National Fire Protection Association Study
A significant increase in costs and loss of overall storage capacity for both concrete and steel bins were the findings of recent study on the application of the National Fire Protection Association’s (NFPA) explosion/deflagration venting requirements per latest editions of NFPA 68 – Standard on Explosion Protection by Deflagration Venting. The NFPA standards are commonly used in North America (Canada, United States and Mexico) as the basis for determining if explosion venting is required and if so, the total amount of vent area required.
This study was financed by the National Grain and Feed Foundation and was conducted by the engineering firm Van Sickle, Allen and Associates in Minneapolis, Minn. The NFPA briefly considered conducting a research study to determine appropriate venting ratio data for silos utilized for storing agricultural commodities, including grains and oilseeds. The NFPA research was intended to follow up on one conducted through the NGFA’s Fire and Explosion Research Program in 1983. However, the NFPA Foundation ultimately decided not to pursue new research.
For more information, see an Executive Summary on the report.
To order a full copy of the 90-page study, the cost is $250 for non-NGFA members and $100 for NGFA members, contact Jess McCluer, NGFA Senior Vice President, Safety and Regulatory.
NEW! Estimating Phosphine Emissions During Grain Bin Fumigations
A new report funded by the National Grain and Feed Foundation and conducted by Kansas State University provides compelling evidence that properly sealed grain bins can effectively contain phosphine during fumigation. The study found no detectable phosphine emissions at monitored locations outside the grain bin throughout a five-day fumigation period, while maintaining effective internal concentrations for insect control.
Building on these findings, the National Grain and Feed Association developed updated emissions estimates demonstrating that actual phosphine emissions are significantly lower than some regulatory assumptions. These science-based results support more accurate emissions reporting, reduced regulatory burden, and lower compliance costs for the grain and feed industry. By combining rigorous research with practical application, the report reinforces the importance of proper sealing, monitoring, and best management practices to ensure safe, effective fumigation while protecting workers, communities, and the environment.