River Energy Solutions provides consulting engineering for atmospheric dispersion modeling to identify the extent of the hazardous classified area. This can be done for various gases.
We have experience with hydrogen venting as well. The National Fire Protection Association Hydrogen Technologies Code (NFPA 2) provides fundamental safeguards for generation and installations to ensure safety in the handling and use of hydrogen. While the standard provides the minimum design and construction requirements, there is now a requirement in the 2026 edition to perform a plume dispersion analysis for the Division I Class II area for normal operating, LH2 blowdown for differential filling, LH2 truck blow downs, or maintenance venting of hydrogen. Normal operating venting for large bulk LH2 storage can result in large area classification distances up to several hundred feet. A performance-based method will identify if a plume will be a risk to building intakes, electrical classification, and other sources of ignition. The preliminary consequence results will be presented in a graphical form showing the distance from the vent stack to the end 4% by volume (LFL of H2, Class I Div 1) dispersion cloud and the 25% by volume (25% of LFL, Class I, Div 2) dispersion cloud.
Radiation Assessment
- Analysis of flare radiation emissions
- Identify impacts to personnel, buildings and equipment
Vent Dispersion Modeling
- An assessment of the multifaceted behavior of gas dispersion during the essential process of venting, highlighting the various influencing factors and their implications for safety and efficiency
- Identifying potential hazards and their extent.
Safety Optimization
- Developing strategies to minimize flare radiation and dispersion risks
- Implementing measures for safer operations