METHOD OF BREAKING ICE

Injection of gas beneath ice sheets located in frigid waters to lift portions of the ice to place a stress on an area of ice for easier breaking by a vessel or marine structure. The gas conduits can be fixed as with a marine structure, or a movable flexible conduit for use with a vessel. Two mounds...

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Bibliographic Details
Main Authors BENNETT J,US, CHANEY P,US
Format Patent
LanguageEnglish
Published 15.10.1974
Subjects
EQUIPMENT FOR SHIPPING
PERFORMING OPERATIONS
RELATED EQUIPMENT
SHIPS OR OTHER WATERBORNE VESSELS
TRANSPORTING
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Summary:Injection of gas beneath ice sheets located in frigid waters to lift portions of the ice to place a stress on an area of ice for easier breaking by a vessel or marine structure. The gas conduits can be fixed as with a marine structure, or a movable flexible conduit for use with a vessel. Two mounds of ice can be created by injecting air at two locations to create a trough therebetween which is in stress for easier failure when contacted by the vessel or marine structure. An air motor or turbine can be used in the ends of the flexible conduits for moving the conduits outwardly from the vessel or the exhaust end of the conduit can be directed toward the vessel to utilize jetting action to push the conduit from the vessel. Connected bridles or hydraulic line actuated rudders can control direction so the conduits exhaust ends will properly position.
Bibliography:Application Number: US19700077481