In 2016, Osprey Corporation commissioned DEKRA Insight, a global leader in process safety management, to conduct a combustible dust hazard analysis (DHA) on the Osprey Blue-Sky filter for both the American and European markets. The purpose of the study was to determine if there were potential dust explosion hazards that would require the filter to be equipped with explosion protection. The guiding documents for the studies were NFPA 652 and NFPA 654 in the United States, and the ATEX directive 2014/34/EU in Europe.
Conclusions of DEKRA
Insight analysis DEKRA’s combustible hazard analysis of the Osprey Blue-Sky filter concludes that “due to the specific design and safety controls that are installed on these systems, operating the systems with control of flammable atmospheres…as a basis of safety the drum filter system will not require explosion
protection (i.e. explosion venting)”. To ensure that the Blue-Sky filter design is appropriate for each specific application, customers will need to provide information to Osprey on the dust characteristics, dust loading, and process airflows. In addition, customers will need to operate the equipment within the specific operating parameters defined by Osprey based on the DHA.
Benefits of not needing explosion protection
Customers report several benefits to not needing to install explosion protection on Blue-Sky filters, including:
- Reduces capital equipment costs (explosion protection and isolation can be expensive)
- Eliminates the ongoing maintenance associated with the explosion protection and isolation devices
- Eliminates the need to locate the filter outside, or near outside walls for explosion vent ducting
For additional information on the patented Osprey Blue-Sky filter, or the DEKRA Insight conclusions, please contact Osprey Corporation at: www.ospreyfilters.com.