Greenville, SC 29607 Direct - 864.920.7540 Fax - 864.920.7129 CH2MHILL Extension 77540 [email protected] From: Sprinklerforum [mailto:[email protected]] On Behalf Of Brad Casterline Sent: Wednesday, August 10, 2016 8:40 AM To: [email protected] Subject: RE: Paint spray application [EXTERNAL] To be completely formal, is it possible to consider the duct to be an OH portion of the EH Classification? Not much quantity of combustible there.
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