There are dry chemical systems specifically listed and designed for paint booth applications, we do them all the time, the cost is double the cost for sprinklers, unless you don't have or can't get the current system to handle the paint booth demand.
Thanks Brett Peters General Manager Installation & Design Proudline Fire Protection Services Ltd. br...@proudline.ca 780 490 7602 office ext 202 780 490 7605 fax 780 777 0568 cell 780 718 2676 24h Visit us at www.proudline.ca On Mon, May 2, 2022 at 9:53 AM Prahl, Craig/GVL <craig.pr...@jacobs.com> wrote: > A dry chem system in an occupied space? > > > > And also in an active exhaust system? > > > > How do you maintain concentration levels? > > > > Craig Prahl | Jacobs | Group Lead/SME – Fire Protection | > craig.pr...@jacobs.com | www.jacobs.com > > 1041 East Butler Road Greenville, South Carolina 29606 > > CONTACT BY: email or MS TEAMS > > > > > > > > *From:* Kris Schultz <sa...@iafire.com> > *Sent:* Monday, May 2, 2022 11:38 AM > *To:* Prahl, Craig/GVL <craig.pr...@jacobs.com>; travis.m...@mfpdesign.com; > sprinklerforum@lists.firesprinkler.org > *Subject:* [EXTERNAL] RE: Sprinklers in duct - paintbooth > > > > Travis, > > > > This is certainly not an answer to your original questions, but has the > owner considered installing a dry chemical fire suppression system to > protect the booth, exhaust duct, exhaust plenum, etc.? My guess is a > simple dry chem system would be a much better option over installing a fire > pump. > > > > > > > > > > > > *From:* Prahl, Craig/GVL <craig.pr...@jacobs.com> > *Sent:* Monday, May 2, 2022 10:35 AM > *To:* travis.m...@mfpdesign.com; sprinklerforum@lists.firesprinkler.org > *Subject:* [Sprinklerforum] Re: Sprinklers in duct - paintbooth > > > > Sprinklers in the pit are a different zone than those overhead. Your > approach is correct in that they shouldn’t be added to the overhead calc. > > > > Whether or not the sprinkler in the duct is a HSW or PDT or UPR is > irrelevant. In such a small area the amount of discharge is going to fill > the space regardless of the sprinkler’s configuration. > > > > What does the engineer base his statement upon as far as the “requirement” > for HSW? > > > > FYI, look at section 26.4 in the 2019 edition of NFPA 13 talking about > Spray Application of flammable or combustible materials. It speaks about > spray booths specifically. > > > > Is there a filter plenum in the booth? In some configurations it is > another area needing sprinklers. > > > > Craig Prahl | Jacobs | Group Lead/SME – Fire Protection | > craig.pr...@jacobs.com | www.jacobs.com > > 1041 East Butler Road Greenville, South Carolina 29606 > > CONTACT BY: email or MS TEAMS > > > > > > > > *From:* travis.m...@mfpdesign.com <travis.m...@mfpdesign.com> > *Sent:* Monday, May 2, 2022 11:03 AM > *To:* sprinklerforum@lists.firesprinkler.org > *Subject:* [EXTERNAL] [Sprinklerforum] Sprinklers in duct - paintbooth > > > > We have a project that has a paint booth requiring sprinkler protection at > the exhaust duct at the top as it exits the roof. This has a 30 gpm flow > requirement. The area is subject to freezing, so I need a dry sprinkler. > We have always used K8 dry pendents in this application. I have a > reviewing engineer that is stating the sprinkler must be a sidewall if in > that orientation. In the standard that talks about kitchen equipment and > ducts, it states that the orientation of the sprinkler in a duct is not an > issue due to spray patterns and the small space of the duct. Of course, > the only dry sidewall I can find is K5.6 and when you need 30 gpm, that is > ±30 psi. When I have a project with only 50 psi, a backflow, elevation and > starting pressure, I am pretty much exceeding the water supply. > > Has anyone ever had this come up as an issue? > > > > Additionally, this spray booth has a small pit under the main floor. It > is separated by grated flooring. We have sprinklers in the pit area. It > is a single line of sprinklers to protect the pit area. Since that is > essentially sprinklers below an obstruction, I was not adding them to the > ceiling level sprinklers in the spray booth. Has anyone ever come across > this issue? How was it handled? > > This project is one of those that has a very marginal water supply so > trying to get it all to work has been a challenge to say the least. If we > have to change that sprinkler in the exhaust to K5.6 it is going to drive a > pump being needed. If I have to flow the sprinklers in the pit as well as > the ones at the booth ceiling, it will drive a pump. And of course, the > customer never planned on a pump. > > > > Happy Monday to everyone. > > > > *Please rate our customer service > <https://urldefense.com/v3/__https:/survey.medallia.com/?emailsignature&fc=3539&bg=Fire*20and*20Fabrication__;JSU!!B5cixuoO7ltTeg!AkBibaZldxFdGAqkdyGlW8Rqf3No5GXq89h1JCvUgfQnUhYPSOHFZ7s7msKpbD2mfuxGUacgZTKCRy78blEdXBJgzA$>* > > > > *Travis Mack, CFPS, CWBSP, RME-G, COC, SET* > > *Senior Engineering Manager* > > *MFP Design* > > 480-505-9271 ext. 700 C: 480-272-2471 > > travis.m...@mfpdesign.com > > www.mfpdesign.com > <https://urldefense.com/v3/__http:/www.mfpdesign.com__;!!B5cixuoO7ltTeg!AkBibaZldxFdGAqkdyGlW8Rqf3No5GXq89h1JCvUgfQnUhYPSOHFZ7s7msKpbD2mfuxGUacgZTKCRy78blEVnSHCjQ$> > > > > Send large files to us via: https://www.hightail.com/u/MFPDesign > <https://urldefense.com/v3/__https:/na01.safelinks.protection.outlook.com/?url=https*3A*2F*2Fwww.hightail.com*2Fu*2FMFPDesign&data=02*7C01*7C*7C1121d49f9e6b4cf248f108d4df580e77*7C14e5497c16da42e69ffa77d19bafe511*7C0*7C0*7C636379016677342180&sdata=eGdMZGu2wXhUupGwgGTrqF3b54OP5*2BAZvlHhABSexWY*3D&reserved=0__;JSUlJSUlJSUlJSUlJSU!!B5cixuoO7ltTeg!AkBibaZldxFdGAqkdyGlW8Rqf3No5GXq89h1JCvUgfQnUhYPSOHFZ7s7msKpbD2mfuxGUacgZTKCRy78blH1yyYBQg$> > > > > > ------------------------------ > > > NOTICE - This communication may contain confidential and privileged > information that is for the sole use of the intended recipient. 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