I have been asked to design a dry system to protect a composting storage vessel for a waste management facility. The engineer is suggesting Class III Commodity, Solid Piled.
I believe organic compost can contain nitrates, as do fertilizers. Are there any special considerations that should be considered in the design?. I believe "fertilizers" is included in the list of commodities not addressed by classification in NFPA 13.
Appreciate, input from anyone with experience in this area.