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We use the NFPA subscription service...2012 Standard was released June 20th I believe. It's available online in PDF form now.

@TravisMack - I agree 100%. What has happened is there was a request for options. Densities have been recommended as if there were no foam-water to provide accurate densities for rack storage and 3D fires. basically, the foam-water is to address the possibility of pool fires. The thought was...

I agree... the AHJ will probably not approve unless there is somethign that can be provided. I have never seen an ESFR foam-water system and I would also agree it would not be the most efficient. Heavy foam requirement for 15 minutes and lots of water. I was a little shocked as NFPA 30 2012...

May I ask for conversations sake... Foam-water... Is this not water? Essentially it's 97% water in the solution. I ask only because I don't find a section that says foam water cannot be considered water for purposes of a wet pipe system. My scenario considers the storage of aerosols in racks...

wait... it says wet pipe only, in comparison to not a dry system... Foam water is a wet pipe system.

well that was quick... I dont know how I missed that. I have been dealing with 30 and 30B. hadnt gone back to 13. thank you !

This question has come up several times and it is now been proposed on a project I am dealing with. I would have said this isn't going to work initially but I thought for conversation sake, I would look it up. I have searched the NFPA standards and do not see anywhere that it is not allowed. I...