TRAA Science Advisory Panel member Dr. George Harpoles’ seminal article on the equivalent behavior of HF and MHF in a catastrophic accidental release concludes with the paragraph:
“Dangerous concentrations of HF could persist miles away from the refinery. The typical layers-of-protection approach (barriers, water sprays, pumps to spare vessels, etc.) may save lives for certain smaller leaks. However, a more catastrophic rupture, simultaneous with failure or bypass of the protection systems, is easy to imagine – in large earthquakes, accidental or deliberate explosions, or fire. Moreover, the delivery trucks traveling to the refinery carry MHF in similar quantities, and are even more vulnerable. They have no spare vessel or water-spray system. They are exposed to the public and subject to crashes. There is clear danger to the community in the use of MHF at refineries in urban settings.”
Read the full article by clicking:
HF and MHF – Equivalent Ground Hugging Fog Hazards (Wonkish)
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