The National Fire Protection Association (NFPA) has released a report that examines oven, furnace, and dryer explosions in recent years. NFPA 86, Standard for Ovens and Furnaces, provides standardized methods to minimize fire and explosion hazards of ovens and furnaces used for commercial and industrial processing of materials, and it includes requirements for proper explosion ventilation methods for new ovens and furnaces.

In an effort to review the NFPA 86 explosion ventilation requirements for the next revision cycle, the Technical Committee on Ovens and Furnaces sought information on real-world incidents where NFPA 86 ventilation requirements would be involved and gathered information about explosion incidents in which an oven, furnace, or dryer was involved. Survey respondents listed human error as the cause of the explosion more than any other cause. Failure of a safeguard, a safeguard not installed, unforeseen hazard, poor process design, and all of the above were other causes listed.

Read entire article - http://www.nfpa.org/codes-and-standards/document-information-pages?mode=code&code=86