Flame Arrester

An end of line Flame arrester is to be provided on a vent line carrying flammable gas mixture.

To decide the type of the arrester, i.e. whether a deflagration or a detonation type, it needs be decided on which side of the arrester is the flash likely to occur. It seems to me that the what is normally provided on a vent line is an end of line deflagration type. This is based on the consideration that the flash will occur on the outside. Is it that, there is no likely hood of a flash occurring within the pipe, even though the gas mixture is a flammable one. The BS standard on this 12874 does not address this. Neither does the literature that I saw at Elmac.

A detonation type is used to quench a flame front of sonic velocity originating on the inside of the pipe. Where would this type be used, in light of my query above, as to what would cause a flash to occur within the pipe.

Sajit

Save a tree...please don't print this e-mail unless you really need to. Received on Wed Feb 07 01:10:00 2007