| 摘要 |
Floating booms for containing petroleum spills on a water surface and methods for forming the same. In accordance with the method, an elongate sheet of flexible material (32) and components for mixing to form a plastic foam or a foam forming or expanding material together with apparatus (26, 28) for forming the boom therefrom are stored for use when required. In operation on a boat (20), the apparatus forms a loop (40) or opens a preformed loop or loops in the material, at the same time injecting the foam forming material in the loop so formed to expand and fill the same with foam as the same is played out from the boat while traversing the region to be surrounded by the boom. The portion of the elongate sheet opposite the loop is preferably weighted (36), either prior to use or as the boom is formed and played out from the boat. <IMAGE>
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