arbitrader
Mechanical
- Nov 7, 2000
- 26
I am working with a Fire Sprinkler Company that is indicating that we should use NFPA 30 Table 16.5.2.9 for wood pallet on floor stacked storage of cartoned plastic quarts of Class IIIB combustible liquids.
I have maintained that NFPA 30 only lists rack storage with in-rack sprinklers (and ceiling sprinklers) per Table 16.5.2.5, and is silent on palletized and stacked storage of the above.
Their logic for Table 16.5.2.9 is that while it is for Class II or III liquids in Nonmetallic IBCs, absent other guidance, (since the plastic quarts are non-metallic), this is the design basis they will use. This doesn't make sense, Chapter 16.5.2.9 specifically states this table applies to non-metallic intermediate bulk containers. In addition the densities are based upon IBC storage heights; stacked 1 high at 0.46gpm/sf density or 2 high at 0.60 gpm/sf density, not stacked pallets of cartoned plastic combustible liquid containers.
I referred them to FM 7-29 Table 17 as an alternate which results in a much lower water demand which I want them to use for the design..
Their logic is illogical to me. Your professional comments are appreciated.
I have maintained that NFPA 30 only lists rack storage with in-rack sprinklers (and ceiling sprinklers) per Table 16.5.2.5, and is silent on palletized and stacked storage of the above.
Their logic for Table 16.5.2.9 is that while it is for Class II or III liquids in Nonmetallic IBCs, absent other guidance, (since the plastic quarts are non-metallic), this is the design basis they will use. This doesn't make sense, Chapter 16.5.2.9 specifically states this table applies to non-metallic intermediate bulk containers. In addition the densities are based upon IBC storage heights; stacked 1 high at 0.46gpm/sf density or 2 high at 0.60 gpm/sf density, not stacked pallets of cartoned plastic combustible liquid containers.
I referred them to FM 7-29 Table 17 as an alternate which results in a much lower water demand which I want them to use for the design..
Their logic is illogical to me. Your professional comments are appreciated.