Dear All,
Tank containing MEG (80%)+Water (20%) mixture has fuel gas blanketing. Tank vapour outlet line under pressure control valve is routed to thermal oxidizer. Tank is provided with a PVRV venting to atmosphere.
Due to having fuel gas blanketing I thought better to have an integral type flame arrester with PVRV that a vendor could offer.
But to accommodate flame arrester, vendor provided two PVRV on the tank and flame arrester was provided for vaccum purpose only.
I have these following query.
(1)Is it safe to not to have flame arrester for this type of design ?
(2)If flame arrester is required, is vacuum application is correctly selected ?
Need your opinion.
Regards.