| 摘要 |
<p>METHOD OF AND STRUCTURE FOR REMOVING A FLEXIBLE PIPELINE A secondary containment system in which a flammable fluid passes from a storage tank through an underground primary pipeline past an impact valve to an inlet of a flammable fluid dispenser, the primary pipeline is within a secondary pipeline, and means for supporting the impact valve within a flammable fluid containment box installed underneath the flammable fluid dispenser. The primary pipeline comprises a first pipe segment which is flexible, a second pipe segment connected at one end to the storage tank and at a second end to a first end of the first pipe segment, and means connected to a second end of the first pipe segment below the box and extending up through an aperture in the box for attachment to the impact valve, wherein the first pipe segment is disposed so as to bend 90.degree. from in line with the second pipe segment toward the flammable fluid dispenser; and the means for supporting the impact valve includes means for attaching to the box, the means for attaching being detachable from within the box such that, in response to detachment of the means for supporting the impact valve from the box, disconnection of the first end of the first pipe segment from the second end of the second pipe segment, and removal of the impact valve from the box, the means for attachment to the impact valve and the first pipe segment pass through the aperture in the box.</p> |
