Coated fabric seal and related methods
A storage system for a petroleum product and related methods includes a vapor barrier including at least one layer having an ultra high molecular weight polyethylene material configured to inhibit absorption of a petroleum product therethrough. Such vapor barrier may be a coated fabric with the ultra high molecular weight polyethylene material and be configured to fluidly seal against a surface. The vapor barrier is further configured to be incorporated into any such storage system, which further includes a floating roof seal, a tank liner seal, and/or a leg boot seal.
1 . A storage system for a petroleum product, comprising:
(a) a vapor barrier including at least one layer having a first ultra high molecular weight polyethylene film layer, a scrim layer, and a second ultra high molecular weight polyethylene film layer; wherein the scrim layer is secured to the first ultra high molecular weight polyethylene film layer and the second ultra high molecular weight polyethylene film layer such that the scrim layer is sandwiched between the first and second ultra high molecular weight polyethylene film layers,
wherein the first ultra high molecular weight polyethylene film layer is configured to be received against a surface for fluidly sealing thereagainst, and
wherein the second ultra high molecular weight polyethylene film layer is exposed and thereby configured to receive the petroleum product thereagainst such that the vapor barrier is configured to inhibit absorption of the petroleum product therethrough.
2 . The storage system of claim 1 , further comprising a storage tank including a tank floor and a tank wall upwardly extending therefrom, wherein the vapor barrier covers at least a portion of the tank floor and at least a portion of the tank wall.
3 . The storage system of claim 1 , wherein the vapor barrier is configured to define an annular sleeve having an annular hollow for receiving an annular foam member therein.
4 . The storage system of claim 1 , wherein the vapor barrier is configured to define an elongate sleeve having a closed sleeve end and an open sleeve end for receiving a support leg therein through the open sleeve end.
5 . The storage system of claim 1 , wherein the vapor barrier has a collective predetermined material thickness of from approximately 0.02 inches to approximately 0.5 inches.
6 . The storage system of claim 1 , wherein the first ultra high molecular weight polyethylene film layer has a predetermined thickness configured to be flexible.
7 . The storage system of claim 6 , wherein the predetermined thickness of the first ultra high molecular weight polyethylene film layer is less than approximately 0.25 inch.
8 . The storage system of claim 7 , wherein the predetermined thickness of the first ultra high molecular weight polyethylene film layer is approximately 0.001 inch to approximately 0.125 inch.
9 . The storage system of claim 1 , further comprising a floating roof system having a first roof portion, wherein the vapor barrier is configured to envelop the first roof portion to inhibit the petroleum product from contacting to the first roof portion.
10 . The storage system of claim 9 , wherein the first roof portion includes a foam member, and wherein the vapor barrier is configured to surround the foam member and fluidly seal the foam member from the petroleum product.
11 . The storage system of claim 10 , wherein the floating roof system further includes a mounting plate, the foam member is attached to the mounting plate, and the vapor barrier covers the foam member such that the vapor barrier is configured to fluidly seal against a tank wall while being further configured to move along the tank wall.
12 . The storage system of claim 11 , wherein the floating roof system further includes a floating roof configured to be received within a storage tank having the tank wall, wherein each of the mounting plate, the foam member, and the vapor barrier are secured relative to the floating roof.
13 . The storage system of claim 9 , wherein the first roof portion includes a support leg having an elongate leg body extending along an axis to a terminal leg end, wherein the vapor barrier is received on the elongate leg body to surround the axis and cover the terminal leg end.
14 . A storage system for a petroleum product, comprising:
(a) a vapor barrier including at least one layer having a first ultra high molecular weight polyethylene film layer, a scrim layer, and a second ultra high molecular weight polyethylene film layer; wherein the first ultra high molecular weight polyethylene film layer is configured to inhibit absorption of a petroleum product therethrough and be received against a surface for fluidly sealing thereagainst; and wherein the scrim layer is secured to the first ultra high molecular weight polyethylene film layer and the second ultra high molecular weight polyethylene film layer such that the scrim layer is sandwiched between the first and second ultra high molecular weight polyethylene film layers; and
(b) a floating roof system having a first roof portion, wherein the vapor barrier is configured to envelop the first roof portion to inhibit the petroleum product from contacting to the first roof portion;
wherein the first roof portion includes a foam member, and wherein the vapor barrier is configured to surround the foam member and fluidly seal the foam member from the petroleum product; and
wherein the second ultra high molecular weight polyethylene film layer is an outermost layer of the vapor barrier.
15 . The storage system of claim 14 , wherein the vapor barrier has a collective predetermined material thickness of from approximately 0.02 inches to approximately 0.5 inches.
16 . The storage system of claim 14 , wherein the floating roof system further includes a mounting plate, the foam member is attached to the mounting plate, and the vapor barrier covers the foam member such that the vapor barrier is configured to fluidly seal against a tank wall while being further configured to move along the tank wall.
17 . The storage system of claim 16 , wherein the floating roof system further includes a floating roof configured to be received within a storage tank having the tank wall, wherein each of the mounting plate, the foam member, and the vapor barrier are secured relative to the floating roof.
18 . The storage system of claim 14 , wherein the floating roof system further includes a floating roof configured to be received within a storage tank having a tank wall, wherein the floating roof further comprises a wedge wiper seal extending radially outwardly from the floating roof to also engage with the tank wall.
19 . The storage system of claim 18 , wherein the wedge wiper seal is configured to wipe petroleum product from the tank wall during upward and downward movement of floating roof.
20 . The storage system of claim 18 , wherein the wedge wiper seal is formed from one or more ultra high molecular weight polyethylene film layers.