Methods for sizing dust explosion vent areas: a comparison when reduced explosion pressures are low

Various methods that are available for estimating the explosion venting requirements of weak dust handling equipment are compared. The regression analysis that Simpson has performed on the well known K_st nomographs is shown to extend to K_st values less than 50 bar m s^?1 and to reduced explosion pressures between 1.1 bar a and 1.2 bar a.