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Internal jacket leg cutter for internally cutting the jacket support structures of offshore marine platforms and a method of cutting thereof
Internal jacket leg cutter for internally cutting the jacket support structures of offshore marine platforms and a method of cutting thereof
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机译：用于内部切割海上海洋平台的夹克支撑结构的内部夹克腿切割机及其切割方法
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摘要
593741 An internal caisson/jacket leg cutter and method provides a frame having upper and lower end portions. The upper end portion has rigging that enables the frame to be lifted. Extensible arms are movably supported upon the frame. The arms extend and retract along generally radially extending lines. When extended, the arms contact the inside surface of a caisson/jacket leg and thus center and anchor the frame within the caisson/jacket leg interior. A cutting mechanism at the lower end portion of the frame includes one or more rotary cutters or milling devices that cut the caisson/jacket leg wall as these cutters traverse an arc shaped path, tracking the caisson/jacket leg wall.
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