Correct Classification for Water Treatment
Correct Classification for Water Treatment
(OP)
Hello,
I'm looking at a set of pre-engineered fire sprinkler drawings for a 1,350 sq. ft. warehouse which is part of a wastewater treatment facility. The warehouse contains a belt-filter press in the main area and then there's two smaller rooms (about 250 sq. ft. ea.) for chemical storage (ammonium hydroxide, bisulfite, & chlorine pellets) stored in totes not to exceed 5 ft.
The entire fire sprinkler system was designed to a NFPA #13 2007 ed. ORDINARY GROUP II occupancy which has me wondering if this is sufficient density for such an outfit.
The UBC classifications for these rooms are: Beltfilter press room = F-2 occupancy. Chemical storage rooms = H-2 occupancy.
Your thoughts would be appreciated.
I'm looking at a set of pre-engineered fire sprinkler drawings for a 1,350 sq. ft. warehouse which is part of a wastewater treatment facility. The warehouse contains a belt-filter press in the main area and then there's two smaller rooms (about 250 sq. ft. ea.) for chemical storage (ammonium hydroxide, bisulfite, & chlorine pellets) stored in totes not to exceed 5 ft.
The entire fire sprinkler system was designed to a NFPA #13 2007 ed. ORDINARY GROUP II occupancy which has me wondering if this is sufficient density for such an outfit.
The UBC classifications for these rooms are: Beltfilter press room = F-2 occupancy. Chemical storage rooms = H-2 occupancy.
Your thoughts would be appreciated.





RE: Correct Classification for Water Treatment
A) What are "chlorine pellets?" You indicate it is stored in totes, which I equate to 330-770 gallon portable tanks. Are you dealing with sodium hypochlorite and if so, what is its concentration?
B) What is the concentration of ammonium hydroxide?
C) What is bisulfate?
I am pretty darn sure do not have a Group H-2 occupancy.
RE: Correct Classification for Water Treatment
HSO4 with a -1 charge. It is basically a sulfate ion that has only picked up one hydrogen, or is what is left of sulfuric acid H2SO4 after it has dumped off it's hydrogen ion.
Not sure if that helps you with anything, or if I am remembering it correctly. Yeah, I used to be a chemistry nerd long ago.
Travis Mack
MFP Design, LLC
RE: Correct Classification for Water Treatment
RE: Correct Classification for Water Treatment
1-Chlorine "Pellets" - actually this is termed 'Tablets' not 'pellets' nothing more than chlorine in tablet form. Concerning the totes you are correct - 300 gallon portable containers. No sodium hypochlorite present.
2- This is currently an unknown - to me at least.
3- Sodium Bisulfite - sorry I typed over the word 'sodium'.
RE: Correct Classification for Water Treatment
Your tablets are a solid. I need the primary chemical. It could be calcium hypochlorite (with a given percentage of chlorine), trichloro-s-triazinetrione, or another product. Also, what is the total amount in pounds being stored?
RE: Correct Classification for Water Treatment
thanks for your input,
RE: Correct Classification for Water Treatment
In applying the requirements in IBC Table 307.1(1) your room or building would be classified as a Group H-3 occupancy. This is because the amount in storage exceeds the maximum allowable quantity for Class 3 oxidizers and Class 2 unstable reactive materials.
RE: Correct Classification for Water Treatment
RE: Correct Classification for Water Treatment
RE: Correct Classification for Water Treatment