FLEXIBLER INNENBEUTEL FÜR ATMOSPHÄRISCHEN BEHÄLTER, DIENEND ALS VERSCHLUSS DER ENTLÜFTUNGSÖFFNUNG

PCT No. PCT/BR93/00009 Sec. 371 Date Nov. 26, 1993 Sec. 102(e) Date Nov. 26, 1993 PCT Filed Mar. 26, 1993 PCT Pub. No. WO93/18989 PCT Pub. Date Sep. 30, 1993A breather bag for an atmospheric storage tank vent seal includes a bag made with an impermeable and flexible membrane, to be used in storage and/or transportation of liquid product in atmospheric tank, by working as a breather to air vent either in a closed type or an open type tank. Because the stored liquid product in the atmospheric storage tank is kept physically separated from atmospheric air by using the breather bag, the following advantages are obtained. Evaporative losses of liquid products stored in atmospheric tanks are averted. Thus, environmental pollution by product gases that would be expelled out of the tanks is avoided. The entry of flames due to fire in atmospheric storage tanks that contain flammable or combustible liquids is avoided, so that the chances of an accident are reduced. Hydrocontamination of stored liquid product by water present in atmospheric air in atmospheric storage tanks is also avoided. Likewise, contact between the stored liquid product and atmospheric air oxidizing compounds can be avoided. Finally, the entry of extraneous objects into liquid products stored in atmospheric storage tanks like insects and small animals or birds, which may infect the stored liquid products is avoided.