For rim seal fire, double rim seals (of fire-resistant construction) are preferable to single seal. Due to irregularities during construction phase of large floating roof tanks, it is likely that a single seal will not be able to maintain 100% seal between the tank roof and tank wall along the entire height of the tank wall. Therefore, a second seal will improve the likelihood of achieving a tight seal, which will reduce emission, and minimize the risk of rim seal fire.
đang được dịch, vui lòng đợi..
