Debris barrier
AssigneeBabcock & Wilcox Canada Ltd.
InventorThomas Waring
Life of this patent
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Abstract
A removable debris shield and method to internally protect a portion of a vessel, such as a pressure vessel, during fabrication. Pliant material sufficient to span a desired interior portion of the vessel has a hem located around the periphery of the material and having at least one opening. A hoop is removably inserted through the opening into the hem to extend the material across the desired interior portion of the vessel. In one embodiment, a spreader bolt spreads the hoop to force it tightly against the walls of the vessel.
Claims4
A method of shielding an interior portion of a vessel having an access opening from debris, comprising:
- a. providing pliant material sufficient to span a desired interior portion of the vessel, the material having a hem located around the periphery and the hem having at least one opening;
- b. providing a hoop having a first end and a second end;
- c. inserting the material and the hoop through the access opening into the vessel;
- and
- d. inserting the hoop through the at least one opening of the hem to extend the material across the diameter of the vessel.
Dependencies are inferred from the claim text.