Silo Ventilation Systems have been working on improving the phosphine handling of chemicals in grain storages over the past 15 years.
Working on OH&S best practices of handling phosphine at ground level, Silo Ventilation Systems have developed a heavy-duty Silo Fumigation Units and
Fumigation Chamber
to handle the dispensing of phosphine gases by installing phosphine from the ground level.
This alleviates the need for high-risk installation of phosphine tablets using ladders to access the tops of the silos. Proven results have indicated a 2- to 3-day turnaround for gases to pass through grain from the bottom entry AIV by means of natural air convection currents.
This means that the grain is getting a better distribution of gases through the volume of grain stored.
The removal of residue from the SFU is simple from ground level and of minimal risk compared to climbing the silo ladder and having residue powder blown back into silo, directly effecting grain contamination and also human contamination.