Hye all.
I’ve seen quite few methanol storage tank in my place. All tanks (what I’ve seen here) in floating roof and equipped with N2 blanketing. But for outbreathing, some tank sent the N2 to the vapor emission control system and some of them just vent to ATM. I not really sure which one is correct and which standard is the best for the methanol storage tank for reference.
Is it ok to vent N2 to ATM for the methanol tank without any flame arresters? I just thinking if the seal of floating roof damage and can cause the flammable methanol gas exposed to ATM.
I did refer to Technical Information & Safe Handling Guide for Methanol regarding the venting method. They mention to use flame arrester. What other standard/experience say?