I have a storage arrangement that has been difficult to classify. Many of my colleagues have drawn different conclusions for a variety of reasons.
The storage arrangement in question is raw potatoes in plastic totes (an empty tote weighs 200 lbs and when full of potatoes weighs 2,000 lbs - 10% plastic by weight and less than 5% by volume when full) and stored solid piled to 20 ft. Empty totes are a Group A plastic without a doubt. However, when they are full of potatoes are they Class IV or Group A plastic?
By applying the commodity definition in 3.3.35 "The combination of products, packing material, and container that determines commodity classification" and Figure 188.8.131.52(b), I've concluded that this storage of full totes is a Class IV commodity since we have 10% by weight and less than 5% by volume of Group A plastics. This conclusion is further supported in section 184.108.40.206(6).
I can't locate any matching commodity classifications Annex A Table A.20.4(b) under 'Food Products - Non-Frozen'. The closest match is two listings that begin "Fruits and vegetables...." but the packaging is not a match to the above storage arrangement.
Is my conclusion sound or is there something that I've missed?
If you draw a different conclusion (ie. Group A plastic), please let me know what section(s) in NFPA 13 guided you in that direction.
I'm asking the fire protection community to weigh in on this matter - thanks in advance for your input. I've included a picture of the plastic totes.