The VDI Guideline 3673 ''Pressure Release of Dust Explosions'' publish
ed in June 1979 [1] describes one of the possible constructional prote
ctive measures against the effect of dust explosions and provides deta
ils on the venting area requirements of vessels and silos. Thanks to t
he results of extensive explosion trials conducted in the last ten yea
rs on the problems addressed above, important gaps in our knowledge ha
ve been filled and new findings gained which have made a revision of t
he above guideline necessary. The contents of the new version are repo
rted and attention drawn to modifications compared with the first vers
ion.